74F74PC Equivalent & Substitute Parts

Part Overview

The 74F74PC is a dual D-type flip-flop logic integrated circuit manufactured by onsemi, housed in a 14-DIP through-hole package. This component functions as a 2-element D-type flip-flop with complementary outputs, set/preset and reset capabilities, and positive edge triggering. The 74F74PC is classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance, repair, and legacy product support.

Substiute Parts

74F74PC

onsemiIn Stock: 228774F74PC Datasheet

Current PartRFQ

SN74F74N

Texas InstrumentsIn Stock: 2162SN74F74N Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74F74PC is determined by strict equivalence across the following critical parameters:

• Functional type: D-type flip-flop with 2 elements, 1 bit per element
• Output configuration: Complementary outputs
• Control functions: Set/Preset and Reset capability
• Trigger mechanism: Positive edge triggering
• Electrical specifications: Supply voltage 4.5V ~ 5.5V, output drive capability (1 mA high, 20 mA low)
• Package form factor: 14-DIP through-hole configuration with 0.300" (7.62mm) pitch
• Pin compatibility: Identical pinout required for direct substitution

The SN74F74N from Texas Instruments meets all these criteria and is classified as an active product, providing a direct functional and physical replacement for the obsolete 74F74PC.

Parameter Comparison

Engineering Selection Recommendations

The SN74F74N is a direct functional equivalent to the 74F74PC and is suitable for substitution in applications requiring a dual D-type flip-flop with complementary outputs and positive edge triggering. The SN74F74N maintains identical electrical specifications within the 4.5V to 5.5V supply range and supports the same operating temperature window of 0°C to 70°C.

The SN74F74N offers the advantage of active product status, ensuring continued availability and supply chain reliability. The part is ROHS3 compliant, meeting modern environmental and regulatory requirements. Both parts share REACH Unaffected status, confirming compliance with chemical substance regulations.

The SN74F74N exhibits slightly higher clock frequency capability (145 MHz versus 125 MHz) and marginally longer propagation delay (8 ns versus 6.8 ns), both of which remain within acceptable tolerances for standard logic applications. The identical 14-DIP through-hole package and pinout enable direct board-level replacement without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the SN74F74N replace the 74F74PC in existing designs?

A: Yes. The SN74F74N is a direct substitute. Both parts are dual D-type flip-flops with identical pinouts, package form factors (14-DIP), and electrical specifications including supply voltage range (4.5V ~ 5.5V), output drive capability, and operating temperature range (0°C ~ 70°C).

Q: What are the key differences between these parts?

A: The primary differences are product status and compliance certifications. The 74F74PC is obsolete, while the SN74F74N is an active product. The SN74F74N is ROHS3 compliant. Clock frequency and propagation delay specifications differ slightly but remain functionally equivalent for standard applications.

Q: Are there any package or pinout considerations?

A: Both parts use identical 14-DIP through-hole packaging with 0.300" (7.62mm) pitch. No board layout or socket modifications are required for substitution.

Q: Does the SN74F74N meet regulatory requirements?

A: Yes. The SN74F74N is ROHS3 compliant and REACH Unaffected, meeting current environmental and chemical substance regulations.

Q: What is the basis for substitution compatibility?

A: Substitution is based on functional equivalence across D-type flip-flop architecture, element count (2), bit configuration (1 bit per element), complementary output type, set/preset and reset functions, positive edge triggering, identical electrical specifications, and matching 14-DIP through-hole package form factor.