CD74ACT161M Equivalent & Substitute Parts

Part Overview

The CD74ACT161M is a 4-bit binary counter IC manufactured by Texas Instruments in a 16-SOIC surface mount package. This logic component functions as a synchronous counter with asynchronous reset, operating at a maximum count rate of 80 MHz across a supply voltage range of 4.5 V to 5.5 V. The part is currently in Last Time Buy status, indicating discontinued production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring this counter functionality.

Substiute Parts

CD74ACT161M

Texas InstrumentsIn Stock: 1776CD74ACT161M Datasheet

Current PartRFQ

CD74ACT161M96

Texas InstrumentsIn Stock: 4021CD74ACT161M96 Datasheet

MFR RecommendedRFQ

MC74ACT161DG

onsemiIn Stock: 1928MC74ACT161DG Datasheet

MFR RecommendedRFQ

MC74ACT161DR2G

onsemiIn Stock: 2975MC74ACT161DR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74ACT161M is determined by strict equivalence across the following critical parameters: logic type (binary counter), bit configuration (4-bit), element count (1), counting direction (up), reset mechanism (asynchronous), timing architecture (synchronous), trigger polarity (positive edge), supply voltage range (4.5 V ~ 5.5 V), package type (16-SOIC), and mounting method (surface mount). All identified substitutes maintain these core electrical and mechanical specifications. Variations in count rate, operating temperature range, product status, and packaging format (tube, tape & reel, or cut tape) do not preclude functional substitution when the application requirements fall within the substitute part's specifications.

Parameter Comparison

Engineering Selection Recommendations

CD74ACT161M96 is the primary substitute, manufactured by Texas Instruments with Active product status, ensuring long-term availability and supply chain stability. This part maintains identical electrical specifications and operating temperature range while offering Tape & Reel packaging suitable for automated assembly processes.

MC74ACT161DG and MC74ACT161DR2G, manufactured by onsemi, provide functional equivalence with enhanced count rate performance (125 MHz versus 80 MHz). Both parts carry Last Time Buy status. MC74ACT161DG is supplied in Tube packaging, while MC74ACT161DR2G is available in Cut Tape format. The onsemi variants operate within a narrower temperature range (-40°C ~ 85°C) compared to the original part (-55°C ~ 125°C); selection should account for application temperature requirements.

All substitutes maintain ROHS3 compliance and identical 16-SOIC package geometry, ensuring direct mechanical and electrical compatibility in existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can CD74ACT161M96 directly replace CD74ACT161M in production? A: Yes. CD74ACT161M96 maintains identical electrical specifications, supply voltage range, operating temperature range, and 16-SOIC package dimensions. The difference in packaging format (Tape & Reel versus Tube) does not affect functional compatibility.

Q: What are the differences between Texas Instruments and onsemi substitutes? A: Texas Instruments CD74ACT161M96 maintains the original -55°C ~ 125°C operating temperature range. onsemi parts (MC74ACT161DG and MC74ACT161DR2G) operate within -40°C ~ 85°C. Both onsemi variants offer higher count rate performance (125 MHz). Selection depends on application temperature requirements and performance specifications.

Q: Are packaging format differences significant for substitution? A: Packaging format (Tube, Tape & Reel, Cut Tape) affects handling and assembly processes but does not impact electrical or mechanical compatibility. Selection should align with manufacturing assembly capabilities and supply chain requirements.

Q: Do all substitutes meet the same compliance standards? A: Yes. All listed substitutes are ROHS3 compliant with identical REACH and ECCN classifications, ensuring regulatory equivalence for applications requiring these certifications.

Q: Can onsemi parts be used in applications requiring the full -55°C ~ 125°C temperature range? A: No. onsemi MC74ACT161DG and MC74ACT161DR2G are rated only to -40°C ~ 85°C. Applications requiring operation below -40°C or above 85°C must use Texas Instruments CD74ACT161M or CD74ACT161M96.