CD74HC257M Equivalent & Substitute Parts

Part Overview

The CD74HC257M is a 4 x 2:1 multiplexer logic integrated circuit manufactured by Texas Instruments in a 16-SOIC surface mount package. This component is classified as Last Time Buy, indicating discontinued production with limited availability. The CD74HC257M operates as a single-supply logic multiplexer suitable for digital signal routing and selection applications in consumer and industrial electronics. Alternative equivalent parts are necessary due to inventory constraints and product lifecycle status.

Substiute Parts

CD74HC257M

Texas InstrumentsIn Stock: 821CD74HC257M Datasheet

Current PartRFQ

CD74HC257M96

Texas InstrumentsIn Stock: 3117CD74HC257M96 Datasheet

MFR RecommendedRFQ

74HC257D,653

Nexperia USA Inc.In Stock: 830074HC257D,653 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD74HC257M is determined by strict equivalence across the following critical parameters:

• Circuit type and configuration (4 x 2:1 multiplexer)
• Output current specifications (7.8mA high and low)
• Supply voltage range (2V ~ 6V)
• Package footprint (16-SOIC, 0.154" width, 3.90mm)
• Surface mount mounting type
• RoHS3 compliance status

The identified substitute parts maintain identical electrical performance and mechanical compatibility. Variations in operating temperature range and packaging format (tape & reel versus tube) do not affect functional substitution for this logic component category.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are functionally equivalent to the CD74HC257M based on electrical and mechanical parameters. The CD74HC257M96 is manufactured by Texas Instruments with Active product status and maintains identical operating temperature specifications (-55°C ~ 125°C). The 74HC257D,653 is manufactured by Nexperia USA Inc., also with Active status, with a reduced lower operating temperature limit of -40°C.

Selection between substitutes should prioritize product availability and supply chain requirements. The CD74HC257M96 offers continuity with the original manufacturer. The 74HC257D,653 provides an alternative source with higher inventory availability. Both parts satisfy RoHS3 compliance and REACH requirements applicable to the original component.

Frequently Asked Questions (FAQ)

Q: Can CD74HC257M96 directly replace CD74HC257M in existing designs?

A: Yes. The CD74HC257M96 is a direct functional equivalent with identical electrical specifications, output current ratings, supply voltage range, and 16-SOIC package footprint. The primary difference is packaging format (tape & reel versus tube) and active product status versus last time buy.

Q: What is the temperature difference between CD74HC257M and 74HC257D,653?

A: The CD74HC257M operates from -55°C to 125°C, while the 74HC257D,653 operates from -40°C to 125°C. For applications requiring operation below -40°C, the CD74HC257M or CD74HC257M96 must be used. For standard industrial and consumer applications within -40°C to 125°C, both are equivalent.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 16-SOIC package with identical 0.154" width and 3.90mm dimensions, ensuring mechanical and electrical pin compatibility on PCB layouts designed for the CD74HC257M.

Q: Do the substitute parts meet the same compliance standards?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 (unlimited moisture sensitivity). Compliance certifications are equivalent across all options.

Q: Which substitute should be selected for new designs?

A: For new designs, either CD74HC257M96 or 74HC257D,653 is appropriate, as both carry Active product status. CD74HC257M96 maintains Texas Instruments sourcing continuity. 74HC257D,653 provides an alternative manufacturer option with higher inventory levels.