XR31235EDTR

XR31233, XR31234, XR31235 ±36V Fault Tolerant, Single 3.3V CAN Bus Transceivers General Description The XR31233, XR31234 and XR31235 are controller area network (CAN) transceivers that conform to the ISO 11898 standard. Each provides transmit and receive signaling rates up to 1Mbps between a differential CAN bus and a CAN controller. These devices are designed with cross-wire protection, overvoltage protection up to ±36V, loss of ground protection, thermal shutdown protection and common-mode transient protection of ±100V making them ideal for harsh environments used in industrial, automotive, transportation and building automation applications. The low power consumption of the 3.3V supply makes these CAN transceivers desirable and are fully interoperable with 5V supplied transceivers on the same bus. They also offer high speed, slope control and low-power standby modes of operation. FEATURES ■■ Single 3.3V operation ■■ ±36V fault tolerance on analog bus pins ■■ Extended -25V to +25V common mode operation ■■ Robust ESD protection: ±16kV HBM (bus pins) ±8kV contact discharge (bus pins) ±3kV HBM (non-bus pins) ■■ Up to 1Mbps data rates ■■ 11898-2 ISO compatible ■■ GIFT/ICT compliant ■■ 5V tolerant LVTTL I/O’s ■■ 200μA low current standby mode ■■ XR31233: Loopback mode ■■ XR31234: Ultra low current sleep mode 50nA typical ■■ XR31235: Autobaud loopback mode APPLICATIONS ■■ Industrial control systems ■■ Motor and robotic control ■■ Building and climate control (HVAC) ■■ Automotive and transportation Ordering Information - Back Page Typical Application Node 1 Node 2 Node 3 Node N MCU or DSP MCU or DSP MCU or DSP MCU or DSP CAN Controller CAN Controller CAN Controller CAN Controller CAN Transceiver XR3123x CAN Transceiver XR3123x CAN Transceiver XR3123x CAN Transceiver XR3123x (with termination) RTERM RTERM Figure 1: Typical CAN Bus REV1A 1/16 XR31233, XR31234, XR31235 Absolute Maximum Ratings Operating Conditions Stresses beyond the limits listed below may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition may affect device reliability and lifetime. VCC supply range..............................................3.0V to 3.6V Operating temperature range....................... -40°C to 125°C Package power dissipation, 8-pin NSOIC ѲJA....128.4°C/W VCC..................................................................... -0.3V to 7V Voltage at any bus terminal (CANH or CANL)... -36V to 36V ESD Ratings Voltage input, transient pulse, CANH and CANL, through 100Ω (Figure 9)................................ -100V to 100V Human Body Model (HBM), bus pins......................... ±16kV Input voltage (D, RS, EN, LBK, AB)................... -0.5V to 7V Output voltage.................................................... -0.5V to 7V Human Body Model (HBM), non-bus pins.................... ±3kV IEC61000-4-2 (Contact Discharge), bus pins............... ±8kV Receiver output current............................... -10mA to 10mA Continuous total power dissipation........................... 540mW Operating junction temperature.................................. 150°C Storage temperature..................................... -65°C to 150°C Lead temperature (soldering 10 seconds).................. 300°C REV1A 2/16 XR31233, XR31234, XR31235 Electrical Characteristics Unless otherwise noted: VCC = 3.0V to 3.6V, TA = TMIN to TMAX. Typical values are at VCC = 3.3V, TA = 25°C Symbol Parameter Conditions Min Typ Max Units Driver DC Characteristics VO(D) Bus output voltage (Dominant) VO Bus output voltage (Recessive) VOD(D) VOD CANH CANL CANH CANL Differential output voltage (Dominant) Differential output voltage (Recessive) D at 0V, RS at 0V, see Figure 3 and Figure 4 2.3 VCC 0.5 1.25 2.3 D at 3V, RS at 0V, see Figure 3 and Figure 4 V V 2.3 D at 0V, RS at 0V, see Figure 3 and Figure 4 1.5 2 3 D at 0V, RS at 0V, see Figure 4 and Figure 5 1.2 2 3 D at 3V, RS