ISL32273EFVZ-T

DATASHEET ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E FN7529 Rev 5.00 Jan 31, 2019 Quad, ±16.5kV ESD Protected, 3.0V to 5.5V, RS-485/RS-422 Receivers These Renesas devices are ±16.5kV IEC61000-4-2 ESD protected, 3.0V to 5.5V powered, quad receivers for balanced communication using the RS-485 and RS-422 standards. Each receiver has low input currents (±200µA), so it presents a 1/4 unit load to the RS-485 bus and allows up to 128 receivers on the bus. The ISL32173E and ISL32177E are high data rate receivers that operate at data rates up to 80Mbps. Their 8ns maximum propagation delay skew (tolerance) ensures excellent part-topart matching. The ISL32273E, ISL32275E, and ISL32277E are reduced supply current versions that operate at data rates up to 20Mbps. The receiver outputs are tri-statable and incorporate a hot plug feature to keep them disabled during power-up and power-down. Versions are available with a common EN/EN (ISL32173E pinout) or a versatile individual channel enable (see Table 1). Features • IEC61000 ESD protection (RS-485 inputs) . . . . . . . . ±16.5kV - Class 3 ESD on all other pins . . . . . . . . . . . . . . . .>8kV HBM • Wide supply range . . . . . . . . . . . . . . . . . . . . . . . . . 3.0V to 5.5V • Wide common-mode range . . . . . . . . . . . . . . . . . -7V to +12V • Low part-to-part propagation delay tolerance (ISL3217xE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8ns (max) • Specified for +125°C operation • Fail-safe open Rx inputs • 1/4 unit load allows 128 devices on the bus • Available in industry standard pinouts (ISL32173E) and a 4x4 QFN (ISL32x77E) with added features • Logic supply pin (VL) eases operation in mixed supply systems (ISL32x77E) A 26% smaller footprint is available with the ISL32177E and ISL32277E QFN packages and these two devices also feature a logic supply pin (VL). The VL supply sets the switching points of the enable inputs and the receiver outputs’ VOH, to levels compatible with a lower supply voltage in mixed voltage systems. Individual channel and group enable pins increase the flexibility of the ISL32177E and ISL32277E. • High data rates. . . . . . . . . . . . . . . . up to 80Mbps or 20Mbps Related Literature • Telecom equipment • Low shutdown supply current. . . . . . . . . . . . . . . . . . . . . . 60µA • Tri-statable Rx outputs • 5V tolerant logic inputs when VCC = 3.3V Applications • Motor controllers/encoders For a full list of related documents, visit our website: • Programmable logic controllers • ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E device pages • Industrial/process control networks FREQUENCY RECEIVER INPUT (V) VCC = 3.3V, +25°C # of DEVICES = 270 80Mbps 0 -1 FIGURE 1. ISL32177E PART-TO-PART PROPAGATION DELAY VARIABILITY FN7529 Rev 5.00 Jan 31, 2019 RECEIVER OUTPUT (V) 11.52 11.40 11.28 11.15 11.03 10.91 10.78 10.66 10.54 10.41 10.29 10.17 9.92 10.04 9.80 9.67 3.0 RECEIVER PROPAGATION DELAY (ns) VCC = 3.3V 1 2.5 2.0 A-B VL = 2.5V VL = 1.8V 1.5 1.0 0.5 VL = 1.6V 0 -0.5 TIME (4ns/DIV) FIGURE 2. ISL3217xE DATA RATE AND VL PERFORMANCE Page 1 of 23 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E Typical Operating Circuits (1 of 4 Channels Shown) 3.3V to 5V 3.3V to 5V 100nF 16 RPU 100nF VCC 2 Y B 1 8 DI 1 3 Z EN GND EN 12 VFS RT EN RPU VCC A 2 3 RO 12 16 RB EN 4 GND RB 4 8 ISL32X73E ISL32X72E FIGURE 3. NETWORK USING GROUP ENABLES 3.3V to 5V 3.3V to 5V 100nF 16 RPU 100nF 16 RB VCC VCC A1 2 3 RO1 DI1 1 VFS RT 4 EN12 EN12 4 2 Y1 B1 1 3 Z1 GND GND RB 8 8 ISL32275E ISL32174E FIGURE 4. NETWORK USING PAIRED ENABLES 1.8V 3.3V to 5V 3.3V to 5V 2.5V 100nF VL VCC SHDNEN R PU EN EN V CC MCU/ UART GND 100nF 22 21 RPU 9 15 4 22 2, 3, 15, 16 RB 14 A1 24 1 RO1 B1 23 GND 10 20 VL V CC SHDNEN ‐ EN1 EN4 EN V CC EN 4 24 Y RT 2 EN1 21 R PU DI 23 V FS 1 Z RB ISL32x77E MCU/ UART GND GND 9 ISL32179E Using individual channel enable pins and configured for lowest shutdown supply surrent Using active group enable pins and configured for lowest SHDN Supply Current Note: When using separate supplies, V CC must be powered up before VL Note: When using separate supplies, V CC must be powered up before VL FIGURE 5. NETWORK WITH VL PIN FOR INTERFACING TO LOWER VOLTAGE LOGIC DEVICES NOTE: To calculate the resistor values, see TB509. FN7529 Rev 5.00 Jan 31, 2019 Page 2 of 23 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E Ordering Information PART NUMBER (Notes 2, 3) PART MARKING TEMP. RANGE (°C) Tape and Reel (Units) (Note 1) PACKAGE (RoHS Compliant) PKG. DWG. # ISL32173EIBZ ISL32173 EIBZ -40 to +85 - 16 Ld SOIC M16.15 ISL32173EIBZ-T ISL32173 EIBZ -40 to +85 2.5k 16 Ld SOIC M16.15 ISL32173EFBZ ISL32173 EFBZ -40 to +125 - 16 Ld SOIC M16.15 ISL32173EFBZ-T ISL32173 EFBZ -40 to +125 2.5k 16 Ld SOIC M16.15 ISL32173EIVZ 32173 EIVZ -40 to +85 - 16 Ld TSSOP MDP0044 ISL32173EIVZ-T 32173 EIVZ -40 to +85 2.5k 16 Ld TSSOP MDP0044 ISL32173EFVZ 32173 EFVZ -40 to +125 - 16 Ld TSSOP MDP0044 ISL32173EFVZ-T 32173 EFVZ -40 to +125 2.5k 16 Ld TSSOP MDP0044 ISL32177EIRZ 321 77EIRZ -40 to +85 - 24 Ld QFN L24.4x4C ISL32177EIRZ-T 321 77EIRZ -40 to +85 6k 24 Ld QFN L24.4x4C ISL32177EFRZ 321 77EFRZ -40 to +125 - 24 Ld QFN L24.4x4C ISL32177EFRZ-T 321 77EFRZ -40 to +125 6k 24 Ld QFN L24.4x4C ISL32273EIBZ ISL32273 EIBZ -40 to +85 - 16 Ld SOIC M16.15 ISL32273EIBZ-T ISL32273 EIBZ -40 to +85 2.5k 16 Ld SOIC M16.15 ISL32273EFBZ ISL32273 EFBZ -40 to +125 - 16 Ld SOIC M16.15 ISL32273EFBZ-T ISL32273 EFBZ -40 to +125 2.5k 16 Ld SOIC M16.15 ISL32273EIVZ 32273 EIVZ -40 to +85 - 16 Ld TSSOP MDP0044 ISL32273EIVZ-T 32273 EIVZ -40 to +85 2.5k 16 Ld TSSOP MDP0044 ISL32273EFVZ 32273 EFVZ -40 to +125 - 16 Ld TSSOP MDP0044 ISL32273EFVZ-T 32273 EFVZ -40 to +125 2.5k 16 Ld TSSOP MDP0044 ISL32275EIBZ ISL32275 EIBZ -40 to +85 - 16 Ld SOIC M16.15 ISL32275EIBZ-T ISL32275 EIBZ -40 to +85 2.5k 16 Ld SOIC M16.15 ISL32275EFVZ 32275 EFVZ -40 to +125 - 16 Ld TSSOP MDP0044 ISL32275EFVZ-T 32275 EFVZ -40 to +125 2.5k 16 Ld TSSOP MDP0044 ISL32277EIRZ 322 77EIRZ -40 to +85 - 24 Ld QFN L24.4x4C ISL32277EIRZ-T 322 77EIRZ -40 to +85 6k 24 Ld QFN L24.4x4C ISL32277EFRZ 322 77EFRZ -40 to +125 - 24 Ld QFN L24.4x4C ISL32277EFRZ-T 322 77EFRZ -40 to +125 6k 24 Ld QFN L24.4x4C NOTES: 1. See TB347 for details about reel specifications. 