SN74HC74N-NG Equivalent & Substitute Parts

Part Overview

The SN74HC74N-NG is a dual D-type flip-flop logic integrated circuit manufactured by Texas Instruments. This component functions as a 2-element D-type flip-flop with 1-bit per element, featuring complementary outputs and positive edge triggering. The device is classified as an active product with full RoHS3 compliance.

Substitute parts are identified when components share identical electrical characteristics, functional specifications, and mechanical compatibility within the 74HC logic family. Alternative part numbers may differ in packaging configuration or supplier inventory status while maintaining full functional equivalence.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Series	74HC
Type	D-Type Flip-Flop
Number of Elements	2
Number of Bits per Element	1
Output Type	Complementary
Trigger Type	Positive Edge
Clock Frequency	60 MHz
Max Propagation Delay @ 6V, 50pF	30 ns
Voltage Supply Range	2V to 6V
Current Output High/Low	5.2 mA / 5.2 mA
Quiescent Current (Iq)	4 µA
Input Capacitance	3 pF
Operating Temperature Range	-40°C to +85°C
Package Type	14-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the SN74HC74N-NG is determined by strict equivalence across the following critical parameters:

Functional Parameters: Type (D-Type), number of elements (2), bits per element (1), output configuration (Complementary), and trigger mechanism (Positive Edge) must be identical.

Electrical Parameters: Clock frequency (60 MHz), propagation delay (30 ns @ 6V, 50pF), supply voltage range (2V–6V), output current (5.2 mA), quiescent current (4 µA), and input capacitance (3 pF) must match exactly.

Mechanical Parameters: Package type (14-DIP with 0.300" / 7.62mm pitch) and mounting method (Through Hole) must be identical.

Compliance Parameters: RoHS3 compliance status must be maintained.

Substitute parts within the 74HC series that satisfy all these criteria are considered parametric equivalents regardless of packaging configuration (Tube vs. other formats) or inventory source.

Parameter Comparison

Parameter	SN74HC74N-NG	SN74HC74N
Manufacturer	Texas Instruments	Texas Instruments
Series	74HC	74HC
Type	D-Type Flip-Flop	D-Type Flip-Flop
Number of Elements	2	2
Number of Bits per Element	1	1
Output Type	Complementary	Complementary
Trigger Type	Positive Edge	Positive Edge
Clock Frequency	60 MHz	60 MHz
Max Propagation Delay @ 6V, 50pF	30 ns	30 ns
Voltage Supply Range	2V to 6V	2V to 6V
Current Output High/Low	5.2 mA / 5.2 mA	5.2 mA / 5.2 mA
Quiescent Current (Iq)	4 µA	4 µA
Input Capacitance	3 pF	3 pF
Operating Temperature Range	-40°C to +85°C	-40°C to +85°C
Package Type	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active

Engineering Selection Recommendations

Both the SN74HC74N-NG and SN74HC74N are active products from Texas Instruments with full RoHS3 compliance. The parts are parametrically identical across all electrical, functional, and mechanical specifications.

Selection between these parts should be based on:

Packaging Configuration: SN74HC74N-NG is supplied in standard packaging, while SN74HC74N is supplied in Tube packaging. Tube packaging is suitable for automated assembly processes and high-volume production environments.

Inventory Availability: SN74HC74N maintains higher inventory levels (13,752 pcs) compared to SN74HC74N-NG (966 pcs), making it preferable for applications requiring immediate availability or bulk procurement.

Compliance Status: Both parts maintain identical RoHS3 compliance and are suitable for applications subject to environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can SN74HC74N be used as a direct replacement for SN74HC74N-NG?

A: Yes. Both parts are parametrically equivalent across all electrical, functional, and mechanical specifications. They share identical clock frequency, propagation delay, supply voltage range, output current, and package configuration. The difference lies only in packaging format (Tube vs. standard).

Q: What is the difference between SN74HC74N-NG and SN74HC74N?

A: The primary difference is packaging configuration. SN74HC74N-NG uses standard packaging, while SN74HC74N uses Tube packaging. All electrical and functional parameters are identical. Tube packaging is optimized for automated pick-and-place assembly.

Q: Are these parts compatible with 14-DIP sockets?

A: Yes. Both SN74HC74N-NG and SN74HC74N use the 14-DIP (0.300", 7.62mm) package with Through Hole mounting. They are mechanically compatible with standard 14-pin DIP sockets.

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

A: Both parts operate across -40°C to +85°C. This range covers industrial and commercial temperature specifications.

Q: Are these parts RoHS compliant?

A: Yes. Both SN74HC74N-NG and SN74HC74N are ROHS3 compliant and suitable for applications subject to environmental regulations.

Q: What supply voltage range do these parts support?

A: Both parts operate with supply voltages from 2V to 6V, providing flexibility for various logic system designs.

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