CD74HCT157M Equivalent & Substitute Parts

Part Overview

The CD74HCT157M is a 4 x 2:1 multiplexer logic integrated circuit manufactured by Texas Instruments in 16-SOIC surface mount packaging. This part is classified as Last Time Buy, indicating limited availability from the original manufacturer. The CD74HCT157M operates with single supply voltage (4.5V to 5.5V) and is suitable for digital signal routing and selection applications requiring 4-channel multiplexing functionality. Due to its Last Time Buy status, identifying functionally equivalent alternatives is necessary for design continuity and long-term component sourcing.

Substiute Parts

CD74HCT157M

Texas InstrumentsIn Stock: 2105CD74HCT157M Datasheet

Current PartRFQ

CD74HCT157M96

Texas InstrumentsIn Stock: 4962CD74HCT157M96 Datasheet

MFR RecommendedRFQ

74HCT157D,652

NXP SemiconductorsIn Stock: 1789974HCT157D,652 Datasheet

MFR RecommendedRFQ

74HCT157D,653

Nexperia USA Inc.In Stock: 128774HCT157D,653 Datasheet

MFR RecommendedRFQ

74HCT157D-Q100,118

NXP USA Inc.In Stock: 618274HCT157D-Q100,118 Datasheet

MFR RecommendedRFQ

SN74HCT157D

Texas InstrumentsIn Stock: 2256SN74HCT157D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD74HCT157M is determined by the following critical parameters:

• Circuit configuration: 4 x 2:1 multiplexer topology
• Package type: 16-SOIC surface mount form factor
• Voltage supply range: 4.5V to 5.5V single supply
• Output current capability: 4mA minimum (high and low)
• Mounting compatibility: Surface mount technology

All substitute parts listed maintain identical circuit topology, package footprint, and core electrical specifications. Variations in product status, temperature range, output current ratings, and packaging format (Tube vs. Tape & Reel vs. Bulk) are noted but do not affect functional interchangeability in applications where the CD74HCT157M operates within its specified parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: CD74HCT157M96

The CD74HCT157M96 is the direct equivalent from Texas Instruments with Active product status. It maintains identical electrical specifications and 16-SOIC packaging. The only difference is packaging format (Tape & Reel vs. Tube), which affects procurement and handling but not functional performance. This part is recommended for new designs and ongoing production requiring the widest operating temperature range (-55°C to 125°C).

Secondary Recommendations: 74HCT157D,652 and 74HCT157D,653

Both NXP/Nexperia variants are Active products with identical circuit topology and package footprint. These parts operate across -40°C to 125°C, which is suitable for most industrial and commercial applications. The 74HCT157D,653 is available in Tape & Reel format for automated assembly, while 74HCT157D,652 is supplied in Bulk format.

Automotive Grade Option: 74HCT157D-Q100,118

This NXP USA variant includes AEC-Q100 automotive qualification and is suitable for automotive applications requiring functional equivalence with automotive-grade certification.

Not Recommended: SN74HCT157D

This Texas Instruments part is Discontinued at DiGi Electronics and exhibits reduced operating temperature range (-40°C to 85°C) compared to the original CD74HCT157M. Additionally, output current ratings are elevated (6mA vs. 4mA), which may introduce compatibility concerns in current-sensitive applications.

Frequently Asked Questions (FAQ)

Q: Can I use CD74HCT157M96 as a direct replacement for CD74HCT157M?

A: Yes. Both parts are manufactured by Texas Instruments with identical electrical specifications, circuit topology, and 16-SOIC package footprint. The difference is packaging format (Tape & Reel vs. Tube), which does not affect functional performance.

Q: What is the difference between NXP and Texas Instruments versions?

A: All parts share the same 74HCT157 base design and are cross-compatible at the functional level. Differences exist in operating temperature range (NXP: -40°C to 125°C vs. TI: -55°C to 125°C) and product status. Select based on your application's temperature requirements and supply chain availability.

Q: Is the SN74HCT157D suitable as a substitute?

A: The SN74HCT157D is not recommended. It is Discontinued and has a narrower operating temperature range (-40°C to 85°C). Additionally, its output current rating (6mA) differs from the CD74HCT157M (4mA), which may affect circuit behavior in current-limited applications.

Q: What does "Last Time Buy" mean for the CD74HCT157M?

A: Last Time Buy indicates that Texas Instruments will no longer manufacture this specific part after current inventory is depleted. Designs should transition to Active alternatives such as CD74HCT157M96 or NXP equivalents for long-term component availability.

Q: Are all substitute parts RoHS3 compliant?

A: The CD74HCT157M, CD74HCT157M96, 74HCT157D,653, and SN74HCT157D are explicitly RoHS3 compliant. The 74HCT157D,652 and 74HCT157D-Q100,118 do not list RoHS status in the provided specifications; verify with the manufacturer if RoHS compliance is required.

Q: Can I mix packaging formats (Tube, Tape & Reel, Bulk) in production?

A: Yes, from a functional standpoint. However, packaging format affects handling, storage, and automated assembly processes. Maintain consistency within a production batch to avoid assembly line complications.

Q: Which substitute offers the widest operating temperature range?

A: The CD74HCT157M and CD74HCT157M96 both operate from -55°C to 125°C, providing the widest temperature range. NXP/Nexperia variants operate from -40°C to 125°C, which is suitable for most industrial applications but narrower than the Texas Instruments range.