2. These Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), see ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E device pages. For more information about MSL see TB363. FN7529 Rev 5.00 Jan 31, 2019 Page 3 of 23 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E TABLE 1. SUMMARY OF FEATURES FUNCTION DATA RATE (Mbps) HOT PLUG? VL SUPPLY PIN? ISL32173E 4 Rx 80 YES NO EN, EN 15 YES 16 ISL32177E 4 Rx 80 YES YES Individual and Group Enables 15 YES 24 ISL32273E 4 Rx 20 YES NO EN, EN 5.5 YES 16 ISL32275E 4 Rx 20 YES NO EN12, EN34 5.5 YES 16 ISL32277E 4 Rx 20 YES YES Individual and Group Enables 5.5 YES 24 PART NUMBER MAXIMUM TOTAL SUPPLY LOW POWER CURRENT (mA) SHUTDOWN? Rx ENABLE TYPE PIN COUNT Pin Configurations ISL32275E (16 LD N-SOIC, 16 LD TSSOP) TOP VIEW ISL32173E, ISL32273E (16 LD N-SOIC, 16 LD TSSOP) TOP VIEW B1 1 A1 2 R RO1 3 RO2 5 A1 2 14 A4 RO1 3 12 EN A2 6 B2 7 15 B4 13 RO4 EN 4 GND 8 B1 1 16 VCC R R R 16 VCC R R 15 B4 14 A4 EN12 4 13 RO4 RO2 5 12 EN34 11 RO3 A2 6 10 A3 B2 7 9 B3 GND 8 11 RO3 R R 10 A3 9 B3 FN7529 Rev 5.00 Jan 31, 2019 EN 4 NC 5 RO2 6 B1 VCC VL B4 A4 19 18 RO4 R R 17 EN4 16 EN3 PAD (GND) 15 EN R 14 NC R 13 RO3 7 8 9 10 11 12 A3 3 20 B3 EN2 21 GND 2 22 SHDNEN EN1 23 B2 1 24 A2 RO1 A1 ISL32177E, ISL32277E (24 LD QFN) TOP VIEW Page 4 of 23 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E Pin Descriptions ISL32173E, ISL32273E PIN NUMBER ISL32275E PIN NUMBER ISL32177E, ISL32277E PIN NUMBER PIN NAME FUNCTION 4, 12 - 4, 15 EN, EN Group driver output enables that are internally pulled high to VCC. All receiver outputs are enabled by driving EN high or EN low and the outputs are all high impedance when EN is low and EN is high (that is, if using only the active high EN, connect EN to VCC or VL through a 1kΩ resistor; if using only the active low EN, connect EN directly to GND). If the group enable function is not required, connect EN to VCC (or VL) through a 1kΩ or greater resistor or connect EN directly to GND (ISL32x73E and ISL32x77E only). - 4, 12 - EN12, EN34 Paired driver output enables that are internally pulled high to VCC. Driving EN12 (EN34) high enables the Channel 1 and 2 (3 and 4) RO outputs. Driving EN12 (EN34) low disables the Channel 1 and 2 (3 and 4) outputs. If the enable function is not required, connect EN12 and EN34 to VCC (or VL) through a 1kΩ or greater resistor (ISL32x75E only). - - 2, 3, 16, 17 EN1, EN2, EN3, EN4 Individual receiver output enables that are internally pulled high to VCC. Forcing ENX high (along with EN high OR EN low) enables the Channel x output (ROX). Driving ENX low disables the channel X output, regardless of the states of EN and EN. If the individual channel enable function is not required, connect ENX to VCC (or VL) through a 1kΩ or greater resistor (ISL32x77E only). - - 9 SHDNEN Low power Shutdown mode enable that is internally pulled high to VCC. A high level allows the ISL32x77E to enter a low power mode when all channels are disabled. A low level prevents the device from entering the low power mode (ISL32x77E only). 3, 5, 11, 13 3, 5, 11, 13 1, 6, 13, 18 RO1, RO2, RO3, RO4 Channel X receiver output: If A - B ≥ 200mV, RO is high; If A - B ≤ -200mV, RO is low. RO = High if A and B are unconnected (floating). 8 8 10, PAD GND 2, 6, 10, 14 2, 6, 10, 14 24, 7, 12, 19 A1, A2, A3, A4 ±16.5kV IEC61000-4-2 ESD protected RS-485/422 level, Channel x noninverting receiver input. 1, 7, 9, 15 1, 7, 9, 15 23, 8, 11, 20 B1, B2, B3, B4 ±16.5kV IEC61000-4-2 ESD protected RS-485/422 level, Channel x inverting receiver input. 16 16 22 VCC System power supply input (3.0V to 5.5V). On devices with a VL pin powered from a separate supply, power up VCC first. - - 21 VL Logic power supply input (1.4V to VCC) that powers all the TTL/CMOS inputs and outputs (logic pins). VL sets the VIH and VIL levels of the enable and SHDNEN pins and sets the VOH level of the RO pins. Connect the VL pin to the lower voltage power supply of a logic device (such as UART or µcontroller) interfacing with the ISL32x77E logic pins. If VL and VCC are different supplies, power up this supply after VCC and keep VL ≤ VCC. To minimize input current and shutdown supply current, logic pins that are strapped high externally (preferably through a 1kΩ resistor) should connect to VCC, but they can also connect to VL (ISL32x77E only). - - 5, 14 NC No Connection FN7529 Rev 5.00 Jan 31, 2019 Ground connection. This is also the potential of the QFN thermal pad. Page 5 of 23 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E Truth Tables Truth Tables (Continued) RECEIVER ENABLE (ISL32275E) RECEIVER OUTPUT (ROX ENABLED, ALL VERSIONS) INPUTS OUTPUTS INPUTS (A-B) OUTPUT (RO) ≥0.2V 1 EN12 EN34 RO1 RO2 RO3 RO4 ≤-0.2V 0 0 0 Z* Z* Z* Z* Inputs Open (Floating) 1 0 1 Z Z EN EN 1 0 EN EN Z Z 1 1 EN EN EN EN RECEIVER ENABLE (ISL32173E, ISL32273E) INPUTS OUTPUTS EN EN ROX X 0 ENABLED 1 X ENABLED 0 1 DISABLED* NOTE: *Low power Shutdown mode when disabled NOTE: *Low power Shutdown mode when all outputs disabled; Z = Tristate RECEIVER ENABLE (ISL32177E, ISL32277E) INPUTS ENX EN EN OUTPUTS SHDNEN ROX COMMENTS 0 X X 0 Z Chan X output disabled EN1-4 = 0 X X 1 Z* All outputs disabled X 0 1 0 Z All outputs disabled X 0 1 1 Z* All outputs disabled 1 X 0 X EN Individual ENX controls chan 1 1 X X EN NOTE: * Low power Shutdown mode; Z = Tri-state FN7529 Rev 5.00 Jan 31, 2019 Page 6 of 23 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E Absolute Maximum Ratings Thermal Information VCC to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V VL to GND (Note 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (VCC +0.3V) Input Voltages EN (All varieties) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V A, B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -9V to +13V Output Voltages RO (Note 5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to (VCC + 0.3V) RO (Note 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to (VL + 0.3V) Short-Circuit Duration RO (One output at a time) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Indefinite ESD Rating . . . . . . . . . . . . . . . . . . . . . See “Electrical Specifications” Table Thermal Resistance (Typical) JA (°C/W) JC (°C/W) 16 Ld SOIC Package (Notes 6, 9) . . . . . . . . 