74HC08DR2G AND Gate IC Equivalent & Substitute Parts

Part Overview

The 74HC08DR2G is a 4-channel 2-input AND gate logic IC manufactured by onsemi in 14-SOIC surface mount packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74HC08 series represents a standard logic gate function across multiple manufacturers, with several active alternatives available that maintain electrical and mechanical compatibility.

Key Parameters

Parameter	Specification
Logic Type	AND Gate
Number of Circuits	4
Number of Inputs	2
Voltage Supply Range	2V to 6V
Current - Quiescent (Max)	2 µA
Current - Output High/Low	5.2 mA / 5.2 mA
Input Logic Level - Low	0.5V to 1.8V
Input Logic Level - High	1.5V to 4.2V
Max Propagation Delay @ 6V, 50pF	13 ns
Operating Temperature Range	-55°C to 125°C
Mounting Type	Surface Mount
Package	14-SOIC (0.154", 3.90mm Width)
Base Product Number	74HC08
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74HC08DR2G is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Logic type: AND Gate with 4 channels, 2 inputs per channel
Supply voltage range: 2V to 6V minimum
Output current capability: 5.2 mA minimum for both high and low states
Input logic thresholds: Low 0.5V–1.8V, High 1.5V–4.2V
Package type: 14-SOIC surface mount form factor
Propagation delay: 13–20 ns @ 6V, 50pF load (acceptable range for logic gate substitution)
Operating temperature: Minimum -40°C to 125°C (extended range preferred for -55°C to 125°C applications)

Substitute parts are grouped into three categories based on these parameters:

Category 1: Direct Parametric Equivalents – Identical electrical specifications and temperature range (-55°C to 125°C), same package, active product status.

Category 2: Functional Equivalents – Identical logic function and package, minor variations in propagation delay (15–20 ns) or temperature range (-40°C to 125°C), active product status.

Category 3: Compatible Alternatives – Meet all critical electrical parameters and package requirements, may have different product status or compliance certifications.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage Supply	Quiescent Current (Max)	Output Current	Propagation Delay @ 6V, 50pF	Operating Temp Range	Package	RoHS Status
74HC08DR2G	onsemi	Obsolete	2V–6V	2 µA	5.2 mA	13 ns	-55°C to 125°C	14-SOIC	REACH Unaffected
MC74HC08ADR2G	onsemi	Active	2V–6V	1 µA	5.2 mA	13 ns	-55°C to 125°C	14-SOIC	ROHS3 Compliant
CD74HC08M96	Texas Instruments	Active	2V–6V	2 µA	5.2 mA	15 ns	-55°C to 125°C	14-SOIC	ROHS3 Compliant
CD74HC08MT	Texas Instruments	Discontinued at DiGi Electronics	2V–6V	2 µA	5.2 mA	15 ns	-55°C to 125°C	14-SOIC	ROHS3 Compliant
CD74HC08QM96Q1	Texas Instruments	Active	2V–6V	2 µA	5.2 mA	15 ns	-40°C to 125°C	14-SOIC	ROHS3 Compliant
CD74HC08QM96EP	Texas Instruments	Active	2V–6V	2 µA	5.2 mA	15 ns	-40°C to 125°C	14-SOIC	ROHS3 Compliant
74HC08D,653	Nexperia USA Inc.	Active	2V–6V	2 µA	5.2 mA	15 ns	-40°C to 125°C	14-SOIC	ROHS3 Compliant
74HC08D-Q100,118	Nexperia USA Inc.	Active	2V–6V	2 µA	5.2 mA	15 ns	-40°C to 125°C	14-SOIC	ROHS3 Compliant
MM74HC08M	Fairchild Semiconductor	Active	2V–6V	2 µA	5.2 mA	20 ns	-40°C to 85°C	14-SOIC	Not specified
MM74HC08MX	Fairchild Semiconductor	Active	2V–6V	2 µA	5.2 mA	20 ns	-40°C to 85°C	14-SOIC	Not specified
CD74HC08M	Harris Corporation	Obsolete	2V–6V	2 µA	5.2 mA	15 ns	-55°C to 125°C	14-SOIC	RoHS non-compliant

Engineering Selection Recommendations

Primary Recommendation: MC74HC08ADR2G (onsemi)

The MC74HC08ADR2G is the optimal direct replacement for the obsolete 74HC08DR2G. Both parts are manufactured by onsemi and share identical electrical specifications, temperature range (-55°C to 125°C), and 14-SOIC packaging. The MC74HC08ADR2G is currently active with ROHS3 compliance and improved quiescent current performance (1 µA vs. 2 µA). This part maintains full backward compatibility and requires no design modifications.

