0
登录后你可以
  • 下载海量资料
  • 学习在线课程
  • 观看技术视频
  • 写文章/发帖/加入社区
会员中心
创作中心
发布
  • 发文章

  • 发资料

  • 发帖

  • 提问

  • 发视频

创作活动
ISL33337EIRZ-T7A

ISL33337EIRZ-T7A

  • 厂商:

    RENESAS(瑞萨)

  • 封装:

    VQFN40

  • 描述:

    IC TRANSCEIVER FULL 3/3 40QFN

  • 数据手册
  • 价格&库存
ISL33337EIRZ-T7A 数据手册
DATASHEET ISL33354E, ISL33357E FN8775 Rev 1.00 Oct 21, 2016 5V, ±15kV ESD Protected, Two Port, Dual Protocol (RS-232/RS-485) Transceivers The ISL33354E, ISL33357E are two port interface ICs where port 1 is configured as a dual (2 Tx, 2 Rx) RS-232 transceiver, and port 2 is a single RS-485/422 transceiver. Features An on-board charge pump generates RS-232 compliant ±5V Tx output levels from a single VCC supply as low as 4.5V. The transceivers are RS-232 compliant, with the Rx inputs handling up to ±25V. • Operates from a single 5V supply The port 2 transceiver supports both the RS-485 and RS-422 differential communication standards. The receiver features "full fail-safe" operation, so the Rx output remains in a high state if the inputs are open or shorted together. The transmitter supports two data rates, one of which is slew rate limited for problem free communication at low data rates. The active low Rx enable pin (RE485) allows Tx/Rx direction control, via a single signal, simply by connecting the corresponding DE485 and RE485 pins together. The ISL33354E and ISL33357E also include a shutdown function, which disables the Tx and Rx outputs, disables the charge pumps and places the IC in a low current (55µA) mode. The ISL33357E is a QFN packaged device for space constrained applications. • ±15kV (HBM) ESD protected bus pins (RS-232 or RS-485) • Two independent ports: port 1 set for RS-232 (2 transceivers) and port 2 for RS-485/RS-422 (1 transceiver) • True flow-through pinouts (Rx inputs and Tx outputs all on the same side) simplify board layouts • Pb-free (RoHS compliant) • Full fail-safe (open/short) RS-485/422 port 2 Rx • User selectable RS-485 data rates - Fast speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . up to 20Mbps - Slew rate limited . . . . . . . . . . . . . . . . . . . . . . up to 115kbps • Fast RS-232 data rate . . . . . . . . . . . . . . 460kbps (Minimum) • Small charge pump capacitors . . . . . . . . . . . . . . . . 4 x 0.1µF • Low current shutdown mode . . . . . . . . . . . . . . . . . . . . . . 55µA • QFN package saves board space (ISL33357E only) Applications Related Literature • Gaming applications (e.g., slot machines) • For a full list of related documents, visit our website - ISL33354E, ISL33357E product pages • Factory automation • Single board computers • Security networks • Industrial/process control networks • Level translators (e.g., RS-232 to RS-422) • Point-of-sale equipment TABLE 1. SUMMARY OF FEATURES PART NUMBER PACKAGE OPTION PORT 2 RS-485 DATA RATE PORT 1 RS-232 DATA RATE LOW POWER SHUTDOWN? PORT 2 RS-485 Rx AND Tx ISL33354E 28 Ld SSOP 20M, 115k 650k YES YES ISL33357E 40 Ld QFN (6 x 6mm) 20M, 115k 650k YES YES FN8775 Rev 1.00 Oct 21, 2016 Page 1 of 23 ISL33354E, ISL33357E Ordering Information PART NUMBER (Notes 2, 3) PART MARKING TEMPERATURE RANGE (°C) TAPE AND REEL (UNITS) PACKAGE (RoHS COMPLIANT) PKG. DWG. # ISL33354EIAZ 33354 EIAZ -40 to +85 - 28 Ld SSOP M28.209 ISL33354EIAZ-T (Note 1) 33354 EIAZ -40 to +85 1k 28 Ld SSOP M28.209 ISL33357EIRZ 33357E IRZ -40 to +85 - 40 Ld QFN L40.6x6 ISL33357EIRZ-T (Note 1) 33357E IRZ -40 to +85 1k 40 Ld QFN L40.6x6 ISL33357EIRZ-T7A (Note 1) 33357E IRZ -40 to +85 250 40 Ld QFN L40.6x6 NOTES: 1. Refer to TB347 for details on reel specifications. 