78 30 16 Ld TSSOP Package (Notes 6, 9) . . . . . . . 104 25 24 Ld QFN Package (Notes 7, 8) . . . . . . . . . 42 5 Maximum Junction Temperature (Plastic Package) . . . . . . . . . . . +150°C Maximum Storage Temperature Range . . . . . . . . . . . . . . -65°C to +150°C Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TB493 Recommended Operating Conditions Supply Voltages VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 5.5V VL (Note 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6V to VCC Temperature Range ISL32x7xEI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C ISL32x7xEF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +125°C Bus Pin Common-Mode Voltage Range . . . . . . . . . . . . . . . . . . -7V to +12V RO Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -9mA to +9mA RO Load Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ≤6pF CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions can adversely impact product reliability and result in failures not covered by warranty. NOTES: 4. ISL32177E and ISL32277E only. 5. Excluding the ISL32177E and ISL32277E. 6. JA is measured with the component mounted on a high-effective thermal conductivity test board in free air. See TB379 for details. 7. JA is measured in free air with the component mounted on a high-effective thermal conductivity test board with “direct attach” features. See TB379 for details. 8. For JC, the “case temp” location is the center of the exposed metal pad on the package underside. 9. For JC, the “case temp” location is taken at the package top center. Electrical Specifications Test Conditions: VCC = 3.0V to 5.5V; VL = VCC (ISL32177E and ISL32277E only); Typicals are at the worst case of VCC = 3.3V or VCC = 5V, TA = +25°C; unless otherwise specified. Boldface limits apply across the operating temperature range. (Notes 10, 14) PARAMETER SYMBOL TEST CONDITIONS TEMP MIN (°C) (Note 13) MAX (Note 13) UNIT TYP DC CHARACTERISTICS Input High Voltage (Logic Pins, Note 17) VIH1 VIH2 VL = VCC if ISL32177E or ISL32277E VCC ≤3.6V VCC ≤ 5.5V Full 2 - - V Full 2.2 - - V VIH3 2.7V ≤ VL < 3.0V (ISL32177E and ISL32277E only) Full 2 - - V VIH4 2.3V ≤ VL < 2.7V (ISL32177E and ISL32277E only) Full 1.6 - - V VIH5 1.6V ≤ VL < 2.3V (ISL32177E and ISL32277E only) Full 0.72*VL - - V VIH6 1.4V ≤ VL < 1.6V (ISL32177E and ISL32277E only) 25 - 0.4*VL - V VIL1 VL = VCC (ISL32177E and ISL32277E only) Full - - 0.8 V VIL2 VL ≥ 2.7V (ISL32177E and ISL32277E only) Full - - 0.6 V VIL3 2.3V ≤ VL < 2.7V (ISL32177E and ISL32277E only) Full - - 0.6 V VIL4 1.6V ≤ VL < 2.3V (ISL32177E and ISL32277E only) Full - - 0.22*VL V VIL5 1.4V ≤ VL < 1.6V (ISL32177E and ISL32277E only) 25 0.35*VL - V IIN1 EN, EN, ENX, SHDNEN = 0V or VCC Full -15 - 15 µA IIN2 EN12, EN34 = 0V or VCC (ISL32275E only) Full -30 - 30 µA Receiver Differential Threshold Voltage V TH -7V ≤ VCM ≤ 12V Full -200 - 200 mV Receiver Input Hysteresis V TH VCM = 0V 25 - 30 - mV Input Low Voltage (Logic Pins, Note 17) Logic Input Current FN7529 Rev 5.00 Jan 31, 2019 Page 7 of 23 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E Electrical Specifications Test Conditions: VCC = 3.0V to 5.5V; VL = VCC (ISL32177E and ISL32277E only); Typicals are at the worst case of VCC = 3.3V or VCC = 5V, TA = +25°C; unless otherwise specified. Boldface limits apply across the operating temperature range. (Notes 10, 14) (Continued) PARAMETER SYMBOL Input Current (A, B) IIN3 Receiver Input Resistance RIN Receiver Output Leakage Current TEST CONDITIONS MAX (Note 13) UNIT TYP VIN = 12V Full - - 0.2 mA VIN = -7V Full -0.2 - - mA -7V ≤ VCM ≤ 12V Full 48 - - kΩ IOZ EN = 0V, 0 ≤ VO ≤ VCC (0 to VL (ISL32177E and ISL32277E only) Full -10 - 10 µA Receiver Short-Circuit Current, VO = High or Low IOS EN = 1, 0V ≤ VO ≤ VCC (0 to VL 20Mbps versions ISL32177E and ISL32277E only) 80Mbps versions Full - - ±100 mA Full - - ±165 mA Receiver Output High Voltage VOH1 Receiver Output Low Voltage VCC = 0V or 5.5V TEMP MIN (°C) (Note 13) IO = -8mA, VID = 200mV (VL = VCC ISL32177E and ISL32277E only) VCC ≥ 4.5V Full VCC - 1 - - V IO = -6mA, VID = 200mV (VL = VCC (ISL32177E and ISL32277E only) VCC ≥ 3.0V Full 2.4 - - V VOH2 IO = -2mA, VL ≥ 2.3V Full VL - 0.3 - - V VOH3 IO = -1.5mA, VL = 1.8V ISL32177E and ISL32277E only Full VL - 0.3 - - V VOH4 IO = -200µA, VL ≥ 1.4V Full VL - 0.2 - - V VOL1 IO = 8mA, VID = -200mV, VL = VCC ISL32177E and ISL32277E only Full - - 0.4 V VOL2 IO = 5mA, VL ≥ 1.8V ISL32177E and ISL32277E only Full - - 0.4 V VOL3 IO = 2mA, VL ≥ 1.4V ISL32177E and ISL32277E only Full - - 0.4 V 80ICC EN = 1, or EN = 0 (ISL32173E and ISL32177E) or EN1 = EN2 = EN3 = EN4 = 1 (ISL32177E) Full - - 15 mA 80ICC1/2 EN12 = 1 and EN34 = 0, or if only two channels are enabled on the ISL32177E Full - - 8.5 mA 80ICCD SHDNEN = 0, EN1 = EN2 = EN3 = EN4 = 0 or EN = 0 and EN = 1 (ISL32177E only) Full - - 2.5 mA 20ICC EN = 1, or EN = 0 (ISL32273E and ISL32277E), or EN12 = EN34 = 1 (ISL32275E), or EN1 = EN2 = EN3 = EN4 = 1 (ISL32277E) Full - - 5.5 mA 20ICC1/2 EN12 = 1 and EN34 = 0, or vice versa (ISL32275E only), or if only two channels are enabled on the ISL32277E Full - - 3.5 mA 20ICCD SHDNEN = 0, EN1 = EN2 = EN3 = EN4 = 0 or EN = 0 and EN = 1 (ISL32277E only) Full - - 1.2 mA ISHDN All outputs disabled (Note 18) (all except ISL32275E) Full - - 15 µA All outputs disabled (Note 19) (all except ISL32x73E) Full - - 60 µA IEC61000-4-2, from bus pins to GND Air gap 25 - ±16.5 - kV Contact 25 - ±8 - kV Human Body Model, from bus pins to GND 25 - ±15 - kV SUPPLY CURRENT No Load Supply Current, 80Mbps Versions No Load Supply Current, 20Mbps Versions Shutdown Supply Current ESD PERFORMANCE RS-485 Pins (A, B) FN7529 