SN74HC04NG4 Equivalent & Substitute Parts

Part Overview

The SN74HC04NG4 is a 6-channel inverter logic IC manufactured by Texas Instruments in a 14-DIP package. This part is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design and production requirements. The SN74HC04NG4 operates across a 2V to 6V supply voltage range and is suitable for digital logic applications requiring signal inversion with standard propagation delay characteristics.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Voltage - Supply	2V ~ 6V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	5.2mA, 5.2mA
Input Logic Level - Low	0.5V ~ 1.8V
Input Logic Level - High	1.5V ~ 4.2V
Max Propagation Delay @ V, Max CL	16ns @ 6V, 50pF
Operating Temperature	-40°C ~ 85°C
Package / Case	14-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SN74HC04NG4 are qualified based on the following criteria:

Functional Equivalence: All substitute parts must be 6-channel inverter logic ICs with identical circuit count and input configuration.

Electrical Compatibility: Supply voltage range (2V ~ 6V), input logic levels, and output current specifications must match or exceed the original part requirements.

Package Compatibility: All substitutes must use the 14-DIP package format with identical pin spacing (0.300", 7.62mm) for direct board-level replacement.

Thermal and Environmental: Operating temperature range of -40°C to 85°C and compliance with RoHS3 standards are required.

Series Alignment: All qualified substitutes belong to the 74HC logic family, ensuring consistent timing and electrical characteristics within the specified propagation delay window.

Parameter Comparison

Parameter	SN74HC04NG4 (Main)	SN74HC04N (Substitute)	TC74HC04APF (Substitute)
Manufacturer	Texas Instruments	Texas Instruments	Toshiba Semiconductor and Storage
Logic Type	Inverter	Inverter	Inverter
Number of Circuits	6	6	6
Number of Inputs	1	1	1
Voltage - Supply	2V ~ 6V	2V ~ 6V	2V ~ 6V
Current - Quiescent (Max)	2 µA	2 µA	1 µA
Current - Output High, Low	5.2mA, 5.2mA	5.2mA, 5.2mA	5.2mA, 5.2mA
Input Logic Level - Low	0.5V ~ 1.8V	0.5V ~ 1.8V	0.5V ~ 1.8V
Input Logic Level - High	1.5V ~ 4.2V	1.5V ~ 4.2V	1.5V ~ 4.2V
Max Propagation Delay @ V, Max CL	16ns @ 6V, 50pF	16ns @ 6V, 50pF	13ns @ 6V, 50pF
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Product Status	Discontinued at DiGi Electronics	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

SN74HC04N (Texas Instruments): This part is the manufacturer-recommended direct substitute. It maintains identical electrical specifications and propagation delay characteristics to the SN74HC04NG4. Product status is active with established supply availability. This option provides continuity with the original design without performance trade-offs.

TC74HC04APF (Toshiba Semiconductor and Storage): This substitute offers improved performance characteristics, including reduced quiescent current (1 µA versus 2 µA) and faster propagation delay (13ns versus 16ns at 6V, 50pF). All electrical parameters remain within compatible ranges. Product status is active. This option is suitable for applications where lower power consumption or faster switching speed provides design benefits.

Both substitutes are ROHS3 compliant and operate across the full -40°C to 85°C temperature range, ensuring regulatory and environmental compatibility with the original part.

Frequently Asked Questions (FAQ)

Q: Can SN74HC04N be used as a direct replacement for SN74HC04NG4?

A: Yes. The SN74HC04N is electrically and mechanically identical to the SN74HC04NG4. Both parts share the same 14-DIP package, supply voltage range, input/output specifications, and propagation delay characteristics. The primary difference is product status: SN74HC04N is currently active in production.

Q: What is the difference between SN74HC04N and TC74HC04APF?

A: Both parts are functionally equivalent 6-channel inverter ICs in 14-DIP packages. The TC74HC04APF offers lower quiescent current (1 µA versus 2 µA) and faster propagation delay (13ns versus 16ns). All other electrical parameters are identical. The choice depends on whether the design benefits from reduced power consumption or faster switching speed.

Q: Are these parts pin-compatible?

A: Yes. All three parts use the 14-DIP package with identical pin spacing (0.300", 7.62mm) and pinout configuration. Direct board-level substitution is possible without layout modifications.

Q: Do these substitutes meet RoHS compliance requirements?

A: Yes. Both SN74HC04N and TC74HC04APF are ROHS3 compliant, matching the compliance status of the original SN74HC04NG4.

Q: What is the operating temperature range for these parts?

A: All three parts operate across -40°C to 85°C, ensuring compatibility across industrial and commercial temperature specifications.

Q: Can I use TC74HC04APF if my design requires the exact propagation delay of the original part?

A: The TC74HC04APF has a faster propagation delay (13ns versus 16ns). If your design timing is dependent on the original 16ns specification, use SN74HC04N instead to maintain identical timing characteristics.

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