74LCX652MTC Equivalent & Substitute Parts

Part Overview

The 74LCX652MTC is a non-inverting transceiver IC manufactured by onsemi, designed for 8-bit bidirectional data transmission with 3-state output capability. This component operates across a supply voltage range of 2V to 3.6V and is housed in a 24-TSSOP surface mount package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

74LCX652MTC

onsemiIn Stock: 147974LCX652MTC 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

Substitution eligibility for the 74LCX652MTC is determined by the following critical parameters:

Functional Equivalence Criteria:

• Logic type: Transceiver, Non-Inverting
• Number of elements: 1
• Number of bits per element: 8
• Output type: 3-State
• Output current capability: 24mA (both high and low)
• Package / Case: 24-TSSOP (0.173", 4.40mm Width)
• Mounting type: Surface Mount

Voltage and Temperature Compatibility:

• Supply voltage range must encompass or be compatible with 2V ~ 3.6V
• Operating temperature range: -40°C ~ 85°C (TA)

Compliance Requirements:

• RoHS3 Compliant
• MSL rating: 1 (Unlimited)

The Texas Instruments SN74LVC652 series parts meet all functional and electrical requirements for direct substitution. The 74LVC series operates at a lower minimum supply voltage (1.65V) compared to the 74LCX series (2V), providing enhanced compatibility with modern low-voltage applications while maintaining full backward compatibility with 2V ~ 3.6V systems.

Parameter Comparison

Engineering Selection Recommendations

All three Texas Instruments SN74LVC652 variants are direct functional substitutes for the obsolete 74LCX652MTC. Selection among the three substitute options is determined by packaging and procurement requirements:

SN74LVC652APW (Tube Packaging): Suitable for low-volume applications, prototype development, and manual assembly processes where individual component handling is required.

SN74LVC652APWR (Tape & Reel Packaging): Recommended for standard production volumes and automated assembly operations. This variant offers the highest current inventory availability at 3400 pieces.

SN74LVC652APWT (Tape & Reel Packaging): Alternative tape and reel option with 1776 pieces in stock, suitable for production environments where packaging format is standardized.

All substitute parts maintain active product status with Texas Instruments, ensuring long-term availability and continued technical support. The extended lower supply voltage range (1.65V minimum) of the 74LVC series provides additional design flexibility for low-power applications while maintaining full compatibility with the original 2V ~ 3.6V specification.

Frequently Asked Questions (FAQ)

Q: Can the SN74LVC652 series directly replace the 74LCX652MTC without circuit modifications?

A: Yes. The SN74LVC652 series maintains identical functional specifications, pin configuration, output current ratings, and operating temperature range. The extended lower supply voltage range of the 74LVC series (1.65V minimum versus 2V minimum) does not affect compatibility in systems designed for 2V ~ 3.6V operation.

Q: What is the difference between the three Texas Instruments substitute part numbers?

A: The three variants differ only in packaging format. SN74LVC652APW is supplied in tube packaging for manual handling. SN74LVC652APWR and SN74LVC652APWT are both supplied in tape and reel format for automated assembly. All three are electrically and functionally identical.

Q: Are there any compliance or certification differences between the original and substitute parts?

A: No. Both the 74LCX652MTC and all SN74LVC652 variants are ROHS3 compliant with MSL rating of 1 (Unlimited). Compliance certifications are equivalent across all parts.

Q: Why is the 74LCX652MTC classified as obsolete?

A: The 74LCX series has been superseded by the 74LVC series, which offers improved performance characteristics including lower minimum supply voltage and enhanced reliability. Texas Instruments continues to manufacture the functionally equivalent SN74LVC652 series as the active replacement.

Q: What is the significance of the 24-TSSOP package specification?

A: The 24-TSSOP (Thin Shrink Small Outline Package) is a surface mount package with 0.173 inches (4.40mm) width. This specification is identical across all substitute parts, ensuring direct PCB compatibility without layout modifications.

Q: Can the SN74LVC652 operate at voltages below 2V?

A: Yes. The SN74LVC652 series supports supply voltages as low as 1.65V, extending the operational range below the original 74LCX652MTC specification of 2V minimum. This capability is beneficial for low-power applications but does not affect compatibility with 2V ~ 3.6V systems.