Rev 5.00 Jan 31, 2019 Page 8 of 23 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E Electrical Specifications Test Conditions: VCC = 3.0V to 5.5V; VL = VCC (ISL32177E and ISL32277E only); Typicals are at the worst case of VCC = 3.3V or VCC = 5V, TA = +25°C; unless otherwise specified. Boldface limits apply across the operating temperature range. (Notes 10, 14) (Continued) PARAMETER SYMBOL All Pins TEST CONDITIONS TEMP MIN (°C) (Note 13) TYP MAX (Note 13) UNIT HBM 25 - ±8 - kV Machine Model 25 - 500 - V RECEIVER SWITCHING CHARACTERISTICS (ISL32273E, ISL32275E, ISL32277E, 20Mbps) Maximum Data Rate Receiver Input to Output Delay Receiver Skew | tPLH - tPHL | fMAX VID = ±1.5V, CL = 15pF Full 20 - - Mbps tPLH, tPHL (Figure 6) Full - 37 55 ns tSKD (Figure 6) Full - 2.7 6 ns 3 8 ns Prop Delay Skew Channel-to-Channel tSKC-C (Figure 6, Note 11) Full - Prop Delay Skew Part-to-Part tSKP-P (Figure 6, Note 12) Full - 4 20 ns Receiver Enable to Output High tZH RL = 1kΩ, CL = 15pF, SW = GND (Figure 7, Notes 15, 21) Full - 150 190 ns Receiver Enable to Output Low tZL RL = 1kΩ, CL = 15pF, SW = VCC (Figure 7, Notes 15, 21) Full - 155 190 ns Receiver Disable from Output High tHZ RL = 1kΩ, CL = 15pF, SW = GND (Figure 7) Full - 19 30 ns Receiver Disable from Output Low tLZ RL = 1kΩ, CL = 15pF, SW = VCC (Figure 7) Full - 19 30 ns Receiver Enable from Shutdown to Output High tZH(SHDN) RL = 1kΩ, CL = 15pF, SW = GND (Figure 7, Notes 16, 20) Full - - 850 ns Receiver Enable from Shutdown to Output Low tZL(SHDN) RL = 1kΩ, CL = 15pF, SW = VCC (Figure 7, Notes 16, 20) Full - - 850 ns VCC ≤ 3.6V Full 80 - - Mbps VCC > 3.6V RECEIVER SWITCHING CHARACTERISTICS (ISL32173E, ISL32177E, 80Mbps) Maximum Data Rate Receiver Input to Output Delay Receiver Skew | tPLH - tPHL | fMAX VID = ±1.5V, CL ≤ 15pF Full 20 - - Mbps VID = ±1.5V, CL ≤ 6pF, 3.6V ≤ VCC ≤ 5.5V Full 80 - - Mbps tPLH, tPHL (Figure 6) Full 6 11 16 ns tSKD (Figure 6) Full - 0.4 2 ns Prop Delay Skew Channel-toChannel tSKC-C (Figure 6, Note 11) Full - 0.7 4 ns Prop Delay Skew Part-to-Part tSKP-P (Figure 6, Note 12) Full - 1.2 8 ns Receiver Enable to Output High tZH RL = 1kΩ, CL = 15pF, SW = GND (Figure 7, Notes 15, 21) Full - 57 75 ns Receiver Enable to Output Low tZL RL = 1kΩ, CL = 15pF, SW = VCC (Figure 7, Notes 15, 21) Full - 59 75 ns Receiver Disable from Output High tHZ RL = 1kΩ, CL = 15pF, SW = GND (Figure 7) Full - 18 30 ns Receiver Disable from Output Low tLZ RL = 1kΩ, CL = 15pF, SW = VCC (Figure 7) Full - 19 30 ns FN7529 Rev 5.00 Jan 31, 2019 Page 9 of 23 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E Electrical Specifications Test Conditions: VCC = 3.0V to 5.5V; VL = VCC (ISL32177E and ISL32277E only); Typicals are at the worst case of VCC = 3.3V or VCC = 5V, TA = +25°C; unless otherwise specified. Boldface limits apply across the operating temperature range. (Notes 10, 14) (Continued) TEMP MIN (°C) (Note 13) TEST CONDITIONS TYP MAX (Note 13) UNIT PARAMETER SYMBOL Receiver Enable from Shutdown to Output High tZH(SHDN) RL = 1kΩ, CL = 15pF, SW = GND (Figure 7, Notes 16, 20) Full - - 850 ns Receiver Enable from Shutdown to Output Low tZL(SHDN) RL = 1kΩ, CL = 15pF, SW = VCC (Figure 7, Notes 16, 20) Full - - 850 ns NOTES: 10. All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless otherwise specified. 11. Channel-to-channel skew is the magnitude of the worst case delta between any two propagation delays of any two outputs on the same IC, at the same test conditions. 12. tSKP-P is the magnitude of the difference in propagation delays of the specified terminals of two units tested with identical test conditions (VCC, temperature, etc.). 13. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. 14. EN = 0 indicates that the output(s) under test are disabled via the appropriate logic pin settings. EN = 1 indicates that the logic pins are set to enable the output(s) under test. 15. Keep SHDNEN low to avoid entering SHDN (ISL32177E and ISL32277E only). Ensure that at least one channel remains enabled to prevent shutdown (ISL32275E only). 16. Keep SHDNEN high to enter shutdown when all drivers are disabled (ISL32177E and ISL32277E only). 17. Logic pins are the enable variants and SHDNEN. 18. EN low and EN high on the ISL32x73E. SHDNEN, EN, EN1-EN4 all high and EN low on the ISL32x77E. 19. EN12 and EN34 low on ISL32275E. SHDNEN high, with EN1-EN4 low plus EN and EN high on the ISL32x77E. 20. Shutdown is entered by simultaneously disabling all four outputs for at least 600ns. 21. Does not apply to the ISL32173E nor the ISL32273E; only the EN from shutdown parameters apply to these two parts. Test Circuits and Waveforms 3V EN +1.5V B RO R A A 15pF 1.5V 1.5V 0V tPLH tPHL VCC OR VL SIGNAL GENERATOR 50% RO 50% 0V FIGURE 6A. TEST CIRCUIT FIGURE 6B. MEASUREMENT POINTS FIGURE 6. RECEIVER PROPAGATION DELAY EN GND B A R VCC OR VL 1kΩ RO SW SIGNAL GENERATOR 15pF 1.5V A SW tHZ +1.5V GND tLZ -1.5V VCC tZH (Notes 15, 21) +1.5V GND tZL (Notes 15, 21) -1.5V VCC tZH(SHDN) (Notes 16, 20) +1.5V GND tZL(SHDN) (Notes 16, 20) -1.5V VCC 1.5V GND 0V tZH, tZH(SHDN) PARAMETER FIGURE 7A. TEST CIRCUIT 3V OR VL EN tHZ OUTPUT HIGH RO VOH - 0.5V LOWER OF 1.5V OR VL/2 tZL, tZL(SHDN) 0V tLZ LOWER OF 1.5V OR VL/2 RO VOH VCC OR VL VOL + 0.5V OUTPUT LOW VOL FIGURE 7B. MEASUREMENT POINTS FIGURE 7. RECEIVER ENABLE AND DISABLE TIMES FN7529 Rev 5.00 Jan 31, 2019 Page 10 of 23 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E Typical Performance Curves CL = 15pF, VCC = VL = 3.3V or 5V, TA = +25°C; unless otherwise specified. VL notes apply to the ISL32177E and ISL32277E only. 11 10 8 120 7 100 6 5 VCC = VL = 3.3V -15 85 VOL, +125°C RECEIVER OUTPUT CURRENT (mA) RECEIVER OUTPUT CURRENT (mA) 80 VOH, +85°C VOH, +125°C 40 20 0 1 2 VL = 2.5V 0 3 4 5 RECEIVER OUTPUT CURRENT (mA) RECEIVER OUTPUT CURRENT (mA) VOL, +85°C 30 VOH, +25°C VOL, +125°C 20 VOH, +85°C VOH, +125°C 10 5 0.5 1.0 1.5 2.0 RECEIVER OUTPUT VOLTAGE (V) FIGURE 12. ISL32177E RECEIVER OUTPUT CURRENT vs RECEIVER OUTPUT VOLTAGE FN7529 Rev 5.00 Jan 31, 2019 6 7 VOL, +85°C VOL, +25°C VOL, +125°C