74ACT163SC Binary Counter Equivalent & Substitute Parts

Part Overview

The 74ACT163SC is a 4-bit binary counter IC manufactured by onsemi, housed in a 16-SOIC surface mount package. This component functions as a synchronous, positive edge-triggered counter with a maximum count rate of 140 MHz and operates across a supply voltage range of 4.5 V to 5.5 V. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Substiute Parts

74ACT163SC

onsemiIn Stock: 80574ACT163SC Datasheet

Current PartRFQ

MC74ACT163DR2G

onsemiIn Stock: 8584MC74ACT163DR2G Datasheet

DirectRFQ

CD74ACT163M

Harris CorporationIn Stock: 3776CD74ACT163M Datasheet

SimilarRFQ

CD74ACT163M96

Texas InstrumentsIn Stock: 7734CD74ACT163M96 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74ACT163SC is determined by strict equivalence across the following critical parameters: logic type (binary counter), bit width (4-bit), counting direction (up), reset mechanism (synchronous), trigger type (positive edge), supply voltage range (4.5 V ~ 5.5 V), and physical package (16-SOIC). Count rate and operating temperature ranges may vary between substitutes while maintaining functional compatibility. All substitute parts must be housed in the identical 16-SOIC package to ensure direct PCB compatibility without layout modifications.

Parameter Comparison

Engineering Selection Recommendations

MC74ACT163DR2G (onsemi) is the primary substitute for 74ACT163SC. Both parts are manufactured by onsemi, share identical electrical specifications including 140 MHz count rate and -40°C to 85°C operating range, and are packaged in 16-SOIC. MC74ACT163DR2G maintains active product status and ROHS3 compliance, providing long-term availability and regulatory alignment.

CD74ACT163M96 (Texas Instruments) serves as a secondary substitute. This part is active and ROHS3 compliant, ensuring continued supply and environmental compliance. The count rate is reduced to 80 MHz and operating temperature extends to -55°C to 125°C, which may be acceptable depending on application requirements.

CD74ACT163M (Harris Corporation) is not recommended for new designs. Although functionally equivalent, this part is obsolete and RoHS non-compliant, limiting its suitability for modern production environments.

Frequently Asked Questions (FAQ)

Q: Can MC74ACT163DR2G directly replace 74ACT163SC without PCB modifications?

A: Yes. Both parts are housed in 16-SOIC packages with identical pinouts and electrical specifications. Direct substitution on existing PCBs is possible without layout changes.

Q: What is the difference between MC74ACT163DR2G and CD74ACT163M96?

A: Both are functionally compatible substitutes. MC74ACT163DR2G offers 140 MHz count rate and -40°C to 85°C operating range. CD74ACT163M96 provides 80 MHz count rate and extended temperature range (-55°C to 125°C). Selection depends on application speed and temperature requirements.

Q: Why is 74ACT163SC obsolete?

A: The part is classified as obsolete by the manufacturer. Active alternatives such as MC74ACT163DR2G ensure design continuity and production support.

Q: Are all substitutes ROHS3 compliant?

A: MC74ACT163DR2G and CD74ACT163M96 are ROHS3 compliant. CD74ACT163M is RoHS non-compliant and unsuitable for applications requiring environmental compliance.

Q: Does packaging differ between substitutes?

A: MC74ACT163DR2G is supplied in Tape & Reel (TR) packaging. CD74ACT163M is supplied in Tube packaging. CD74ACT163M96 is supplied in Tape & Reel (TR) packaging. All three maintain the 16-SOIC case format for PCB compatibility.