XR3075XEDTR-F

XR3072X / XR3078X Data Sheet Low Power, 18V Tolerant, 3.3V RS-485 / RS-422 Transceivers General Description Features The XR3072X and XR3078X high performance RS-485 / RS-422 devices are designed for improved performance in noisy industrial environments and increased tolerance to system faults. ■ The analog bus pins can withstand direct shorts up to ±18V, and are protected against ESD events up to ±15kV. The differential high output driver delivers 10% higher SNR than standard RS-485 / RS-422 devices, affording additional noise margin or extended cable lengths. ■ ■ The receivers include full fail-safe circuitry, guaranteeing a logic-high receiver output when the receiver inputs are open, shorted or undriven. The receiver input impedance is at minimum 96kΩ (1/8 unit load), allowing up to 256 devices on the bus while preserving the full signal margin. ■ ■ ■ The drivers are protected by short circuit detection as well as thermal shutdown, and maintain high impedance in shutdown or when powered off. The XR3072X drivers are slew limited for reduced EMI and error-free communication over long or unterminated data cables. ■ ■ The devices with DE and RE pins include hot swap circuitry to prevent false transitions on the bus during powerup or live insertion, and can enter a 1nA low current shutdown mode for extreme power savings. The transceivers draw less than 600µA from a 3.3V supply, and typically only 300µA when idling with the receivers active. ■ ■ ■ 10% higher SNR (Signal-to-Noise Ratio) compared to other RS-485 devices (1.65V vs. 1.5V) ±18V fault tolerance on analog bus pins Robust ESD (ElectroStatic Discharge) protection:     ±15kV IEC 61000-4-2 Air Gap Discharge ±8kV IEC 61000-4-2 Contact Discharge ±15kV Human Body Model ±4kV Human Body Model on non-bus pins 3.0V to 3.6V operation (3.3V ± 10%) 300µA idle current, 1nA shutdown current Enhanced receiver fail-safe protection for open, shorted or terminated but idle data lines Hot-swap glitch protection on DE and RE pins Driver short circuit current limit and thermal shutdown for overload protection 1/8th unit load allows up to 256 devices on bus Industrial operating temperature range (-40°C to 85°C) Industry standard 8- and 14 -pin NSOIC packages Applications ■ ■ ■ ■ ■ ■ Motor control Security systems Building and process automation Remote utility meter reading Energy monitoring and control Long or unterminated transmission lines Ordering Information - page 15 Product Selector Guide Table 1: Selector Guide Part Number Duplex Data Rate Shutdown Receiver and Driver Enable Transceivers on Bus Footprint XR3072XIDTR-F Half 250kbps Yes Yes 256 SN75176 XR3078XIDTR-F Half 20Mbps Yes Yes 256 SN75176 • www.maxlinear.com• XR3072X / XR3078X 3.3V RS-485 / RS-422 Transceivers Data Sheet Revision History Revision History Document No. Release Date Change Description 1.0.0 Sept 2013 Production release. 1.0.1 Dec 2013 Updated typical driver differential rise / fall time, page 7. 1.0.2 May 2015 1.0.3 8/30/19 8/30/19 Added extended temp range -40°C to 125°C part numbers, updated ISHDN for industrial and extended temp range, updated ordering information table and table #7. ECN# 1525-07. Update to MaxLinear format, update Ordering Information and move to page 15. Move ESD Ratings to below Absolute Maximum Ratings section, Pinout and Block Diagram to Pin Information section, and Product Selector Guide to first page. Remove obsolete products: XR3070X, XR3071X, XR3073X, XR3074X, XR3075X, XR3076X and XR3077X. ii XR3072X / XR3078X Low Power, 18V Tolerant, Data Sheet Table of Contents Table of Contents General Description............................................................................................................................................. i Features............................................................................................................................................................... i Applications ......................................................................................................................................................... i Product Selector Guide....................................................................................................................................... i Specifications ..................................................................................................................................................... 