VOH, +85°C 30 VOH, +125°C 20 10 0 VCC = 5V OR 3.3V, VL = 3.3V 0 0.5 1.0 1.5 2.0 2.5 3.0 3.3 FIGURE 11. ISL3217xE RECEIVER OUTPUT CURRENT vs RECEIVER OUTPUT VOLTAGE VOL, +25°C 35 0 0 5 40 18 VCC = 5V OR 3.3V, VL = 2.5V 15 3 4 EN VOLTAGE (V) RECEIVER OUTPUT VOLTAGE (V) FIGURE 10. ISL3217xE RECEIVER OUTPUT CURRENT vs RECEIVER OUTPUT VOLTAGE 25 2 VOH, +25°C 50 RECEIVER OUTPUT VOLTAGE (V) 40 1 FIGURE 9. VL SUPPLY CURRENT vs ENABLE PIN VOLTAGE (ISL32x77E ONLY) VOL, +25°C VOL, +85°C 0 VL = 3.3V 60 VCC = VL = 5V 100 60 0 110 125 FIGURE 8. SUPPLY CURRENT vs TEMPERATURE VOH, +25°C VL ≤ 2V 20 EN = VCC, EN = 0V 10 35 60 TEMPERATURE (°C) 120 80 40 ISL3227xE 2 -40 VL = 5V (VCC = 5V ONLY) 60 VCC = VL = 5V 3 DATA FOR ANY 1 ENABLE PIN 140 VCC = VL = 3.3V 4 VCC = 5V OR 3.3V 160 IL (µA) ICC (mA) 9 180 VCC = VL = 5V ISL3217xE 2.5 VOL, +25°C VCC = 5V OR 3.3V, VL = 1.8V 16 VOL, +85°C 14 VOL, +125°C 12 10 VOH, +25°C 8 VOH, +85°C 6 VOH, +125°C 4 2 0 0 0.5 1.0 1.5 1.8 RECEIVER OUTPUT VOLTAGE (V) FIGURE 13. ISL32177E RECEIVER OUTPUT CURRENT vs RECEIVER OUTPUT VOLTAGE Page 11 of 23 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E Typical Performance Curves CL = 15pF, VCC = VL = 3.3V or 5V, TA = +25°C; unless otherwise specified. VL notes apply to the ISL32177E and ISL32277E only. (Continued) 9 RECEIVER OUTPUT CURRENT (mA) 70 VCC = 5V OR 3.3V, VL = 1.5V VOL, +25°C VOL, +85°C 8 RECEIVER OUTPUT CURRENT (mA) 10 VOL, +125°C 7 6 5 VOH, +85°C VOH, +125°C 4 3 VOH, -40°C 2 1 0 0 0.2 0.4 0.6 0.8 1.0 1.2 50 VOL, +125°C 40 VOH, +85°C 30 VOH, +125°C 20 10 0 1 25 RECEIVER OUTPUT CURRENT (mA) RECEIVER OUTPUT CURRENT (mA) VOL, +25°C VOL, +85°C VOL, +125°C VOH, +25°C 20 VOH, +85°C VOH, +125°C 15 10 5 0 VCC = 5V OR 3.3V, VL = 3.3V 0 0.5 1.0 1.5 2.0 2.5 VCC = 5V OR 3.3V, VL = 1.8V VOL, +85°C VOL, +125°C 15 VOH, +25°C VOH, +85°C 10 VOH, +125°C 5 0 0.5 RECEIVER OUTPUT CURRENT (mA) RECEIVER OUTPUT CURRENT (mA) 6 VOL, +125°C 6 4 VOH, +85°C VOH, +125°C 2 0 0 0.5 1.0 1.5 RECEIVER OUTPUT VOLTAGE (V) FIGURE 18. ISL32277E RECEIVER OUTPUT CURRENT vs RECEIVER OUTPUT VOLTAGE FN7529 Rev 5.00 Jan 31, 2019 1.5 2.0 2.5 FIGURE 17. ISL32277E RECEIVER OUTPUT CURRENT vs RECEIVER OUTPUT VOLTAGE VOL, +85°C VOH, +25°C 1.0 RECEIVER OUTPUT VOLTAGE (V) VOL, +25°C 8 5 VOL, +25°C 20 0 3.0 3.3 FIGURE 16. ISL3227xE RECEIVER OUTPUT CURRENT vs RECEIVER OUTPUT VOLTAGE 11 4 VCC = 5V OR 3.3V, VL = 2.5V RECEIVER OUTPUT VOLTAGE (V) 10 3 FIGURE 15. ISL3227xE RECEIVER OUTPUT CURRENT vs RECEIVER OUTPUT VOLTAGE 40 25 2 RECEIVER OUTPUT VOLTAGE (V) FIGURE 14. ISL32177E RECEIVER OUTPUT CURRENT vs RECEIVER OUTPUT VOLTAGE 30 VOL, +85°C VOH, +25°C RECEIVER OUTPUT VOLTAGE (V) 35 VOL, +25°C 60 0 1.4 1.5 VCC = VL = 5V 1.8 VCC = 5V OR 3.3V, VL = 1.5V VOL, +25°C VOL, +85°C 5 VOL, +125°C 4 3 VOH, +125°C 2 1 VOH, +85°C VOH, -40°C VOH, +25°C 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.5 RECEIVER OUTPUT VOLTAGE (V) FIGURE 19. ISL32277E RECEIVER OUTPUT CURRENT vs RECEIVER OUTPUT VOLTAGE Page 12 of 23 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E Typical Performance Curves CL = 15pF, VCC = VL = 3.3V or 5V, TA = +25°C; unless otherwise specified. VL notes apply to the ISL32177E and ISL32277E only. (Continued) 20 3.5 VCC = 5V VL = 1.5V 2.5 SKEW (ns) 16 14 VL = 1.8V 2.0 VL = 1.8V 1.5 12 1.0 VL = 2.5V VL = 3.3V 10 8 -40 -15 10 35 VL = 2.5V VL = 3.3V 0.5 VL = 5V VL = 5V 60 85 110 0 -40 125 -15 10 60 85 110 125 FIGURE 21. ISL3217xE RECEIVER SKEW vs TEMPERATURE FIGURE 20. ISL3217xE RECEIVER PROPAGATION DELAY vs TEMPERATURE 20 35 TEMPERATURE (°C) TEMPERATURE (°C) 3.0 VCC = 3.3V 18 VCC = 3.3V |tPLH - tPHL| 2.5 VL = 1.5V VL = 1.5V 16 2.0 SKEW (ns) PROPAGATION DELAY (ns) VCC = 5V VL = 1.5V 3.0 18 PROPAGATION DELAY (ns) |tPLH - tPHL| 14 VL = 1.8V 12 1.5 VL = 1.8V 1.0 VL = 2.5V VL = 3.3V 10 VL = 3.3V 0.5 VL = 2.5V 8 -40 -15 10 35 60 85 110 0 -40 125 -15 10 TEMPERATURE (°C) FIGURE 22. ISL3217xE RECEIVER PROPAGATION DELAY vs TEMPERATURE 54 8 52 7 SKEW (ns) PROPAGATION DELAY (ns) 46 44 VL = 1.8V VL = 3.3V 40 34 -40 10 VL = 1.5V 5 4 VL = 1.8V 3 35 1 60 85 110 TEMPERATURE (°C) FIGURE 24. ISL3227xE RECEIVER PROPAGATION DELAY vs TEMPERATURE FN7529 Rev 5.00 Jan 31, 2019 VCC = 5V 2.5V ≤ VL ≤ VCC VL = 5V -15 125 2 VL = 2.5V 36 110 6 VL = 1.5V 38 85 |tPLH - tPHL| 50 42 60 FIGURE 23. ISL3217xE RECEIVER SKEW vs TEMPERATURE VCC = 5V 48 35 TEMPERATURE (°C) 125 0 -40 -15 10 35 60 85 110 TEMPERATURE (°C) FIGURE 25. ISL3227xE RECEIVER SKEW vs TEMPERATURE Page 13 of 23 125 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E Typical Performance Curves CL = 15pF, VCC = VL = 3.3V or 5V, TA = +25°C; unless otherwise specified. VL notes apply to the ISL32177E and ISL32277E only. (Continued) 57 7 VCC = 3.3V VCC = 3.3V |tPLH - tPHL| 6 PROPAGATION DELAY (ns) 52 VL = 1.5V 5 VL = 1.5V 42 37 32 -40 SKEW (ns) 47 VL = 1.8V 4 VL = 1.8V 3 VL = 2.5V VL = 3.3V VL = 2.5V 1 -15 10 35 60 85 110 0 -40 125 -15 TEMPERATURE (°C) RECEIVER INPUT (V) 0 A-B VCC = 5V, CL = 6pF VCC = 3.3V, CL = 15pF 0 -1 A-B VCC = 5V 5 4 3 VCC = 3.3V 2 1 0 FIGURE 29. ISL3227xE RECEIVER WAVEFORMS VL = 3.3V 3 VL = 2.5V VL = 1.8V 2 1 VL = 1.6V 0 TIME (4ns/DIV) FIGURE 30. ISL32177E RECEIVER WAVEFORMS FN7529 Rev 5.00 Jan 31, 2019 RECEIVER INPUT (V) A-B RECEIVER OUTPUT (V) RECEIVER INPUT (V) RECEIVER OUTPUT (V) VCC = 5V 0 4 110 TIME (20ns/DIV) 1 -1 85 20Mbps FIGURE 28. ISL3217xE RECEIVER WAVEFORMS CL = 6pF 60 1 TIME (4ns/DIV) 80Mbps 35 FIGURE 27. ISL3227xE RECEIVER SKEW vs TEMPERATURE RECEIVER OUTPUT (V) RECEIVER INPUT (V) RECEIVER OUTPUT (V) 80Mbps 1 5 4 3 2 1 0 10 TEMPERATURE (°C) FIGURE 26. ISL3227xE RECEIVER PROPAGATION DELAY vs TEMPERATURE -1 VL = 3.3V 2 80Mbps VCC = 3.3V 1 0 -1 2.5 2.0 A-B VL = 2.5V VL = 1.8V 1.5 1.0 0.5 VL = 1.6V 0 TIME (4ns/DIV) FIGURE 31. ISL32177E RECEIVER WAVEFORMS Page 14 of 23 125 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E Typical Performance Curves CL = 15pF, VCC = VL = 3.3V or 5V, TA = +25°C; unless otherwise specified. VL notes apply RECEIVER OUTPUT (V) RECEIVER INPUT (V) to the ISL32177E and ISL32277E only. (Continued) 20Mbps VCC = 5V OR 3.3V 1 0 -1 A-B VL = 2.5V 2.5 