NXP Semiconductors TJA1080TS,118

Overview

TJA1080TS,118 from NXP Semiconductors is a FlexRay transceiver compliant with FlexRay Physical Layer Specification V2.1 Rev. A, serving as the interface between FlexRay protocol controllers and the physical bus in automotive time-triggered networks. It supports data rates up to 10 Mbit/s, operates across 14 V and 42 V automotive systems, and provides differential transmit/receive capability with bus guardian support for active star or linear passive topologies.

For engineers reviewing the TJA1080TS,118 datasheet, TJA1080TS,118 pinout, TJA1080TS,118 application, or TJA1080TS,118 equivalent, this device is critical for high-integrity automotive domain controllers, x-by-wire ECUs, and FlexRay backbone gateways requiring robust EMC performance, integrated diagnostics, and dual-mode (node/star) configuration flexibility.

Technical Context

The TJA1080TS,118 implements a dual-configuration architecture: in node mode, it functions as a standalone transceiver controlled via EN/STBN pins with five selectable power states; in star mode, it autonomously manages eight operating modes-including Star-transmit, Star-receive, and Star-sleep-based on activity detection on BP/BM, TXEN, TRXD0, and TRXD1 lines. Its internal state machine integrates voltage monitoring (VBAT, VCC, VIO), overtemperature detection, and wake-source identification.

It features a fail-safe design that enters defined low-power states under undervoltage conditions, maintains passive bus behavior when unpowered, and delivers differential output voltages of ±600–1200 mV (VOH/VOL) into 40–55 Ω loads. The transceiver supports auto I/O level adaptation to VIO (2.2–5.25 V), includes dedicated error signaling via ERRN, and enables remote wake-up via bus symbols or local wake-up via WAKE pin edge detection.

Key Specifications

Pinout & Package

Package: SSOP20 (SOT339-1), plastic shrink small outline package, 20 leads, body width 5.3 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FlexRay transceiver applications.

Compared with MC33664AEF and TJA1081TS,118, the TJA1080TS,118 uniquely supports both node and active star configurations via TRXD strap pins, offers AEC-Q100 Grade 0 qualification at full temperature range, and delivers integrated bus guardian and multi-source wake-up-making it essential for FlexRay networks requiring topology flexibility and fail-safe behavior.

Availability

TJA1080TS,118 is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, brake-by-wire ECUs, and electric power steering systems requiring stable component supply across long production lifecycles.

Supply support for TJA1080TS,118 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in automotive networking IP and AEC-Q100-qualified components.

The TJA1080TS,118 belongs to NXP's FlexRay transceiver product line, designed specifically for time-triggered, safety-critical automotive networks requiring deterministic latency, fault containment, and multi-topology support in next-generation vehicle architectures.

FAQ

What is the primary function of the TJA1080TS,118 in a FlexRay network?

The TJA1080TS,118 serves as the physical layer interface between a FlexRay protocol controller and the differential bus, enabling bidirectional communication at up to 10 Mbit/s. It handles signal conditioning, bus driving, differential reception, and integrated diagnostics. Its dual-mode capability allows the TJA1080TS,118 to operate either as a standalone node transceiver or as a branch in an active star topology-determined by TRXD0/TRXD1 pin strapping at power-on.

How does the TJA1080TS,118 support automotive power system requirements?

The TJA1080TS,118 supports wide-input automotive supplies: VBAT operates from 6.5 V to 60 V (covering 12 V and 42 V systems), VCC and VBUF from 4.75 V to 5.25 V, and VIO from 2.2 V to 5.25 V. It includes undervoltage detection on all supply pins, fail-safe behavior during brownout, and ≤50 µA sleep current. These features ensure robust operation during cold-crank, load-dump, and stop-start cycles-key requirements for the TJA1080TS,118 in modern vehicle electrical architectures.

Can the TJA1080TS,118 be used in both linear and star FlexRay topologies?

Yes-the TJA1080TS,118 is explicitly designed for dual topology support. When TRXD0 and TRXD1 are grounded at power-on, it configures as a node transceiver for linear passive buses. When either TRXD0 or TRXD1 is tied to VBUF at power-on, it configures as a star transceiver branch. This hardware-strapped selection enables flexible network architecture without firmware changes, making the TJA1080TS,118 suitable for scalable FlexRay implementations across vehicle platforms.

What diagnostic capabilities does the TJA1080TS,118 provide?

The TJA1080TS,118 integrates comprehensive diagnostics: overtemperature detection, bus short-circuit monitoring, VBAT/VCC/VIO undervoltage flags, wake-source identification, and pin clamping detection (TXEN, BGE). Diagnostic status is reported via open-drain ERRN and RXEN outputs, with ERRN supporting serial readout of error registers. These features allow host microcontrollers to perform real-time health monitoring-critical for ISO 26262-compliant systems using the TJA1080TS,118.

Is the TJA1080TS,118 pin-compatible with other NXP FlexRay transceivers?

The TJA1080TS,118 shares the SSOP20 (SOT339-1) package and core pinout with the TJA1081TS,118, enabling drop-in replacement in many layouts. However, the TJA1081TS,118 adds enhanced wake-up filtering and extended VIO range (1.65–5.5 V). It is not pin-compatible with earlier devices like TJA1054 or TJA1041 CAN transceivers-those use different protocols, pin counts, and voltage domains. Always verify TRXD strap and diagnostic register mapping before substituting the TJA1080TS,118.