1 Absolute Maximum Ratings...........................................................................................................................................1 ESD Ratings ..................................................................................................................................................................1 Electrical Characteristics ...............................................................................................................................................2 Test Circuits and Timing Diagrams................................................................................................................... 5 Pin Information ................................................................................................................................................. 10 Pin Configuration and Block Diagram .........................................................................................................................10 Pin Descriptions ..........................................................................................................................................................10 Product Description ......................................................................................................................................... 11 Enhanced Fail-Safe .................................................................................................................................................... 11 Receiver Input Filtering .............................................................................................................................................. 11 Hot-Swap Capability ................................................................................................................................................... 11 Driver Output Protection ............................................................................................................................................. 11 Line Length................................................................................................................................................................. 11 ±15kV ESD Protection................................................................................................................................................ 12 ESD Test Conditions .................................................................................................................................................. 12 IEC 61000-4-2 ............................................................................................................................................................ 12 256 Transceivers on the Bus...................................................................................................................................... 12 Low Power Shutdown Mode....................................................................................................................................... 12 Function Tables ................................................................................................................................................ 13 Mechanical Dimensions ................................................................................................................................... 14 NSOIC8 ....................................................................................................................................................................... 14 Ordering Information........................................................................................................................................ 15 8/30/19 iii XR3072X / XR3078X Low Power, 18V Tolerant, Data Sheet List of Figures List of Figures Figure 1: Differential Driver Output Voltage.......................................................................................................... 5 Figure 2: Differential Driver Output Voltage Over Common Mode ....................................................................... 5 Figure 3: Driver Output Short Circuit Current ....................................................................................................... 5 Figure 4: Transient Overvoltage Test Circuit ........................................................................................................ 6 Figure 5: Driver Propagation Delay Test Circuit and Timing Diagram.................................................................. 