2. These Intersil 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). Intersil 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 product information page for ISL33354E, ISL33357E. For more information on MSL, see tech brief TB363. TABLE 2. KEY DIFFERENCES BETWEEN FAMILY OF PARTS PART NUMBER VCC (V) PKG RS485 (bps) DATA RATE RS232 (bps) DATA RATE ISL33354E 5 28Ld SSOP 20M, 115k 650k ISL33357E 5 40Ld QFN 20M, 115k 650k ISL33334E 3.3 28Ld SSOP 20M, 115k 400k ISL33337E 3.3 40Ld QFN 20M, 115k 400k NOTE: For a full list of dual protocol transceivers, please visit our website. Pin Configurations 26 VCC V+ 3 R R D T2OUT 7 3 T1OUT 4 5 *GND 6 NC VCC C2+ NC C1+ VCC C1- 35 34 33 32 31 PORT 1 30 R2OUT R 29 R1OUT R 28 T2IN D 27 T1IN D 26 *VCC 8 Z 9 A 10 23 DE485 22 RO R 11 12 13 14 15 EP 16 17 18 19 20 NC PORT 2 15 GND Y 24 DI D V- 16 RE485 7 RE485 17 V- *VCC *GND R 18 RO GND D 25 SHDN PORT 2 GND 19 DE485 * NOT A SUPPLY PIN, BUT MUST BE CONNECTED TO THE NOTED SUPPLY. FN8775 Rev 1.00 Oct 21, 2016 T2OUT 36 *VCC SLOW485 14 R2IN 22 T1IN 37 SLOW485 B 13 23 T2IN 38 20 DI Y 10 A 12 2 21 SHDN D *VCC 9 Z 11 R1IN 24 R1OUT 39 NC *GND 8 1 25 R2OUT R2IN 5 T1OUT 6 V+ 40 B R1IN 4 27 C2- NC PORT 1 C1- 2 NC 28 C2+ C1+ 1 C2- ISL33357E (40 LD QFN) TOP VIEW ISL33354E (28 LD SSOP) TOP VIEW 21 DNC Page 2 of 23 ISL33354E, ISL33357E Pin Descriptions PIN NAME PIN # for SSOP NC - 12, 20, 32, 33, 39, 40 BOTH No Internal Connection. DNC - 21 BOTH Do not make any external connections to this pin. SHDN 21 25 BOTH A low on SHDN disables the charge pumps, disables all the outputs and places the device in low power shutdown. Internally pulled-high. SHDN = 1 for normal operation. VCC 26 31, 34 BOTH System power supply input (4.5V to 5.5V). Both pins 31 and 34 must connect to the VCC supply. GND 15 15, 16 BOTH Ground connection. QFN pins 15 and 16 must both connect to GND. This is also the potential of the QFN’s exposed metal pad (EP). *VCC 9 7, 14, 26 BOTH For proper operation, connect this lead to the VCC supply. This is not a power supply lead, so no decoupling is required. *GND 8 6, 17 BOTH For proper operation, connect this lead to GND. This is not a power supply lead. RxIN 4, 5 2, 3 1 / RS-232 RS-232 receiver input with ±15kV ESD protection. A low on RxIN forces RxOUT high; a high on RxIN forces RxOUT low. RxOUT 24, 25 29, 30 1 / RS-232 RS-232 receiver output. TxIN 22, 23 27, 28 1 / RS-232 RS-232 transmitter input. A low on TxIN drives the corresponding TxOUT high, while a high on TxIN drives the corresponding TxOUT low. TxOUT 6, 7 4, 5 1 / RS-232 RS-232 transmitter output with ±15kV ESD protection. C1+ 1 37 1 / RS-232 External charge pump capacitor is connected to this lead. C1- 2 38 1 / RS-232 External charge pump capacitor is connected to this lead. C2+ 28 36 1 / RS-232 External charge pump capacitor is connected to this lead. C2- 27 35 1 / RS-232 External charge pump capacitor is connected to this lead. V+ 3 1 1 / RS-232 Internally generated positive RS-232 transmitter supply (+6V). V- 17 19 1 / RS-232 Internally generated negative RS-232 transmitter supply (-7V). A 12 10 2 / RS-485 RS-485 noninverting receiver input with ±15kV ESD protection. B 13 11 2 / RS-485 RS-485 inverting receiver input with ±15kV ESD protection. Y 10 8 2/ RS-485 RS-485 noninverting driver output with ±15kV ESD protection. Z 11 9 2/ RS-485 RS-485 inverting driver output with ±15kV ESD protection. DI 20 24 2 / RS-485 RS-485 driver input. A low on DI forces output Y low and output Z high. RO 18 22 2 / RS-485 RS-485 receiver output: If A > B by at least -40mV, RO is high; If A < B by -200mV or more, RO is low; RO = High if A and B are unconnected (floating) or shorted together (i.e., full fail-safe). SLOW48 5 14 13 2 / RS-485 RS-485 data rate control. A low on SLOW485 selects the 115kbps RS-485 data rate (slew rate limited output transitions); a high selects