Infineon Technologies IFX1051LEXUMA1

Overview

IFX1051LEXUMA1 from Infineon Technologies is an industrial-grade High-Speed CAN-FD transceiver compliant with ISO 11898-2, serving as the physical-layer interface between CAN protocol controllers and differential HS CAN bus. It supports data rates up to 2 MBit/s, features VIO voltage adaptation for 3.3 V microcontrollers, and includes TxD time-out (≥4.5 ms), receive-only mode, and ±10 kV HBM ESD robustness - deployed in factory automation sensors and elevator control systems.

For engineers reviewing the IFX1051LEXUMA1 datasheet, IFX1051LEXUMA1 pinout, IFX1051LEXUMA1 application, or IFX1051LEXUMA1 equivalent, key selection criteria include CAN FD timing symmetry, bus short-circuit protection (to ground/battery/VCC), low EME/EMI performance, and dual-package availability (PG-TSON-8 and PG-DSO-8) for layout flexibility in space-constrained industrial nodes.

Technical Context

The IFX1051LEXUMA1 implements a fully differential transmitter and receiver pair with matched loop delay symmetry (t_Loop ≤ 255 ns), enabling reliable CAN FD frame transmission at 2 MBit/s. Its dominant/recessive detection thresholds are fixed at V_Diff ≥ 0.9 V (dominant) and ≤ 0.5 V (recessive), with output swing referenced to VCC and logic levels referenced to VIO.

It operates in two defined modes: Normal mode (TxD active, RM = high) and Receive-only mode (RM = low), where transmitter is disabled but receiver remains functional. The device integrates overtemperature protection, undervoltage lockout on both VCC and VIO, and bus biasing via external termination - no internal bias resistors.

Key Specifications

Pinout & Package

IFX1051LEXUMA1 is packaged in RoHS-compliant, halogen-free PG-TSON-8 (exposed pad) - optimized for thermal dissipation and AOI-compatible solder joints in high-density industrial PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TCAN1042DR and MCP2562FD-H/SN, the IFX1051LEXUMA1 uniquely combines 10–27 V VCC operation, independent VIO adaptation, ≥4.5 ms hardware TxD timeout, and ±10 kV HBM - making it the only option qualified for mixed-voltage, long-cable, high-EMI industrial CAN FD networks without supplemental components.

Availability

IFX1051LEXUMA1 is available at Aetrix Electronics and suitable for factory automation sensors, HVAC control nodes, traffic light controllers, and wind turbine pitch systems requiring stable component supply across extended product lifecycles.

Supply support for IFX1051LEXUMA1 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 leader specializing in power management, automotive, and industrial control ICs, with ISO 9001 and IATF 16949-certified manufacturing.

The IFX1051 belongs to Infineon's industrial CAN transceiver product line, engineered specifically for electromagnetic harshness, supply flexibility, and fail-safe operation in non-automotive factory and infrastructure applications.

FAQ

What is the function of the RM pin, and how does it affect bus arbitration?

The RM (Receive-only Mode) pin disables the transmitter when pulled low, allowing the device to monitor bus traffic without driving CANH/CANL. Since the transmitter is fully inactive, it introduces zero bus loading or arbitration interference - ideal for diagnostic sniffing or safety-critical monitoring where silent observation is required.

Does IFX1051LEXUMA1 require external bus termination resistors?

Yes - the IFX1051LEXUMA1 has no internal termination. A single 120 Ω resistor must be placed across CANH and CANL at each bus end. This matches the characteristic impedance of standard twisted-pair CAN cabling and prevents signal reflections that degrade timing margins at 2 MBit/s.

Can VIO and VCC be powered from the same supply rail?

No - VIO (2.7–5.5 V) and VCC (10–27 V) must be independently sourced. VIO powers logic interfaces (TxD, RxD, RM), while VCC powers the bus driver stage. Sharing rails risks violating absolute maximum ratings and disabling VIO-level adaptation - a core feature for mixed-voltage MCU interfacing.

How does the TxD time-out function interact with CAN FD bit timing?

The TxD time-out is a hardware watchdog independent of protocol timing. It triggers only after ≥4.5 ms of continuous TxD low - far exceeding even the longest CAN FD recessive delimiter (≈1.2 µs at 2 MBit/s). Thus, it never interferes with valid frames but reliably recovers from MCU lockups that would otherwise stall the entire bus.