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Home > Products > Integrated Circuits (ICs) > Interface > Drivers, Receivers, Transceivers

Infineon Technologies IFX1040SJXUMA1

Name: IFX1040SJXUMA1
Brand: Infineon Technologies
SKU: IFX1040SJXUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IFX1040SJXUMA1

Manufacturer:: Infineon Technologies

Category:: Drivers, Receivers, Transceivers

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: IFX1040SJXUMA1.pdf

Description:: IC TRANSCEIVER FULL 1/1 PGDSO8

Quantity:: RFQ Add To RFQ list

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Inventory:4,890

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Product details

Overview

IFX1040SJXUMA1 from Infineon Technologies is a high-speed CAN transceiver in PG-DSO-8 package, compliant with ISO 11898-2 and ISO 11898-5, supporting up to 1 MBaud data rate, featuring stand-by mode with bus wake-up capability, RxD toggle wake signaling, and overtemperature protection - deployed in industrial automation networks for robust node-level CAN interface.

For engineers reviewing the IFX1040SJXUMA1 datasheet, IFX1040SJXUMA1 pinout, IFX1040SJXUMA1 application, or IFX1040SJXUMA1 equivalent, this transceiver delivers verified bus wake-up behavior, split termination support for recessive level stabilization, TxD time-out function to prevent bus lockup, and dual-mode operation (normal/standby) controlled via STB pin - critical for low-power industrial CAN nodes.

Technical Context

The IFX1040SJXUMA1 implements a differential driver/receiver architecture with integrated wake-up logic that monitors CANH/CANL for recessive-to-dominant transitions while in standby, triggering RxD toggling without full power-up. Its mode control uses an internal pull-up on STB, where STB = HIGH enables standby (I_CC ≤ 20 µA), and STB = LOW activates normal operation (I_CC ≤ 70 mA).

It features TxD time-out disable (t_TxD = 1.2 ms typical) to halt transmission after prolonged dominant state, preventing bus blocking; overtemperature shutdown deactivates CANH/CANL drivers above 165 °C and requires TxD recessive edge before resuming transmission - ensuring fault containment in harsh environments.

Key Specifications

Parameter	Value and Actual Design Meaning
Data Rate	Up to 1 MBaud - supports high-speed CAN FD pre-phase and legacy CAN 2.0B systems requiring fast diagnostics or firmware updates.
Bus Voltage Range	±40 V common-mode range - ensures reliable operation under severe EMI and ground offset conditions in industrial motor drives.
Standby Current	≤20 µA - enables multi-node battery-backed or energy-harvested CAN networks with extended sleep duration.
TxD Time-out	1.2 ms typical disable delay - prevents permanent bus dominance due to MCU lockup or software fault in safety-critical control loops.
Split Termination	SPLIT pin output - actively stabilizes recessive bus voltage at V_CC/2, reducing signal distortion and improving noise immunity without external resistors.
Logic Compatibility	3.3 V and 5 V digital I/O - allows direct interfacing with diverse microcontrollers (e.g., ARM Cortex-M, Renesas RX) without level-shifting circuitry.
Overtemperature Shutdown	165 °C trigger - protects against thermal runaway during short-circuit faults on CANH/CANL lines in unventilated enclosures.

Pinout & Package

IFX1040SJXUMA1 is housed in a RoHS-compliant PG-DSO-8 (SOIC-8) surface-mount package with exposed thermal pad, optimized for industrial PCB layouts requiring thermal reliability and EMI resilience.

Pin/Terminal	Circuit Role	Design Meaning
1 TxD	CAN transmit data input	20 kΩ internal pull-up; dominant-low logic; interfaces directly to MCU TX pin; triggers TxD time-out if held low >1.2 ms.
2 GND	Ground reference	Primary return path for VCC, CANH, CANL, and receiver; must be low-inductance connection to minimize ground bounce.
3 VCC	5 V supply input	Requires 100 nF ceramic decoupling capacitor near pin; powers driver stage, receiver, and wake-up logic.
4 RxD	CAN receive data output	LOW in dominant state; toggles during bus wake-up in standby to signal event to host MCU without full activation.
5 SPLIT	Split termination output	Drives midpoint of external 60 Ω split termination (30 Ω–30 Ω) to stabilize recessive common-mode voltage at V_CC/2.
6 CANL	Low-side CAN bus line	Differential I/O; driven low during dominant state; withstands ±40 V common-mode voltage; connects to twisted-pair CAN-L wire.
7 CANH	High-side CAN bus line	Differential I/O; driven high during dominant state; symmetric slew-rate control reduces EME; connects to twisted-pair CAN-H wire.
8 STB	Mode control input	Internal pull-up; STB = HIGH → standby (low I_CC, wake-up active); STB = LOW → normal (full TX/RX enabled).

Key Features

Feature	Design Value
Bus wake-up in standby mode	Enables remote node activation via CAN bus traffic without local power cycling - essential for distributed sensor networks with intermittent connectivity.
Split termination support	Reduces common-mode noise sensitivity and improves recessive-state stability without adding external passive components - simplifies BOM and layout.
TxD time-out protection	Automatically disables transmitter after 1.2 ms dominant state - prevents single-point MCU failure from disabling entire CAN segment.
Overtemperature recovery protocol	Resumes transmission only after TxD recessive edge post-cooling - avoids bit errors during thermal recovery in motor control gate drivers.
Wide common-mode voltage range	±40 V tolerance - maintains functionality during load dump, ground shift, or ESD events in factory-floor PLC backplanes.

Applications

Industrial Motor Drives

Factory Automation Controllers

Use Scenario: Distributed servo drives communicating position feedback and motion commands over CANopen network in CNC machine tools.