the 20Mbps data rate (full speed transitions). Internally pulled-high. RE485 16 18 2/ RS-485 RS-485 active low receiver output enable. RO is enabled when RE485 is low; RO is high impedance when RE485 is high. Internally pulled low. DE485 19 23 2/ RS-485 RS-485 driver output enable (DE). The driver outputs, Y and Z, are enabled by driving DE485 high. They are high impedance when DE485 is low. Internally pulled high. EP - EP BOTH PIN # for QFN FN8775 Rev 1.00 Oct 21, 2016 PORT/MODE FUNCTION QFN exposed thermal pad (EPAD). Connect to GND. Page 3 of 23 ISL33354E, ISL33357E Typical Operating Circuits +5V + C1 0.1µF + C2 0.1µF + R1IN R2IN T2OUT T1OUT B A 0.1µF 1 2 28 27 9, 26 C1+ VCC V+ 3 + C3 0.1µF C1C2+ V- 17 C2- 4 5k? 5 5k? 24 R 25 R 7 D 6 D 23 22 C4 0.1µF + R1OUT R2OUT T2IN T1IN 13 12 R 18 RO 16 RE485 Z Y 11 10 D 20 DI 19 DE485 21 VCC SHDN 14 VCC SLOW485 GND 8, 15 NOTE: PINOUT FOR SSOP FIGURE 1. 1 PORT IN RS-232 MODE AND 1 PORT IN RS-485 MODE FN8775 Rev 1.00 Oct 21, 2016 Page 4 of 23 ISL33354E, ISL33357E TABLE 3. ISL33354E AND ISL33357E FUNCTION TABLE INPUTS RECEIVER OUTPUTS DRIVER OUTPUTS Y AND Z T1OUT AND T2OUT CHARGE PUMPS (Note 4) DRIVER DATA RATE (bps) MODE PORT SHDN RE485 DE485 SLOW485 RO R1OUT AND R2OUT 1 1 N.A. N.A. N.A. N.A. ON N.A. ON ON 460k RS-232 2 1 0 0 0 ON N.A. High-Z N.A. ON 115k RS-485 Rx 2 1 0 1 0 ON N.A. ON N.A. ON 115k RS-485 Tx and Rx 2 1 1 1 0 High-Z N.A. ON N.A. ON 115k RS-485 Tx 2 1 0 0 1 ON N.A. High-Z N.A. ON 20M RS-485 Rx 2 1 0 1 1 ON N.A. ON N.A. ON 20M RS-485 Tx and Rx 2 1 1 1 1 High-Z N.A. ON N.A. ON 20M RS-485 Tx 1 and 2 0 X X X High-Z High-Z High-Z High-Z OFF N.A. Shutdown NOTE: 4. Charge pumps are off if SHDN = 0. If SHDN = 1, the charge pumps are on. Truth Tables RS-485 TRANSMITTING (PORT 2) INPUTS RS-232 TRANSMITTING (PORT 1) INPUTS OUTPUTS OUTPUTS SHDN DE485 DI SLOW485 Y Z DATA RATE (bps) SHDN T1IN T2IN T1OUT T2OUT 1 1 0 0 0 1 115k 1 0 0 1 1 1 1 1 0 1 0 115k 1 0 1 1 0 1 1 0 1 0 1 20M 1 1 0 0 1 1 1 1 1 1 0 20M 1 1 1 0 0 1 0 X X High-Z High-Z N.A. 0 X X High-Z High-Z 0 X X X High-Z High-Z N.A. RS-485 RECEIVING (PORT 2) RS-232 RECEIVING (PORT 1) INPUTS INPUTS OUTPUTS OUTPUT SHDN R1IN R2IN R1OUT R2OUT SHDN RE485 A-B RO 1 0 0 1 1 1 0 ≥-40mV 1 1 0 1 1 0 1 0 ≤-200mV 0 1 1 0 0 1 1 0 Open or shorted together 1 1 1 1 0 0 1 1 X High-Z 1 Open Open 1 1 0 X X High-Z 0 X X High-Z High-Z FN8775 Rev 1.00 Oct 21, 2016 Page 5 of 23 ISL33354E, ISL33357E Absolute Maximum Ratings (TA = +25°C) Thermal Information VCC to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V Input Voltages All Except A, B, RxIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V Input/Output Voltages A, B, RxIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -25V to +25V Y, Z, TxOUT (Note 5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . -12.5V to +12.5V RO, RxOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to (VCC + 0.5V) Output Short-Circuit Duration Y, Z, TxOUT, RxOUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Indefinite ESD Rating . . . . . . . . . . . . . . . . . . . . . . . See Specification Table on page 7 Latch-Up (per JESD78, Level 2, Class A). . . . . . . . . . . . . . . . . . . . . . . +85°C JA (°C/W) JC (°C/W) Thermal Resistance (Typical) 28 Ld SSOP Package (Notes 7, 9) . . . . . . . . 60 36 40 Ld QFN Package (Notes 6, 8) . . . . . . . . . 32 2.5 Maximum Junction Temperature (Plastic Package) . . . . . . . . . . . +150°C Maximum Storage Temperature Range . . . . . . . . . . . . . -65°C to +150°C Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493 Recommended Operating Conditions Supply Voltage (VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C RS-485 Tx Load . . . . . . . . . . . . . . . . . . . . . . One or two 120Ω Terminations CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. NOTES: 5. One output at a time, IOUT ≤ 100mA for ≤10 mins. 6. JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech Brief TB379. 