CD74ACT157M Equivalent & Substitute Parts

Part Overview

The CD74ACT157M is a 4 x 2:1 multiplexer logic integrated circuit manufactured by Texas Instruments in a 16-SOIC surface mount package. This part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. The CD74ACT157M operates as a single independent multiplexer circuit with dual output capability (24mA high and low), designed for standard TTL logic level applications with a 4.5V to 5.5V supply range.

Substiute Parts

CD74ACT157M

Texas InstrumentsIn Stock: 1420CD74ACT157M Datasheet

Current PartRFQ

CD74ACT157M96

Texas InstrumentsIn Stock: 25290CD74ACT157M96 Datasheet

DirectRFQ

MC74ACT157DG

onsemiIn Stock: 1689MC74ACT157DG Datasheet

MFR RecommendedRFQ

MC74ACT157DR2G

onsemiIn Stock: 5604MC74ACT157DR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CD74ACT157M is determined by strict equivalence across the following critical parameters: circuit configuration (4 x 2:1 multiplexer), output current specifications (24mA high and low), supply voltage range (4.5V ~ 5.5V), package type (16-SOIC), and compliance certifications (ROHS3, REACH Unaffected, EAR99).

All identified substitutes maintain identical electrical specifications and package dimensions. Differences exist only in packaging format (Tube versus Tape & Reel), manufacturer (Texas Instruments versus onsemi), and operating temperature range. The operating temperature range variance does not affect substitution eligibility when the application operates within the overlapping temperature window (-40°C ~ 85°C).

Parameter Comparison

Engineering Selection Recommendations

CD74ACT157M96 is the direct equivalent from Texas Instruments, maintaining identical electrical specifications and the extended operating temperature range (-55°C ~ 125°C). This part differs only in packaging format (Tape & Reel versus Tube) and is currently in active production status with higher inventory availability (25,200 units).

MC74ACT157DG and MC74ACT157DR2G are onsemi equivalents with active product status. Both maintain identical electrical specifications and package dimensions. The operating temperature range is narrower (-40°C ~ 85°C) compared to the original part. MC74ACT157DG is supplied in Tube packaging, while MC74ACT157DR2G is supplied in Tape & Reel format. Selection between these onsemi options depends on packaging requirements for assembly processes.

All substitutes maintain ROHS3 compliance, REACH Unaffected status, and MSL 1 rating, ensuring compatibility with standard manufacturing and environmental requirements.

Frequently Asked Questions (FAQ)

Q: Can CD74ACT157M96 be used as a direct replacement for CD74ACT157M?

A: Yes. CD74ACT157M96 is electrically and mechanically identical to CD74ACT157M. Both are Texas Instruments products with the same circuit configuration, output current ratings, supply voltage range, and 16-SOIC package dimensions. The only difference is packaging format (Tape & Reel versus Tube).

Q: What is the difference between the onsemi substitutes (MC74ACT157DG and MC74ACT157DR2G)?

A: Both onsemi parts are electrically equivalent to the original CD74ACT157M. The difference is packaging format: MC74ACT157DG uses Tube packaging, while MC74ACT157DR2G uses Tape & Reel format. Both have the same operating temperature range (-40°C ~ 85°C) and identical electrical specifications.

Q: Does the narrower operating temperature range of onsemi parts affect substitution?

A: The onsemi parts operate from -40°C ~ 85°C, compared to the original -55°C ~ 125°C range. Substitution is valid when the application operates within the overlapping range (-40°C ~ 85°C). Applications requiring operation below -40°C or above 85°C must use CD74ACT157M96 or the original CD74ACT157M.

Q: Are all substitutes RoHS compliant?

A: Yes. All substitute parts (CD74ACT157M96, MC74ACT157DG, and MC74ACT157DR2G) are ROHS3 compliant with MSL 1 rating and REACH Unaffected status, matching the original part's compliance profile.

Q: Which substitute should be selected for high-volume production?

A: CD74ACT157M96 offers the highest inventory availability (25,200 units) and is supplied in Tape & Reel format, which is standard for automated assembly processes. This part maintains all original specifications including the extended temperature range.