CD74ACT163M Binary Counter Equivalent & Substitute Parts

Part Overview

The CD74ACT163M is a 4-bit binary counter IC manufactured by Texas Instruments, housed in a 16-SOIC surface mount package. This component functions as a synchronous, positive edge-triggered counter with a maximum count rate of 80 MHz and operates across a supply voltage range of 4.5 V to 5.5 V. The part is designated as Last Time Buy status, indicating limited future availability. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain flexibility for applications requiring this counter functionality.

Substiute Parts

CD74ACT163M

Texas InstrumentsIn Stock: 3770CD74ACT163M Datasheet

Current PartRFQ

CD74ACT163M96

Texas InstrumentsIn Stock: 7734CD74ACT163M96 Datasheet

MFR RecommendedRFQ

MC74ACT163DR2G

onsemiIn Stock: 8584MC74ACT163DR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74ACT163M 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), package type (16-SOIC), and mounting method (surface mount). All substitute parts must maintain identical functional specifications and physical form factors to ensure direct replacement without circuit redesign. The count rate, operating temperature range, and product status may vary between the main part and substitutes, provided the substitute meets or exceeds the application requirements.

Parameter Comparison

Engineering Selection Recommendations

CD74ACT163M96 is the primary substitute option, manufactured by Texas Instruments under Active product status. This part maintains identical electrical and thermal specifications to the main part, including the 80 MHz count rate and -55°C to 125°C operating temperature range. The transition from Tube to Tape & Reel packaging reflects standard industry practice for active production parts and does not affect functional compatibility.

MC74ACT163DR2G, manufactured by onsemi, serves as an alternative substitute with enhanced performance characteristics. This part features a higher count rate of 140 MHz, exceeding the main part specification. However, the operating temperature range is restricted to -40°C to 85°C, which may not satisfy applications requiring the full -55°C to 125°C range of the original part. Selection of this substitute requires verification that the reduced temperature range is acceptable for the intended application.

Both substitute parts maintain ROHS3 compliance and identical package geometry, ensuring direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can CD74ACT163M96 be used as a direct replacement for CD74ACT163M?

A: Yes. CD74ACT163M96 is functionally and electrically equivalent to CD74ACT163M. Both parts share identical logic specifications, supply voltage range, count rate, and operating temperature range. The packaging format change from Tube to Tape & Reel does not affect circuit performance.

Q: What is the key difference between CD74ACT163M96 and MC74ACT163DR2G?

A: Both parts are functionally equivalent 4-bit binary counters in 16-SOIC packages. MC74ACT163DR2G offers a higher count rate of 140 MHz compared to 80 MHz for CD74ACT163M96. However, MC74ACT163DR2G has a restricted operating temperature range of -40°C to 85°C versus -55°C to 125°C for CD74ACT163M96. Selection depends on whether the application requires extended low-temperature operation or higher frequency performance.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 16-SOIC package with identical pin assignments and functional pinout. No circuit modifications are required for substitution.

Q: Does the change from Tube to Tape & Reel packaging affect functionality?

A: No. Packaging format affects only handling, storage, and assembly processes. Electrical and functional performance remains unchanged.

Q: Which substitute should be selected for new designs?

A: CD74ACT163M96 is recommended for new designs, as it maintains full compatibility with the original specification and carries Active product status from Texas Instruments. MC74ACT163DR2G may be selected if the application operates within the -40°C to 85°C range and benefits from the higher 140 MHz count rate.

Q: Are all parts RoHS compliant?

A: Yes. CD74ACT163M, CD74ACT163M96, and MC74ACT163DR2G are all ROHS3 compliant.