TOIM4232-TR3 Equivalent & Substitute Parts

Part Overview

The TOIM4232-TR3 is an Infrared Encoder/Decoder IC manufactured by Vishay Semiconductor Opto Division, designed for IrDA communication at 115.2K baud rate in a 16-SOIC surface mount package. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The part operates within a 2.7V to 3.6V supply voltage range and is ROHS3 compliant with MSL-3 moisture sensitivity rating.

Substiute Parts

TOIM4232-TR3

Vishay Semiconductor Opto DivisionIn Stock: 20158TOIM4232-TR3 Datasheet

Current PartRFQ

TIR1000PSR

Texas InstrumentsIn Stock: 18028TIR1000PSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TOIM4232-TR3 is determined by the following critical parameters:

• Functional Type: Infrared Encoder/Decoder IC for IrDA protocol implementation
• Supply Voltage Compatibility: Operating voltage range must accommodate the 2.7V ~ 3.6V requirement of the original design
• Package Compatibility: Surface mount technology with pin count and footprint considerations
• Compliance Standards: ROHS3 compliance and REACH unaffected status maintained across substitutes
• Communication Protocol: IrDA encoder/decoder functionality at compatible baud rates

The TIR1000PSR from Texas Instruments qualifies as a manufacturer-recommended substitute based on functional equivalence as an infrared encoder/decoder IC with compatible electrical characteristics and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The TIR1000PSR presents a viable substitute for the obsolete TOIM4232-TR3 based on the following engineering criteria:

• Active Product Status: The TIR1000PSR maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete TOIM4232-TR3.
• Voltage Compatibility: The substitute's 2.7V ~ 5.5V supply range encompasses the original part's 2.7V ~ 3.6V operating window, maintaining electrical compatibility within the design specification.
• Compliance Alignment: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements.
• Moisture Sensitivity Improvement: The TIR1000PSR's MSL-1 rating provides superior moisture handling characteristics compared to the original MSL-3 specification.
• Functional Equivalence: Both components serve identical infrared encoder/decoder functionality for IrDA protocol applications.

Frequently Asked Questions (FAQ)

Q: What is the primary reason for substituting the TOIM4232-TR3?

A: The TOIM4232-TR3 is classified as obsolete. The TIR1000PSR is an active product from Texas Instruments that provides equivalent infrared encoder/decoder functionality, ensuring continued component availability and supply chain reliability.

Q: Are there package differences between the original and substitute parts?

A: Yes. The TOIM4232-TR3 uses a 16-SOIC package (0.295", 7.50mm width), while the TIR1000PSR uses an 8-SOIC package (0.209", 5.30mm width). PCB layout modifications are required to accommodate the different package footprint and pin configuration.

Q: Is the TIR1000PSR electrically compatible with the TOIM4232-TR3?

A: The TIR1000PSR operates within a 2.7V ~ 5.5V supply range, which fully encompasses the original part's 2.7V ~ 3.6V requirement. Designs operating at the original voltage specification remain electrically compatible.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the TOIM4232-TR3 and TIR1000PSR are ROHS3 compliant and REACH unaffected, maintaining regulatory compliance across the substitution.

Q: What is the significance of the moisture sensitivity level difference?

A: The TIR1000PSR's MSL-1 rating (unlimited moisture exposure) provides superior moisture handling compared to the TOIM4232-TR3's MSL-3 rating (168 hours). This represents an improvement in component robustness during storage and manufacturing processes.

Q: Will the substitute part work in existing designs without modification?

A: Electrical compatibility is maintained within the original voltage specification. However, the different package type (16-SOIC vs. 8-SOIC) requires PCB layout redesign and potential firmware or hardware interface adjustments based on pin configuration differences.