Secondary Recommendations:

CD74HC08M96 or CD74HC08MT (Texas Instruments) – Active products with identical temperature range (-55°C to 125°C) and 14-SOIC package. Propagation delay is 15 ns (2 ns slower than original), which remains within acceptable logic gate performance margins. Both are ROHS3 compliant. CD74HC08M96 is available in Cut Tape & Digi-Reel packaging; CD74HC08MT is discontinued at DiGi Electronics but may be available through alternative distributors.

CD74HC08QM96Q1 (Texas Instruments, AEC-Q100 Qualified) – Active product suitable for automotive applications. Operating temperature range is -40°C to 125°C (does not extend to -55°C). Use only if application temperature minimum is -40°C or higher. ROHS3 compliant with 15 ns propagation delay.

74HC08D,653 or 74HC08D-Q100,118 (Nexperia USA Inc.) – Active products with 15 ns propagation delay and ROHS3 compliance. Operating temperature range is -40°C to 125°C. The 74HC08D-Q100,118 variant includes AEC-Q100 automotive qualification. Both are suitable for applications not requiring -55°C operation.

Not Recommended:

MM74HC08M and MM74HC08MX (Fairchild Semiconductor) have reduced operating temperature range (-40°C to 85°C) and slower propagation delay (20 ns). Use only if application constraints permit these limitations.

CD74HC08M (Harris Corporation) is obsolete and RoHS non-compliant. Avoid for new designs.

Frequently Asked Questions (FAQ)

Q: Can I use MC74HC08ADR2G as a direct drop-in replacement for 74HC08DR2G?

A: Yes. The MC74HC08ADR2G is a direct replacement with identical electrical specifications, temperature range, and 14-SOIC package. No circuit modifications are required. The part is currently active and ROHS3 compliant.

Q: What is the difference between 14-SOIC and 14-SO packaging?

A: Both designations refer to the same 14-pin surface mount outline with 0.154" (3.90mm) width. The terms are used interchangeably by different manufacturers. All substitute parts listed use compatible 14-SOIC/14-SO packages suitable for the same PCB footprint.

Q: Why do some parts have 15 ns or 20 ns propagation delay instead of 13 ns?

A: Propagation delay variation within 13–20 ns at 6V with 50pF load is normal across different manufacturers and process variations. For standard logic gate applications, delays up to 20 ns remain functionally equivalent. If timing-critical applications require 13 ns maximum, select MC74HC08ADR2G, CD74HC08M96, or CD74HC08MT.

Q: Can I use parts with -40°C to 125°C temperature range in place of -55°C to 125°C?

A: Only if your application does not require operation below -40°C. If the system must function at -55°C or lower, use MC74HC08ADR2G, CD74HC08M96, CD74HC08MT, or CD74HC08M (obsolete). Parts with -40°C minimum include MM74HC08M, MM74HC08MX, CD74HC08QM96Q1, 74HC08D,653, and 74HC08D-Q100,118.

Q: What does AEC-Q100 qualification mean?

A: AEC-Q100 is an automotive industry standard qualification. Parts bearing this designation (CD74HC08QM96Q1 and 74HC08D-Q100,118) have undergone additional reliability testing for automotive applications. Use these variants if your design requires automotive-grade components.

Q: Are all substitute parts ROHS3 compliant?

A: Most active substitute parts are ROHS3 compliant. CD74HC08M (Harris Corporation, obsolete) is RoHS non-compliant. Fairchild Semiconductor parts (MM74HC08M, MM74HC08MX) do not specify RoHS status. For new designs requiring RoHS compliance, select from onsemi, Texas Instruments, or Nexperia active products.

Q: What is the difference between Cut Tape & Digi-Reel and Tape & Reel packaging?

A: Both are reel-based packaging formats for automated assembly. Cut Tape & Digi-Reel allows for smaller quantity orders with individual part access. Tape & Reel is standard continuous reel format. Both are compatible with standard pick-and-place equipment. Packaging choice depends on procurement volume and assembly requirements.

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