7. JA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief 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 = 4.5V to 5.5V, C1 - C4 = 0.1µF, unless otherwise specified. Typicals are at VCC = 5V, TA = +25°C (Note 10). Boldface limits apply across the operating temperature range, -40°C to +85°C. PARAMETER TEMP (°C) MIN (Note 15) TYP MAX (Note 15) UNIT Full - - VCC V R = 50Ω (RS-422) (Figure 2) Full 2.5 3.1 - V R = 27Ω (RS-485) (Figure 2) Full 2.2 2.7 5 V VOD3 RD = 60Ω, R = 375Ω, VCM = -7V to 12V (Figure 2) Full 2 2.7 5 V VOD R = 27Ω or 50Ω (Figure 2) Full - 0.01 0.2 V SYMBOL TEST CONDITIONS DC CHARACTERISTICS - RS-485 DRIVER (Port 2) Driver Differential VOUT (No Load) VOD1 Driver Differential VOUT (with Load) VOD2 Change in Magnitude of Driver Differential VOUT for Complementary Output States Driver Common-Mode VOUT VOC R = 27Ω or 50Ω (Figure 2) (Note 14) Full - - 3.1 V Change in Magnitude of Driver Common-Mode VOUT for Complementary Output States VOC R = 27Ω or 50Ω (Figure 2) (Note 14) Full - 0.01 0.2 V Full 35 - 250 mA VOUT = 12V Full - - 500 µA VOUT = -7V Full -200 - - µA Driver Short-Circuit Current, VOUT = High or Low IOS -7V ≤ (VY or VZ) ≤ 12V (Note 12) Driver Three-State Output Leakage Current (Y, Z) IOZ Outputs disabled, VCC = 0V or 5.5V DC CHARACTERISTICS - RS-232 DRIVER (PORT 1) Driver Output Voltage Swing VO All TOUTS loaded with 3kΩ to ground Full ±5 +6/-7 - V Driver Output Short-Circuit Current IOS VOUT = 0V Full -60 25/-35 60 mA DC CHARACTERISTICS - LOGIC PINS (i.e., DRIVER AND CONTROL INPUT PINS) Input High Voltage VIH Full 2 1.6 - V Input Low Voltage VIL Full - 1.4 0.8 V FN8775 Rev 1.00 Oct 21, 2016 Page 6 of 23 ISL33354E, ISL33357E Electrical Specifications Test Conditions: VCC = 4.5V to 5.5V, C1 - C4 = 0.1µF, unless otherwise specified. Typicals are at VCC = 5V, TA = +25°C (Note 10). (Continued) Boldface limits apply across the operating temperature range, -40°C to +85°C. (Continued) PARAMETER Input Current SYMBOL TEST CONDITIONS TEMP (°C) MIN (Note 15) TYP MAX (Note 15) UNIT IIN1 Pins without pull-ups or pull-downs Full -2 - 2 µA IIN2 SLOW485, DE485, RE485, SHDN Full -25 - 25 µA -7V ≤ VCM ≤ 12V, full fail-safe Full -0.2 - -0.04 V VCM = 0V 25 - 35 - mV VIN = 12V Full - - 0.8 mA VIN = -7V Full -0.64 - - mA Full 15 - - kΩ DC CHARACTERISTICS - RS-485 RECEIVER INPUTS (PORT 2) Receiver Differential Threshold Voltage Receiver Input Hysteresis Receiver Input Current (A, B) Receiver Input Resistance V TH V TH IIN RIN VCC = 0V or 4.5 to 5.5V -7V ≤ VCM ≤ 12V, VCC = 0 (Note 13) or 4.5V ≤ VCC ≤ 5.5V DC CHARACTERISTICS - RS-232 RECEIVER INPUTS (PORT 1) Receiver Input Voltage Range VIN Full -25 - 25 V Receiver Input Threshold VIL Full - 1.4 0.8 V VIH Full 2.4 1.9 - V Receiver Input Hysteresis V TH 25 - 0.5 - V Receiver Input Resistance RIN Full 3 5 7 kΩ VIN = ±15V, VCC powered up (Note 13) DC CHARACTERISTICS - RECEIVER OUTPUTS (PORTS 1 and 2) Receiver Output High Voltage VOH IO = -2mA Full 3.5 4.6 - V Receiver Output Low Voltage VOL IO = 3mA Full - 0.1 0.4 V Receiver Short-Circuit Current IOSR 0V ≤ VO ≤ VCC Full 7 - 85 mA Receiver Three-State Output Current IOZR Output disabled, 0V ≤ VO ≤ VCC Full - - ±10 µA ICC SHDN = VCC Full - 3.7 7 mA SHDN = SLOW485 = GND, RE485 = VCC, DE485 = GND Full - 55 160 µA Bus Pins (A, B, Y, Z, RxIN, TxOUT) Human body model, Bus pin to GND 25 - ±15 - kV All Other Pins Human body model (per JEDEC) 25 - ±4 - kV Machine model (per JEDEC) 25 - ±200 - V CL ≥15pF Full - 18 30 V/µs CL ≤2500pF Full 4 12 - V/µs RL = 3kΩ, CL = 2500pF, 10% - 90% Full 0.22 1.2 3.1 µs RL = 3kΩ CL = 1000pF (Figure 7) Full - 1 2 µs Full - 1.2 2 µs POWER SUPPLY CHARACTERISTICS No-Load Supply Current, (Note 11) Shutdown Supply Current ISHDN ESD CHARACTERISTICS RS-232 DRIVER AND RECEIVER SWITCHING CHARACTERISTICS (PORT 1) Driver Output Transition Region Slew Rate SR Driver Output Transition Time tr, tf Driver Propagation Delay tDPHL RL = 3kΩ, measured from 3V to -3V or -3V to 3V tDPLH Driver Propagation Delay Skew tDSKEW tDPHL - tDPLH (Figure 7) Full - 240 400 ns Driver Enable Time from Shutdown tDENSD VOUT = ±3.0V, CL = 1000pF 25 - 20 - µs RL = 3kΩ, CL = 1000pF, one transmitter switching Full 460 650 - kbps Driver Maximum Data Rate FN8775 Rev 1.00 Oct 21, 2016 DRD Page 7 of 23 ISL33354E, ISL33357E Electrical Specifications Test Conditions: VCC = 4.5V to 5.5V, C1 - C4 = 0.1µF, unless otherwise specified. Typicals are at VCC = 5V, TA = +25°C (Note 10). (Continued) Boldface limits apply across the operating temperature range, -40°C to +85°C. (Continued) PARAMETER Receiver Propagation Delay TEMP (°C) MIN (Note 15) TYP MAX (Note 15) UNIT Full - 50 120 ns Full - 40 120 ns tRPHL - tRPLH (Figure 8) Full - 10 40 ns CL = 15pF Full 0.46 2 - Mbps Full 15 30 50 ns SYMBOL tRPHL TEST CONDITIONS CL = 15pF (Figure 8) tRPLH Receiver Propagation Delay Skew Receiver Maximum Data Rate tRSKEW DRR RS-485 DRIVER SWITCHING CHARACTERISTICS (FAST DATA RATE (20Mbps), PORT 2, (SLOW485 = VCC)) Driver Differential Input to Output Delay tDLH, tDHL RDIFF = 54Ω, CL = 100pF (Figure 3) Driver Output Skew tSKEW RDIFF = 54Ω, CL = 100pF (Figure 3) Full - 3 10 ns Driver Differential Rise or Fall Time tR, tF RDIFF = 54Ω, CL = 100pF, (Figure 3) Full 3 11 20 ns Driver Enable to Output Low tZL CL = 100pF, SW = VCC (Figure 4) Full - 27 60 ns Driver Enable to Output High tZH CL = 100pF, SW = GND (Figure 4) Full - 24 60 ns Driver Disable from Output Low tLZ CL = 15pF, SW = VCC (Figure 4) Full - 31 60 ns Driver Disable from Output High tHZ CL = 15pF, SW = GND (Figure 4) Full - 24 60 ns Driver Enable from Shutdown to Output Low tZL(SHDN) RL = 500Ω, CL = 100pF, SW = VCC (Figure 4) Full - 65 250 ns Driver Enable from Shutdown to Output High tZH(SHDN) RL = 500Ω, CL = 100pF, SW = GND (Figure 4) Full - 152 250 ns RDIFF = 54Ω, CL = 100pF (Figure 3) Full - 30 - Mbps Driver Maximum Data Rate fMAX RS-485 DRIVER SWITCHING CHARACTERISTICS (SLOW DATA RATE (115kbps), PORT 2, (SLOW485 = GND)) Driver Differential Input to Output Delay tDLH, tDHL RDIFF = 54Ω, CL = 100pF (Figure 3) Full 800 1500 2500 ns Driver Output Skew tSKEW RDIFF = 54Ω, CL = 100pF (Figure 3) Full - 350 1250 ns Driver Differential Rise or Fall Time tR, tF RDIFF = 54Ω, CL = 100pF (Figure 3) Full 1000 2000 3100 ns Driver Enable to Output Low tZL CL = 100pF, SW = VCC (Figure 4) Full - 32 600 ns Driver Enable to Output High tZH CL = 100pF, SW = GND (Figure 4) Full - 300 600 ns Driver Disable from Output Low tLZ CL = 15pF, SW = VCC (Figure 4) Full - 31 60 ns Driver Disable from Output High tHZ CL = 15pF, SW = GND (Figure 4) Full - 24 60 ns Driver Enable from Shutdown to Output Low tZL(SHDN) RL = 500Ω, CL = 100pF, SW = VCC (Figure 4) Full - 65 800 ns Driver Enable from Shutdown to Output High tZH(SHDN) RL = 500Ω, CL = 100pF, SW = GND (Figure 4) Full - 420 800 ns RDIFF = 54Ω, CL = 100pF (Figure 3) Full - 800 - kbps Driver Maximum Data Rate fMAX RS-485 RECEIVER SWITCHING CHARACTERISTICS (PORT 2, ALL SPEEDS) Receiver Input to Output Delay tPLH, tPHL (Figure 5) Full 20 50 90 ns Receiver Skew | tPLH - tPHL | tSKEW (Figure 5) Full - 0.1 10 ns Receiver Maximum Data Rate fMAX Full - 40 - Mbps Receiver Enable to Output Low tZL CL = 15pF, SW = VCC (Figure 6) Full - 22 60 ns Receiver Enable to Output High tZH