MAX3443ECSA+T

MAX3440E–MAX3444E ±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers General Description The MAX3440E–MAX3444E fault-protected RS-485 and J1708 transceivers feature ±60V protection from signal faults on communication bus lines. Each device contains one differential line driver with three-state output and one differential line receiver with three-state input. The 1/4-unitload receiver input impedance allows up to 128 transceivers on a single bus. The devices operate from a 5V supply at data rates of up to 10Mbps. True fail-safe inputs guarantee a logic-high receiver output when the receiver inputs are open, shorted, or connected to an idle data line. Hot-swap circuitry eliminates false transitions on the data bus during circuit initialization or connection to a live backplane. Short-circuit current-limiting and thermal shutdown circuitry protect the driver against excessive power dissipation, and on-chip ±15kV ESD protection eliminates costly external protection devices. The MAX3440E–MAX3444E are available in 8-pin SO and PDIP packages and are specified over industrial and automotive temperature ranges. Applications ●● ●● ●● ●● ●● ±15kV ESD Protection ●● ±60V Fault Protection ●● Guaranteed 10Mbps Data Rate (MAX3441E/MAX3443E) ●● Hot Swappable for Telecom Applications ●● True Fail-Safe Receiver Inputs ●● Enhanced Slew-Rate-Limiting Facilitates Error-Free Data Transmission (MAX3440E/MAX3442E/MAX3444E) ●● Allow Up to 128 Transceivers on the Bus ●● -7V to +12V Common-Mode Input Range ●● Automotive Temperature Range (-40°C to +125°C) ●● Industry-Standard Pinout Ordering Information PART TEMP RANGE PIN-PACKAGE -40°C to +85°C 8 SO MAX3440EEPA+ -40°C to +85°C 8 PDIP MAX3440EASA+ -40°C to +125°C 8 SO MAX3440EESA+ RS-422/RS-485 Communications Industrial Networks Telecommunications Systems HVAC Controls Selector Guide PART Features TYPE MAX3440EAPA+ -40°C to +125°C 8 PDIP +Denotes a lead(Pb)-free/RoHS-compliant package. Ordering Information continued at end of data sheet. DATA RATE (Mbps) LOW-POWER SHUTDOWN RECEIVER/DRIVER ENABLE TRANSCEIVERS ON BUS HOT SWAP MAX3440E RS-485 0.25 No Yes 128 Yes MAX3441E RS-485 2.5 to 10 No Yes 128 Yes MAX3442E RS-485 0.25 Yes Yes 128 Yes MAX3443E RS-485 2.5 to 10 Yes Yes 128 Yes MAX3444E J1708 0.25 Yes Yes 128 Yes (only RE) Pin Configurations and Typical Operating Circuits TOP VIEW FAULT 1 RO 2 + R DE/RE 3 DI 4 D DIP/SO 8 VCC FAULT 1 7 B 6 A 5 GND RO 2 DE/RE + R 3 DI 4 D DIP/SO 8 VCC 7 B Rt 6 A 5 GND Pin Configurations and Typical Operating Circuits continued at end of data sheet. 19-2666; Rev 3; 4/14 DE/RE MAX3440E MAX3441E Rt D B A DI RO R FAULT MAX3440E–MAX3444E ±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers Absolute Maximum Ratings Voltages Referenced to GND VCC.........................................................................................+7V FAULT, DE/RE, RE, DE, DE, DI, TXD....... -0.3V to (VCC + 0.3V) A, B (Note 1)........................................................................