SN74HC74NG4 Equivalent & Substitute Parts

Part Overview

The SN74HC74NG4 is a dual D-type flip-flop logic integrated circuit manufactured by Texas Instruments, housed in a 14-DIP package. This component functions as a Set/Reset flip-flop with complementary outputs, operating across a 2V to 6V supply voltage range with a maximum clock frequency of 60 MHz. The SN74HC74NG4 is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and component procurement.

Substiute Parts

SN74HC74NG4

Texas InstrumentsIn Stock: 1111SN74HC74NG4 Datasheet

Current PartRFQ

SN74HC74N

Texas InstrumentsIn Stock: 13841SN74HC74N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74HC74NG4 is determined by strict equivalence across the following critical parameters:

• Functional Type: D-Type flip-flop with dual elements and complementary outputs
• Electrical Specifications: Clock frequency (60 MHz), propagation delay (30 ns @ 6V, 50pF), supply voltage range (2V ~ 6V), output current (5.2 mA), and quiescent current (4 µA)
• Trigger Mechanism: Positive edge triggering
• Package Configuration: 14-DIP through-hole mounting with 0.300" (7.62mm) pitch
• Compliance Standards: ROHS3 compliance and REACH unaffected status

The SN74HC74N qualifies as a direct manufacturer-recommended substitute, maintaining identical electrical and mechanical specifications while differing only in product status (Active vs. Discontinued) and packaging format (Tube vs. standard).

Parameter Comparison

Engineering Selection Recommendations

The SN74HC74N is the manufacturer-recommended substitute for the discontinued SN74HC74NG4. Both components are manufactured by Texas Instruments and maintain identical electrical performance specifications, operating parameters, and package dimensions. The SN74HC74N carries Active product status, ensuring continued availability and supply chain support. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for current manufacturing standards. The primary distinction is packaging format: the SN74HC74N is supplied in Tube packaging, whereas the original part carried standard packaging. Pin configuration and electrical behavior remain unchanged, enabling direct circuit board substitution without design modification.

Frequently Asked Questions (FAQ)

Q: Can the SN74HC74N be used as a direct replacement for the SN74HC74NG4?

A: Yes. The SN74HC74N is the manufacturer-recommended substitute. Both parts share identical electrical specifications, clock frequency, propagation delay, supply voltage range, output current ratings, and 14-DIP package configuration. Pin-for-pin compatibility is maintained.

Q: What is the difference between the SN74HC74NG4 and SN74HC74N?

A: The primary differences are product status and packaging format. The SN74HC74NG4 is discontinued at DiGi Electronics, while the SN74HC74N maintains Active status. The SN74HC74N is supplied in Tube packaging. All electrical and mechanical specifications are identical.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both the SN74HC74NG4 and SN74HC74N are ROHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic component manufacturing and use.

Q: Does the 14-DIP package dimension remain the same?

A: Yes. Both parts use the 14-DIP (0.300", 7.62mm) through-hole package with identical pin spacing and mechanical dimensions, ensuring compatibility with existing PCB layouts.

Q: What is the operating temperature range for these flip-flops?

A: Both parts operate across -40°C to 85°C (TA), supporting industrial and commercial temperature environments.

Q: Is the quiescent current specification the same for both parts?

A: Yes. Both the SN74HC74NG4 and SN74HC74N draw 4 µA quiescent current, maintaining identical power consumption characteristics in standby conditions.