74ACT374PC Equivalent & Substitute Parts

Part Overview

The 74ACT374PC is a D-Type flip-flop logic integrated circuit featuring 1 element with 8-bit capacity, designed for positive edge triggering applications. Manufactured by onsemi in a 20-DIP through-hole package, this component operates across a 4.5V to 5.5V supply range with tri-state, non-inverted outputs. The part is currently classified as obsolete, making equivalent and substitute components necessary for ongoing design support and procurement continuity.

Substiute Parts

74ACT374PC

onsemiIn Stock: 247674ACT374PC Datasheet

Current PartRFQ

SN74ACT574N

Texas InstrumentsIn Stock: 1629SN74ACT574N Datasheet

DirectRFQ

CD74ACT374E

Harris CorporationIn Stock: 1825CD74ACT374E Datasheet

SimilarRFQ

SN74ACT374N

Texas InstrumentsIn Stock: 1130SN74ACT374N Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74ACT374PC is determined by the following critical parameters: D-Type flip-flop function with 1 element and 8-bit capacity, positive edge trigger configuration, tri-state non-inverted output topology, 20-DIP through-hole package format, 4.5V to 5.5V supply voltage compatibility, and operating temperature range of -40°C to 85°C.

Substitute parts are categorized into three groups:

Direct Manufacturer Equivalent (SN74ACT574N): Functionally compatible with identical package, trigger type, output configuration, and supply voltage. Meets all mechanical and electrical interface requirements.

Similar Manufacturer Part (CD74ACT374E): Shares core D-Type flip-flop architecture, 8-bit configuration, and package format. Operates within compatible voltage and temperature ranges with minor parameter variations.

Parametric Equivalent (SN74ACT374N): Matches the main part across all critical electrical and mechanical specifications, including clock frequency, propagation delay, and output current ratings.

Parameter Comparison

Engineering Selection Recommendations

SN74ACT574N (Texas Instruments): Active product status with ROHS3 compliance and REACH unaffected certification. Lower quiescent current (4 µA) compared to the original part. Clock frequency reduced to 110 MHz with 11 ns propagation delay. Suitable for applications where reduced power consumption is acceptable and timing margins accommodate the 1 ns additional delay.

CD74ACT374E (Harris Corporation): Obsolete status matching the original part. Extended operating temperature range (-55°C to 125°C) provides broader environmental coverage. Higher input capacitance (10 pF) and quiescent current (8 µA) require circuit evaluation. RoHS non-compliant status may restrict use in regulated applications.

SN74ACT374N (Texas Instruments): Active product status with ROHS3 compliance and REACH unaffected certification. Parametric match across clock frequency (160 MHz) and propagation delay (10 ns). Reduced quiescent current (4 µA) with identical input capacitance (4.5 pF). Direct electrical and mechanical compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can SN74ACT574N replace 74ACT374PC in all applications?

A: SN74ACT574N maintains functional compatibility through identical package, trigger type, output configuration, and supply voltage. However, the reduced clock frequency (110 MHz versus 160 MHz) and increased propagation delay (11 ns versus 10 ns) require verification against circuit timing requirements. Lower quiescent current provides power consumption benefits.

Q: What is the primary difference between SN74ACT574N and SN74ACT374N?

A: Both parts are manufactured by Texas Instruments with active product status. SN74ACT374N matches the original 74ACT374PC across all critical electrical parameters including 160 MHz clock frequency and 10 ns propagation delay. SN74ACT574N operates at reduced clock frequency (110 MHz) with 11 ns propagation delay but offers lower quiescent current consumption.

Q: Is CD74ACT374E suitable for new designs?

A: CD74ACT374E carries obsolete product status and RoHS non-compliance, limiting suitability for new designs subject to regulatory requirements. The extended operating temperature range (-55°C to 125°C) may benefit specific applications, but active alternatives with compliance certifications are preferred.

Q: Are all substitute parts pin-compatible with 74ACT374PC?

A: All substitute parts utilize the 20-DIP (0.300", 7.62mm) through-hole package with identical pin configuration, enabling direct mechanical and electrical substitution without PCB modification.

Q: Which substitute part offers the best compliance profile?

A: Both SN74ACT574N and SN74ACT374N from Texas Instruments carry active product status with ROHS3 compliance and REACH unaffected certification. SN74ACT374N provides superior electrical parameter matching to the original specification.