74HCT04DR2G Equivalent & Substitute Parts

Part Overview

The 74HCT04DR2G is a 6-channel inverter logic IC manufactured by onsemi in 14-SOIC surface mount packaging. This part is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and procurement. The 74HCT04 series represents a standard TTL-compatible inverter function widely available across multiple manufacturers, enabling straightforward substitution based on electrical and mechanical parameter alignment.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Voltage Supply Range	4.5V ~ 5.5V
Current - Quiescent (Max)	2 µA
Current - Output High/Low	4mA / 4mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay	17ns @ 5V, 50pF
Operating Temperature Range	-55°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74HCT04DR2G is determined by strict alignment of the following electrical and mechanical parameters:

Critical Substitution Parameters:

Logic type (Inverter) and circuit configuration (6 channels, 1 input per channel)
Supply voltage range (4.5V ~ 5.5V)
Input logic levels (Low: 0.8V, High: 2V)
Package type (14-SOIC surface mount)
Propagation delay performance (≤20ns @ specified voltage and load)
Operating temperature range compatibility

Acceptable Variation Ranges:

Quiescent current: up to 2 µA maximum
Output current: 4mA to 4.8mA for both high and low states
Propagation delay: up to 20ns @ 4.5V or 5V, 50pF load
Operating temperature: -40°C to 125°C minimum span

Substitute parts meeting these criteria are classified as direct electrical equivalents regardless of manufacturer or product status, provided they maintain identical pin configuration and functional behavior within the specified parameter windows.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Voltage Supply	Quiescent Current (Max)	Output Current H/L	Propagation Delay	Operating Temp	Package
74HCT04DR2G	onsemi	Obsolete	4.5V ~ 5.5V	2 µA	4mA / 4mA	17ns @ 5V, 50pF	-55°C ~ 125°C	14-SOIC
MM74HCT04M	Fairchild Semiconductor	Active	4.5V ~ 5.5V	2 µA	4.8mA / 4.8mA	20ns @ 5V, 50pF	-40°C ~ 85°C	14-SOIC
MM74HCT04MX	Fairchild Semiconductor	Active	4.5V ~ 5.5V	2 µA	4.8mA / 4.8mA	20ns @ 5V, 50pF	-40°C ~ 85°C	14-SOIC
MC74HCT04ADR2G	onsemi	Active	4.5V ~ 5.5V	1 µA	4mA / 4mA	17ns @ 5V, 50pF	-55°C ~ 125°C	14-SOIC
74HCT04D-Q100,118	Nexperia USA Inc.	Active	4.5V ~ 5.5V	2 µA	4mA / 4mA	19ns @ 4.5V, 50pF	-40°C ~ 125°C	14-SOIC
CD74HCT04M	Harris Corporation	Obsolete	4.5V ~ 5.5V	2 µA	4mA / 4mA	19ns @ 4.5V, 50pF	-55°C ~ 125°C	14-SOIC
CD74HCT04M96	Harris Corporation	Obsolete	4.5V ~ 5.5V	2 µA	4mA / 4mA	19ns @ 4.5V, 50pF	-55°C ~ 125°C	14-SOIC
CD74HCT04MT	Texas Instruments	Discontinued at DiGi Electronics	4.5V ~ 5.5V	2 µA	4mA / 4mA	19ns @ 4.5V, 50pF	-55°C ~ 125°C	14-SOIC
SN74HCT04D	Texas Instruments	Discontinued at DiGi Electronics	4.5V ~ 5.5V	2 µA	4mA / 4mA	18ns @ 5.5V, 50pF	-40°C ~ 85°C	14-SOIC
SN74HCT04DR	Texas Instruments	Active	4.5V ~ 5.5V	2 µA	4mA / 4mA	18ns @ 5.5V, 50pF	-40°C ~ 85°C	14-SOIC
SN74HCT04DT	Texas Instruments	Discontinued at DiGi Electronics	4.5V ~ 5.5V	2 µA	4mA / 4mA	18ns @ 5.5V, 50pF	-40°C ~ 85°C	14-SOIC

Engineering Selection Recommendations

Primary Recommendation - Active Status: MC74HCT04ADR2G (onsemi) is the preferred substitute. This part maintains identical electrical specifications to the 74HCT04DR2G, including propagation delay (17ns @ 5V, 50pF) and operating temperature range (-55°C ~ 125°C). Active product status ensures long-term availability and supply chain stability. RoHS3 compliance and MSL 1 rating match the original part requirements.