±60V RO............................................................. -0.3V to (VCC + 0.3V) Short-Circuit Duration (RO, A, B)...............................Continuous Continuous Power Dissipation (TA = +70°C) SO (derate 5.9mW/°C above +70°C)...........................471mW PDIP (derate 9.09mW/°C above +70°C)......................727mW Operating Temperature Ranges MAX344_EE_ _............................................... -40°C to +85°C MAX344_EA_ _............................................. -40°C to +125°C Storage Temperature Range............................. -65°C to +150°C Junction Temperature.......................................................+150°C Lead Temperature (soldering, 10s).................................. +300°C Soldering Temperature (reflow)........................................+260°C Note 1: A, B must be terminated with 54Ω or 100Ω to guarantee ±60V fault protection. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC Electrical Characteristics (VCC = +4.75V to +5.25V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DRIVER Differential Driver Output Change in Magnitude of Differential Output Voltage Driver Common-Mode Output Voltage Change in Magnitude of Common-Mode Voltage VOD ∆VOD VOC ∆VOC Figure 1, RL = 100Ω Figure 1, RL = 54Ω 2 VCC 1.5 VCC Figure 1, RL = 100Ω or 54Ω (Note 2) Figure 1, RL = 100Ω or 54Ω VCC / 2 Figure 1, RL = 100Ω or 54Ω (Note 2) V 0.2 V 3 V 0.2 V DRIVER LOGIC Driver Input High Voltage Driver Input Low Voltage Driver Input Current VDIH 2 V VDIL IDIN Driver Short-Circuit Output Current (Note 3) IOSD Driver Short-Circuit Foldback Output Current IOSDF 0V ≤ VOUT ≤ +12V -7V ≤ VOUT ≤ VCC (VCC - 1V) ≤ VOUT ≤ +12V (Note 3) 0.8 V ±2 µA +350 -350 +25 -7V ≤ VOUT ≤ +1V (Note 3) -25 mA mA RECEIVER Input Current Receiver Differential Threshold Voltage Receiver Input Hysteresis www.maximintegrated.com VCC = GND, VA, B = 12V IA,B A, B VTH -7V ≤ VCM ≤ +12V ∆VTH 250 VA, B = -7V -150 VA, B = ±60V -200 25 µA ±6 mA -50 mV mV Maxim Integrated │  2 MAX3440E–MAX3444E ±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers DC Electrical Characteristics (continued) (VCC = +4.75V to +5.25V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS RECEIVER LOGIC VCC – 0.6 Output High Voltage VOH Figure 2, IOH = -1.6mA V Output Low Voltage VOL Figure 2, IOL = 1mA 0.4 V Three-State Output Current at Receiver IOZR 0V ≤ VA, B ≤ VCC ±1 µA Receiver Input Resistance RIN -7V ≤ VCM ≤ +12V Receiver Output Short-Circuit Current IOSR 0V ≤ VRO ≤ VCC VCIH DE, DE, RE, DE/RE 48 kW ±95 mA CONTROL Control Input High Voltage Input Current Latch During First Rising Edge IIN 2 DE, DE/RE, RE V 90 µA SUPPLY CURRENT Normal Operation IQ ISHDN Supply Current in Shutdown Mode Supply Current with Output Shorted to ±60V ISHRT No load, DI = VCC or GND MAX3440E (DE/RE = VCC), MAX3442E (DE = VCC, RE = GND), MAX3444E (DE = RE = GND) MAX3441E (DE/RE = VCC), MAX3443E (DE = VCC, RE = GND) 30 mA 10 DE = GND, RE = VCC (MAX3442E/ MAX3443E) 20 DE = GND, RE = VCC, TA = +25°C (MAX3442E/MAX3443E) 10 DE = RE = VCC (MAX3444E) 100 DE = RE = VCC, TA = +25°C (MAX3444E) 10 DE = GND, RE = GND, no load output in three-state (MAX3443E) ±15 µA mA Protection Specifications (VCC = +4.75V to +5.25V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.) PARAMETER SYMBOL