TJA1081BTS,112

Specialized Overview

The TJA1081B is a FlexRay node transceiver compliant with specification V3.0.1, designed for data rates from 2.5 Mbit/s to 10 Mbit/s. It supports 14 V, 24 V, and 48 V systems with a VBAT operating range of 4.75 V to 60 V. The device features enhanced low-power modes optimized for battery-connected ECUs, including Standby, Go-to-sleep, and Sleep states. It provides differential transmit and receive capabilities, excellent EMC performance, and effective ESD protection. The component includes internal voltage and temperature monitoring, short-circuit detection, and fail-silent behavior. It is fully function and footprint compatible with the TJA1081.

Specialized Feature Summary

• Compliant with FlexRay electrical physical layer specification V3.0.1 and meets JASPAR requirements via increased voltage amplitude transmitter class.
• Features enhanced low-power management with very low current consumption in Sleep and Standby modes, supporting local and remote wake-up.
• Provides active system performance monitoring through dedicated error and status information, including overtemperature and short-circuit detection.
• Offers robust protection against ±6 kV ESD pulses and transients, ensuring fail-silent behavior during undervoltage conditions.

Specialized Applications

• Time-triggered communication systems in automotive networks
• ECUs permanently connected to the vehicle battery
• FlexRay network nodes requiring high electromagnetic immunity

Specialized Procurement Notes

Verify the specific ordering suffix '112' against official NXP documentation to confirm package variant or tape-and-reel specifications. Confirm that the TJA1081B remains available for new designs, noting that the TJA1081G is recommended as the primary replacement due to production continuity guarantees under the NXP longevity program.

Specialized Selection Notes

Select this component for applications requiring compliance with FlexRay V3.0.1 and support for 14 V, 24 V, or 48 V power systems. Ensure the design accommodates the SSOP16 package dimensions. Consider the TJA1081G if long-term supply assurance is a critical requirement for the product lifecycle.

Specialized Part Context

The TJA1081B belongs to NXP's FlexRay transceiver portfolio, serving as an interface between protocol controllers and the physical bus. It is part of the broader automotive networking solutions aimed at electrification and powertrain applications. The device complements other NXP components like CAN transceivers and microcontrollers in complex vehicle architectures.

Specialized Replacement Considerations

The TJA1081G is the recommended replacement for new designs. It offers full functional and footprint compatibility with the TJA1081B while providing guaranteed production continuity under the NXP longevity program.

Specialized FAQ

Is the TJA1081B fully compatible with the TJA1081?

Yes, the TJA1081B is fully function and footprint compatible with the TJA1081.

What are the supported data transfer rates?

The TJA1081B supports data transfer rates from 2.5 Mbit/s to 10 Mbit/s.

How does the device handle undervoltage conditions?

It exhibits fail-silent behavior by switching to low-power modes (Standby or Sleep) when undervoltage is detected on VCC, VIO, or VBAT pins.