VL = 1.8V 2.0 1.5 VL = 1.6V 1.0 0.5 VL = 1.4V 0 TIME (20ns/DIV) FIGURE 32. ISL32277E RECEIVER WAVEFORMS Die Characteristics SUBSTRATE AND QFN THERMAL PAD POTENTIAL (POWERED UP): GND PROCESS: Si Gate BiCMOS FN7529 Rev 5.00 Jan 31, 2019 Page 15 of 23 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E Application Information RS-485 and RS-422 are differential (balanced) data transmission standards for use in long haul or noisy environments. RS-422 is a subset of RS-485, so RS-485 transceivers are also RS-422 compliant. RS-422 is a point-to-multipoint (multidrop) standard, that allows only one driver and up to 10 (assuming one unit load devices) receivers on each bus. RS-485 is a true multipoint standard that allows up to 32 one unit load devices (any combination of drivers and receivers) on each bus. Another important advantage of RS-485 is the extended Common-Mode Range (CMR), which specifies that the driver outputs and receiver inputs withstand signals that range from +12V to -7V. RS-422 and RS-485 are intended for runs as long as 4000’, so the wide CMR is necessary to handle ground potential differences, and voltages induced in the cable by external fields. Receiver Features These devices use differential receivers for maximum noise immunity and common-mode rejection. Input sensitivity is better than ±200mV, as required by the RS-422 and RS-485 specifications. Receiver input resistance of 48kΩ surpasses the RS-422 specification of 4kΩ and is four times the RS-485 Unit Load (UL) requirement of 12kΩ minimum. Therefore, these products are known as “one-quarter UL” receivers and there can be up to 128 of these devices on a network while still complying with the RS-485 loading specification. Receiver inputs function with common-mode voltages as great as +9V/-7V outside the power supplies (for example, +12V and -7V with VCC = 3.0V), making them ideal for long networks where induced voltages and ground potential differences are realistic concerns. All the receivers include a “fail-safe open” function that ensures a high level receiver output if the receiver inputs are unconnected (floating). All receivers easily support a 20Mbps data rate and the ISL32173E and ISL32177E support data rates up to 80Mbps. All receiver outputs are tri-statable, with the enable scheme varying by part type (see “Receiver Enable Functions”). Receiver Enable Functions All product types allow disabling of the Rx outputs. The ISL32x73E types feature group (all four Rx) enable functions that are active high (EN) or active low (EN). Receivers enable when EN = 1 or when EN = 0 and they disable only when EN = 0 and EN = 1. The ISL32275E version uses active high paired enable functions (EN12 and EN34) that enable (when high) or disable (when low) the corresponding pairs of Rx. All four of these enable pins have internal pull-up resistors to VCC, but unused enable pins that need to be high (for example, EN when using the EN input for enable control, or EN12 and EN34 when using always enabled receivers) should always be connected externally to VCC. If VCC transients might exceed 7V, insert a series resistor between the input(s) and VCC to limit the current that flows if the input’s ESD protection starts conducting. FN7529 Rev 5.00 Jan 31, 2019 1 OF 4 CHANNELS ENX VCC VCC CHX EN EN EN VCC FIGURE 33. ISL32x77E ENABLE LOGIC The ISL32177E and ISL32277E have the most flexible enable scheme. Their six enable pins allow for group, paired, or individual channel enable control. Figure 33 details the ISL32x77E’s internal enable logic. To use a group enable function, connect all the ENx pins high and handle the EN and EN pins as described in the previous paragraph. For paired enables, connect EN and EN high (for the lowest current in SHDN mode, if SHDN is used) and tie EN1 and EN2 together and EN3 and EN4 together. For individual channel enables, again connect EN and EN high and drive the appropriate ENs (active high) for the particular channel. All six enable pins incorporate pull-up resistors to VCC, but unused enable pins of any type should be externally connected high, rather than being left floating. Connecting to VCC is the best choice, but VL may be used as long as shutdown power is not a primary concern (for each VL connected input, ICC increases by (VCC - VL)/600kΩ). If VCC or VL transients might exceed 7V, insert a series resistor between the input(s) and the supply to limit the current that flows if the input’s ESD protection starts conducting. Wide Supply Range These devices operate with a wide range of supply voltages from 3.0V to 5.5V and the receivers meet the RS-485 specs for that full supply voltage range. 5.5V TOLERANT LOGIC PINS Logic input pins (enables, SHDNEN) contain no ESD nor parasitic diodes to VCC (nor to VL), so they withstand input voltages exceeding 5.5V regardless of the VCC and VL voltages (see Figure 9 on page 11). Logic Supply (VL Pin, ISL32177E and ISL32277E) Note: If powered from separate supplies, power up VCC before powering up the VL supply. The ISL32177E and ISL32277E include a VL pin that powers the logic inputs (enables pin, SHDNEN) and the RO outputs. These pins interface with “logic” devices such as UARTs, ASICs, and µcontrollers. Most of these devices use power supplies significantly lower than 3.3V. Thus, a 5V or 3.3V RO output level from an ISL32x77E IC might seriously overdrive and damage the logic device input (Figure 34). Similarly, the logic device’s low VOH might not exceed the VIH of the ISL32x77E’s 3.3V or 5V powered enable input. Connecting the ISL32x77E’s VL pin to the power supply of the logic device (as shown in Figure 34) limits the ISL32x77E’s VOH to VL and reduces its logic input switching points to values compatible with the logic device’s output levels. Page 16 of 23 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E Configure the logic pin input switching points and RO output levels to the supply voltage of the UART, ASIC, or µcontroller to eliminate the need for a level shifter/translator between the two ICs. VCC = +2V VCC = +3.3V