CONDITIONS Overvoltage Protection A, B; RSOURCE = 0, RL = 54Ω ESD Protection A, B MIN TYP MAX ±60 Human Body Model UNITS V ±15 kV FAULT DETECTION Receiver Differential Threshold FDIPH VCM = 0V, high limit 270 450 mV Receiver Differential Threshold FDIPL VCM = 0V, low limit -450 -270 mV Fault-Detection Common-Mode Input Voltage Positive Fault-Detection Common-Mode Input Voltage Negative www.maximintegrated.com 12 V -7 V Maxim Integrated │  3 MAX3440E–MAX3444E ±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers Switching Characteristics (MAX3440E/MAX3442E/MAX3444E) (VCC = +4.75V to +5.25V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.) PARAMETER Driver Propagation Delay SYMBOL tPLHA, tPLHB CONDITIONS MIN MAX3440E/MAX3442E, Figure 3, RL = 54Ω, CL = 50pF TYP MAX UNITS 2000 ns 2000 ns 2000 ns 350 ns 200 ns MAX3444E, RDIFF = 60Ω, CDIFF = 100pF Driver Differential Propagation Delay tDPLH, tDPHL Figure 4, RL = 54Ω, CL = 50pF Driver Differential Output Transition Time tLH,tHL Figure 4, RL = 54Ω, CL = 50pF Driver Output Skew RL = 54Ω, CL = 50pF, tSKEWAB, t = |tPLHA - tPHLB|, tSKEWBA SKEWAB tSKEWBA = |tPLHB - tPHLA| Differential Driver Output Skew tDSKEW 200 RL = 54Ω, CL = 50pF, tDSKEW = |tDPLH - tDPHL| Maximum Data Rate fMAX Driver Enable Time to Output High tPDZH Figure 5, RL = 500Ω, CL = 50pF 250 2000 kbps ns Driver Disable Time from Output High tPDHZ Figure 5, RL = 500Ω, CL = 50pF 2000 ns Driver Enable Time from Shutdown to Output High tPDHS Figure 5, RL = 500Ω, CL = 50pF (MAX3442E/MAX3444E) 4.2 µs Driver Enable Time to Output Low tPDZL Figure 6, RL = 500Ω, CL = 50pF 2000 ns Driver Disable Time from Output Low tPDLZ Figure 6, RL = 500Ω, CL = 50pF 2000 ns Driver Enable Time from Shutdown to Output Low tPDLS Figure 6, RL = 500Ω, CL = 50pF (MAX3442E/MAX3444E) 4.2 µs Driver Time to Shutdown tSHDN RL = 500Ω, CL = 50pF (MAX3442E/MAX3444E) 800 ns Receiver Propagation Delay tRPLH, tRPHL Figure 7, CL = 20pF, VID = 2V, VCM = 0V 2000 ns CL = 20pF, tRSKEW = |tRPLH - tRPHL| 200 ns Receiver Output Skew tRSKEW Receiver Enable Time to Output High tRPZH Figure 8, RL = 1kΩ, CL = 20pF 2000 ns Receiver Disable Time from Output High tRPHZ Figure 8, RL = 1kΩ, CL = 20pF 2000 ns Receiver Wake Time from Shutdown tRPWAKE Figure 8, RL = 1Ω, CL = 20pF (MAX3442E/MAX3444E) 4.2 µs Receiver Enable Time to Output Low tRPZL Figure 8, RL = 1kΩ, CL = 20pF 2000 ns Receiver Disable Time from Output Low tRPLZ Figure 8, RL = 1Ω, CL = 20pF 2000 ns Receiver Time to Shutdown tSHDN RL = 50Ω, CL= 50pF (MAX3442E/MAX3444E) 800 ns www.maximintegrated.com Maxim Integrated │  4 MAX3440E–MAX3444E ±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers Switching Characteristics (MAX3441E/MAX3443E) (VCC = +4.75V to +5.25V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.) PARAMETER SYMBOL MAX UNITS Figure 3, RL = 27Ω, CL = 50pF 60 ns tDPLH, tDPHL Figure 4, RL = 54Ω, CL = 50pF 60 ns tLH,tHL Figure 4, RL = 54Ω, CL = 50pF 25 ns 10 ns 10 ns Driver Propagation Delay tPLHA, tPLHB Driver Differential Propagation Delay Driver Differential Output Transition Time Driver Output Skew Differential Driver Output Skew CONDITIONS MIN RL = 54Ω, CL = 