TJR1442
High-speed CAN transceiver with Standby mode
Rev. 1 — 7 September 2020
Product data sheet
1 General description
The TJR1442 is a member of the TJR144x family of transceivers that provide an
interface between a Controller Area Network (CAN) or CAN FD (Flexible Data rate)
protocol controller and the physical two-wire CAN bus. TJR144x transceivers implement
the CAN physical layer as defined in ISO 11898-2:2016 and SAE J2284-1 to SAE
J2284-5, and are fully interoperable with high-speed Classical CAN and CAN FD
transceivers. All TJR144x variants enable reliable communication in the CAN FD fast
phase at data rates up to 5 Mbit/s and are qualified to AEC-Q100 Grade 0, supporting
operation at 150 °C ambient temperature.
The TJR1442 is intended as a simple replacement for high-speed Classical CAN
and CAN FD transceivers, such as the TJA1042 or TJA1044GT from NXP. It offers
pin compatibility and is designed to avoid changes to hardware and software design,
allowing the TJR1442 to be easily retrofitted to existing applications.
An AEC-Q100 Grade 1 variant, the TJA1442, is available to support operation up to
125 °C ambient temperature.
1.1 TJR1442 variants
The TJR1442 comes in two variants, each available in an SO8 or HVSON8 package:
• The TJR1442A is a high-speed CAN transceiver with Normal and Standby modes and
a VIO supply pin. The VIO pin allows for direct interfacing with 3.3 V- and 5 V-supplied
microcontrollers.
• The TJR1442B is a high-speed CAN transceiver with Normal and Standby modes.
2 Features and benefits
2.1 General
• ISO 11898-2:2016, SAE J2284-1 to SAE J2284-5 and SAE J1939-14 compliant
• Standard CAN and CAN FD data bit rates up to 5 Mbit/s
• Low Electromagnetic Emission (EME) and high Electromagnetic Immunity (EMI)
• Qualified according to AEC-Q100 Grade 0
• TJR1442A only: VIO input for interfacing with 3.3 V to 5 V microcontrollers
• All variants are available in SO8 and leadless HVSON8 (3.0 mm x 3.0 mm) packages;
HVSON8 with improved Automated Optical Inspection (AOI) capability.
• Dark green product (halogen free and Restriction of Hazardous Substances (RoHS)
compliant)
2.2 Predictable and fail-safe behavior
• Undervoltage detection with defined handling on all supply pins