74F377PC Equivalent & Substitute Parts

Part Overview

The 74F377PC is a D-Type flip-flop logic integrated circuit manufactured by onsemi, designed for 8-bit parallel data storage with positive edge triggering. This component operates at a clock frequency of 130 MHz and is housed in a 20-DIP through-hole package. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance, repair, and legacy design support. Equivalent parts must maintain functional compatibility while meeting the same electrical and mechanical specifications.

Substiute Parts

74F377PC

onsemiIn Stock: 317874F377PC Datasheet

Current PartRFQ

SN74F377AN

Texas InstrumentsIn Stock: 2067SN74F377AN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74F377PC are identified based on strict equivalence across the following critical parameters:

• Logic Function: D-Type flip-flop with 8-bit configuration and single element
• Trigger Mechanism: Positive edge triggering
• Output Configuration: Non-inverted outputs
• Package Compatibility: 20-DIP (0.300", 7.62mm) through-hole mounting
• Electrical Specifications: Supply voltage range 4.5V ~ 5.5V, operating temperature 0°C ~ 70°C
• Base Product Number: 74F377 (indicates functional equivalence within the 74F logic family)

The SN74F377AN from Texas Instruments qualifies as a direct substitute based on identical functional classification, package type, and core electrical parameters. Both parts share the same base product number (74F377) and maintain compatibility across all specified mechanical and electrical interfaces.

Parameter Comparison

Engineering Selection Recommendations

The SN74F377AN from Texas Instruments is a functional equivalent to the 74F377PC. Both parts maintain identical package geometry, pin configuration, and core electrical specifications. The SN74F377AN offers the advantage of active product status, ensuring continued availability and supply chain reliability compared to the obsolete 74F377PC.

Differences in clock frequency (125 MHz vs. 130 MHz) and propagation delay (9 ns vs. 7 ns) remain within acceptable tolerance for most 74F logic applications operating at standard TTL clock rates. Quiescent current variation (72 mA vs. 48 mA) should be evaluated in power-sensitive applications.

The SN74F377AN is ROHS3 compliant, providing environmental and regulatory advantages for new designs and system upgrades. Both parts maintain REACH compliance and identical ECCN/HTSUS classifications.

Frequently Asked Questions (FAQ)

Q: Can the SN74F377AN directly replace the 74F377PC without PCB modifications?

A: Yes. Both parts use identical 20-DIP (0.300", 7.62mm) through-hole packaging with matching pin configurations. Direct socket substitution is possible without PCB layout changes.

Q: What are the functional differences between these parts?

A: Both parts implement the same D-Type flip-flop logic with 8-bit configuration and positive edge triggering. Differences in clock frequency (125 MHz vs. 130 MHz) and propagation delay (9 ns vs. 7 ns) are minor and do not affect functional compatibility in standard TTL applications.

Q: Why is the quiescent current higher in the SN74F377AN?

A: The SN74F377AN draws 72 mA compared to 48 mA in the 74F377PC. This difference reflects manufacturing process variations between onsemi and Texas Instruments. For applications with strict power budgets, this parameter should be evaluated during system design.

Q: Is the SN74F377AN suitable for new designs?

A: Yes. The SN74F377AN carries active product status and ROHS3 compliance, making it appropriate for new designs and long-term production runs. The 74F377PC, being obsolete, is not recommended for new applications.

Q: Are there any supply voltage or temperature range limitations?

A: Both parts operate within identical supply voltage (4.5V ~ 5.5V) and temperature ranges (0°C ~ 70°C). No additional constraints apply to substitution based on these parameters.