50pF, tSKEWAB, t = |tPLHA - tPHLB|, tSKEWBA SKEWAB tSKEWBA = |tPLHB - tPHLA| tDSKEW RL = 54Ω, CL = 50pF, tDSKEW = |tDPLH - tDPHL| TYP Maximum Data Rate fMAX Driver Enable Time to Output High tPDZH Figure 5, RL = 500Ω, CL = 50pF 1200 ns Driver Disable Time from Output High tPDHZ Figure 5, RL = 500Ω, CL = 50pF 1200 ns Driver Enable Time from Shutdown to Output High tPDHS Figure 5, RL = 500Ω, CL = 50pF (MAX3443E) 4.2 µs Driver Enable Time to Output Low tPDZL Figure 6, RL = 500Ω, CL = 50pF 1200 ns Driver Disable Time from Output Low tPDLZ Figure 6, RL = 500Ω, CL = 50pF 1200 ns Driver Enable Time from Shutdown to Output Low tPDLS Figure 6, RL = 500Ω, CL = 50pF (MAX3443E) 4.2 µs Driver Time to Shutdown tSHDN Figure 6, RL = 500Ω, CL = 50pF (MAX3443E) 800 ns Receiver Propagation Delay tRPLH, tRPHL Figure 7, CL = 20pF, VID = 2V, VCM = 0V 85 ns Receiver Output Skew Mbps CL = 20pF, tRSKEW = |tRPLH - tRPHL| 15 ns Receiver Enable Time to Output High tRPZH Figure 8, RL = 1kΩ, CL = 20pF 400 ns Receiver Disable Time from Output High tRPHZ Figure 8, RL = 1kΩ, CL = 20pF 400 ns 4.2 µs Receiver Wake Time from Shutdown Receiver Enable Wake Time from Shutdown tRSKEW 10 tRPWAKE Figure 8, RL = 1kΩ, CL= 20pF (MAX3443E) tRPSH Figure 8, RL = 1kΩ, CL = 20pF 400 ns Receiver Disable Time from Output Low tRPLZ Figure 8, RL = 1kΩ, CL= 20pF 400 ns Receiver Time to Shutdown tSHDN RL = 500Ω, CL= 50pF (MAX3443E) 800 ns Note 2: ∆VOD and ∆VOC are the changes in VOD and VOC, respectively, when the DI input changes state. Note 3: The short-circuit output current applies to peak current just before foldback current limiting; the short-circuit foldback output current applies during current limiting to allow a recovery from bus contention. www.maximintegrated.com Maxim Integrated │  5 MAX3440E–MAX3444E ±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers Typical Operating Characteristics (VCC = +5V, TA = +25°C, unless otherwise noted.) DRIVER DISABLED, RECEIVER ENABLED 3 2 1 16 12 8 DRIVER DISABLED, RECEIVER ENABLED RECEIVER OUTPUT VOLTAGE vs. TEMPERATURE 15 10 5 35 30 25 20 15 10 5 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.0 RECEIVER OUTPUT VOLTAGE (V) 20 RECEIVER OUTPUT CURRENT (mA) 25 40 MAX3443E toc05 RECEIVER OUTPUT CURRENT vs. OUTPUT HIGH VOLTAGE MAX3443E toc04 RECEIVER OUTPUT CURRENT vs. OUTPUT LOW VOLTAGE 4.5 4.0 VOH, IOUT = +10mA 3.5 3.0 2.5 2.0 1.5 VOL, IOUT = -10mA 1.0 0.5 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 -40 -25 -10 5 20 35 50 65 80 95 110 125 OUTPUT HIGH VOLTAGE (V) TEMPERATURE (°C) DRIVER OUTPUT CURRENT vs. DIFFERENTIAL OUTPUT VOLTAGE DIFFERENTIAL OUTPUT VOLTAGE vs. TEMPERATURE A, B CURRENT vs. A, B VOLTAGE (TO GROUND) 50 40 30 20 10 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 DIFFERENTIAL OUTPUT VOLTAGE (VA - VB) (V) www.maximintegrated.com 3.0 RL = 100Ω 2.5 2.0 1.5 RL = 54Ω 1.0 1200 MAX3441E/MAX3443E -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C) RL = 54Ω 800 400 0 -400 -800 -1200 0.5 0 1600 A, B CURRENT (µA) 60 DIFFERENTIAL OUTPUT VOLTAGE (V) 70 2000 MAX3443E toc09 OUTPUT LOW VOLTAGE (V) 3.5 MAX3443E toc06 -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C) MAX3443E