Infineon Technologies TLE9351SJXTMA1

Overview

TLE9351SJXTMA1 from Infineon is a high-speed CAN FD transceiver compliant with ISO 11898-2:2016 and SAE J2284-4/-5, supporting data rates up to 5 MBit/s with loop delay symmetry optimized for CAN FD frames. It features bus wake-up pattern (WUP) detection, stand-by mode with <10 µA quiescent current on VCC, and overtemperature protection. Used in automotive HS CAN networks for ECU, gateway, and BCM applications.

For engineers reviewing the TLE9351SJXTMA1 datasheet, TLE9351SJXTMA1 pinout, TLE9351SJXTMA1 application, or TLE9351SJXTMA1 equivalent, key selection criteria include CAN FD timing symmetry, VeLIO certification, ESD robustness (±10 kV HBM on CANH/CANL), low EME enabling choke-free layout, and AEC-Q100 qualification for automotive deployment.

Technical Context

The TLE9351SJXTMA1 implements a dual-receiver architecture-normal-mode and low-power receiver-with wake-up logic and filter circuitry enabling reliable WUP detection across global OEM requirements. Its transmitter delivers matched CANH/CANL edge symmetry and delay symmetry, critical for maintaining signal integrity at 5 MBit/s.

Fail-safe functions include TxD time-out, short-circuit protection, VCC undervoltage lockout, and thermal shutdown at 170–190 °C with 5–20 K hysteresis. Bus biasing is internal; no external termination resistors required on the transceiver side.

Key Specifications

Pinout & Package

Package: PG-DSO-8 (RoHS-compliant, halogen-free, 8-pin exposed pad SOIC variant).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed CAN FD transceiver applications.

Compared with TJA1145 and TLE6250G, the TLE9351SJXTMA1 uniquely balances CAN FD speed, ultra-low stand-by current, VeLIO compliance, and choke-free EME - making it optimal for next-gen automotive domain controllers requiring both performance and power efficiency.

Availability

TLE9351SJXTMA1 is available at Aetrix Electronics and suitable for engine control units, automotive gateway modules, and body control modules requiring stable component supply, AEC-Q100 assurance, and long-term automotive lifecycle support.

Supply support for TLE9351SJXTMA1 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and security solutions, with leadership in automotive-grade analog and mixed-signal devices.

The TLE9351SJXTMA1 belongs to Infineon's TLE automotive transceiver family, designed specifically for robust, high-speed CAN FD communication in safety-critical vehicle networks demanding low EME, high ESD immunity, and seamless OEM interoperability.

FAQ

Is the TLE9351SJXTMA1 compatible with classic CAN 2.0B networks?

Yes, the TLE9351SJXTMA1 is backward-compatible with ISO 11898-2:2003 (classic CAN) and supports data rates up to 1 MBit/s in legacy mode. Its receiver sensitivity and dominant/recessive threshold levels meet both CAN 2.0B and CAN FD specifications, allowing seamless integration into mixed-speed networks without hardware changes.

What is the recommended PCB layout practice for minimizing EME?

Place the 1 µF VCC decoupling capacitor within 2 mm of pins 2 (GND) and 3 (VCC), use symmetric trace lengths for CANH and CANL (≤100 µm length mismatch), route differential pairs over solid ground plane, and avoid stubs or vias in the bus path. The device's inherent symmetry eliminates need for external common-mode chokes in most layouts.

Does the STB pin require an external pull-up resistor?

No - the STB pin has an internal pull-up to VCC. Driving STB low (≤0.8 V) activates normal operation; leaving it open or pulling high places the device in stand-by mode. External pull-up is unnecessary and may interfere with controlled mode transitions during power sequencing.

How does the TxD time-out function behave during MCU reset?

When TxD is held dominant (>120 µs) due to MCU reset or firmware stall, the internal timer disables the transmitter output, forcing CANH/CANL into recessive state. This prevents bus arbitration failure and allows other nodes to regain control - recovery occurs automatically upon valid TxD edge transition after timeout.