Secondary Recommendations - Active Status: SN74HCT04DR (Texas Instruments) is actively available and meets all critical electrical parameters. Operating temperature range is limited to -40°C ~ 85°C, which may restrict use in extended temperature applications. Propagation delay of 18ns @ 5.5V remains within acceptable performance windows.

Alternative Options - Fairchild Semiconductor: MM74HCT04M and MM74HCT04MX (Fairchild Semiconductor) are active products with full parameter compatibility. Output current specifications (4.8mA) exceed the original 4mA rating, providing improved drive capability. Operating temperature range (-40°C ~ 85°C) limits use in extended temperature environments.

Automotive-Grade Option: 74HCT04D-Q100,118 (Nexperia USA Inc.) is an active, AEC-Q100 qualified automotive-grade inverter. This part is suitable for automotive and industrial applications requiring qualification documentation. Operating temperature range extends to -40°C ~ 125°C.

Obsolete Alternatives - Not Recommended for New Designs: CD74HCT04M, CD74HCT04M96, CD74HCT04MT, SN74HCT04D, and SN74HCT04DT are classified as obsolete or discontinued. These parts may be available from legacy inventory but should not be selected for new designs due to uncertain long-term supply.

Frequently Asked Questions (FAQ)

Q: Can I use MM74HCT04M as a direct replacement for 74HCT04DR2G? A: Yes, MM74HCT04M is electrically compatible. All critical parameters (logic type, circuit count, supply voltage, input levels, package) align with the original part. Output current is slightly higher (4.8mA vs 4mA), which is acceptable. Operating temperature range is narrower (-40°C ~ 85°C vs -55°C ~ 125°C), so verify your application does not require extended temperature operation.

Q: What is the difference between MC74HCT04ADR2G and 74HCT04DR2G? A: Both parts are manufactured by onsemi and share identical electrical specifications and operating temperature range. MC74HCT04ADR2G is the active product replacement, while 74HCT04DR2G is obsolete. Quiescent current is slightly lower in the MC variant (1 µA vs 2 µA), representing improved power efficiency.

Q: Are all 14-SOIC packaged 74HCT04 variants pin-compatible? A: Yes. All listed substitute parts use 14-SOIC surface mount packaging with identical pin configuration and functional assignment. Physical dimensions (0.154" width, 3.90mm) are standardized across all variants.

Q: Can I use SN74HCT04DR in applications requiring -55°C operation? A: No. SN74HCT04DR is rated for -40°C ~ 85°C operation only. For extended low-temperature applications, select MC74HCT04ADR2G, CD74HCT04M, CD74HCT04M96, or CD74HCT04MT, which support -55°C minimum.

Q: What is the propagation delay difference between substitute parts? A: Propagation delay ranges from 17ns to 20ns depending on test voltage and manufacturer. The original 74HCT04DR2G specifies 17ns @ 5V, 50pF. Substitutes range from 17ns to 20ns, all within acceptable logic timing margins for standard TTL applications. Verify specific timing requirements for high-speed or critical path applications.

Q: Is RoHS compliance required for my application? A: MC74HCT04ADR2G, 74HCT04D-Q100,118, SN74HCT04D, SN74HCT04DR, and SN74HCT04DT are RoHS3 compliant. CD74HCT04M and CD74HCT04M96 are RoHS non-compliant. Verify your procurement and environmental requirements before selection.

Q: Which substitute offers the best long-term availability? A: MC74HCT04ADR2G (onsemi) and SN74HCT04DR (Texas Instruments) are both active products with established supply chains. MM74HCT04M and MM74HCT04MX (Fairchild Semiconductor) are also active. These three options provide the highest confidence for sustained procurement.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message