toc07 RECEIVER OUTPUT CURRENT (mA) DRIVER OUTPUT CURRENT (mA) -40 -25 -10 5 20 35 50 65 80 95 110 125 MAX3442E/MAX3443E/MAX3444E TEMPERATURE (°C) 30 0 0.01 WTEMPERATURE (°C) 35 80 0.1 MAX3440E/MAX3442E/MAX3444E 0 -40 -25 -10 5 20 35 50 65 80 95 110 125 40 0 1 4 MAX3441E/MAX3443E 0 MAX3443E toc03 DRIVER AND RECEIVER ENABLED SUPPLY CURRENT (A) 4 20 SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE 10 MAX3443E toc08 SUPPLY CURRENT (mA) 5 24 MAX3440E toc02 DRIVER AND RECEIVER ENABLED SUPPLY CURRENT (mA) 6 NO-LOAD SUPPLY CURRENT vs. TEMPERATURE MAX3440E toc01 NO-LOAD SUPPLY CURRENT vs. TEMPERATURE -1600 -2000 DRIVER DISABLED, RECEIVER ENABLED -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 A, B VOLTAGE (V) Maxim Integrated │  6 MAX3440E–MAX3444E ±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers Test Circuits and Waveforms RL 2 A DI VOD D B RL VCC VOC 2 Figure 1. Driver VOD and VOC A VID RO R B 0 VOL IOL (+) VOH IOH (-) Figure 2. Receiver VOH and VOL 3V VOM A DI GENERATOR (NOTE 4) S1 B 0 CL = 50pF (NOTE 5) VCC VOM = 1.5V 1.5V tPLHA OUT D 50Ω DI RL 2 tPHLA VOH VOM A VOM VOL tPHLB VOH + VOL ª 1.5V 2 tPLHB VOH B VOM VOM VOL Figure 3. Driver Propagation Times 3V DI GENERATOR (NOTE 4) 50Ω A D RL B 0 OUT (A–B) CL = 50pF (NOTE 5) tDPHL tDPLH VCC CL 1.5V 1.5V DI CL 50% 10% tLH 90% 90% ª 2.0V 50% 10% ª -2.0V tHL Figure 4. Driver Differential Output Delay and Transition Times www.maximintegrated.com Maxim Integrated │  7 MAX3440E–MAX3444E ±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers Test Circuits and Waveforms (continued) 0 OR 3V DI A DE GENERATOR (NOTE 4) 3V S1 A, B D DE RL = 500W CL = 50pF (NOTE 5) 1.5V 1.5V tPDZH B tPDHS 0 tPDHZ 50W 0.25V A, B VOM = VOH VOM VOH + VOL ª 1.5V 2 0 Figure 5. Driver Enable and Disable Times VCC 0 OR 3V DI A GENERATOR (NOTE 4) S1 tPDLS B CL = 50pF (NOTE 5) 1.5V 1.5V tPDZL DE A, B D DE 3V RL = 500Ω 0 tPDLZ VCC A, B 50Ω VOM 0.25V VOL Figure 6. Driver Enable and Disable Times A GENERATOR (NOTE 4) VID 50Ω R B 2.0V RO (A–B) CL = 20pF (NOTE 5) 1.0V 1.0V 0 tRPLH tRPHL VCC 1.0V 0 RO VOM VOM 0 Figure 7. Receiver Propagation Delay www.maximintegrated.com Maxim Integrated │  8 MAX3440E–MAX3444E ±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers Test Circuits and Waveforms (continued) S3 1.5V S1 A -1.5V VID R RO VCC 1kΩ S2 B GENERATOR (NOTE 4) CL = 20pF (NOTE 5) 50Ω 3V RE 1.5V 0 tRPZH tRPSH tRPWAKE RO S1 OPEN S2 CLOSED VS3 = 1.5V 3V RE 1.5V VOH VCC RO 1.5V 1.5V 0 3V RE 1.5V 0 VOL S1 OPEN S2 CLOSED VS3 = 1.5V 3V RE 1.5V 0 tRPHZ RO 0.5V tRPLZ VOH RO 0 0 tRPZL tRPSL S1 CLOSED S2 OPEN VS3 = -1.5V S1 CLOSED S2 OPEN VS3 = -1.5V VCC 0.5V VOL Figure 8. Receiver Enable and Disable Times Note 4: The input pulse is supplied by a generator with the following characteristics: f = 5MHz, 50% duty cycle; tr ≤ 6ns; Z0 = 50Ω. Note 5: CL includes probe and stray capacitance. www.maximintegrated.com Maxim Integrated │  9 MAX3440E–MAX3444E ±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers Pin Description PIN MAX3440E MAX3441E MAX3442E MAX3443E MAX3444E NAME FUNCTION Fault output. 1 = fault; 0 = normal operation A or B under the following conditions: • A-B differential