Infineon Technologies TLE7251VLEXUMA1

Overview

TLE7251VLEXUMA1 from Infineon is a high-speed CAN transceiver compliant with ISO 11898-2 and ISO 11898-5, serving as the physical-layer interface between CAN protocol controllers and differential HS CAN bus lines. It supports CAN FD data rates up to 2 MBit/s, features bus wake-up capability, VIO voltage adaptation (1.7–5.5 V), and operates across extended supply ranges (VCC: 4.5–27 V; VIO: 1.7–5.5 V) for automotive gateway and body control modules.

For engineers reviewing the TLE7251VLEXUMA1 datasheet, TLE7251VLEXUMA1 pinout, TLE7251VLEXUMA1 application, or TLE7251VLEXUMA1 equivalent, key selection criteria include guaranteed loop delay symmetry ≤255 ns, ±30 kV ESD robustness per IEC 61000-4-2, CANH/CANL short-circuit protection to ground/battery/VCC, low bus leakage current (<1 µA in power-down), and stand-by mode with remote wake-up indication on RxD.

Technical Context

The TLE7251VLEXUMA1 implements dual-receiver architecture: a normal-mode receiver active in normal operation and a low-power receiver enabled in stand-by mode to detect bus wake-up events. Its transmitter uses symmetric slew-rate control to minimize electromagnetic emission (EME) while maintaining strict loop delay matching (t_Loop(H,L)/t_Loop(L,H) ≤255 ns) required for CAN FD timing integrity.

It supports three operational states: normal mode (full TX/RX functionality), stand-by mode (VCC off, VIO powered, low-power receiver active), and forced stand-by (STB = low). Wake-up detection occurs via differential bus activity exceeding threshold (VDiff > 0.9 V dominant, < 0.5 V recessive), with wake-up indication asserted on RxD output.

Key Specifications

Pinout & Package

Package: PG-TSON-8 (leadless, RoHS-compliant, AOI-compatible); thermal pad must be connected to PCB ground plane for thermal management and EMI suppression.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TCAN1042DRBR and SN65HVD256DR, the TLE7251VLEXUMA1 uniquely combines CAN FD readiness (2 MBit/s), wide VIO adaptability (1.7–5.5 V), integrated wake-up signaling on RxD, and automotive-grade transient robustness-making it optimal for next-generation modular ECUs requiring flexible, low-power, and future-proof CAN connectivity.

Availability

TLE7251VLEXUMA1 is available at Aetrix Electronics and suitable for automotive gateway modules, body control units, and engine control units requiring stable component supply across extended temperature (−40 °C to +150 °C) and voltage (4.5–27 V) ranges.

Supply support for TLE7251VLEXUMA1 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 automotive, power management, and security ICs, with global manufacturing and qualification infrastructure aligned to AEC-Q100/101 standards.

The TLE7251VLEXUMA1 belongs to Infineon's automotive transceiver product line, engineered specifically for robust, low-power, and CAN FD–capable communication in harsh-vehicle environments-including start-stop, battery management, and ADAS subsystems.

FAQ

What is the purpose of the VIO pin on the TLE7251VLEXUMA1?

The VIO pin supplies the digital logic section (TxD, STB inputs and RxD output) and sets their voltage thresholds. It accepts 1.7–5.5 V, enabling direct interface with 1.8 V, 3.3 V, or 5 V microcontrollers without external level shifters. In stand-by mode, VIO remains powered to sustain the low-power receiver and wake-up detection logic.

How does the TLE7251VLEXUMA1 achieve bus wake-up without VCC power?

In stand-by mode, VCC is turned off while VIO remains active. The low-power receiver-powered solely by VIO-monitors CANH/CANL for differential activity exceeding 0.9 V. Upon detection, it asserts wake-up indication by pulling RxD low, signaling the MCU to re-enable VCC and transition to normal mode.

Is the TLE7251VLEXUMA1 compatible with both CAN FD and classical CAN 2.0 networks?

Yes. The device complies with ISO 11898-2 (classical CAN) and ISO 11898-5 (CAN FD physical layer). Its guaranteed loop delay symmetry ≤255 ns and optimized slew rates support error-free transmission at 2 MBit/s FD data phase, while remaining fully interoperable with legacy 125 kBit/s–1 MBit/s CAN 2.0 nodes on the same bus.

What protection features prevent damage during automotive transients?

The TLE7251VLEXUMA1 integrates protection against load dump (up to +40 V on CANH/CANL), reverse battery (−27 V common-mode), and ISO 7637-2 pulses. It also features internal short-circuit protection on CANH/CANL to GND, battery, and VCC, plus ±30 kV ESD robustness per IEC 61000-4-2-eliminating need for external TVS diodes in most implementations.