CD74HC08M AND Gate IC Equivalent & Substitute Parts

Part Overview

The CD74HC08M is a 4-channel 2-input AND gate logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This part is discontinued at DiGi Electronics but remains available through inventory stock. The CD74HC08M operates across a 2V to 6V supply voltage range with low quiescent current and is suitable for general-purpose logic applications requiring AND gate functionality. Due to its discontinued status, equivalent substitute parts from active manufacturers are necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Logic Type	AND Gate
Number of Circuits	4
Number of Inputs	2
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	15ns
Operating Temperature	-55°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the CD74HC08M is determined by strict equivalence across the following critical parameters:

Core Functional Requirements:

Logic Type: AND Gate (4-channel, 2-input configuration)
Voltage Supply Range: 2V ~ 6V minimum
Input/Output Logic Levels: 0.5V ~ 1.8V (Low), 1.5V ~ 4.2V (High)
Output Current Capability: 5.2mA minimum for both High and Low states
Mounting Type: Surface Mount
Package Compatibility: 14-SOIC or 14-SO footprint

Performance Considerations:

Propagation Delay: Substitute parts with ≤20ns @ 6V, 50pF are functionally equivalent
Quiescent Current: Substitute parts with ≤20 µA are acceptable
Operating Temperature: Substitute parts must support minimum -40°C ~ 85°C range; extended range (-55°C ~ 125°C) provides additional margin

Compliance & Certification:

RoHS3 Compliance required
MSL Level 1 preferred for unlimited moisture sensitivity

All listed substitute parts meet these criteria and are sourced from active manufacturers with current production status.

Parameter Comparison

Part Number	Manufacturer	Product Status	Quiescent Current (Max)	Propagation Delay @ 6V, 50pF	Operating Temperature	Packaging	Package / Case
CD74HC08M	Texas Instruments	Discontinued	2 µA	15ns	-55°C ~ 125°C	Tube	14-SOIC
CD74HC08M96	Texas Instruments	Active	2 µA	15ns	-55°C ~ 125°C	Cut Tape & Digi-Reel	14-SOIC
SN74HC08DR	Texas Instruments	Active	2 µA	17ns	-40°C ~ 85°C	Cut Tape & Digi-Reel	14-SOIC
MC74HC08ADR2G	onsemi	Active	1 µA	13ns	-55°C ~ 125°C	Cut Tape & Digi-Reel	14-SOIC
MM74HC08M	Fairchild Semiconductor	Active	2 µA	20ns	-40°C ~ 85°C	Tube	14-SOIC
74HC08D	Toshiba Semiconductor and Storage	Active	1 µA	13ns	-40°C ~ 125°C	Cut Tape & Digi-Reel	14-SOIC
74HC08D,653	Nexperia USA Inc.	Active	2 µA	15ns	-40°C ~ 125°C	Cut Tape & Digi-Reel	14-SO
74HC08D-Q100,118	Nexperia USA Inc.	Active	2 µA	15ns	-40°C ~ 125°C	Tape & Reel	14-SO
74HC08S14-13	Diodes Incorporated	Active	20 µA	15ns	-40°C ~ 125°C	Tape & Reel	14-SO
MC74HC08ADG	onsemi	Active	1 µA	13ns	-55°C ~ 125°C	Tube	14-SOIC
MM74HC08MX	Fairchild Semiconductor	Active	2 µA	20ns	-40°C ~ 85°C	Tube	14-SOIC

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

CD74HC08M96 is the direct equivalent from Texas Instruments with identical electrical specifications and extended temperature range. This part maintains the same manufacturer lineage and is available in active production status with high inventory levels.

MC74HC08ADR2G and 74HC08D from onsemi and Toshiba respectively offer superior performance characteristics with lower quiescent current (1 µA) and faster propagation delay (13ns), while maintaining full compatibility across all critical parameters and extended operating temperature range (-55°C ~ 125°C).

MC74HC08ADG from onsemi provides tube packaging equivalent to the original CD74HC08M with identical electrical performance and extended temperature range, suitable for direct replacement in existing assembly processes.

Secondary Substitutes (Acceptable with Design Verification):

SN74HC08DR from Texas Instruments operates within the standard industrial temperature range (-40°C ~ 85°C) with slightly elevated propagation delay (17ns). This part is suitable for applications not requiring extended low-temperature operation.

74HC08D,653 and 74HC08D-Q100,118 from Nexperia USA Inc. provide equivalent performance with automotive-grade qualification (AEC-Q100) for the latter, suitable for automotive and harsh-environment applications.

MM74HC08M and MM74HC08MX from Fairchild Semiconductor operate at the upper propagation delay limit (20ns) within the acceptable range and are restricted to standard industrial temperature range (-40°C ~ 85°C).

74HC08S14-13 from Diodes Incorporated exhibits elevated quiescent current (20 µA) at the maximum allowable threshold and is suitable only for applications where power consumption is not a critical constraint.

Compliance Status:

All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with modern manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can CD74HC08M be directly replaced with CD74HC08M96?

A: Yes. CD74HC08M96 is the direct functional equivalent with identical electrical specifications, extended temperature range, and active production status. The primary difference is packaging format (Cut Tape & Digi-Reel vs. Tube), which does not affect circuit performance.

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

A: Both 14-SOIC and 14-SO packages share identical 0.154" (3.90mm) width and pin configuration. The designations reflect different manufacturing standards but are mechanically and electrically interchangeable for PCB assembly purposes.

Q: Are onsemi MC74HC08ADR2G and MC74HC08ADG interchangeable?

A: Both parts are functionally equivalent with identical electrical specifications and extended temperature range (-55°C ~ 125°C). The primary difference is packaging: MC74HC08ADR2G is supplied in Cut Tape & Digi-Reel format, while MC74HC08ADG is supplied in Tube format. Selection depends on assembly process requirements.

Q: Which substitute offers the best performance improvement?

A: MC74HC08ADR2G and 74HC08D both provide superior performance with 1 µA quiescent current (vs. 2 µA) and 13ns propagation delay (vs. 15ns). Both maintain extended temperature range compatibility and are suitable for performance-critical applications.

Q: Can 74HC08S14-13 be used in low-power applications?

A: No. 74HC08S14-13 exhibits 20 µA quiescent current, which is 10 times higher than the original CD74HC08M specification. This part is suitable only for applications where power consumption is not a design constraint.

Q: What is the minimum operating temperature requirement for substitute selection?

A: The CD74HC08M operates to -55°C. Substitutes maintaining this extended range (MC74HC08ADR2G, MC74HC08ADG, 74HC08D, 74HC08D,653, 74HC08D-Q100,118) are preferred for applications requiring full temperature coverage. Parts limited to -40°C minimum (SN74HC08DR, MM74HC08M, MM74HC08MX, 74HC08S14-13) are acceptable for standard industrial applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with current manufacturing standards and environmental regulations.

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