74HC04N Equivalent & Substitute Parts

Part Overview

The 74HC04N is a 6-channel inverter logic IC manufactured by NXP USA Inc. in a 14-DIP through-hole package. This component performs basic logic inversion operations across six independent channels, each with a single input. The part is classified as obsolete, making equivalent substitute parts necessary for new designs or when original stock becomes unavailable. Substitute parts must maintain functional equivalence through matching logic type, channel configuration, and electrical performance within specified operating ranges.

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 @ 6V, 50pF	14ns
Operating Temperature	-40°C ~ 125°C
Mounting Type	Through Hole
Package / Case	14-DIP (0.300", 7.62mm)
Base Product Number	74HC04

Substitute Part Grouping Explanation

Substitution eligibility for the 74HC04N is determined by strict adherence to the following parameters:

Logic Type: Must be Inverter
Number of Circuits: Must be 6
Number of Inputs: Must be 1
Voltage - Supply: Must support 2V ~ 6V range
Current - Output High, Low: Must be 5.2mA, 5.2mA
Input Logic Level - Low: Must be 0.5V ~ 1.8V
Input Logic Level - High: Must be 1.5V ~ 4.2V
Mounting Type: Must be Through Hole
Package / Case: Must be 14-DIP (0.300", 7.62mm)
Base Product Number: Must be 74HC04

All identified substitute parts meet these core requirements. Variations in propagation delay, quiescent current, operating temperature range, product status, and compliance certifications do not disqualify substitution but are documented for engineering selection purposes.

Parameter Comparison

Parameter	74HC04N (NXP)	CD74HC04E (Harris)	SN74HC04N (TI)	TC74HC04APF (Toshiba)
Manufacturer	NXP USA Inc.	Harris Corporation	Texas Instruments	Toshiba Semiconductor and Storage
Logic Type	Inverter	Inverter	Inverter	Inverter
Number of Circuits	6	6	6	6
Number of Inputs	1	1	1	1
Voltage - Supply	2V ~ 6V	2V ~ 6V	2V ~ 6V	2V ~ 6V
Current - Quiescent (Max)	2 µA	2 µA	2 µA	1 µA
Current - Output High, Low	5.2mA, 5.2mA	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	0.5V ~ 1.8V
Input Logic Level - High	1.5V ~ 4.2V	1.5V ~ 4.2V	1.5V ~ 4.2V	1.5V ~ 4.2V
Max Propagation Delay @ 6V, 50pF	14ns	14ns	16ns	13ns
Operating Temperature	-40°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)
Product Status	Obsolete	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

SN74HC04N (Texas Instruments) is the manufacturer-recommended substitute. This part maintains active product status, ensuring long-term availability and supply chain stability. It carries ROHS3 compliance certification, meeting modern environmental and regulatory requirements. The propagation delay of 16ns at 6V and 50pF load remains within acceptable performance margins for standard logic applications. Operating temperature range of -40°C to 85°C covers typical industrial and commercial environments.

TC74HC04APF (Toshiba Semiconductor and Storage) offers superior electrical performance with the lowest propagation delay (13ns) and reduced quiescent current (1 µA). This part also maintains active product status and ROHS3 compliance. The operating temperature range of -40°C to 85°C is suitable for most applications. This option is preferred when lower power consumption or faster switching characteristics are beneficial.

CD74HC04E (Harris Corporation) provides functional equivalence but carries obsolete product status and lacks RoHS compliance. This part should be selected only when existing inventory must be utilized or when RoHS compliance is not a design requirement.

Frequently Asked Questions (FAQ)

Q: Can the 74HC04N be directly replaced with any of these substitute parts?

A: Yes. All listed substitute parts maintain identical logic type (6-channel inverter), electrical specifications for supply voltage, input/output levels, and output current, and package configuration (14-DIP through-hole). Direct pin-for-pin substitution is functionally valid.

Q: What are the differences in propagation delay between these parts?

A: Propagation delay varies slightly: 74HC04N and CD74HC04E at 14ns, TC74HC04APF at 13ns, and SN74HC04N at 16ns, all measured at 6V with 50pF load. These differences are negligible for most logic applications and do not affect functional compatibility.

Q: Which substitute is best for new designs?

A: SN74HC04N (Texas Instruments) is recommended for new designs due to active product status and ROHS3 compliance. TC74HC04APF (Toshiba) is an alternative offering improved performance characteristics.

Q: Are there temperature range differences I should consider?

A: The original 74HC04N operates from -40°C to 125°C. CD74HC04E extends to -55°C minimum. SN74HC04N and TC74HC04APF operate from -40°C to 85°C. Select based on your application's temperature requirements.

Q: What is the significance of RoHS compliance?

A: ROHS3-compliant parts (SN74HC04N and TC74HC04APF) meet European environmental regulations and are required for many commercial and industrial applications. CD74HC04E is non-compliant and may not be suitable for regulated markets.

Q: Can I use these parts interchangeably in existing assemblies?

A: Yes. All substitute parts share identical pinout, package dimensions (14-DIP, 0.300" spacing), and electrical operating characteristics. No circuit modifications are required for substitution.

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