Infineon Technologies TLE6251DSXUMA2

Overview

TLE6251DSXUMA2 from Infineon Technologies is a high-speed CAN transceiver in PG-DSO-8 package, serving as the physical layer interface between CAN protocol controllers and differential bus lines per ISO/DIS 11898. It supports up to 1 Mbaud data rate, operates across 12 V and 24 V automotive systems, features bus wake-up capability via RxD level change in standby mode, and includes TxD time-out, overtemperature protection, and split termination for recessive-level stabilization - deployed in body control modules and powertrain gateways.

For engineers reviewing the TLE6251DSXUMA2 datasheet, TLE6251DSXUMA2 pinout, TLE6251DSXUMA2 application, or TLE6251DSXUMA2 equivalent, key selection considerations include wake-up sensitivity in mixed-power networks, passive bus behavior during STB-controlled standby, CANH/CANL short-circuit robustness to battery/ground/VCC, and compatibility with 3.3 V/5 V logic controllers in harsh automotive environments.

Technical Context

The TLE6251DSXUMA2 implements a dual-mode architecture (normal/standby) controlled by the STB pin, where standby mode disables driver/receiver stages while retaining wake-up detection via differential bus activity. Its Smart Power Technology SPT® integrates bipolar/CMOS control with DMOS power devices on a single die.

Wake-up signaling occurs through RxD level transitions synchronized to bus state changes, not edge-triggered interrupts; the split termination output stabilizes recessive common-mode voltage without external resistors, and the TxD time-out function disables transmission after >120 µs dominant state to prevent bus lockup.

Key Specifications

Pinout & Package

Package: PG-DSO-8 (plastic dual small outline, 8-pin, exposed pad, RoHS-compliant).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TJA1042T/3 and TJA1055T, the TLE6251DSXUMA2 uniquely combines bus-initiated wake-up, split termination, and AEC-Q100 Grade 1 qualification - making it optimal for cost-sensitive, thermally demanding, and partially powered automotive nodes where bus-level coordination is critical.

Availability

TLE6251DSXUMA2 is available at Aetrix Electronics and suitable for body control modules, powertrain gateways, ADAS sensor hubs, and EV battery management systems requiring stable component supply across automotive production lifecycles.

Supply support for TLE6251DSXUMA2 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 AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and security solutions, with global R&D and manufacturing infrastructure.

The TLE6251DSXUMA2 belongs to Infineon's automotive CAN transceiver product line, designed specifically for robust, low-power, and wake-up-capable HS-CAN communication in safety-critical vehicle networks.

FAQ

What is the purpose of the SPLIT pin on the TLE6251DSXUMA2?

The SPLIT pin outputs a reference voltage to drive the center tap of an external 60 Ω termination resistor, stabilizing the recessive common-mode voltage on the CAN bus. This eliminates the need for two separate 120 Ω terminators and improves signal integrity in long or noisy harnesses, especially in automotive applications where EMI immunity is critical.

How does wake-up work in standby mode?

In standby mode, the TLE6251DSXUMA2 disables its driver and receiver but keeps the wake-up detection circuit active. When bus activity occurs, the RxD pin changes level synchronously with the bus dominant/recessive state - this level transition serves as the wake-up flag for the connected MCU, requiring no additional wake-line hardware.

Is the TLE6251DSXUMA2 compatible with 3.3 V microcontrollers?

Yes - the TLE6251DSXUMA2's TxD input and RxD output are compatible with both 3.3 V and 5 V logic levels. The TxD pin has a 20 kΩ internal pull-up, and RxD drives standard CMOS-compatible levels, allowing direct interfacing with modern low-voltage MCUs without level-shifting circuitry.

What happens during overtemperature shutdown?

When junction temperature exceeds ~175 °C, the driver stages deactivate to protect the device. Transmission resumes only after the TxD input transitions from dominant to recessive - this prevents bit errors that could occur if the driver re-enabled mid-bit. The receiver remains functional to detect wake-up signals during thermal recovery.