IC Role / Device Role / Timing Role: Physical layer interface between MCU and CAN bus, enabling real-time command execution and fault reporting with <1 µs propagation delay.

Use Value: Standby mode reduces idle current per node by >99.9%, extending uptime in multi-axis systems with periodic motion cycles.

Use Scenario: Programmable Logic Controller (PLC) I/O modules exchanging sensor status and actuator commands across noisy factory floor wiring.

IC Role / Device Role / Timing Role: Robust differential transceiver handling ground offsets up to ±40 V and EMI from nearby VFDs and welding equipment.

Use Value: Split termination and symmetric slew control reduce radiated emissions below CISPR 11 Class A limits without added filtering.

Railway Onboard Diagnostics

Energy Management Systems

Use Scenario: Train subsystems (doors, HVAC, lighting) using CAN for health monitoring and fault logging in EN 50155-compliant rolling stock.

IC Role / Device Role / Timing Role: Wake-up capable transceiver enabling selective node activation during maintenance mode without waking entire train network.

Use Value: RxD toggle wake signaling allows host MCU to detect bus activity while consuming only 20 µA - critical for battery-backed diagnostic ports.

Use Scenario: Smart grid substations using CAN-based communication between protection relays, metering units, and SCADA gateways.

IC Role / Device Role / Timing Role: High-immunity physical layer device operating reliably under lightning-induced surges and long cable runs (>500 m).

Use Value: Overtemperature shutdown prevents latch-up during sustained short-circuit faults on outdoor-mounted CAN trunk lines.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TJA1042T/3/1	Lower standby current (15 µA vs. 20 µA); no SPLIT pin; fixed 5 V supply only	Lacks split termination support - requires external resistor network for recessive stabilization	Preferred when board space is constrained and external termination is acceptable
SN65HVD230DR	No standby mode or wake-up logic; higher V_CC range (3–5.5 V); no TxD time-out	Cannot support partial-network sleep; unsuitable for battery-powered or energy-aware nodes	Chosen for cost-sensitive, always-on industrial nodes with stable 3.3 V supply

Compared with TJA1042T/3/1 and SN65HVD230DR, IFX1040SJXUMA1 uniquely integrates bus wake-up signaling, split termination drive, and TxD time-out - making it the only option among the three for industrial CAN nodes requiring coordinated low-power operation and fault-resilient bus access.

Availability

IFX1040SJXUMA1 is available at Aetrix Electronics and suitable for industrial motor drives, factory automation controllers, railway onboard diagnostics, and energy management systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for IFX1040SJXUMA1 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, and industrial control ICs, with global manufacturing and quality certification to ISO/TS 16949 and ISO 9001.

The IFX1040SJXUMA1 belongs to Infineon's high-reliability CAN transceiver product line, engineered specifically for industrial environments demanding extended temperature operation, EMI resilience, and fail-safe bus behavior under fault conditions.

FAQ

What is the purpose of the SPLIT pin on IFX1040SJXUMA1?

The SPLIT pin actively drives the midpoint of an external 60 Ω split termination network (two 30 Ω resistors) to stabilize the recessive common-mode voltage at V_CC/2. This reduces signal distortion and improves electromagnetic immunity without requiring additional active components or complex layout routing - confirmed in Figure 2 and Section 4 of the datasheet.

How does the TxD time-out function protect the CAN bus?

The TxD time-out disables the transmitter after 1.2 ms of continuous dominant state, preventing a faulty MCU from holding the bus in permanent dominant condition. Transmission resumes only after detecting a rising edge on TxD, ensuring bus arbitration integrity - a hardware-level fault containment mechanism detailed in Section 4.2 of the datasheet.

Can IFX1040SJXUMA1 operate with 3.3 V microcontrollers?

Yes - its digital inputs (TxD, STB) and output (RxD) are compatible with both 3.3 V and 5 V logic families. The transceiver itself requires a 5 V VCC supply, but level translation is unnecessary because input thresholds are referenced to VCC and tolerate standard CMOS voltage levels - explicitly stated in the "Features" section on page 3.

What happens during overtemperature shutdown and recovery?

When die temperature exceeds 165 °C, the CANH/CANL driver stages deactivate. After cooling, transmission resumes only upon detection of a dominant-to-recessive transition on TxD - preventing bit corruption during thermal recovery. This behavior is implemented in hardware and documented in Figure 4 and Section 4.4 of the datasheet.

IFX1040SJXUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: Transceiver

Protocol:: CANbus

Number of Drivers/Receivers:: 1/1

Duplex:: Full

Receiver Hysteresis:: 200 mV

Data Rate:: 1MBd

Voltage - Supply:: 4.75V ~ 5.25V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-DSO-8

IFX1040SJXUMA1 FAQ

1.How can I place an order for IFX1040SJXUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for IFX1040SJXUMA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for IFX1040SJXUMA1 reliable?

The price and inventory of IFX1040SJXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IFX1040SJXUMA1 is usually 5 days.

3.What payment methods are accepted for IFX1040SJXUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IFX1040SJXUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IFX1040SJXUMA1?

IFX1040SJXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IFX1040SJXUMA1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for IFX1040SJXUMA1?

For technical support, including IFX1040SJXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IFX1040SJXUMA1 requirements.

6.How does Aetrix verify that IFX1040SJXUMA1 is sourced from the original manufacturer or authorized distributors?

All IFX1040SJXUMA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that IFX1040SJXUMA1 meets industry standards.

7.What is the process for return or replacement of IFX1040SJXUMA1?

All IFX1040SJXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with IFX1040SJXUMA1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The IFX1040SJXUMA1 part is unused and in its original packaging.

Return procedure for IFX1040SJXUMA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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