6 Figure 6: Driver Enable and Disable Timing Test Circuits and Timing Diagrams................................................. 7 Figure 7: Receiver Propagation Delay Test Circuit and Timing Diagram ............................................................. 8 Figure 8: Receiver Enable and Disable Test Circuits and Timing Diagrams ........................................................ 9 Figure 9: Pin Configuration and Half-Duplex Block Diagram.............................................................................. 10 Figure 10: Mechanical Dimension, NSOIC8 ....................................................................................................... 14 8/30/19 iv XR3072X / XR3078X Low Power, 18V Tolerant, Data Sheet List of Tables List of Tables Table 1: Selector Guide ......................................................................................................................................... i Table 1: Absolute Maximum Ratings .................................................................................................................... 1 Table 2: ESD Ratings ........................................................................................................................................... 1 Table 3: Electrical Characteristics ....................................................................................................................... 2 Table 4: Pin Descriptions.................................................................................................................................... 10 Table 5: Half Duplex Transmitting ...................................................................................................................... 13 Table 6: Half Duplex Receiving .......................................................................................................................... 13 Table 7: Ordering Information............................................................................................................................. 15 8/30/19 v XR3072X / XR3078X 3.3V RS-485 / RS-422 Transceivers Data Sheet Specifications Specifications Absolute Maximum Ratings Important: These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability and cause permanent damage to the device. Table 1: Absolute Maximum Ratings Parameter Minimum Maximum Units VCC –0.3 7.0 V Input voltage at control and driver input (RE, DE and DI) –0.3 7.0 V Receiver output voltage (RO) –0.3 VCC + 0.3 V Driver output voltage (A, B, Y & Z) –18 18 V Receiver input voltage (A, B) –18 18 V Transient voltage pulse, through 100Ω, Figure 5 –70 70 V Driver output current –250 250 mA Storage temperature range –65 150 °C 300 °C Lead temperature (soldering, 10s) Package Power Dissipation 8-pin SO, ѲJA = 128.4°C/W 14-pin SO, ѲJA = 86°C/W Maximum junction temperature = 150°C ESD Ratings Table 2: ESD Ratings Parameter Limit Units HBM - Human Body Model (pins A, B, Y & Z) ±15 kV HBM - Human Body Model (all other pins) ±4 kV IEC 1000-4-2 Airgap Discharge (pins A, B, Y & Z) ±15 kV IEC 1000-4-2 Contact Discharge (pins A, B, Y & Z) ±8 kV Caution: ESD (Electrostatic Discharge) sensitive device. Permanent damage may occur on unconnected devices subject to high energy electrostatic fields. Unused devices must be stored in conductive foam or shunts. Personnel should be properly grounded prior to handling this device. The protective foam should be discharged to the destination socket before devices are removed. 8/30/19 1 XR3072X / XR3078X 3.3V RS-485 / RS-422 Transceivers Data Sheet Electrical Characteristics Electrical Characteristics Unless otherwise noted, VCC = 3.3V ±10%, TA = TMIN to TMAX. Typical values are at VCC = 3.3V, TA = 25°C. Table 3: Electrical Characteristics Parameter Symbol Test Condition Minimum Typical Maximum Units Driver DC Characteristics VCC Supply voltage range VOD Differential Driver Output Change in magnitude of differential output voltage DVOD Driver common mode output voltage (steady state) VCM Change in magnitude of commonmode output voltage Logic input thresholds (DI, DE, RE) 3.0 3.6 No load 3 VCC RL = 100 (RS-422), Figure 2 2 VCC RL = 54 (RS-485), Figure 2 1.65 VCC –7V ≤ VCM ≤ 12V, Figure 3 1.5 VCC RL = 54Ω (RS-485) or VCC/2 RL = 100Ω (RS-422), Figure 2(1) DVCM VIH Logic input high VIL Logic input low Logic input current (DI, DE, RE) Logic input current (DE and RE) IIN