74HCT157D,652 Equivalent & Substitute Parts

Part Overview

The 74HCT157D,652 is a 4 x 2:1 multiplexer logic integrated circuit manufactured by Nexperia USA Inc. in a 16-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74HCT157 series provides single-supply operation with standard TTL-compatible logic levels, suitable for signal routing and data selection applications in digital systems.

Substiute Parts

74HCT157D,652

Nexperia USA Inc.In Stock: 85174HCT157D,652 Datasheet

Current PartRFQ

CD74HCT157M

Harris CorporationIn Stock: 2111CD74HCT157M Datasheet

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CD74HCT157M96

Texas InstrumentsIn Stock: 4962CD74HCT157M96 Datasheet

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CD74HCT157MT

Texas InstrumentsIn Stock: 2385CD74HCT157MT Datasheet

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SN74HCT157D

Texas InstrumentsIn Stock: 2256SN74HCT157D Datasheet

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SN74HCT157DR

Texas InstrumentsIn Stock: 2216SN74HCT157DR Datasheet

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SN74HCT157DT

Texas InstrumentsIn Stock: 2193SN74HCT157DT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HCT157D,652 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Circuit configuration: 4 x 2:1 multiplexer topology
• Supply voltage range: 4.5V ~ 5.5V
• Logic family: 74HCT series (CMOS with TTL input/output levels)
• Package type: 16-SOIC form factor

Mechanical Compatibility:

• Package dimensions: 16-SOIC (0.154", 3.90mm Width)
• Mounting type: Surface mount

Compliance & Regulatory:

• RoHS3 compliance preferred for new designs
• REACH unaffected status

Substitute parts must maintain identical circuit configuration, supply voltage specifications, and package dimensions. Output current ratings and operating temperature ranges may vary within acceptable limits for the application. Product status (active, discontinued, or last-time buy) affects availability and long-term sourcing strategy but does not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: CD74HCT157M96

The CD74HCT157M96 from Texas Instruments is the preferred substitute. It maintains identical electrical specifications to the 74HCT157D,652, including 4mA output current and 4.5V ~ 5.5V supply voltage. The part is currently active in production, ensuring long-term availability. It carries ROHS3 compliance and REACH unaffected status, meeting modern regulatory requirements. The extended operating temperature range (-55°C ~ 125°C) provides additional margin for demanding applications.

Secondary Recommendation: SN74HCT157DR

The SN74HCT157DR is an active Texas Instruments product suitable for applications where higher output current (6mA) is acceptable. This part is available in Cut Tape and Digi-Reel packaging, offering flexibility for both prototype and production quantities. ROHS3 compliance and REACH unaffected status are maintained. The narrower operating temperature range (-40°C ~ 85°C) is suitable for standard industrial applications.

Alternative for Last-Time Buy Scenarios: CD74HCT157MT

The CD74HCT157MT carries last-time-buy status from Texas Instruments, indicating limited future availability. It matches the electrical specifications of CD74HCT157M96 and may be considered for designs requiring extended procurement windows before transition to active alternatives.

Not Recommended: CD74HCT157M

The CD74HCT157M from Harris Corporation is obsolete and RoHS non-compliant, making it unsuitable for new designs or long-term production support.

Frequently Asked Questions (FAQ)

Q: Can I use SN74HCT157D or SN74HCT157DT as direct replacements for 74HCT157D,652?

A: These parts are functionally compatible but have higher output current specifications (6mA vs. 4mA) and a narrower operating temperature range (-40°C ~ 85°C vs. -40°C ~ 125°C). They are suitable substitutes if your application does not require the full temperature range of the original part. Both are discontinued at DiGi Electronics, limiting future availability.

Q: What is the difference between CD74HCT157M96 and CD74HCT157MT?

A: Both parts are manufactured by Texas Instruments with identical electrical specifications. CD74HCT157M96 is supplied in Tape & Reel packaging and is currently active. CD74HCT157MT is also in Tape & Reel packaging but carries last-time-buy status. For new designs, CD74HCT157M96 is preferred due to active production status.

Q: Are all substitute parts in the same 16-SOIC package?

A: Yes. All listed substitute parts use the 16-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical compatibility with the original 74HCT157D,652 design.

Q: Does packaging format (Tube vs. Tape & Reel) affect electrical performance?

A: No. Packaging format affects only handling, storage, and procurement logistics. Electrical performance and functional characteristics remain identical regardless of packaging type.

Q: Which substitute part has the best long-term availability?

A: CD74HCT157M96 from Texas Instruments is currently active in production, providing the best long-term availability and sourcing stability for ongoing designs and production runs.