TJA1042T,112 Equivalent & Substitute Parts

Part Overview

The TJA1042T,112 is a half-duplex CAN transceiver manufactured by NXP USA Inc., designed for automotive-grade CANbus communication applications. This component operates as a 1/1 transceiver in an 8-SOIC surface mount package and meets AEC-Q100 automotive qualification standards.

The TJA1042T,112 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support long-term production requirements for systems utilizing this transceiver.

Substiute Parts

TJA1042T,112

NXP USA Inc.In Stock: 1120TJA1042T,112 Datasheet

Current PartRFQ

SN65HVDA1040AQDRQ1

Texas InstrumentsIn Stock: 69146SN65HVDA1040AQDRQ1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TJA1042T,112 is determined by the following critical parameters:

• Protocol Compatibility: Both parts must support CANbus communication
• Transceiver Configuration: 1/1 driver/receiver architecture with half-duplex operation
• Package Compatibility: 8-SOIC surface mount package with 0.154" width (3.90mm)
• Automotive Grade: AEC-Q100 qualification required
• Electrical Characteristics: Supply voltage range, operating temperature range, and data rate capability
• Compliance Standards: RoHS3 compliance and REACH unaffected status

The SN65HVDA1040AQDRQ1 from Texas Instruments meets these substitution criteria as an active, automotive-qualified CAN transceiver in the same 8-SOIC package format.

Parameter Comparison

Engineering Selection Recommendations

The SN65HVDA1040AQDRQ1 is a qualified substitute for the obsolete TJA1042T,112. Both components share identical package geometry, automotive qualification status, and core CAN transceiver functionality.

The substitute part is currently in active production status, ensuring long-term availability and supply chain stability. Both parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for automotive applications.

Differences in data rate specification (5 Mbps versus 1 Mbps) and operating temperature upper limit (150°C versus 125°C) should be evaluated against specific application requirements. The substitute part's narrower supply voltage range (4.75V – 5.25V versus 4.5V – 5.5V) requires verification against system power distribution specifications.

Frequently Asked Questions (FAQ)

Q: Can the SN65HVDA1040AQDRQ1 directly replace the TJA1042T,112 in existing designs?

A: Yes, both components use identical 8-SOIC package geometry and pinout. PCB layout modifications are not required. Electrical parameter differences must be evaluated against application specifications.

Q: What is the significance of the data rate difference between these parts?

A: The TJA1042T,112 supports 5 Mbps operation, while the SN65HVDA1040AQDRQ1 supports 1 Mbps. If the application requires data rates exceeding 1 Mbps, the substitute part may not be suitable. Verify actual CAN bus speed requirements in the system design.

Q: Are both parts suitable for the same temperature range applications?

A: The TJA1042T,112 operates to 150°C maximum, while the SN65HVDA1040AQDRQ1 operates to 125°C maximum. Applications requiring operation above 125°C require the original part or alternative solutions.

Q: Do both parts meet automotive qualification standards?

A: Yes, both the TJA1042T,112 and SN65HVDA1040AQDRQ1 carry AEC-Q100 automotive qualification and are ROHS3 compliant, meeting automotive regulatory requirements.

Q: What is the supply voltage compatibility between these parts?

A: The TJA1042T,112 accepts 4.5V – 5.5V, while the SN65HVDA1040AQDRQ1 accepts 4.75V – 5.25V. Verify that system power supply specifications fall within both ranges or confirm compatibility with the narrower range of the substitute part.