CL = 15pF, SW = GND (Figure 6) Full - 23 60 ns Receiver Disable from Output Low tLZ CL = 15pF, SW = VCC (Figure 6) Full - 24 60 ns Receiver Disable from Output High tHZ CL = 15pF, SW = GND (Figure 6) Full - 25 60 ns FN8775 Rev 1.00 Oct 21, 2016 Page 8 of 23 ISL33354E, ISL33357E Electrical Specifications Test Conditions: VCC = 4.5V to 5.5V, C1 - C4 = 0.1µF, unless otherwise specified. Typicals are at VCC = 5V, TA = +25°C (Note 10). (Continued) Boldface limits apply across the operating temperature range, -40°C to +85°C. (Continued) PARAMETER SYMBOL Receiver Enable from Shutdown to Output Low tZLSHDN Receiver Enable from Shutdown to Output High tZHSHDN TEMP (°C) MIN (Note 15) TYP MAX (Note 15) UNIT CL = 15pF, SW = VCC (Figure 6) Full - 260 700 ns CL = 15pF, SW = GND (Figure 6) Full - 260 700 ns TEST CONDITIONS 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. Supply current specification is valid for loaded RS-485 (port 2) drivers when DE485 = 0V. 12. Applies to peak current. See “Typical Performance Curves” on page 12 for more information. 13. A, B, RxIN defaults to RS-485 mode (>15kΩ) when the device is unpowered (VCC = 0V), or in SHDN. 14. VCC ≤ 5.25V. 15. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design. Test Circuits and Waveforms R DE485 VCC Z DI RD D VOD Y VOC R FIGURE 2. RS-485 DRIVER VOD AND VOC TEST CIRCUIT 3V DI 50% 50% 0V tPLH tPHL VOH 50% OUT (Y) 50% VOL tPHL tPLH VOH VCC CL = 100pF DE485 OUT (Z) 50% VOL tDLH Z DI RDIFF D Y SIGNAL GENERATOR CL = 100pF 50% 90% DIFF OUT (Y - Z) 10% tDHL 0V 0V +VOD 90% 10% -VOD tF tR SKEW = |tPLH (Y or Z) - tPHL (Z or Y)| FIGURE 3A. TEST CIRCUIT FIGURE 3B. MEASUREMENT POINTS FIGURE 3. RS-485 DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES FN8775 Rev 1.00 Oct 21, 2016 Page 9 of 23 ISL33354E, ISL33357E Test Circuits and Waveforms (Continued) DE485 Z DI 500? VCC D SIGNAL GENERATOR GND SW Y ENABLED DE485 (SHDN FOR SHDN) 3V 50% 50% 0V CL tZH tZH(SHDN) FOR SHDN TESTS, SWITCH SHDN RATHER THAN DE485 PARAMETER SHDN/DE485 OUTPUT OUTPUT HIGH OUT (Y, Z) DI SW CL (pF) tHZ 1/- Y/Z 1/0 GND 15 tLZ 1/- Y/Z 0/1 VCC 15 tZH 1/- Y/Z 1/0 GND 100 tZL 1/- Y/Z 0/1 VCC 100 tZH(SHDN) -/1 Y/Z 1/0 GND 100 tZL(SHDN) -/1 Y/Z 0/1 VCC 100 tHZ VOH - 0.5V VOH 2.3V 0V tZL tZL(SHDN) tLZ VCC OUT (Y, Z) 2.3V OUTPUT LOW VOL + 0.5V V OL FIGURE 4B. MEASUREMENT POINTS FIGURE 4A. TEST CIRCUIT FIGURE 4. RS-485 DRIVER ENABLE AND DISABLE TIMES RE485 0V +1.5V 15pF B R A A RO 0V 0V -1.5V tPLH tPHL VCC SIGNAL GENERATOR RO 1.5V 1.5V 0V FIGURE 5B. MEASUREMENT POINTS FIGURE 5A. TEST CIRCUIT FIGURE 5. RS-485 RECEIVER PROPAGATION DELAY RE485 B R SIGNAL GENERATOR 1k? RO VCC SW A GND SHDN (FOR SHDN TESTS) 3V 1.5V 15pF 0V ENABLED RE485 1.5V FOR SHDN TESTS, SWITCH SHDN RATHER THAN RE485 3V 1.5V 0V PARAMETER SHDN/RE485 A SW tHZ 1/- +1.5V GND tLZ 1/- -1.5V VCC tZH 1/- +1.5V GND tZH tZH(SHDN) RO OUTPUT HIGH tHZ VOH - 0.5V VOH 1.5V 0V tZL 1/- -1.5V VCC tZH(SHDN) -/0 +1.5V GND tZL tZL(SHDN) tZL(SHDN) -/0 -1.5V VCC RO tLZ VCC 1.5V OUTPUT LOW FIGURE 6A. TEST CIRCUIT VOL + 0.5V V OL FIGURE 6B. MEASUREMENT POINTS FIGURE 6. RS-485 RECEIVER ENABLE AND DISABLE TIMES FN8775 Rev 1.00 Oct 21, 2016 Page 10 of 23 ISL33354E, ISL33357E Test Circuits and Waveforms (Continued) 3V SHDN VCC TxIN TxIN D 1.5V 1.5V CL TxOUT 0V tDPHL RL SIGNAL GENERATOR tDPLH VO+ TxOUT 0V 0V VO- SKEW = |tDPHL - tDPLH| FIGURE 7B. MEASUREMENT POINTS FIGURE 7A. TEST CIRCUIT FIGURE 7. RS-232 DRIVER PROPAGATION DELAY AND TRANSITION TIMES 3V SHDN VCC RxIN RxIN RxOUT R 50% 50% CL = 15pF 0V tRPLH tRPHL SIGNAL GENERATOR VOH RxOUT 50% 50% VOL SKEW = |tRPHL - tRPLH| FIGURE 8A. TEST CIRCUIT FIGURE 8B. MEASUREMENT POINTS FIGURE 8. RS-232 RECEIVER PROPAGATION DELAY AND TRANSITION TIMES FN8775 Rev 1.00 