Infineon Technologies TLT9252VLCXUMA1

Overview

TLT9252VLCXUMA1 from Infineon Technologies is a high-speed CAN FD transceiver compliant with ISO 11898-2:2016 and SAE J2284-4/-5, designed as the physical layer interface between microcontrollers and HS CAN buses in automotive systems. It supports data rates up to 5 MBit/s, features dual power supply (VBAT/VCC), achieves ≤25 µA sleep current, and includes autonomous bus biasing, WUP/LWU wake-up, and fail-safe functions including TxD time-out and overtemperature shutdown.

For engineers reviewing the TLT9252VLCXUMA1 datasheet, TLT9252VLCXUMA1 pinout, TLT9252VLCXUMA1 application, or TLT9252VLCXUMA1 equivalent, key selection criteria include guaranteed loop delay symmetry for CAN FD timing integrity, ±10 kV HBM ESD robustness, AEC-Q100 Grade 0 qualification (-40°C to +150°C), INH/NERR diagnostic signaling, and chokeless EME performance enabling simplified PCB layout.

Technical Context

The TLT9252VLCXUMA1 implements a fully differential transmitter/receiver architecture with matched propagation paths to ensure <1 ns loop delay asymmetry-critical for reliable CAN FD arbitration and data phase sampling at 5 MBit/s. Its dual-supply design isolates VBAT-sensitive wake-up circuitry from VCC-regulated logic, enabling stable operation during battery cranking events down to 3.0 V.

Wake-up functionality integrates both bus-level pattern detection (WUP) with programmable filter window (0.5–1.8 µs) and local edge-triggered input (WAKE pin), while NERR provides combined fault reporting for undervoltage (VBAT/VCC/VIO), overtemperature, short-circuit, and RxD recessive clamping events-enabling deterministic failure diagnosis without host polling.

Key Specifications

Pinout & Package

TLT9252VLCXUMA1 is housed in a RoHS-compliant PG-TSON-14 package (3.0 mm × 4.4 mm, 0.65 mm pitch), optimized for thermal dissipation and automated assembly in automotive modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TCAN1042VDQ1 and SN65HVD256DR, the TLT9252VLCXUMA1 uniquely delivers 5 MBit/s CAN FD operation with dual-supply fault resilience, Grade 0 thermal range, and integrated NERR-based diagnostics-making it the only option qualified for next-generation powertrain and ADAS domain controllers requiring deterministic wake-up and fail-safe behavior.

Availability

TLT9252VLCXUMA1 is available at Aetrix Electronics and suitable for automotive powertrain control, radar sensor interfacing, instrument cluster networking, and HVAC module communication requiring stable component supply across extended temperature and lifetime profiles.

Supply support for TLT9252VLCXUMA1 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 global manufacturing and automotive qualification infrastructure.

The TLT9252VLCXUMA1 belongs to Infineon's automotive transceiver product line, engineered specifically for high-reliability CAN FD communication in engine, transmission, ADAS, and body control units operating under extreme thermal and electrical stress.

FAQ

What is the maximum CAN FD data rate supported by TLT9252VLCXUMA1?

The TLT9252VLCXUMA1 supports CAN FD data rates up to 5 MBit/s, validated with guaranteed loop delay symmetry (<1 ns) to maintain signal integrity and timing margin for both arbitration and data phases. This capability is explicitly confirmed in the datasheet's functional description and timing parameter tables, and is essential for high-throughput applications like radar data streaming and OTA updates.

Does TLT9252VLCXUMA1 require an external common-mode choke?

No, the TLT9252VLCXUMA1 is certified for chokeless operation due to its very low electromagnetic emission (EME) profile, achieved through matched differential driver symmetry and integrated bus biasing. This eliminates the need for external common-mode chokes in most automotive layouts, reducing BOM cost and PCB area-confirmed in the datasheet's EME characterization and application example sections.

How does the dual-supply architecture (VBAT and VCC) improve system reliability?

The VBAT supply independently powers wake-up comparators and bias circuits, while VCC powers the transceiver core. During battery cranking events where VCC may dip below 4.5 V, the device remains capable of detecting bus wake-up patterns and asserting NERR for fault reporting-ensuring uninterrupted network supervision even under 3.0 V battery conditions, as specified in the functional range and dual supply solution sections.

What fault conditions does the NERR pin indicate?

The NERR pin is an active-low open-drain output that signals five distinct fault conditions: undervoltage on VBAT, VCC, or VIO; overtemperature shutdown; CANH/CANL short-circuit to ground, battery, or VCC; and RxD recessive clamping. Each condition is latched and reported simultaneously, enabling hardware-level fault prioritization without MCU intervention-detailed in Section 7 (Fail safe functions) and Table 1 of the datasheet.