at 0V, see Figure 3 and Figure 4 -120 12 mV D at 3V, RS at 0V, No Load -0.5 0.05 V V VOC(PP) Peak-to-peak common-mode output voltage See Figure 12 IIH High-level input current D, EN, LBK, AB D = 2V or EN = 2V or LBK = 2V or AB = 2V –30 30 μA IIL Low-level input current D, EN, LBK, AB D = 0.8V or EN = 0.8V or LBK = 0.8V or AB = 0.8V –30 30 μA VCANH = –25V, CANL Open, see Figure 17 -250 IOS 1 VCANH = 25V, CANL Open, see Figure 17 Short-circuit output current VCANH = –25V, CANH Open, see Figure 17 3 mA -3 VCANH = 25V, CANH Open, see Figure 17 CO Output capacitance See receiver input capacitance IIRS(S) RS input current for standby RS at 0.75 Vcc ICC V 250 -10 μA Sleep EN at 0V, D at VCC, RS at 0V or VCC 0.05 2 Standby RS at VCC, D at VCC, AB at 0V, LBK at 0V, EN at VCC 200 600 Dominant D at 0V, No Load, AB at 0V, LBK at 0V 6 Recessive D at VCC, No Load, AB at 0V, LBK at 0V, RS at 0V, EN at VCC 6 Supply current REV1A μA mA 3/16 XR31233, XR31234, XR31235 Electrical Characteristics, (Continued) Unless otherwise noted: VCC = 3.0V to 3.6V, TA = TMIN to TMAX. Typical values are at VCC = 3.3V, TA = 25°C. Symbol Parameter Conditions Min Typ Max 750 900 Units Receiver DC Characteristics VIT+ Positive-going input threshold voltage VIT- Negative-going input threshold voltage VHYS VOH VOL II AB at 0V, LBK at 0V, EN at VCC, see Table 1 500 Hysteresis voltage (VIT+ to VIT–) High-level output voltage Low-level output voltage Bus input current 650 100 VCC < 3.3V, IO = –4mA, see Figure 8 2.0 VCC ≥ 3.0V, IO = –4mA, see Figure 8 2.4 V IO = 4mA, see Figure 8 CANH or CANL at 25V CANH or CANL at –25V mV Other bus pin at 0V, D at 3 V, AB at 0V, LBK at 0V, RS at 0V, EN at VCC 0.4 400 1250 -1400 -500 μA Input capacitance (CANH or CANL) Pin-to-ground, VI = 0.4 sin (4E6πt) + 0.5V, D at 3V, AB at 0V, LBK at 0V, EN at VCC 40 pF CID Differential input capacitance Pin-to-pin, VI = 0.4 sin (4E6πt) + 0.5V, D at 3V, AB at 0V, LBK at 0V, EN at VCC 20 pF RID Differential input resistance RIN Input resistance (CANH or CANL) to ground CI D at 3V, AB at 0V, LBK at 0V, EN at VCC REV1A 40 100 kΩ 20 50 kΩ 4/16 XR31233, XR31234, XR31235 Electrical Characteristics (Continued) Unless otherwise noted: VCC = 3.0V to 3.6V, TA = TMIN to TMAX. Typical values are at VCC = 3.3V, TA = 25°C. Symbol Parameter Conditions Min Typ Max RS at 0V, see Figure 6 35 85 RS with 10kΩ to ground, see Figure 6 70 125 RS with 100kΩ to ground, see Figure 6 500 870 RS at 0V, see Figure 6 70 120 RS with 10kΩ to ground, see Figure 6 130 180 RS with 100kΩ to ground, see Figure 6 870 1200 RS at 0V, see Figure 6 35 RS with 10kΩ to ground, see Figure 6 60 RS with 100kΩ to ground, see Figure 6 370 Units Driver AC Characteristics tPLH tPHL tsk(p) Propagation delay time, low-to-high-level output Propagation delay time, high-to-low-level output Pulse skew ( |tPHL – tPLH| ) tr Differential output signal rise time tf Differential output signal fall time tr Differential output signal rise time tf Differential output signal fall time tr Differential output signal rise time tf Differential output signal fall time ten(s) Enable time from standby to dominant ten(z) Enable time from sleep to dominant RS at 0V, see Figure 6 RS with 10kΩ to ground, see Figure 6 RS with 100kΩ to ground, see Figure 6 XR31234 ns ns ns 5 70 ns 5 70 ns 30 135 ns 30 135 ns 350 1400 ns 350 1400 ns See Figure 10 0.6 1.5 μs See Figure 11 1 5 μs Receiver AC Characteristics tPLH Propagation delay time, low-to-high-level output 35 60 ns tPHL Propagation delay time, high-to-low-level output 35 60 ns tsk(p) Pulse skew ( |tPHL – tPLH| ) tr Output signal rise time 5 ns tf Output signal fall time(1) 5 ns See Figure 8 (1) 7 ns NOTE: 1. This spec is guaranteed by design and bench characterization. REV1A 5/16 XR31233, XR31234, XR31235 Electrical Characteristics, (Continued) Unless otherwise noted: VCC = 3.0V to 3.6V, TA = TMIN to TMAX. Typical values are at