74ACT374MSAX Equivalent & Substitute Parts

Part Overview

The 74ACT374MSAX is a D-type flip-flop logic integrated circuit manufactured by onsemi, featuring 1 element with 8-bit parallel data storage capability. This component operates as a standard positive edge-triggered flip-flop with tri-state, non-inverted outputs. The part is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The 74ACT374 base product family offers multiple packaging and manufacturer options to support component sourcing flexibility.

Substiute Parts

74ACT374MSAX

onsemiIn Stock: 87374ACT374MSAX Datasheet

Current PartRFQ

SN74ACT374PW

Texas InstrumentsIn Stock: 3334SN74ACT374PW Datasheet

SimilarRFQ

SN74ACT374PWR

Texas InstrumentsIn Stock: 1954SN74ACT374PWR Datasheet

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SN74ACT374DBR

Texas InstrumentsIn Stock: 2186SN74ACT374DBR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74ACT374MSAX are qualified based on the following criteria:

Core Functional Parameters (Must Match):

• Base product number: 74ACT374
• Type: D-Type flip-flop
• Number of elements: 1
• Number of bits per element: 8
• Output type: Tri-State, Non-Inverted
• Trigger type: Positive Edge
• Clock frequency: 160 MHz
• Supply voltage range: 4.5V ~ 5.5V
• Operating temperature range: -40°C ~ 85°C

Package Compatibility Considerations: Substitutes are grouped into two categories based on package type. The 74ACT374MSAX uses 20-SSOP packaging (0.209", 5.30mm width). Substitutes in the same 20-SSOP package provide direct pin-compatible replacement. Substitutes in 20-TSSOP packaging (0.173", 4.40mm width) maintain identical pinout and electrical function but differ in physical dimensions, requiring PCB layout verification before implementation.

Performance Variations: Propagation delay specifications may vary slightly between manufacturers while remaining within acceptable operating parameters. Quiescent current (Iq) values differ between the main part (40 µA) and substitute parts (4 µA), reflecting manufacturing improvements in later production versions.

Parameter Comparison

Engineering Selection Recommendations

SN74ACT374DBR (Texas Instruments, 20-SSOP): This part provides direct package compatibility with the 74ACT374MSAX, maintaining identical 20-SSOP form factor and pinout. The SN74ACT374DBR is currently active in production status and ROHS3 compliant, making it the preferred choice for designs requiring no PCB layout modifications. Propagation delay is improved to 8.5 ns compared to the original 10 ns specification.

SN74ACT374PW and SN74ACT374PWR (Texas Instruments, 20-TSSOP): Both parts use the narrower 20-TSSOP package (0.173", 4.40mm width) while maintaining identical electrical specifications and pinout. These options are suitable for space-constrained applications where PCB layout can accommodate the reduced package width. The SN74ACT374PWR is currently active in production status. Both parts are ROHS3 compliant.

Product Status Consideration: The 74ACT374MSAX is obsolete. All listed substitutes from Texas Instruments are either active or discontinued at specific distributors, providing improved long-term availability for new designs and production continuity.

Frequently Asked Questions (FAQ)

Q: Can the SN74ACT374DBR directly replace the 74ACT374MSAX without PCB modifications?

A: Yes. The SN74ACT374DBR maintains identical 20-SSOP packaging (0.209", 5.30mm width), pinout, and electrical specifications. No PCB layout changes are required for direct substitution.

Q: What is the difference between 20-SSOP and 20-TSSOP packages?

A: Both packages contain 20 pins with identical pinout and electrical function. The primary difference is physical width: 20-SSOP measures 0.209" (5.30mm) while 20-TSSOP measures 0.173" (4.40mm). The narrower 20-TSSOP package requires PCB footprint verification before implementation.

Q: Are the Texas Instruments substitutes electrically compatible with the onsemi 74ACT374MSAX?

A: Yes. All listed substitutes maintain the same core electrical specifications: 8-bit D-type flip-flop, positive edge trigger, tri-state non-inverted outputs, 160 MHz clock frequency, 4.5V to 5.5V supply voltage, and -40°C to 85°C operating temperature range.

Q: Why do the Texas Instruments parts show lower quiescent current (4 µA vs. 40 µA)?

A: The quiescent current difference reflects manufacturing process improvements in later production versions. Both values are within acceptable operating parameters for the 74ACT374 logic family.

Q: Which substitute part should be selected for new production designs?

A: The SN74ACT374PWR is recommended for new designs. It is currently active in production status, ROHS3 compliant, and available in both cut tape and Digi-Reel packaging options. For designs with existing PCB layouts using 20-SSOP packages, the SN74ACT374DBR provides direct compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All Texas Instruments substitutes listed are ROHS3 compliant. The original 74ACT374MSAX RoHS status is not specified in the provided data.

Q: What is the propagation delay difference between the main part and substitutes?

A: The 74ACT374MSAX specifies 10 ns maximum propagation delay at 5V with 50pF load. The SN74ACT374DBR achieves 8.5 ns under identical conditions, representing improved performance. The SN74ACT374PW and SN74ACT374PWR maintain the 10 ns specification.