TJA1124: Quad LIN master transceiver for in-vehicle subnetworks

Overview

The TJA1124 is a quad Local Interconnect Network (LIN) master channel device. It provides the interface between a LIN master protocol controller and the physical bus in a LIN network. Each of the four channels contains a LIN transceiver and LIN master termination.

The TJA1124 is primarily intended for in-vehicle sub-networks using baud rates up to 20 kBd and is compliant with LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A, ISO 17987-4:2016 (12 V LIN) and SAE J2602-1.

Power consumption is very low in Low Power mode. However, the TJA1124 can still be woken up via pins SLP and LIN1 to LIN4.

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Features

General

Four LIN master channels in a single package:
- LIN transceiver.
- LIN master termination consisting of a diode and a 1 kΩ ±10 % resistor.
Very low current consumption in Low Power mode with wake-up via SLP or LIN pins.
Option to control an external voltage regulator via the INHN output.
Bus signal shaping optimized for baud rates up to 20 kBd.
VIO input for direct interfacing with 3.3 V and 5 V microcontrollers.
Passive behavior in an unpowered state.
Undervoltage detection.
K-line compatible.
Leadless DHVQFN24 package (3.5 mm × 5.5 mm) supporting improved Automated Optical Inspection (AOI) capability.

Protection

Excellent ElectroMagnetic Immunity (EMI).
Very high ESD robustness: ±6 kV according to IEC61000-4-2 for pins LIN1 to LIN4 and BAT.
Bus terminal and battery pin protected against transients in the automotive environment (ISO 7637).
Bus terminal short-circuit proof to battery and ground.
TXD dominant timeout function.
LIN dominant timeout function.
Thermal protection.

Certifications/Standards

Compliant with:
- LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A.
- ISO 17987-4:2016 (12 V LIN).
- SAE J2602-1.

Product Longevity Program

TJA1124 is included in the Product Longevity Program for 15 years from product launch. Please visit the Product Longevity Page for more information.

MoreLess

Features

General

Four LIN master channels in a single package:
- LIN transceiver.
- LIN master termination consisting of a diode and a 1 kΩ ±10 % resistor.
Very low current consumption in Low Power mode with wake-up via SLP or LIN pins.
Option to control an external voltage regulator via the INHN output.
Bus signal shaping optimized for baud rates up to 20 kBd.
VIO input for direct interfacing with 3.3 V and 5 V microcontrollers.
Passive behavior in an unpowered state.
Undervoltage detection.
K-line compatible.
Leadless DHVQFN24 package (3.5 mm × 5.5 mm) supporting improved Automated Optical Inspection (AOI) capability.

Protection

Excellent ElectroMagnetic Immunity (EMI).
Very high ESD robustness: ±6 kV according to IEC61000-4-2 for pins LIN1 to LIN4 and BAT.
Bus terminal and battery pin protected against transients in the automotive environment (ISO 7637).
Bus terminal short-circuit proof to battery and ground.
TXD dominant timeout function.
LIN dominant timeout function.
Thermal protection.