TJA1055T31J NXP

TJA1055 Enhanced fault-tolerant CAN transceiver Rev. 5 6 December 2013 Product data sheet 1. General description The TJA1055 is the interface between the protocol controller and the physical bus wires in a Controller Area Network (CAN). It is primarily intended for low-speed applications up to 125 kBd in passenger cars. The device provides differential receive and transmit capability but will switch to single-wire transmitter and/or receiver in error conditions. The TJA1055 is the enhanced version of the TJA1054 and TJA1054A. TJA1055 has the same functionality but in addition offering a number of improvements. The most important improvements of the TJA1055 with respect to the TJA1054 and TJA1054A are: Improved ElectroStatic Discharge (ESD) performance Lower current consumption in sleep mode Wake-up signalling on RXD and ERR without V active CC 3 V interfacing with microcontroller possible with TJA1055T/3 2. Features and benefits 2.1 Optimized for in-car low-speed communication Pin-to-pin compatible with TJA1054 and TJA1054A Baud rate up to 125 kBd Up to 32 nodes can be connected Supports unshielded bus wires Very low ElectroMagnetic Emission (EME) due to built-in slope control function and a very good matching of the CANL and CANH bus outputs Very high ElectroMagnetic Immunity (EMI) in normal operating mode and in low power modes Fully integrated receiver filters Transmit Data (TxD) dominant time-out function High ESD robustness: 8 kV Electrostatic Discharge (ESD) protection Human Body Model (HBM) for off-board pins 6 kV Electrostatic Discharge (ESD) protection IEC 61000-4-2 for off-board pins Low-voltage microcontroller support 2.2 Bus failure management Supports single-wire transmission modes with ground offset voltages up to 1.5 V Automatic switching to single-wire mode in the event of bus failures, even when the CANH bus wire is short-circuited to V CCTJA1055 NXP Semiconductors Enhanced fault-tolerant CAN transceiver Automatic reset to differential mode if bus failure is removed Full wake-up capability during failure modes 2.3 Protections Bus pins short-circuit safe to battery and to ground Thermally protected Bus lines protected against transients in an automotive environment An unpowered node does not disturb the bus lines Microcontroller interface without reverse current paths, if unpowered 2.4 Support for low power modes Low current sleep mode and standby mode with wake-up via the bus lines Software accessible power-on reset flag 3. Quick reference data Table 1. Quick reference data Symbol Parameter Conditions Min Typ Max Unit V supply voltage 4.75 - 5.25 V CC V battery supply voltage no time limit 0.3 - +40 V BAT operating mode 5.0 - 40 V load dump - - 58 V I battery supply current sleep mode at -2540 A BAT V =V =V = RTL WAKE INH V =14V T = BAT amb 40 C to +125 C V voltage on pin CANH V 0V V 0V 58 - +58 V CANH CC BAT no time limit with respect to any other pin V voltage on pin CANL V 0V V 0V 58 - +58 V CANL CC BAT no time limit with respect to any other pin V dominant output voltage V =0V V =V O(dom) TXD EN CC on pin CANH I = 40 mA V 1.4 - - V CANH CC =40mA - - 1.4 V on pin CANL I CANL propagation delay TXD no failures --1.5 s t PD(L) (LOW) to RXD (LOW) R =R = CAN L CAN H 125 C = CAN L C = 1 nF CAN H see Figure 4 to Figure 6 1 T virtual junction temperature 40 - +150 C vj 1 Junction temperature in accordance with IEC 60747-1. An alternative definition is: T =T +P R vj amb th(vj-a) where R is a fixed value to be used for the calculation of T . The rating for T limits the allowable th(vj-a) vj vj combinations of power dissipation (P) and operating ambient temperature (T ). amb TJA1055 All information provided in this document is subject to legal disclaimers. NXP B.V. 2013. All rights reserved. Product data sheet Rev. 5 6 December 2013 2 of 26