VCC = 3.3V, TA = 25°C. Symbol Parameter Conditions Min Typ Max Units See Figure 14 7.5 12 ns See Figure 15 10 20 ns See Figure 16 35 60 ns RS at 0V, see Figure 13 70 135 RS with 10kΩ to ground, see Figure 13 105 190 RS with 100kΩ to ground, see Figure 13 535 1000 RS at 0V, See Figure 13 70 135 RS with 10kΩ to ground, see Figure 13 105 190 RS with 100kΩ to ground, see Figure 13 535 1000 Device AC Characteristics t(LBK) Loopback delay, driver input to receiver output t(AB1) Loopback delay, driver input to receiver output t(AB2) t(loop1) t(loop2) Loopback delay, bus input to receiver output XR31233 XR31235 Total loop delay, driver input to receiver output, recessive to dominant Total loop delay, driver input to receiver output, dominant to recessive REV1A ns ns 6/16 XR31233, XR31234, XR31235 Pin Configuration D 1 8 RS D 1 8 RS GND 2 7 VCC 3 R 4 CANH GND 2 7 6 CANL VCC 3 5 LBK R 4 Top View, XR31233 D 1 8 RS CANH GND 2 7 CAHN 6 CANL VCC 3 6 CANL 5 EN R 4 5 AB Top View, XR31234 Top View, XR31235 Pin Functions Pin Number Pin Name Type Description 1 D Input CAN transmit data input (LOW for dominant and HIGH for recessive bus states), also called TXD, driver input. 2 GND Power Ground. 3 VCC Power 3.3V power supply input, bypass to ground with 0.1μF capacitor. 4 R Output CAN receive data output (LOW for dominant and HIGH for recessive bus states), also called RXD, receiver output. LBK EN Input Input XR31233 XR31234 Loopback mode input. Input XR31235 Loopback mode. D input loops back to R output. D input does not drive or affect the activity of the CAN bus. Useful for checking connectivity and running diagnostics without disturbing the CAN bus. LBK = 0 Normal mode. D input drives CAN bus. If D = 0, the CAN bus is dominant. If D = 1 the CAN bus is recessive. See Figure 4.. EN = 1 Normal mode. D input drives CAN bus. If D = 0, the CAN bus is dominant. If D = 1 the CAN bus is recessive. See Figure 4. EN = 0 Sleep mode, low power. AB = 1 Autobaud loopback mode. Similar to loopback mode as the D input loops back to R output, except that the R output is a NOR function of the D input and the CAN bus activity. Useful for checking connectivity, running diagnostics and monitoring CAN bus activity, which allows local mode to detect and sync the baud rate up on the CAN bus. AB = 0 Normal mode. D input drives CAN bus. If D = 0, the CAN bus is dominant. If D = 1 the CAN bus is recessive. See Figure 4 Enable input. 5 AB LBK = 1 Autobaud loopback mode input. 6 CANL I/O Low level CAN bus line. 7 CANH I/O High level CAN bus line. 8 RS Input Mode select pin: strong pulldown to GND = high speed mode, strong pullup to VCC = low power mode, 10kΩ to 100kΩ pulldown to GND = slope control mode. REV1A 7/16 XR31233, XR31234, XR31235 Device Functional Modes Driver (XR31233 or XR31235) Inputs Outputs D LBK/AB RS CANH CANL Bus State X X > 0.75 VCC Z Z Recessive L L or open H or open X X H ≤ 0.33 VCC ≤ 0.33 VCC H L Dominant Z Z Recessive Z Z Recessive Receiver (XR31233) Inputs Output Bus State VID = VCANH –VCANL LBK D R Dominant VID ≥ 0.9V L or open X L Recessive VID ≤ 0.5V or open L or open H or open H ? 0.5V < VID < 0.9V L or open H or open ? X X L L X X H H H Receiver (XR31235) Inputs Output Bus State VID = VCANH –VCANL AB D R Dominant VID ≥ 0.9V L or open X L Recessive VID ≤ 0.5V or open L or open H or open H ? 0.5V < VID < 0.9V L or open H or open ? Dominant VID ≥ 0.9V H X L Recessive VID ≤ 0.5V or open H H H Recessive VID ≤ 0.5V or open H L L ? 0.5V < VID < 0.9V H L L Driver (XR31234) Inputs Outputs D EN RS CANH CANL Bus State L H ≤ 0.33 VCC H L Dominant H X ≤ 0.33 VCC Z Z Recessive Open X X Z Z Recessive X X > 0.75 VCC Z Z Recessive X L or open X Z Z Recessive REV1A 8/16 XR31233, XR31234, XR31235 Device Functional Modes (Continued) Receiver (XR31234) Inputs Output Bus State VID = VCANH –VCANL EN R Dominant VID ≥ 0.9V H L Recessive VID ≤ 0.5V or open H H ? 0.5V < VID