RO EN VOH = 3.3V RXD VIH ≥ 2V VOH ≤ 2V GND ISL32x7xE ESD DIODE RXEN GND UART/PROCESSOR VCC = +3.3V TO 5V VCC = +2V VL RO EN VOH = 2V RXD VIH = 0.9V GND VOH ≤ 2V ESD DIODE RXEN GND Hot Plug Function When a piece of equipment powers up, there is a period of time when the processor or ASIC driving the RS-485 control lines (EN, EN, ENX) is unable to ensure that the RS-485 Rx outputs are kept disabled. If the equipment is connected to the bus, a receiver activating prematurely during power up may generate RO transitions that can cause interrupts. To avoid this scenario, this family incorporates a “hot plug” function. During power-up, circuitry monitoring VCC ensures that the Rx outputs remain disabled for a period of time, regardless of the state of the enables. This gives the processor/ASIC a chance to stabilize and drive the RS-485 control lines to the proper states. ESD Protection All pins on these devices include Class 3 (>8kV) Human Body Model (HBM) ESD protection structures, but the RS-485 pins (receiver inputs) incorporate advanced structures allowing them to survive ESD events in excess of ±15kV HBM and ±16.5kV IEC 61000-4-2. The RS-485 pins are particularly vulnerable to ESD damage because they typically connect to an exposed port on the exterior of the finished product. Touching the port pins, or connecting a cable, can cause an ESD event that might destroy unprotected ICs. The new ESD structures protect the device whether or not it is powered up, without degrading the RS-485 common-mode range of -7V to +12V. This built-in ESD protection eliminates the need for board level protection structures (for example, transient suppression diodes) and the associated, undesirable capacitive load they present. IEC 61000-4-2 Testing ISL32x77E UART/PROCESSOR FIGURE 34. USING VL PIN TO ADJUST LOGIC LEVELS VL can be anywhere from VCC down to 1.4V, but the data rate drops off dramatically below VL = 1.6V. Table 2 indicates typical VIH and VIL values (applicable to both speed grades) for various VL settings and also lists the ISL32177E’s typical data rate versus VL. The ISL32277E typically runs at 20Mbps for VL ≥ 1.6V and drops to 10Mbps to 15Mbps at VL = 1.4V. Prop delays, skews and transition times increase at lower VL, as shown in Figures 20 through 32. TABLE 2. TYPICAL VIH, VIL, AND DATA RATE vs VL FOR VCC = 3.3V OR 5V The IEC 61000 test method applies to finished equipment, rather than to an individual IC. Therefore, the pins most likely to suffer an ESD event are those that are exposed to the outside world (the RS-485 pins in this case) and the IC is tested in its typical application configuration (power applied) rather than testing each pin-to-pin combination. The lower current limiting resistor coupled with the larger charge storage capacitor yields a test that is much more severe than the HBM test. The extra ESD protection built into this device’s RS-485 pins allows the design of equipment meeting level 4 criteria without the need for additional board level protection on the RS-485 port. AIR-GAP DISCHARGE TEST METHOD For the air-gap discharge test method, a charged probe tip moves toward the IC pin until the voltage arcs to it. The current waveform delivered to the IC pin depends on approach speed, humidity, temperature, etc., so it is difficult to obtain repeatable results. The A and B RS-485 pins withstand ±16.5kV air-gap discharges. VL (V) VIH (V) VIL (V) ISL32177E DATA RATE (Mbps) 1.4 0.55 0.5 25 1.6 0.6 0.55 50 1.8 0.8 0.7 65 2.3 1 0.9 70 CONTACT DISCHARGE TEST METHOD 2.7 1.1 1 75 3.3 1.3 1.2 80 During the contact discharge test, the probe contacts the tested pin before the probe tip is energized, thereby eliminating the variables associated with the air-gap discharge. These quad receivers survive ±8kV contact discharges on the RS-485 pins. Neglecting the RO IOH currents, the quiescent VL supply current (IL) is typically less than 1µA for enable input voltages at ground or VL, as shown in Figure 9 on page 11. Enable pin pull-up resistors connect to VCC, so the current due to a low enable input adds to ICC rather than to IL. FN7529 Rev 5.00 Jan 31, 2019 Data Rate, Cables and Terminations The RS-485 and RS-422 are intended for network lengths up to 4000’, but the maximum system data rate decreases as the Page 17 of 23 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E transmission length increases. Networks operating at 80Mbps are limited to lengths much less than 100’ (30m), while a 20Mbps version can operate at full data rates with lengths up to 200’ (60m). Any of these ICs may be used at slower data rates over longer cables, but there are some limitations for the 80Mbps versions. The 80Mbps Rx is optimized for high speed operation, so its output may glitch if the Rx input differential transition times are too slow. Keeping the transition times below 500ns, which equates to a Tx driving a 1000’ (305m) CAT 5 cable, yields excellent performance across the full operating temperature range. Twisted pair is the cable of choice for RS-485 and RS-422 networks. Twisted pair cables tend to pick up noise and other electromagnetically induced voltages as common-mode signals, that are effectively rejected by the differential receivers in these ICs. When using these receivers, proper termination is imperative to minimize reflections. Short networks using slew rate limited transmitters do not need to be terminated, but terminations are recommended unless power dissipation is an overriding concern. In point-to-point, or point-to-multipoint (single driver on a bus with multiple receivers) networks, terminate the main cable in its characteristic impedance (typically 120Ω) at the end farthest from the driver. In multireceiver applications, keep stubs connecting receivers to the main cable as short as possible. Multipoint (multidriver) systems require that the main cable be terminated in its characteristic impedance at both ends. Keep stubs connecting a transmitter or receiver to the main cable as short as possible. FN7529 Rev 5.00 Jan 31, 2019 Low Power Shutdown