ISO1042DWR CAN Bus Transceiver Equivalent & Substitute Parts

Part Overview

The ISO1042DWR is a full-duplex CAN bus transceiver manufactured by Texas Instruments, designed for automotive and industrial applications requiring reliable high-speed communication over CANbus protocol. This 16-SOIC surface mount device operates across dual voltage ranges (1.71V–1.89V and 2.25V–5.5V) and supports data rates up to 5 Mbps with 120 mV receiver hysteresis. The part is currently in active production status with ROHS3 compliance and AEC-Q100 qualification available in automotive-grade variants. Substitute parts are identified when inventory constraints, lead time requirements, or application-specific certifications necessitate alternative sourcing while maintaining electrical and mechanical compatibility.

Substiute Parts

ISO1042DWR

Texas InstrumentsIn Stock: 8151ISO1042DWR Datasheet

Current PartRFQ

ISO1042BQDWRQ1

Texas InstrumentsIn Stock: 2016ISO1042BQDWRQ1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ISO1042DWR is determined by strict equivalence across the following critical parameters:

• Protocol Compatibility: CANbus full-duplex transceiver architecture
• Electrical Performance: 1/1 driver/receiver configuration, 5 Mbps data rate, 120 mV receiver hysteresis
• Voltage Specifications: Dual supply voltage ranges (1.71V–1.89V and 2.25V–5.5V)
• Thermal Range: -40°C to 125°C operating temperature
• Package Specification: 16-SOIC form factor with 0.295" (7.50mm) width
• Compliance: ROHS3 compliance and MSL 3 rating

The ISO1042BQDWRQ1 qualifies as a parametric equivalent substitute based on identical electrical specifications and package configuration. The primary distinction is the addition of automotive-grade qualification (AEC-Q100) in the substitute part, which represents an enhancement rather than a deviation from the base specification.

Parameter Comparison

Engineering Selection Recommendations

Both ISO1042DWR and ISO1042BQDWRQ1 are active production parts from Texas Instruments with identical electrical and mechanical specifications. Selection between these parts should be based on application requirements:

ISO1042DWR is suitable for general industrial and consumer applications where standard-grade components meet design specifications and cost optimization is a priority.

ISO1042BQDWRQ1 is required for automotive applications or systems subject to AEC-Q100 qualification mandates. The automotive-grade variant provides additional process controls and reliability assurance aligned with automotive industry standards.

Both parts maintain ROHS3 compliance, identical thermal operating ranges, and equivalent CANbus transceiver performance. Pin-to-pin compatibility and functional equivalence are guaranteed across both variants.

Frequently Asked Questions (FAQ)

Q: Are ISO1042DWR and ISO1042BQDWRQ1 pin-compatible?

A: Yes. Both parts use the 16-SOIC package with identical pinout and electrical characteristics. Direct substitution is possible without PCB redesign.

Q: What is the primary difference between these two parts?

A: The ISO1042BQDWRQ1 includes AEC-Q100 automotive qualification, while the ISO1042DWR is standard-grade. All electrical and mechanical specifications are identical.

Q: Can I use ISO1042DWR in an automotive application?

A: ISO1042DWR can be used in automotive applications if your design does not require AEC-Q100 certification. For designs requiring automotive-grade qualification, ISO1042BQDWRQ1 is the appropriate selection.

Q: Are there any thermal or voltage differences between these parts?

A: No. Both parts operate across identical voltage ranges (1.71V–1.89V and 2.25V–5.5V) and temperature ranges (-40°C to 125°C) with equivalent receiver hysteresis (120 mV).

Q: What does MSL 3 (168 Hours) mean for storage and handling?

A: MSL 3 indicates Moisture Sensitivity Level 3, requiring storage in controlled humidity environments. The 168-hour specification defines the maximum floor life after moisture exposure before reflow soldering must occur.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, provided the design does not mandate automotive-grade certification. Both parts are functionally equivalent for CANbus transceiver applications with 5 Mbps data rate requirements.