Infineon Technologies IFX1050GXUMA1

Overview

IFX1050GXUMA1 from Infineon Technologies is a high-speed CAN transceiver compliant with ISO 11898-2, serving as the physical layer interface between CAN protocol controllers and differential bus lines. It supports data rates from 1 kBaud to 1 MBaud, operates across –40 °C to +125 °C, features integrated pull-ups on TxD, RM, and INH pins, and provides thermal shutdown protection at 160 °C - deployed in industrial motor control and factory automation networks.

For engineers reviewing the IFX1050GXUMA1 datasheet, IFX1050GXUMA1 pinout, IFX1050GXUMA1 application, or IFX1050GXUMA1 equivalent, key selection criteria include its three-mode operation (Normal/Receive-Only/Standby), ±40 V bus fault tolerance, 6–10 mA recessive-state supply current, and PG-DSO-8 package compatibility with industrial PCB layouts.

Technical Context

The IFX1050GXUMA1 implements a bipolar-CMOS-DMOS Smart Power Technology (SPT®) process, enabling robust driver stage integration with logic-level control circuitry on a single die. Its receiver uses differential input detection with hysteresis, while transmitter output stages are short-circuit protected and rated for ±40 V bus voltage tolerance.

Mode control is implemented via two dedicated logic inputs: INH (inhibit) and RM (receive-only mode), with internal 10–50 kΩ pull-up resistors. The device enters Standby Mode when INH = HIGH (ICC,stb ≤ 10 µA), Normal Mode when INH = LOW & RM = HIGH, and Receive-Only Mode when both INH = LOW & RM = LOW - enabling deterministic bus diagnostics and power management.

Key Specifications

Pinout & Package

IFX1050GXUMA1 is housed in a PG-DSO-8 (SOIC-8) package with exposed thermal pad, RoHS-compliant, and marked "IFX1050G" on top surface. Pin 1 is located at the top-left corner adjacent to the notch or dot marking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TJA1042T/3/1 and SN65HVD230DR, IFX1050GXUMA1 uniquely combines Receive-Only Mode for field diagnostics, ±40 V bus fault tolerance, and 125 °C operation - making it optimal for industrial deployments demanding operational visibility and environmental resilience without design compromises.

Availability

IFX1050GXUMA1 is available at Aetrix Electronics and suitable for industrial motor drives, factory automation PLCs, building management systems, and renewable energy inverters requiring stable component supply across extended product lifecycles.

Supply support for IFX1050GXUMA1 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 industrial control solutions, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949 standards.

The IFX1050GXUMA1 belongs to Infineon's high-reliability CAN transceiver product line, engineered specifically for harsh industrial environments where EMC robustness, thermal stability, and bus fault resilience are non-negotiable design requirements.

FAQ

What is the maximum bus length supported by IFX1050GXUMA1 at 1 MBaud?

At 1 MBaud, IFX1050GXUMA1 supports up to 40 meters of properly terminated twisted-pair cable per ISO 11898-2 specifications. This assumes characteristic impedance of 120 Ω, stub lengths <0.3 m, and termination resistors at both ends. Longer distances require reduced bit rates - e.g., 500 kBaud supports ~100 m, and 125 kBaud supports ~500 m - verified in application note AN2012-07.

Can IFX1050GXUMA1 operate with a 3.3 V controller interface?

Yes - TxD and RxD are 5 V-tolerant and CMOS-compatible. A 3.3 V controller can drive TxD directly (VTD,L max = 0.4×VCC = 2.2 V at VCC = 5.5 V), and RxD's open-drain output with internal pull-up interfaces cleanly to 3.3 V logic via an external 3.3 V pull-up if needed. No level shifter is required for basic operation.

How does the Receive-Only Mode prevent bus blocking?

In Receive-Only Mode (INH = LOW, RM = LOW), the transmitter stage is fully disabled - meaning TxD input is ignored and CANH/CANL outputs enter high-impedance state. This eliminates risk of a stuck-dominant controller output forcing the entire bus into permanent recessive failure, allowing other nodes to communicate normally while diagnostics are performed.

Is thermal pad soldering required for reliable operation at 125 °C?

Yes - the PG-DSO-8 package includes an exposed thermal pad that must be soldered to a minimum 100 mm² copper pour connected to GND. Without this, junction temperature rise exceeds specification limits under full-load conditions. Thermal resistance drops from 185 K/W (no pad) to ~60 K/W with proper pad layout, ensuring safe operation at maximum ambient and current load.