IA,B Input Current (A and B) Driver short-circuit output current V 3 V ±0.2 V V 0.8 100 0V ≤ VIN ≤ VCC, after first transition(2) Until first transition(2) 100 VOUT = 12V, DE = 0V, VCC = 0V or 5.5V VOUT = –7V, DE = 0V, VCC = 0V or 5.5V IOSD –7V ≤ VOUT ≤ 12V, Figure 4 TTS Junction temperature(4) V ±0.2 2 VHYS Input hysteresis (DI, DE, RE) V V mV ±1 µA ±200 µA 125 µA –100 ±250 mA Driver Thermal Characteristics Thermal shutdown threshold (4) Thermal shutdown hysteresis TTSH 175 °C 15 °C Receiver DC Characteristics Receiver differential threshold voltage (VA - VB) VTH –7V ≤ VCM ≤ 12V –200 -125 -50 mV DVOH VCM = 0V Receiver output high voltage (RO) VOH IO = –1mA Receiver output low voltage (RO) VOL IO = 1mA 0.4 V High-Z receiver output current IOZR 0 ≤ VOUT ≤ VCC ±1 µA Receiver input resistance RIN –7V ≤ VCM ≤ 12V Receiver output short-circuit current IOSC 0V ≤ VRO ≤ VCC Receiver input hysteresis 8/30/19 25 mV VCC - 0.6 V 96 kΩ ±80 mA 2 XR3072X / XR3078X 3.3V RS-485 / RS-422 Transceivers Data Sheet Electrical Characteristics Table 3: Electrical Characteristics (Continued) Parameter Symbol Test Condition Minimum Typical Maximum Units Supply Current Supply current Supply current in shutdown mode ICC ISHDN No load, RE = 0V, DE = VCC, DI = 0V 425 600 No load, RE = VCC, DE = VCC DI = 0V 330 600 No load, RE = 0V, DE = 0V Receiver A and B inputs open 300 500 0.001 1 µA 250 1500 ns 250 1500 ns 200 ns 1600 ns RE = VCC, DE = 0V µA Driver AC Characteristics - XR3072X (250kbps) Driver propagation delay (low to high) tDPLH Driver propagation delay (high to low) tDPHL Differential driver output skew Driver differential output rise or fall time |tDPLH - tDPHL| tDR, tDF Driver enable to output high tDZH Driver enable to output low tDZL Driver disable from output high tDHZ Driver disable from output low tDLZ Driver enable from shutdown to output high tDZH(SHDN) Driver enable from shutdown to output low tDZL(SHDN) 20 350 1/tUI, duty cycle 40% to 60% Maximum data rate Time to shutdown(3, 4) CL = 50pF, RL = 54Ω, Figure 6 250 CL = 50pF, RL = 500Ω, Figure 7 kbps 200 2500 ns 200 2500 ns 6 100 ns 6 100 ns 5500 ns 5500 ns 600 ns 200 ns 200 ns 30 ns CL = 50pF, RL = 500Ω, Figure 7 tSHDN 50 200 Receiver AC Characteristics - XR3072X (250kbps) Receiver propagation delay (low to high) tRPLH Receiver propagation delay (high to low) tRPHL Propagation delay skew 1/tUI, duty cycle 40% to 60% Receiver enable to output high tRZH Receiver enable to output low tRZL Receiver disable from output high tRHZ Receiver disable from output low tRLZ Receiver enable from shutdown to output high tRZH(SHDN) Receiver enable from shutdown to output low tRZL(SHDN) 8/30/19 VID rise and fall times < 15ns Figure 8 tRPLH - tRPHL Maximum data rate Time to shutdown(3, 4) CL = 15pF, VID = ±2V, tSHDN 250 kbps CL = 15pF, RL = 1kΩ, Figure 9 CL = 15pF, RL = 1kΩ, Figure 9 50 200 50 ns 50 ns 50 ns 50 ns 3500 ns 3500 ns 600 ns 3 XR3072X / XR3078X 3.3V RS-485 / RS-422 Transceivers Data Sheet Electrical Characteristics Table 3: Electrical Characteristics (Continued) Parameter Symbol Test Condition Minimum Typical Maximum Units Driver AC Characteristics - XR3078X (20Mbps) Driver propagation delay (low to high) tDPLH Driver propagation delay (high to low) tDPHL Differential driver output skew Driver differential output rise or fall time |tDPLH - tDPHL| tDR, tDF Driver enable to output high tDZH Driver enable to output low tDZL Driver disable from output high tDHZ Driver disable from output low tDLZ Driver enable from shutdown to output high tDZH(SHDN) Driver enable from shutdown to output low tDZL(SHDN) ns 25 ns 5 ns 12 1/tUI, duty cycle 40% to 60% Maximum data rate Time to shutdown(3, 4) CL = 50pF, RL = 54Ω, Figure 6 25 20 Mbps CL = 50pF, RL = 500Ω, Figure 7 CL = 50pF, RL = 500Ω, Figure 7 tSHDN ns 50 200 45 ns 45 ns 40 ns 40 ns 250 ns 250 ns 600 ns 50 ns 50 ns 5 ns Receiver AC Characteristics - XR3078X (20Mbps) Receiver propagation delay (low to high) tRPLH Receiver propagation delay (high to low) tRPHL Propagation delay skew VID rise and fall times < 15ns Figure 8 |tRPLH - tRPHL| 1/tUI, duty cycle 40% to 60% Maximum data rate Receiver enable to output high tRZH Receiver enable to output low tRZL Receiver disable from output high tRHZ Receiver disable from output low tRLZ Receiver enable from shutdown to output high tRZH(SHDN) Receiver enable from shutdown to output low tRZL(SHDN) Time to shutdown(3, 4) CL = 15pF, VID = ±2V, 20 Mbps CL = 15pF, RL = 1kΩ, Figure 9 CL = 15pF, RL = 1kΩ, Figure 9 tSHDN 50 200 30 ns 30 ns 30 ns 30 ns 1800 ns 1800 ns 600 ns 1. Change in magnitude of differential output voltage and change in magnitude of common mode output voltage are the changes in output voltage when DI input changes state. 