74LCX652MSA Equivalent & Substitute Parts

Part Overview

The 74LCX652MSA is a non-inverting transceiver IC manufactured by onsemi, designed for 8-bit data transmission with 3-state output capability. This component operates across a 2V to 3.6V supply voltage range and is housed in a 24-SSOP package. The part is currently classified as obsolete, making equivalent substitute components necessary for ongoing system support and new design implementations. Texas Instruments offers functionally compatible alternatives in the 74LVC series that maintain core electrical and mechanical compatibility while offering active product status.

Substiute Parts

74LCX652MSA

onsemiIn Stock: 113774LCX652MSA Datasheet

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SN74LVC652APW

Texas InstrumentsIn Stock: 1327SN74LVC652APW Datasheet

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SN74LVC652APWR

Texas InstrumentsIn Stock: 3458SN74LVC652APWR Datasheet

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SN74LVC652APWT

Texas InstrumentsIn Stock: 1842SN74LVC652APWT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74LCX652MSA are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Core Electrical Parameters:

• Logic Type: Transceiver, Non-Inverting (identical function)
• Number of Elements: 1 (single transceiver element)
• Number of Bits per Element: 8 (8-bit data width)
• Output Type: 3-State (tri-state output capability)
• Current - Output High, Low: 24mA, 24mA (identical drive capability)
• Operating Temperature: -40°C ~ 85°C (TA) (identical thermal range)

Voltage Supply Compatibility: The 74LCX652MSA operates at 2V ~ 3.6V. Substitute parts from the 74LVC series operate at 1.65V ~ 3.6V, providing a wider lower voltage range while maintaining full compatibility within the original part's operating window.

Package Considerations: The original 74LCX652MSA uses 24-SSOP packaging (0.209", 5.30mm width). Substitute parts use 24-TSSOP packaging (0.173", 4.40mm width). Both are 24-pin surface mount packages with compatible pinouts, though physical dimensions differ slightly. PCB layout modifications may be required for direct substitution.

Product Status: All Texas Instruments substitute parts maintain active product status, ensuring long-term availability and continued manufacturing support compared to the obsolete onsemi original.

Parameter Comparison

Engineering Selection Recommendations

SN74LVC652APW (Tube Packaging) This variant is supplied in tube packaging and is suitable for lower-volume applications or manual assembly processes. It maintains all electrical specifications identical to the original 74LCX652MSA while offering active product status from Texas Instruments. The ROHS3 compliance provides enhanced environmental and regulatory alignment compared to the obsolete original part.

SN74LVC652APWR (Tape & Reel Packaging) This variant is supplied in tape and reel format with 3,400 pieces in current inventory, making it optimal for high-volume production environments. The tape and reel packaging supports automated pick-and-place assembly processes. Electrical specifications remain identical to the tube variant, with the same ROHS3 compliance certification.

SN74LVC652APWT (Tape & Reel Packaging) This variant is also supplied in tape and reel format with 1,776 pieces in current inventory. It provides the same electrical performance and ROHS3 compliance as the APWR variant. Selection between APWR and APWT depends on inventory availability and procurement lead time requirements.

Package Transition Consideration All three Texas Instruments substitutes use 24-TSSOP packaging versus the original 24-SSOP. While both are 24-pin surface mount packages with compatible pinouts, the TSSOP package is narrower (4.40mm versus 5.30mm width). PCB footprint redesign is required for direct substitution. The electrical functionality and pin assignments remain fully compatible.

Frequently Asked Questions (FAQ)

Q: Can the SN74LVC652 series directly replace the 74LCX652MSA without PCB modifications?

A: Electrical functionality is fully compatible. However, the package transition from 24-SSOP to 24-TSSOP requires PCB footprint redesign. Pin assignments and electrical characteristics are identical, but physical dimensions differ. Direct socket substitution is not possible without PCB layout changes.

Q: What is the voltage supply difference between the 74LCX652MSA and SN74LVC652 substitutes?

A: The original 74LCX652MSA operates at 2V ~ 3.6V supply voltage. The SN74LVC652 series operates at 1.65V ~ 3.6V. The substitute parts support a wider lower voltage range, providing enhanced flexibility for low-power applications while maintaining full compatibility within the original part's operating window.

Q: Are all three Texas Instruments variants electrically identical?

A: Yes. SN74LVC652APW, SN74LVC652APWR, and SN74LVC652APWT are electrically identical. The differences are packaging format only: APW is supplied in tubes, while APWR and APWT are supplied in tape and reel. Selection depends on assembly process requirements and inventory availability.

Q: What compliance certifications apply to the substitute parts?

A: All three SN74LVC652 variants are ROHS3 compliant and REACH unaffected. The original 74LCX652MSA is REACH unaffected but predates ROHS3 requirements. The substitute parts provide enhanced environmental compliance for new designs and manufacturing processes.

Q: Is the 24-TSSOP package compatible with existing 24-SSOP PCB layouts?

A: No. While both are 24-pin surface mount packages with compatible pinouts, the TSSOP package is narrower (4.40mm versus 5.30mm width). PCB footprint modification is required. Pin assignments and electrical characteristics are fully compatible, but physical placement differs.

Q: Which substitute variant should be selected for high-volume production?

A: For high-volume production, select either SN74LVC652APWR (3,400 pieces in stock) or SN74LVC652APWT (1,776 pieces in stock), both supplied in tape and reel format. These support automated assembly processes. Selection between the two depends on procurement lead time and inventory availability requirements.