TJA1051_10 Datasheet, PDF (1/21 Pages) NXP Semiconductors – High-speed CAN transceiver

TJA1051
High-speed CAN transceiver
Rev. 5 — 29 December 2010
Product data sheet
1. General description
The TJA1051 is a high-speed CAN transceiver that provides an interface between a
Controller Area Network (CAN) protocol controller and the physical two-wire CAN bus.
The transceiver is designed for high-speed (up to 1 Mbit/s) CAN applications in the
automotive industry, providing differential transmit and receive capability to (a
microcontroller with) a CAN protocol controller.
The TJA1051 belongs to the third generation of high-speed CAN transceivers from NXP
Semiconductors, offering significant improvements over first- and second-generation
devices such as the TJA1050. It offers improved ElectroMagnetic Compatibility (EMC)
and ElectroStatic Discharge (ESD) performance, and also features:
• Ideal passive behavior to the CAN bus when the supply voltage is off
• TJA1051T/3 and TJA1051TK/3 can be interfaced directly to microcontrollers with
supply voltages from 3 V to 5 V
These features make the TJA1051 an excellent choice for all types of HS-CAN networks,
in nodes that do not require a standby mode with wake-up capability via the bus.
2. Features and benefits
2.1 General
 Fully ISO 11898-2 compliant
 Suitable for 12 V and 24 V systems
 Low ElectroMagnetic Emission (EME) and high ElectroMagnetic Immunity (EMI)
 V_IO input on TJA1051T/3 and TJA1051TK/3 allows for direct interfacing with 3 V to 5 V
microcontrollers (available in SO8 and very small HVSON8 packages respectively)
 EN input on TJA1051T/E allows the microcontroller to switch the transceiver to a very
low-current Off mode
2.2 Low-power management
 Functional behavior predictable under all supply conditions
 Transceiver disengages from the bus when not powered up (zero load)
2.3 Protection
 High ElectroStatic Discharge (ESD) handling capability on the bus pins
 Bus pins protected against transients in automotive environments
 Transmit Data (TXD) dominant time-out function
 Undervoltage detection on pins V_CC and V_IO