2. The hot swap feature disables the DE and RE inputs for the first 10µs after power is applied. Following this time period these inputs are weakly pulled to their disabled state (low for DE, high for RE) until the first transition, after which they become high impedance inputs. 3. The transceivers are put into shutdown by bringing RE high and DE low simultaneously for at least 600ns. If the control inputs are in this state for less than 50ns, the device is guaranteed to not enter shutdown. If the enable inputs are held in this state for at least 600ns, the device is assured to be in shutdown. Note that the receiver and driver enable times increase significantly when coming out of shutdown. 4. This spec is guaranteed by design and bench characterization. 8/30/19 4 XR3072X / XR3078X 3.3V RS-485 / RS-422 Transceivers Data Sheet Switching Characteristics Test Circuits and Timing Diagrams Z RL 2 DI = 0V or VCC D VOD VCM RL 2 Y DE = VCC Figure 2: Differential Driver Output Voltage Z 375Ω DI = 0V or VCC D VOD VCM 60Ω 375Ω Y DE = VCC Figure 3: Differential Driver Output Voltage Over Common Mode Z DI = 0V or VCC IOSD D -7V to +12V DE = 0V or VCC V Y Figure 4: Driver Output Short Circuit Current 8/30/19 5 XR3072X / XR3078X 3.3V RS-485 / RS-422 Transceivers Data Sheet Switching Characteristics Device powered on or powered off A or Z Transceiver, Generator, or Receiver 100 VTEST 15us duration 15 duty cycle B or Y Figure 5: Transient Overvoltage Test Circuit DI 3V 1.5V 0V Z 1.5V tDPLH tSKEW = |tDPHL – tDPLH| tDPHL VOD VOD (VY - VZ) Y VOD+ 0V VOD- 90% 90% 10% 10% tDR tDF Z DI D DE = VCC VOD RL CL Y Figure 6: Driver Propagation Delay Test Circuit and Timing Diagram 8/30/19 6 XR3072X / XR3078X 3.3V RS-485 / RS-422 Transceivers Data Sheet Switching Characteristics Z Testing Z: DI = 0V VOUT D Testing Y: DI = VCC RL DE CL Y 3V DE 1.5V 1.5V 0V tDZH VOH tDHZ VOH + VOL 2 VOUT VOH - 0.25V VOL VCC Z RL Testing Z: DI = VCC VOUT D Testing Y: DI = 0V CL DE Y 3V DE 1.5V 1.5V 0V tDZL VOH VOUT VOL VOH + VOL 2 tDLZ VOL + 0.25V Figure 7: Driver Enable and Disable Timing Test Circuits and Timing Diagrams 8/30/19 7 XR3072X / XR3078X 3.3V RS-485 / RS-422 Transceivers Data Sheet Test Circuits and Timing Diagrams B RO R CL A RE = 0V B +1V 0V -1V A tRPLH tRPHL VOH 1.5V RO 1.5V VOL Figure 8: Receiver Propagation Delay Test Circuit and Timing Diagram 8/30/19 8 XR3072X / XR3078X 3.3V RS-485 / RS-422 Transceivers Data Sheet Test Circuits and Timing Diagrams B RO R RE A RL CL 3V RE 1.5V 1.5V 0V tRZH VA = VCC VB = 0V VOH tRHZ VOH 2 RO VOH - 0.25V 0V VCC B RL RO R CL RE A 3V RE 1.5V 1.5V 0V tRZL VA = 0V VB = VCC VCC RO VCC + VOL 2 tRLZ VOL + 0.25V VOL Figure 9: Receiver Enable and Disable Test Circuits and Timing Diagrams 8/30/19 9 XR3072X / XR3078X 3.3V RS-485 / RS-422 Transceivers Data Sheet Pin Information Pin Information Pin Configuration and Block Diagram RO 1 RE R 8 VCC 2 7 B/Z DE 3 6 A/Y DI 4 5 GND D Figure 10: Pin Configuration and Half-Duplex Block Diagram Pin Descriptions Table 4: Pin Descriptions Pin Number Pin Name Type Pin Function 1 RO Out Receiver output. When RE is low and if (A-B) ≤ -50mV, RO is High. If (A-B) ≥ -200mV, RO is low. 2 RE In Receiver output enable (Hot swap). When RE is low, RO is enabled. When RE is high, RO is high impedance. RE should be high and DE should be low to enter shutdown mode. 3 DE In Driver output enable (Hot swap). When DE is high, outputs are enabled. When DE is low, outputs are high impedance. DE should be low and RE should be high to enter shutdown mode. 4 DI In Driver input. With DE high, a low level on DI forces non-inverting output low and inverting output high. Similarly, a high level on DI forces non-inverting output high and inverting output low. 5 GND Pwr Ground. 6 A I/O Non-inverting receiver input and non-inverting driver output. 7 B I/O Inverting receiver input and inverting driver output. 8 VCC Pwr 3.3V positive supply input. Bypass to GND with a 0.1µF capacitor. 