MM74HCT00M NAND Gate IC Equivalent & Substitute Parts

Part Overview

The MM74HCT00M is a 4-channel 2-input NAND 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 production continuity. The 74HCT00 series represents a standard logic function across multiple manufacturers, enabling direct functional substitution based on electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Logic Type	NAND Gate
Number of Circuits	4
Number of Inputs	2
Voltage Supply Range	4.5V ~ 5.5V
Input Logic Level Low	0.8V
Input Logic Level High	2V
Package Type	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Operating Temperature Range	-40°C ~ 85°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the MM74HCT00M is determined by strict adherence to the following criteria:

Mandatory Compatibility Parameters:

Logic function: 4-channel 2-input NAND gate
Supply voltage range: 4.5V ~ 5.5V
Input logic thresholds: Low 0.8V, High 2V
Package: 14-SOIC form factor
Mounting: Surface mount
Pin configuration: Identical to 74HCT00 base product

Acceptable Variation Parameters:

Operating temperature range (may extend beyond -40°C ~ 85°C)
Quiescent current (within manufacturer specifications)
Output current ratings (4mA minimum for both high and low states)
Propagation delay (within logic timing requirements)
Product status (active, last time buy, or discontinued parts acceptable if electrically equivalent)

All substitute parts listed maintain the 74HCT00 base product number designation and are functionally interchangeable at the logic level.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage Supply	Quiescent Current (Max)	Output Current High/Low	Propagation Delay @ Conditions	Operating Temperature	Package	RoHS Status
MM74HCT00M	onsemi	Obsolete	4.5V ~ 5.5V	1 µA	4.8mA / 4.8mA	23ns @ 5V, 50pF	-40°C ~ 85°C	14-SOIC	ROHS3 Compliant
74HCT00D,653	Nexperia USA Inc.	Active	4.5V ~ 5.5V	40 µA	4mA / 4mA	12ns @ 4.5V, 50pF	-40°C ~ 125°C	14-SOIC	ROHS3 Compliant
74HCT00D-Q100,118	Nexperia USA Inc.	Active	4.5V ~ 5.5V	40 µA	4mA / 4mA	12ns @ 4.5V, 50pF	-40°C ~ 125°C	14-SOIC	ROHS3 Compliant
74HCT00S14-13	Diodes Incorporated	Active	4.5V ~ 5.5V	20 µA	4mA / 4mA	22ns @ 4.5V, 50pF	-40°C ~ 125°C	14-SOIC	ROHS3 Compliant
CD74HCT00M	Harris Corporation	Obsolete	4.5V ~ 5.5V	2 µA	4mA / 4mA	20ns @ 4.5V, 50pF	-55°C ~ 125°C	14-SOIC	RoHS non-compliant
CD74HCT00M96	Texas Instruments	Active	4.5V ~ 5.5V	2 µA	4mA / 4mA	20ns @ 4.5V, 50pF	-55°C ~ 125°C	14-SOIC	ROHS3 Compliant
CD74HCT00MT	Texas Instruments	Last Time Buy	4.5V ~ 5.5V	2 µA	4mA / 4mA	20ns @ 4.5V, 50pF	-55°C ~ 125°C	14-SOIC	ROHS3 Compliant
SN74HCT00D	Texas Instruments	Discontinued at DiGi Electronics	4.5V ~ 5.5V	2 µA	4mA / 4mA	18ns @ 5.5V, 50pF	-40°C ~ 85°C	14-SOIC	ROHS3 Compliant
SN74HCT00DG4	Texas Instruments	Discontinued at DiGi Electronics	4.5V ~ 5.5V	2 µA	4mA / 4mA	18ns @ 5.5V, 50pF	-40°C ~ 85°C	14-SOIC	ROHS3 Compliant
SN74HCT00DR	Texas Instruments	Active	4.5V ~ 5.5V	2 µA	4mA / 4mA	18ns @ 5.5V, 50pF	-40°C ~ 85°C	14-SOIC	ROHS3 Compliant
SN74HCT00DT	Texas Instruments	Discontinued at DiGi Electronics	4.5V ~ 5.5V	2 µA	4mA / 4mA	18ns @ 5.5V, 50pF	-40°C ~ 85°C	14-SOIC	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Active Product Status):

CD74HCT00M96 (Texas Instruments) and SN74HCT00DR (Texas Instruments) are the preferred substitutes. Both are active products with ROHS3 compliance, extended operating temperature range (-55°C ~ 125°C), and proven supply chain availability. These parts are electrically equivalent to the MM74HCT00M with identical logic function and package.

