TJA1081G | FlexRay Node Transceiver

Overview

The TJA1081G FlexRay™ node transceiver is compliant with the FlexRay Electrical Physical Layer specification ISO 17458-4:2013. The TJA1081G is a Clamp 30 transceiver, optimized for applications that are permanently connection to the car battery. It is primarily intended for communication systems operating at between 2.5 Mbit/s and 10 Mbit/s and provides an advanced interface between the protocol controller and the physical bus in a FlexRay network.

Offers an optimized solution for electronic control unit (ECU) applications that are permanently connected to the battery.
Provides a differential transmit capability to the network and a differential receive capability to the FlexRay controller. It offers excellent electromagnetic compatibility (EMC) performance as well as high electrostatic discharge (ESD) protection.

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Features

Optimized for time-triggered communication systems

Compliant with ISO 17458-4:2013 (see Ref. 2)
Automotive product qualification in accordance with AEC-Q100
Data transfer rates from 2.5 Mbit/s to 10 Mbit/s
Supports 60 ns minimum bit time at 400 mV differential input voltage
Very low ElectroMagnetic Emission (EME) to support unshielded cable, meeting the latest industry standards
Differential receiver with high common-mode range for excellent ElectroMagnetic Immunity (EMI), meeting the latest industry standards
Auto I/O level adaptation to host controller supply voltage V_IO
Can be used in 14 V, 24 V and 48 V powered systems
Instant transmitter shut-down interface (BGE pin)

Low-power management

Very low current consumption in Standby mode
Remote wake-up via a wake-up pattern or dedicated FlexRay data frames on the bus lines

Diagnosis and robustness

Enhanced supply voltage monitoring for VCC and VIO
Two error diagnosis modes:
- Status register readout via the Serial Peripheral Interface (SPI)
- Simple error indication via pin ERRN
Overtemperature detection
Short-circuit detection on bus lines
Power-on flag
Clamping diagnosis for pins TXEN and BGE
Bus pins protected against ±6 kV ESD pulses according to IEC61000-4-2 and ±8 kV according to HBM
Bus pins protected against transients in automotive environment (according to ISO 7637 class C)
Bus pins short-circuit proof to battery voltage (14 V, 24 V and 48 V) and ground
Maximum differential voltage between pins BP or BM and any other pin of 60 V
Bus lines remain passive when the transceiver is not powered
No reverse currents from the digital input pins to VIO or VCC when the transceiver is not powered

Functional classes according to FlexRay Electrical Physical Layer specification V 3.0.1

Bus driver - bus guardian control interface
Bus driver - logic level adaptation
Bus driver - remote wake-up

MoreLess

Features

Optimized for time-triggered communication systems

Compliant with ISO 17458-4:2013 (see Ref. 2)
Automotive product qualification in accordance with AEC-Q100
Data transfer rates from 2.5 Mbit/s to 10 Mbit/s
Supports 60 ns minimum bit time at 400 mV differential input voltage
Very low ElectroMagnetic Emission (EME) to support unshielded cable, meeting the latest industry standards
Differential receiver with high common-mode range for excellent ElectroMagnetic Immunity (EMI), meeting the latest industry standards
Auto I/O level adaptation to host controller supply voltage V_IO
Can be used in 14 V, 24 V and 48 V powered systems
Instant transmitter shut-down interface (BGE pin)

Low-power management

Very low current consumption in Standby mode
Remote wake-up via a wake-up pattern or dedicated FlexRay data frames on the bus lines

Diagnosis and robustness

Enhanced supply voltage monitoring for VCC and VIO
Two error diagnosis modes:
- Status register readout via the Serial Peripheral Interface (SPI)
- Simple error indication via pin ERRN
Overtemperature detection
Short-circuit detection on bus lines
Power-on flag
Clamping diagnosis for pins TXEN and BGE
Bus pins protected against ±6 kV ESD pulses according to IEC61000-4-2 and ±8 kV according to HBM
Bus pins protected against transients in automotive environment (according to ISO 7637 class C)
Bus pins short-circuit proof to battery voltage (14 V, 24 V and 48 V) and ground
Maximum differential voltage between pins BP or BM and any other pin of 60 V
Bus lines remain passive when the transceiver is not powered
No reverse currents from the digital input pins to VIO or VCC when the transceiver is not powered