CD74ACT164M Equivalent & Substitute Parts

Part Overview

The CD74ACT164M is an 8-bit serial-in parallel-out shift register manufactured by Texas Instruments, housed in a 14-SOIC surface mount package. This logic component converts serial data input into parallel output across 8 bits, operating within a 4.5V to 5.5V supply voltage range and supporting temperatures from -55°C to 125°C. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

CD74ACT164M

Texas InstrumentsIn Stock: 1166CD74ACT164M Datasheet

Current PartRFQ

CD74ACT164M96

Texas InstrumentsIn Stock: 3665CD74ACT164M96 Datasheet

DirectRFQ

CD74HCT164M

Harris CorporationIn Stock: 1957CD74HCT164M Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CD74ACT164M is determined by strict equivalence across the following parameters: logic type (shift register), bit configuration (8-bit), function (serial to parallel conversion), output type (push-pull), supply voltage range (4.5V ~ 5.5V), operating temperature range (-55°C ~ 125°C), package type (14-SOIC), and mounting method (surface mount). Parts meeting all these criteria are considered functionally equivalent and mechanically compatible.

Two substitute parts are identified:

CD74ACT164M96 (Texas Instruments) — Direct manufacturer equivalent with identical electrical and mechanical specifications. This part maintains the same series designation (74ACT) and is currently in active production status.

CD74HCT164M (Harris Corporation) — Parametric equivalent meeting all functional and mechanical requirements. This part operates within the same voltage and temperature ranges and uses the identical package configuration, though it represents a different logic series (74HCT) and is classified as obsolete.

Parameter Comparison

Engineering Selection Recommendations

CD74ACT164M96 is the primary substitute choice. It is manufactured by Texas Instruments, maintains identical electrical and mechanical specifications, carries active product status, and meets ROHS3 compliance requirements. This part provides direct continuity with the original design without requiring circuit modifications.

CD74HCT164M serves as an alternative substitute when CD74ACT164M96 availability is constrained. It meets all functional and mechanical requirements and operates within identical voltage and temperature parameters. However, this part is classified as obsolete and does not meet RoHS compliance standards. Selection of this part should be limited to applications where legacy component sourcing is necessary and regulatory compliance is not a requirement.

Frequently Asked Questions (FAQ)

Q: Can CD74ACT164M96 be used as a direct replacement for CD74ACT164M?

A: Yes. CD74ACT164M96 is a direct manufacturer equivalent. Both parts share identical electrical specifications, operating parameters, and 14-SOIC package configuration. No circuit modifications are required.

Q: What is the difference between the 74ACT and 74HCT logic series?

A: Both series operate within the same 4.5V to 5.5V supply voltage range and -55°C to 125°C temperature range. The primary difference lies in internal logic family implementation. For the CD74ACT164M and CD74HCT164M, functional equivalence is maintained across all specified parameters.

Q: Is CD74HCT164M suitable for new designs?

A: CD74HCT164M is classified as obsolete and does not meet RoHS compliance. It is suitable only for replacement or maintenance of existing systems where the part was originally specified. New designs should use CD74ACT164M96.

Q: Are there packaging differences between these parts?

A: All three parts use the 14-SOIC (0.154", 3.90mm Width) surface mount package. Mechanical compatibility is maintained across all substitutes.

Q: What inventory status should influence part selection?

A: CD74ACT164M96 is currently in active production with 3600 units in stock. CD74ACT164M is discontinued. CD74HCT164M is obsolete with 1900 units in stock. For ongoing production, CD74ACT164M96 is the recommended choice based on availability and product status.