74HCT00D,653 (Nexperia USA Inc.) and 74HCT00D-Q100,118 (Nexperia USA Inc.) are active alternatives with ROHS3 compliance and extended temperature range. The automotive-qualified variant (74HCT00D-Q100,118) includes AEC-Q100 certification for applications requiring automotive-grade components.

74HCT00S14-13 (Diodes Incorporated) is an active product with ROHS3 compliance and extended temperature range, offering high inventory availability.

Secondary Substitutes (Limited Availability):

CD74HCT00MT (Texas Instruments) is classified as Last Time Buy, indicating limited future availability. Use only when primary substitutes are unavailable.

SN74HCT00D, SN74HCT00DG4, and SN74HCT00DT (Texas Instruments) are discontinued at DiGi Electronics but may be available through alternative distribution channels. These are suitable for legacy system support only.

CD74HCT00M (Harris Corporation) is obsolete and RoHS non-compliant. Avoid for new designs.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), matching the original part's environmental specifications. The extended operating temperature range of active substitutes provides additional design margin for industrial and automotive applications.

Frequently Asked Questions (FAQ)

Q: Can I directly replace MM74HCT00M with any of the listed substitutes?

A: Yes, all listed substitutes are pin-compatible and functionally equivalent. They maintain identical logic function (4-channel 2-input NAND gate), supply voltage range (4.5V ~ 5.5V), input logic thresholds, and 14-SOIC package form factor. No circuit modifications are required.

Q: What is the difference between the various Texas Instruments variants (CD74HCT00M96, SN74HCT00D, SN74HCT00DR, SN74HCT00DT)?

A: All Texas Instruments variants are electrically equivalent. Differences exist only in packaging format (tube, tape & reel, or cut tape) and product status. CD74HCT00M96 and SN74HCT00DR are active products. SN74HCT00D, SN74HCT00DG4, and SN74HCT00DT are discontinued at DiGi Electronics. Select based on current availability and packaging requirements.

Q: Why do some substitutes have lower quiescent current specifications?

A: Quiescent current variation reflects manufacturing process differences between suppliers. All listed parts meet the 4.5V ~ 5.5V supply requirement and maintain identical logic thresholds. Lower quiescent current (2 µA vs. 40 µA) indicates improved power efficiency but does not affect functional compatibility.

Q: Is the automotive-qualified variant (74HCT00D-Q100,118) suitable for non-automotive applications?

A: Yes. The AEC-Q100 qualification indicates additional testing and reliability assurance. This part is fully compatible with standard industrial and consumer applications and may be used as a direct substitute without restrictions.

Q: What is the significance of the extended operating temperature range (-55°C ~ 125°C) in some substitutes?

A: Extended temperature range indicates the part maintains specified electrical characteristics across a wider environmental envelope. This provides additional design margin for applications subject to temperature extremes. Parts with standard range (-40°C ~ 85°C) are suitable for typical industrial environments.

Q: Are there any compliance or certification differences between substitutes?

A: All active substitutes maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). The automotive-qualified variant (74HCT00D-Q100,118) includes AEC-Q100 certification. CD74HCT00M (Harris Corporation) is RoHS non-compliant and should not be used in new designs subject to RoHS requirements.

Q: Which substitute offers the best long-term availability?

A: CD74HCT00M96 (Texas Instruments) and SN74HCT00DR (Texas Instruments) are active products with established supply chains. 74HCT00D,653 and 74HCT00D-Q100,118 (Nexperia USA Inc.) and 74HCT00S14-13 (Diodes Incorporated) are also active with strong inventory levels. Avoid Last Time Buy and discontinued variants for new production designs.

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