74HC257D,652 Equivalent & Substitute Parts

Part Overview

The 74HC257D,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 74HC257D,652 functions as a data selector, routing one of four input signals to a single output based on binary select lines. It operates from a single supply voltage between 2V and 6V, with output drive capability of 7.8mA for both high and low states.

Substiute Parts

74HC257D,652

Nexperia USA Inc.In Stock: 110074HC257D,652 Datasheet

Current PartRFQ

CD74HC257M

Harris CorporationIn Stock: 45501CD74HC257M Datasheet

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CD74HC257M96

Texas InstrumentsIn Stock: 3117CD74HC257M96 Datasheet

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CD74HC257MT

Texas InstrumentsIn Stock: 1052CD74HC257MT Datasheet

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SN74HC257D

Texas InstrumentsIn Stock: 150490SN74HC257D Datasheet

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SN74HC257DR

Texas InstrumentsIn Stock: 5358SN74HC257DR Datasheet

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SN74HC257DT

Texas InstrumentsIn Stock: 991SN74HC257DT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HC257D,652 is determined by the following critical parameters:

• Circuit Configuration: All substitutes must implement a 4 x 2:1 multiplexer topology
• Package Type: All substitutes must use 16-SOIC surface mount packaging (0.154", 3.90mm width)
• Electrical Specifications: Supply voltage range (2V ~ 6V), output current (7.8mA), and single supply operation must be maintained
• Series Compatibility: All substitutes belong to the 74HC logic family
• Base Product Number: All substitutes share the 74HC257 base designation

Substitute parts are grouped by manufacturer and product status. Differences in operating temperature range and RoHS compliance status are noted but do not prevent functional substitution when the application requirements are met.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SN74HC257DR (Texas Instruments)

This part is the preferred substitute due to active product status, ROHS3 compliance, and full electrical compatibility with the original 74HC257D,652. The operating temperature range of -40°C to 85°C covers standard industrial applications. Cut Tape and Digi-Reel packaging provides flexibility for both prototype and production quantities.

Secondary Recommendation: CD74HC257M96 (Texas Instruments)

This part offers active status and ROHS3 compliance with an extended operating temperature range of -55°C to 125°C, suitable for applications requiring wider temperature performance. Tape & Reel packaging is optimized for production volumes.

Alternative Options: CD74HC257MT and SN74HC257D

Both parts provide ROHS3 compliance and full electrical compatibility. CD74HC257MT offers the extended temperature range (-55°C to 125°C), while SN74HC257D matches the original operating temperature specification (-40°C to 85°C). Both are discontinued at DiGi Electronics but may be available through alternative distribution channels.

Not Recommended: CD74HC257M (Harris Corporation)

This part is RoHS non-compliant and obsolete, making it unsuitable for new designs or applications requiring regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitutes as a direct replacement for the 74HC257D,652?

A: Yes, all listed substitutes are functionally equivalent. They share the same 4 x 2:1 multiplexer circuit configuration, 16-SOIC package, supply voltage range (2V ~ 6V), and output current specifications (7.8mA). Differences in operating temperature range and product status do not affect functional compatibility in standard applications.

Q: What is the difference between the operating temperature ranges?

A: The 74HC257D,652 and SN74HC257D/SN74HC257DR operate from -40°C to 85°C. The CD74HC257M, CD74HC257M96, and CD74HC257MT extend this range to -55°C to 125°C. Select the extended range parts only if your application requires operation below -40°C or above 85°C.

Q: Why is CD74HC257M not recommended despite being a substitute?

A: CD74HC257M is RoHS non-compliant and obsolete. Applications subject to RoHS regulations or requiring long-term supply assurance should use ROHS3-compliant alternatives such as SN74HC257DR or CD74HC257M96.

Q: What packaging options are available?

A: All substitutes use 16-SOIC surface mount packaging (0.154", 3.90mm width). Packaging variants differ by supplier format: Tube, Cut Tape (CT) & Digi-Reel, or Tape & Reel (TR). Select based on procurement volume and handling requirements.

Q: Is the 74HC257D,652 pin-compatible with all substitutes?

A: Yes. All substitutes use the same 16-SOIC package with identical pin assignments for the 4 x 2:1 multiplexer function. No PCB layout modifications are required.

Q: Which substitute has the best current availability?

A: SN74HC257DR (Texas Instruments) is the only part with active product status and represents the best choice for new designs requiring ongoing supply assurance.