Mode These BiCMOS receivers all use a fraction of the power required by their bipolar counterparts, but they also include a shutdown feature that reduces the already low quiescent ICC to a microamp trickle. These devices enter shutdown only when all four receivers disable (see “Truth Tables” on page 6) for at least 600ns. The ISL32x73E types enter shutdown whenever EN is low and EN is high. The ISL32275E enters shutdown only if both EN12 and EN34 are low. Note that the ISL32275E enable time increases significantly when enabling from the shutdown condition. The ISL32x77E enter the low power Shutdown mode if SHDNEN is high and all four Rx are disabled for at least 600ns. This is accomplished by driving EN low and EN high, or by driving all four ENX inputs low. Enable times increase if the IC was in shutdown, so if enable time is more important than SHDN supply current, tying the SHDNEN pin low defeats the low power shutdown feature. In this mode, the supply current drops to 1mA to 2mA when all four Rx are disabled, but the enable time of any Rx remains below 200ns. Remember that all enable pins have pull-up resistors on them, so each pin that is low during shutdown adds up to 15µA to the SHDN supply current. The shutdown supply current entries in the “Electrical Specifications” table on page 8 include the resistor currents of the pins indicated to be in the low state. Page 18 of 23 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E Revision History The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to the web to make sure that you have the latest revision. DATE REVISION Jan 31, 2019 FN7529.5 Removed ISL32175E from datasheet - all parts Retired. Page 1 added Related Literature. Updated, added a note, and moved Typical Operating Circuits to page 2 Ordering Information table moved to page 3. Removed ISL32175E. Added tape and reel quantity column. Updated Note 1, and removed Note 2. Moved Typical Performance Curves after Test Circuits and Waveforms. Removed About Intersil section. Updated POD M16.15. Changes: Update graphics to new standard layout, removing the dimension table. Updated disclaimer to the new Renesas disclaimer. Apr 25, 2016 FN7529.4 On page 1, under "Features", updated fourth bullet to "Low Part-to-Part Propagation Delay Tolerance (ISL3217xE) from ±4ns to 8ns (max)". Electrical spec table on page 8, change Receiver Short-circuit Current, 80Mbps Versions from ±155mA max to ±165mA max. On page 9, bottom table (3217x 80Mbps specs), change Receiver Input to Output Delay Min from 7ns to 6ns. Mar 3, 2016 FN7529.3 Updated Ordering Information table on page 3. Jul 27, 2015 FN7529.2 Updated entire datasheet applying Intersil’s new standards. Updated Table 1 on page 4 by adding “No longer available or supported” statement to applicable base part. Updated the Ordering Information table on page 3 by adding “No longer available or supported” statement to applicable FG and removing ISL32275EFBZ and ISL32275EIVZ part numbers. Added Revision History and About Intersil sections. FN7529 Rev 5.00 Jan 31, 2019 CHANGE Page 19 of 23 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E Package Outline Drawings For the most recent package outline drawing, see M16.15. M16.15 (JEDEC MS-012-AC ISSUE C) 16 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE Rev 2, 11/17 FN7529 Rev 5.00 Jan 31, 2019 Page 20 of 23 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E L24.4x4C For the most recent package outline drawing, see L24.4x4C. 24 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 2, 10/06 4.00 4X 2.5 A 20X 0.50 B PIN 1 INDEX AREA PIN #1 CORNER (C 0 . 25) 24 19 1 18 4.00 2 . 50 ± 0 . 15 13 0.15 (4X) 12 7 0.10 M C A B 0 . 07 24X 0 . 23 +- 0 . 05 4 24X 0 . 4 ± 0 . 1 TOP VIEW BOTTOM VIEW SEE DETAIL "X" 0.10 C C 0 . 90 ± 0 . 1 BASE PLANE ( 3 . 8 TYP ) SEATING PLANE 0.08 C SIDE VIEW ( 2 . 50 ) ( 20X 0 . 5 ) C 0 . 2 REF 5 ( 24X 0 . 25 ) 0 . 00 MIN. 0 . 05 MAX. ( 24X 0 . 6 ) DETAIL "X" TYPICAL RECOMMENDED LAND PATTERN NOTES: 1. Dimensions are in millimeters. Dimensions in ( ) for Reference Only. 2. Dimensioning and tolerancing conform to AMSE Y14.5m-1994. 3. Unless otherwise specified, tolerance : Decimal ± 0.05 4. Dimension b applies to the metallized terminal and is measured between 0.15mm and 0.30mm from the terminal tip. 5. Tiebar shown (if present) is a non-functional feature. 6. The configuration of the pin #1 identifier is optional, but must be located within the zone indicated. The pin #1 indentifier may be either a mold or mark feature. FN7529 Rev 5.00 Jan 31, 2019 Page 21 of 23 ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E Thin Shrink Small Outline Package Family (TSSOP) MDP0044 0.25 M C A B D THIN SHRINK SMALL OUTLINE PACKAGE FAMILY A (N/2)+1 N MILLIMETERS PIN #1 I.D. E E1 1 (N/2) B 0.20 C B A 2X N/2 LEAD TIPS TOP VIEW 0.05 e C For the most recent package outline drawing, see MDP0044. SEATING PLANE H SYMBOL 14 LD 16 LD 20 LD 24 LD 28 LD TOLERANCE A 1.20 1.20 1.20 1.20 Max 1.20 A1 0.10 0.10 0.10 0.10 0.10 ±0.05 A2 0.90 0.90 0.90 0.90 0.90 ±0.05 b 0.25 0.25 0.25 0.25 0.25 +0.05/-0.06 c 0.15 0.15 0.15 0.15 0.15 +0.05/-0.06 D 5.00 5.00 6.50 7.80 9.70 ±0.10 E 6.40 6.40 6.40 6.40 6.40 Basic E1 4.40 4.40 4.40 4.40 4.40 ±0.10 e 0.65 0.65 0.65 0.65 0.65 Basic L 0.60 0.60 0.60 0.60 0.60 ±0.15 L1 1.00 1.00 1.00 1.00 1.00 Reference Rev. F 2/07 0.10 M C A B b 0.10 C N LEADS NOTES: 1. Dimension “D” does not include mold flash, protrusions or gate burrs. Mold flash, protrusions or gate burrs shall not exceed 0.15mm per side. SIDE VIEW 2. Dimension “E1” does not include interlead flash or protrusions. Interlead flash and protrusions shall not exceed 0.25mm per side. 3. Dimensions “D” and “E1” are measured at dAtum Plane H. SEE DETAIL “X” 4. Dimensioning and tolerancing per ASME Y14.5M-1994. c END VIEW L1 A A2 GAUGE PLANE 0.25 L A1 0° - 8° DETAIL X FN7529 Rev 5.00 Jan 31, 2019 Page 22 of 23 1RWLFH  'HVFULSWLRQVRIFLUFXLWVVRIWZDUHDQGRWKHUUHODWHGLQIRUPDWLRQLQWKLVGRFXPHQWDUHSURYLGHGRQO\WRLOOXVWUDWHWKHRSHUDWLRQRIVHPLFRQGXFWRUSURGXFWV DQGDSSOLFDWLRQH[DPSOHV