8/30/19 10 XR3072X / XR3078X 3.3V RS-485 / RS-422 Transceivers Data Sheet Product Description Product Description The XR3072X and XR3078X RS-485 / RS-422 devices are part of MaxLInear’s X Series high performance serial interface product line. The analog bus pins can survive direct shorts up to ±18V, and are protected against ESD events up to ±15kV. The high output differential driver delivers 10% higher SNR than other RS-485 / 422 devices, affording additional noise margin or extended cable lengths. Enhanced Fail-Safe Ordinary RS-485 differential receivers will be in an indeterminate state whenever the data bus is not being actively driven. The enhanced failsafe feature of the XR3072X and XR3078X guarantees a logic-high receiver output when the receiver inputs are open, shorted, or when they are connected to a terminated transmission line with all drivers disabled. In a terminated bus with all transmitters disabled, the receivers’ differential input voltage is pulled to 0V by the termination. The XR3072X and XR3078X interpret 0V differential as a logic high with a minimum 50mV noise margin while maintaining compliance with the EIA / TIA-485 standard of ±200mV. Although the XR3072X and XR3078X do not need failsafe biasing resistors, they can operate without issue if biasing is used. Receiver Input Filtering The XR3072X receiver incorporates internal filtering in addition to input hysteresis. This filtering enhances noise immunity by ignoring signals that do not meet a minimum pulse width of 30ns. Receiver propagation delay increases slightly due to this filtering. The high speed XR3078X does not have this input filtering. If circuit boards are inserted into an energized backplane (commonly called "live insertion" or "hot-swap"), power may suddenly be applied to all circuits. Without the hotswap capability, this situation could improperly enable the transceiver’s driver or receiver, driving invalid data onto shared buses and possibly causing driver contention or device damage. Driver Output Protection Two mechanisms prevent excessive output current and power dissipation caused by faults or by bus contention. First, a driver current limit on the output stage provides immediate protection against short circuits over the whole common-mode voltage range. Second, a thermal shutdown circuit forces the driver outputs into a high-impedance state if junction temperature becomes excessive. Line Length The RS-485 / RS-422 standard covers line lengths up to 4000ft. Maximum achievable line length is a function of signal attenuation and noise. Termination prevents signal reflections by eliminating the impedance mismatches on a transmission line. Line termination is generally used if rise and fall times are shorter than the round-trip signal propagation time. Higher output drivers may allow longer cables to be used. Hot-Swap Capability When VCC is first applied, the XR3072X and XR3078X hold the driver enable and receiver enable inactive for approximately 10 microseconds. During power ramp-up, other system ICs may drive unpredictable values, or tri-stated lines may be influenced by stray capacitance. The hot-swap feature prevents these devices from driving any output signal until power has stabilized. After the initial 10µs, the driver and receiver enable pins are weakly pulled to their disabled states (low for DE, high for RE) until the first transition. After the first transition, the DE and RE pins operate as high impedance inputs. 8/30/19 11 XR3072X / XR3078X 3.3V RS-485 / RS-422 Transceivers Data Sheet Product Description ±15kV ESD Protection 256 Transceivers on the Bus ESD-protection structures are incorporated on all pins to protect against electrostatic discharges encountered during handling and assembly. The driver output and receiver inputs of the XR3072X and XR3078X have extra protection against static electricity. MaxLinear's uses state of the art structures to protect these pins against ESD of ±15kV without damage. The ESD structures withstand high ESD in all states: normal operation, shutdown and powered down. After an ESD event, the XR3072X and XR3078X keep operating without latch-up or damage. The standard RS-485 receiver input impedance is 12kΩ (1 unit load). A standard driver can drive up to 32 unit loads. The XR3072X and XR3078X have a 1/8th unit load receiver input impedance (96kΩ), allowing up to 256 transceivers to be connected in parallel on a communication line. Any combination of these devices and other RS-485 transceivers up to a total of 32 unit loads may be connected to the line. ESD protection can be tested in various ways. The transmitter outputs and