74HC08N AND Gate IC Equivalent & Substitute Parts

Part Overview

The 74HC08N is a 4-channel 2-input AND gate logic IC manufactured by NXP USA Inc. in 14-DIP through-hole packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74HC series represents a standard logic family with multiple qualified manufacturers offering compatible alternatives that maintain functional and electrical equivalence.

Key Parameters

Parameter	Value
Logic Type	AND Gate
Number of Circuits	4
Number of Inputs	2
Voltage Supply Range	2V ~ 6V
Quiescent Current (Max)	2 µA
Output Current (High/Low)	5.2mA / 5.2mA
Input Logic Level Low	0.5V ~ 1.8V
Input Logic Level High	1.5V ~ 4.2V
Propagation Delay (Max)	15ns @ 6V, 50pF
Operating Temperature	-40°C ~ 125°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 74HC08N is determined by strict equivalence across the following critical parameters:

Logic function: 4-channel 2-input AND gate
Supply voltage range: 2V ~ 6V minimum
Package type: 14-DIP through-hole form factor
Mounting compatibility: Through-hole PCB mounting
Electrical characteristics: Input/output logic levels and current ratings
Compliance: RoHS3 compliance and REACH unaffected status

All substitute parts listed maintain these core parameters within acceptable engineering tolerances. Variations in quiescent current, propagation delay, and operating temperature ranges are documented to enable informed selection based on specific application requirements.

Parameter Comparison

Parameter	74HC08N (NXP)	CD74HC08E (TI)	SN74HC08N (TI)	TC74HC08APF (Toshiba)
Manufacturer	NXP USA Inc.	Texas Instruments	Texas Instruments	Toshiba Semiconductor
Product Status	Obsolete	Active	Active	Active
Logic Type	AND Gate	AND Gate	AND Gate	AND Gate
Circuits / Inputs	4 / 2	4 / 2	4 / 2	4 / 2
Voltage Supply	2V ~ 6V	2V ~ 6V	2V ~ 6V	2V ~ 6V
Quiescent Current (Max)	2 µA	2 µA	2 µA	1 µA
Output Current (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
Propagation Delay (Max)	15ns @ 6V, 50pF	15ns @ 6V, 50pF	17ns @ 6V, 50pF	13ns @ 6V, 50pF
Operating Temperature	-40°C ~ 125°C	-55°C ~ 125°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)	14-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All three substitute parts—CD74HC08E, SN74HC08N, and TC74HC08APF—are active production components from established manufacturers with full RoHS3 compliance and REACH unaffected status. Selection among these alternatives should be based on the following criteria:

CD74HC08E (Texas Instruments): Offers extended operating temperature range (-55°C to 125°C) and matches the original 15ns propagation delay specification. Suitable for applications requiring the widest temperature coverage.

SN74HC08N (Texas Instruments): Maintains the original -40°C to 125°C operating range with 17ns propagation delay. Represents a direct functional equivalent with minimal performance variation.

TC74HC08APF (Toshiba Semiconductor): Delivers the fastest propagation delay (13ns) and lowest quiescent current (1 µA), making it optimal for power-sensitive or timing-critical applications. Operating temperature range is -40°C to 85°C.

All parts maintain identical logic function, pin configuration, and electrical interface characteristics. Selection should prioritize availability, lead time, and application-specific temperature and power requirements.

Frequently Asked Questions (FAQ)

Q: Can I directly replace 74HC08N with any of these substitute parts?

A: Yes. All substitute parts maintain identical logic function (4-channel 2-input AND gate), pin configuration (14-DIP), and core electrical characteristics (supply voltage 2V–6V, input/output logic levels, output current ratings). Physical and functional compatibility is assured.

Q: What is the difference in propagation delay between these parts?

A: Propagation delay varies slightly: 74HC08N and CD74HC08E specify 15ns, SN74HC08N specifies 17ns, and TC74HC08APF specifies 13ns (all at 6V, 50pF load). For timing-critical circuits, TC74HC08APF offers the fastest response. For applications with relaxed timing requirements, all parts are interchangeable.

Q: Are there temperature range differences I should consider?

A: Yes. CD74HC08E operates from -55°C to 125°C (widest range), while 74HC08N, SN74HC08N, and TC74HC08APF operate from -40°C to 125°C, -40°C to 85°C, and -40°C to 85°C respectively. Select based on your application's thermal environment.

Q: Do all parts have the same quiescent current specification?

A: No. 74HC08N, CD74HC08E, and SN74HC08N specify 2 µA maximum quiescent current, while TC74HC08APF specifies 1 µA. For battery-powered or ultra-low-power applications, TC74HC08APF provides superior power efficiency.

Q: Are all parts RoHS3 compliant?

A: Yes. All listed parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for commercial and industrial applications.

Q: What packaging options are available?

A: All parts are supplied in 14-DIP through-hole packaging with identical physical dimensions (0.300", 7.62mm). No package variants are listed among these substitutes.

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