TCAN1042VDRQ1 Automotive CAN FD Transceiver: The Definitive Guide for Engineers and Buyers

Quick Answers: What Is the TCAN1042VDRQ1 and Why Does It Matter?

The TCAN1042VDRQ1 is an automotive-grade CAN FD transceiver from Texas Instruments, designed to interface a CAN protocol controller with the physical two-wire CAN bus. It supports data rates up to 5 Mbps (CAN FD), operates from a 4.5V to 5.5V supply, and features I/O level shifting via a VIO pin for direct connection to 3.3V or 5V logic. The device is AEC-Q100 qualified, operates over -55°C to 125°C, and comes in an 8-pin SOIC package. As of 2026-08-27, the TCAN1042VDRQ1 is in stock with 99,999 units available at XAIPART, priced at $0.358 per unit for quantities of 1000 or more. This guide provides engineers and procurement professionals with everything needed to select, design in, and source this critical component.

Technical Guide: How to Select, Design In, and Use the TCAN1042VDRQ1

Understanding the TCAN1042VDRQ1

The TCAN1042VDRQ1 is a single-channel CAN transceiver supporting both classical CAN 2.0 and CAN FD protocols. It converts digital signals from the CAN controller into differential signals on the CANH and CANL bus lines, and vice versa. Key verified specifications include:

• Data Rate: 5 Mbps (CAN FD)
• Supply Voltage: 4.5V to 5.5V
• I/O Level Shifting: VIO pin supports 3.3V or 5V logic
• Operating Temperature: -55°C to 125°C
• Package: SOIC-8 (D)
• Fault Protection: Short-circuit, overvoltage, thermal shutdown
• Silent Mode: Yes (via STB pin)
• AEC-Q100 Qualified

Pinout and Functional Description

The TCAN1042VDRQ1 is available in an 8-pin SOIC package. The pin functions are verified from the XAIPART database:

For a complete pinout diagram, refer to the product page.

Design Considerations

When designing with the TCAN1042VDRQ1, follow these guidelines:

• Power Supply: Connect VCC to a 5V supply (4.5V to 5.5V range). Decouple with a 100nF capacitor close to the VCC pin.
• I/O Level Shifting: Connect VIO to the microcontroller's logic supply (3.3V or 5V) to match the logic levels of TXD and RXD.
• Bus Termination: Terminate the CAN bus with 120Ω resistors at both ends to minimize reflections.
• Silent Mode: Drive STB high to enter standby mode, disabling the transmitter while keeping the receiver active.
• Fault Protection: The device protects against short circuits on CANH/CANL to battery or ground, overvoltage, and thermal shutdown.

Application Example: Automotive Body Control Module

In a body control module (BCM), the TCAN1042VDRQ1 interfaces a 3.3V microcontroller with the vehicle's CAN bus. The VIO pin connects to the 3.3V rail, eliminating external level shifters. The device's AEC-Q100 qualification and wide temperature range ensure reliable operation under hood. Fault protection on the bus pins guards against wiring faults.

Alternatives & Comparison: Drop-In Replacements for TCAN1042VDRQ1

When sourcing the TCAN1042VDRQ1, engineers often consider drop-in alternatives. The following table compares the TCAN1042VDRQ1 with verified alternatives from the XAIPART database.

Summary: The TCAN1042VDQ1 is electrically identical to the TCAN1042VDRQ1, differing only in packaging (tube vs. tape-and-reel). The TCAN1042HVDQ1 offers enhanced fault protection. The TCAN1042HGVDRQ1 supports 5 Mbps CAN FD with similar pinout. The TCAN1051VDRBTQ1 has a lower data rate (2 Mbps) and lacks I/O level shifting, making it less suitable for 3.3V logic interfaces.

Industry Insight: Market Position, Lifecycle, and Supply Situation

The TCAN1042VDRQ1 is an active product from Texas Instruments, indicating ongoing production and availability. As of 2026-08-27, XAIPART holds 99,999 units in stock, with a minimum order quantity of 1. Pricing tiers are as follows:

The automotive CAN transceiver market is competitive, with TI and NXP as major players. The TCAN1042VDRQ1's AEC-Q100 qualification and CAN FD support position it well for modern automotive networks. [DATA_NEEDED: market share data]

Trends & Outlook: What Buyers Should Watch

As vehicles become more software-defined, the demand for higher bandwidth in-vehicle networks grows. The TCAN1042VDRQ1's support for CAN FD up to 5 Mbps addresses this need. Buyers should monitor the following trends:

• CAN FD Adoption: The shift from classical CAN to CAN FD is accelerating, making the TCAN1042VDRQ1 a future-proof choice.
• I/O Level Shifting: With more microcontrollers operating at 3.3V, the VIO pin simplifies design and reduces BOM cost.
• Supply Chain: The active lifecycle status and substantial stock at XAIPART indicate stable availability. However, automotive-grade components can experience allocation; consider securing long-term supply.
• Alternative Packaging: The tape-and-reel option (VDRQ1) supports automated assembly, which is critical for high-volume production.

For the latest pricing and availability, visit the TCAN1042VDRQ1 product page.