receiver inputs of the XR3072X and XR3078X are characterized for protection to the following limits: ■ ■ ■ ±15kV using the Human Body Model ±8kV using the Contact Discharge Model ±15kV Air-gap Discharge Model ESD Test Conditions ESD performance depends on a variety of conditions. Contact MaxLinear for a reliability report that documents test setup, methodology and results. Low Power Shutdown Mode Low-power shutdown mode is initiated by bringing both RE high and DE low simultaneously. While in shutdown, devices draw less than 1µA of supply current. DE and RE may be tied together and driven by a single control signal. Devices are guaranteed not to enter shutdown if RE is high and DE is low for less than 50ns. If the inputs are in this state for at least 600ns, the parts will enter shutdown. Enable times tZH and tZL apply when the part is not in a low-power shutdown state. Enable times tZH(SHDN) and tZL(SHDN) apply when the parts are shutdown. The drivers and receivers take longer to become enabled from lowpower shutdown mode tZH(SHDN) and tZL(SHDN) than from driver /receiver-disable mode (tZH, tZL). IEC 61000-4-2 The IEC 61000-4-2 standard covers ESD testing and performance of finished equipment. However, it does not specifically refer to integrated circuits. The XR3072X and XR3078X help you design equipment to meet IEC 610004-2, without sacrificing board space and cost for external ESD-protection components. The major difference between tests done using the Human Body Model and IEC 61000-4-2 is higher peak current in IEC 61000-4-2. Series resistance is lower in the IEC 61000-4-2 model. Hence, the ESD withstand voltage measured to IEC 61000-4-2 is generally lower than that of the Human Body Model. The air-gap test involves approaching the device with a charged probe. The contact discharge method connects the probe to the device before the probe is energized. 8/30/19 12 XR3072X / XR3078X 3.3V RS-485 / RS-422 Transceivers Data Sheet Function Tables Function Tables Table 6: Half Duplex Receiving Table 5: Half Duplex Transmitting Receiving Transmitting Inputs Inputs Outputs Output RE DE DI Y Z RE DE VA - VB RO X 1 1 1 0 0 X ≥ -50mV 1 X 1 0 0 1 0 X ≤ -200mV 0 0 0 X High-Z 0 X 1 1 0 X Shutdown Open / shorted 1 1 X High-Z 1 0 X Shutdown 1. Receiver inputs -200mV ≤ VA - VB ≤ -50mV are considered indeterminate. 8/30/19 13 XR3072X / XR3078X 3.3V RS-485 / RS-422 Transceivers Data Sheet Mechanical Dimensions Mechanical Dimensions NSOIC8 Side View Front View Drawing No: Revision: POD-00000108 A Figure 11: Mechanical Dimension, NSOIC8 8/30/19 14 XR3072X / XR3078X 3.3V RS-485 / RS-422 Transceivers Data Sheet Ordering Information Ordering Information Table 7: Ordering Information Operating Temperature Range Package Packaging Method Lead-Free(2) Duplex / Data Rate XR3072XID-F -40°C to 85°C NSOIC8 Tube Yes Half / 250kbps XR3072XIDTR-F -40°C to 85°C NSOIC8 Reel Yes Half / 250kbps XR3078XID-F -40°C to 85°C NSOIC8 Tube Yes Half / 20Mbps XR3078XIDTR-F -40°C to 85°C NSOIC8 Reel Yes Half / 20Mbps Ordering Part Number XR3072X XR3078X 1. Refer to www.maxlinear.com/XR3072X and www.maxlinear.com/XR3078X for most up-to-date Ordering Information. 2. Visit www.maxlinear.com for additional information on Environmental Rating. 8/30/19 15 XR3072X / XR3078X 3.3V RS-485 / RS-422 Transceivers Data Sheet Disclaimer MaxLinear, Inc. 5966 La Place Court, Suite 100 Carlsbad, CA 92008 760.692.0711 p. 760.444.8598 f. www.maxlinear.com The content of this document is furnished for informational use only, is subject to change without notice, and should not be construed as a commitment by MaxLinear, Inc. MaxLinear, Inc. assumes no responsibility or liability for any errors or inaccuracies that may appear in the informational content contained in this guide. Complying with all applicable copyright laws is the responsibility of the user. Without limiting the rights under copyright, no part of this document may be reproduced into, stored in, or introduced into a retrieval system, or transmitted in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise), or for any purpose, without the express written permission of MaxLinear, Inc. Maxlinear, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless MaxLinear, Inc. receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; (c) potential liability of MaxLinear, Inc. is adequately protected under the circumstances. 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