Oct 21, 2016 Page 11 of 23 ISL33354E, ISL33357E Typical Performance Curves VCC = 5V, TA = +25°C, unless otherwise specified 100 VOL, +25°C DRIVER OUTPUT CURRENT (mA) RECEIVER OUTPUT CURRENT (mA) 50 40 VOL, +85°C 30 20 VOH, +25°C VOH, +85°C 10 0 0 1 2 3 4 RECEIVER OUTPUT VOLTAGE (V) 90 80 70 60 50 40 30 20 10 0 5 FIGURE 9. RECEIVER OUTPUT CURRENT vs RECEIVER OUTPUT VOLTAGE 0 1 2 3 4 DIFFERENTIAL OUTPUT VOLTAGE (V) 5 FIGURE 10. RS-485, DRIVER OUTPUT CURRENT vs DIFFERENTIAL OUTPUT VOLTAGE 150 Y OR Z = LOW 100 OUTPUT CURRENT (mA) DIFFERENTIAL OUTPUT VOLTAGE (V) 3.6 3.5 RDIFF = 100Ω 3.4 3.3 3.2 RDIFF = 54Ω 3.1 FULL TEMP RANGE 50 0 Y OR Z = HIGH -50 +25°C +85°C -100 -40°C 3.0 -40 -25 0 50 25 75 -150 85 -7 -6 -4 -2 TEMPERATURE (°C) FIGURE 11. RS-485, DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs TEMPERATURE 4.0 0 2 4 6 OUTPUT VOLTAGE (V) 8 10 12 FIGURE 12. RS-485, DRIVER OUTPUT CURRENT vs SHORT-CIRCUIT VOLTAGE SHDN = VCC 3.5 ICC (mA) 3.0 2.5 2.0 1.5 1.0 -40 -25 0 25 50 75 85 TEMPERATURE (°C) FIGURE 13. SUPPLY CURRENT vs TEMPERATURE FN8775 Rev 1.00 Oct 21, 2016 Page 12 of 23 ISL33354E, ISL33357E Typical Performance Curves VCC = 5V, TA = +25°C, unless otherwise specified (Continued) 400 1700 RDIFF = 54?, CL = 100pF RDIFF = 54?, CL = 100pF 350 |tPHLZ - tPLHY| 300 1600 SKEW (ns) tDHL 1550 tDLH 1500 200 150 100 tDHL 1450 |tPLHZ - tPHLY| 250 |tDLH - tDHL| 50 1400 -40 -25 0 25 50 75 85 -40 0 -25 TEMPERATURE (°C) FIGURE 14. RS-485, DRIVER PROPAGATION DELAY vs TEMPERATURE (SLOW DATA RATE) 2.5 RDIFF = 54?, CL = 100pF RDIFF = 54?, CL = 100pF 2.0 35 |tDLH - tDHL| tDHL 30 tDLH 1.5 1.0 |tPLHZ - tPHLY| 25 0.5 20 -40 -25 0 25 50 |tPHLZ - tPLHY| 0 -40 -25 85 75 TEMPERATURE (°C) 5 0 5 RO 0 4 3 2 DRIVER OUTPUT (V) 5 Z Y 1 0 TIME (400ns/DIV) FIGURE 18. RS-485, DRIVER AND RECEIVER WAVEFORMS, LOW TO HIGH (SLOW DATA RATE) FN8775 Rev 1.00 Oct 21, 2016 RECEIVER OUTPUT (V) DI 25 50 75 85 FIGURE 17. RS-485, DRIVER SKEW vs TEMPERATURE (FAST DATA RATE) DRIVER INPUT (V) RECEIVER OUTPUT (V) RDIFF = 60?, CL = 100pF 0 TEMPERATURE (°C) FIGURE 16. RS-485, DRIVER PROPAGATION DELAY vs TEMPERATURE (FAST DATA RATE) DRIVER OUTPUT (V) 85 75 FIGURE 15. RS-485, DRIVER SKEW vs TEMPERATURE (SLOW DATA RATE) SKEW (ns) PROPAGATION DELAY (ns) 40 50 25 TEMPERATURE (°C) RDIFF = 60?, CL = 100pF DI 5 5 0 RO 0 DRIVER INPUT (V) PROPAGATION DELAY (ns) 1650 5 4 3 2 1 Y Z 0 TIME (400ns/DIV) FIGURE 19. RS-485, DRIVER AND RECEIVER WAVEFORMS, HIGH TO LOW (SLOW DATA RATE) Page 13 of 23 ISL33354E, ISL33357E DI 0 5 RO 0 5 4 Z 3 2 RDIFF = 60?, CL = 100pF Y 1 0 0 5 RO 0 5 4 Y 3 2 Z 1 0 TIME (200ns/DIV) TIME (10ns/DIV) FIGURE 21. RS-485, DRIVER AND RECEIVER WAVEFORMS, HIGH TO LOW (FAST DATA RATE) FIGURE 20. RS-485, DRIVER AND RECEIVER WAVEFORMS, LOW TO HIGH (FAST DATA RATE) VOUT+ 2.5 BOTH TOUTS LOADED WITH 3k? TO GND 0 500kbps 2 TRANSMITTERS AT 250kbps OR 500kbps -2.5 500kbps -5.0 -7.5 VOUT 250kbps 0 1000 2000 3000 4000 5000 TRANSMITTER OUTPUT VOLTAGE (V) 7.5 250kbps RS-232 REGION OF NONCOMPLIANCE TRANSMITTER OUTPUT VOLTAGE (V) 7.5 5.0 5 DI DRIVER INPUT (V) 5 RECEIVER OUTPUT (V) RDIFF = 60?, CL = 100pF DRIVER INPUT (V) VCC = 5V, TA = +25°C, unless otherwise specified (Continued) DRIVER OUTPUT (V) DRIVER OUTPUT (V) RECEIVER OUTPUT (V) Typical Performance Curves 5.0 VOUT+ 2.5 OUTPUTS STATIC BOTH TOUTS LOADED WITH 3k? TO GND 0 -2.5 -5.0 VOUT - -7.5 -40 -25 0 25 50 75 85 TEMPERATURE (°C) LOAD CAPACITANCE (pF) FIGURE 23. RS-232, TRANSMITTER OUTPUT VOLTAGE vs TEMPERATURE FIGURE 22. RS-232, TRANSMITTER OUTPUT VOLTAGE vs LOAD CAPACITANCE TRANSMITTER OUTPUT CURRENT (mA) 40 30 5V Y or Z = LOW 20 0 10 0 CL = 3500pF, 2 CHANNELS SWITCHING TxIN 5V VOUT SHORTED TO GND TxOUT/RxIN 0 -10 -5V -20 5V Y or Z = HIGH -30 RxOUT 0 -40 -40 -25 0 50 25 TEMPERATURE (°C) 75 85 FIGURE 24. RS-232, TRANSMITTER SHORT-CIRCUIT CURRENT vs TEMPERATURE FN8775 Rev 1.00 Oct 21, 2016 2µs/DIV FIGURE 25. RS-232, TRANSMITTER AND RECEIVER WAVEFORMS AT 250kbps Page 14 of 23 ISL33354E, ISL33357E Typical Performance Curves VCC = 5V, TA = +25°C, unless otherwise specified (Continued) 60 5V RECEIVER + DUTY CYCLE (%) CL = 1000pF, 2 CHANNELS SWITCHING TxIN 0 5V TxOUT/RxIN 0 -5V 5V VIN = 5V FULL TEMP RANGE 58 56 54 SR IN = 15V/µs 52 SR IN = 100V/µs 50 RxOUT 0 48 500 50 1µs/DIV FIGURE 26. RS-232, TRANSMITTER AND RECEIVER WAVEFORMS AT 500kbps 1500 2000 FIGURE 27. RS-232, RECEIVER OUTPUT + DUTY CYCLE vs DATA RATE 1000 BOTH TOUTS LOADED WITH 5k? TO GND 900 800 700 2 TRANSMITTERS AT +25°C 600 1 TRANSMITTER AT +25°C 500 400 300 1 TRANSMITTER AT +85°C 200 2 TRANSMITTERS AT +85°C 100 100 1000 2000 3000 LOAD CAPACITANCE (pF) VOUT+ 5.0 +25°C +85°C 2.5 2 TRANSMITTERS SWITCHING 0 BOTH TOUTS LOADED WITH 5kΩ TO GND, CL = 1000pF -2.5 +85°C -5.0 VOUT - +25°C -7.5 4000 0 5000 100 200 300 400 500 600 700 800 DATA RATE (kbps) FIGURE 28. RS-232, TRANSMITTER MAXIMUM DATA RATE vs LOAD CAPACITANCE FIGURE 29. RS-232, TRANSMITTER OUTPUT VOLTAGE vs DATA RATE Die Characteristics SUBSTRATE AND QFN PAD POTENTIAL (POWERED UP): 450 2 TRANSMITTERS SWITCHING 400 BOTH TOUTS LOADED WITH 3k? TO GND, CL = 1000pF GND PROCESS: SKEW (ns) 350 +85°C BiCMOS 300 250 +25°C 200 150 50 150 250 350 450 550 650 750 DATA RATE (kbps) FIGURE 30. RS-232, TRANSMITTER SKEW vs DATA RATE FN8775 Rev 1.00 Oct 21, 2016 RS-232 REGION OF NONCOMPLIANCE VOUT ±4V TRANSMITTER OUTPUT VOLTAGE (V) 7.5 1100 DATA RATE (kbps) 1000 DATA RATE (kbps) Page 15 of 23 ISL33354E, ISL33357E Typical Application Detailed Description RS-232 to RS-485 Converter Each of the ISL3335XE parts supports dual protocols: RS-485/422 (port 2), and RS-232 (port 1). RS-485 and RS-422 are differential (balanced) data transmission standards for use in high speed (up to 20Mbps) networks, or long haul and noisy environments. The differential signaling, coupled with RS-485’s requirement for an extended Common-Mode Range (CMR) of +12V to -7V make these transceivers extremely tolerant of ground potential differences, as well as voltages induced in the cable by external fields. Both of these effects are real concerns when communicating over the RS-485/422 maximum distance of 4000’ (1220m). The ISL33354E, ISL33357E are ideal for implementing a single IC 2-wire (Tx Data, Rx Data) protocol converter, because each port is programmed for a different protocol. Figure 31 illustrates the simple connections to create a single transceiver RS-232 to RS-422 converter. Depending on the RS-232 data rate, using an RS-422 bus as an RS-232 “extension cord” can extend the transmission distance up to 4000’ (1220m). A similar circuit on the other end of the cable completes the conversion to/from RS-232. +5V C1 0.1µF C2 0.1µF + 0.1µF 1 C1+ 2 C128 C2+ + 27 C2+ NC 4 R1IN TxD RS-232 IN 5 R2IN 5kΩ 5kΩ NC 6 T1OUT RxD RS-232 OUT 7 T2OUT RS-422 IN RS-422 OUT 13 B 12 A 11 Z 10 Y 9, 26 VCC V+ 3 +C3 0.1µF V- 17 + C4 0.1µF R1OUT 24 NC R R R2OUT 25 D D Conversely, RS-485 is a true multipoint standard, which allows up to 32 devices (any combination of drivers - must be tri-statable - and receivers) on each bus. Now, bidirectional communication takes place on a single bus, so the Rx inputs and Tx outputs of a port connect to the same bus lines, as shown in Figure 32. Port 2 is set to RS-485/422 mode and includes one Rx and one Tx. T1IN 22 T2IN 23 RO R RS-232 is a point-to-point, single ended (signal voltages referenced to GND) communication protocol targeting fairly short (
ISL33337EIRZ-T7A 价格&库存

很抱歉,暂时无法提供与“ISL33337EIRZ-T7A”相匹配的价格&库存,您可以联系我们找货

免费人工找货