SN74ACT00DG4 Equivalent & Substitute Parts

Part Overview

The SN74ACT00DG4 is a NAND Gate IC featuring 4 channels with 2 inputs per channel in a 14-SOIC surface mount package. This Texas Instruments logic component operates across a 4.5V to 5.5V supply voltage range with a maximum propagation delay of 9ns at 5V with 50pF load. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Logic Type	NAND Gate
Number of Circuits	4
Number of Inputs	2
Voltage - Supply	4.5V ~ 5.5V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	24mA, 24mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ V, Max CL	9ns @ 5V, 50pF
Operating Temperature	-40°C ~ 85°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the SN74ACT00DG4 is determined by strict equivalence across the following critical parameters:

Logic Type: NAND Gate with identical 4-channel, 2-input configuration
Voltage Supply Range: 4.5V ~ 5.5V
Output Current Capability: 24mA high and low
Input Logic Levels: 0.8V low threshold, 2V high threshold
Propagation Delay: 9ns maximum at 5V with 50pF load
Package: 14-SOIC form factor with identical 0.154" width
Surface Mount compatibility

All substitute parts listed maintain these core electrical and mechanical specifications, ensuring direct functional replacement in existing circuit designs.

Parameter Comparison

Parameter	SN74ACT00DG4	SN74ACT00DR	74ACT00SCX	SN74ACT00D	MC74ACT00DG	MC74ACT00DR2G
Manufacturer	Texas Instruments	Texas Instruments	Fairchild Semiconductor	Texas Instruments	onsemi	onsemi
Logic Type	NAND Gate	NAND Gate	NAND Gate	NAND Gate	NAND Gate	NAND Gate
Number of Circuits	4	4	4	4	4	4
Number of Inputs	2	2	2	2	2	2
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Quiescent (Max)	2 µA	2 µA	2 µA	2 µA	4 µA	4 µA
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA
Input Logic Level - Low	0.8V	0.8V	0.8V	0.8V	0.8V	0.8V
Input Logic Level - High	2V	2V	2V	2V	2V	2V
Max Propagation Delay @ V, Max CL	9ns @ 5V, 50pF	9ns @ 5V, 50pF	9ns @ 5V, 50pF	9ns @ 5V, 50pF	9ns @ 5V, 50pF	9ns @ 5V, 50pF
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-55°C ~ 125°C	-55°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued at DiGi Electronics	Active	Active	Discontinued at DiGi Electronics	Active	Active

Engineering Selection Recommendations

For applications requiring the SN74ACT00DG4, the following substitutes are available based on product status and compliance:

Primary Substitutes (Active Status):

SN74ACT00DR (Texas Instruments) is the direct active equivalent with identical electrical specifications and ROHS3 compliance. This part maintains the original -40°C to 85°C operating temperature range and is available in Cut Tape and Digi-Reel packaging with substantial inventory.

74ACT00SCX (Fairchild Semiconductor) provides functional equivalence with matching electrical parameters and 14-SOIC packaging. This part is active and maintains full compatibility with the original design.

Extended Temperature Range Substitutes (Active Status):

MC74ACT00DG and MC74ACT00DR2G (onsemi) offer extended operating temperature range from -55°C to 125°C while maintaining all core electrical specifications. The quiescent current is specified at 4 µA maximum compared to 2 µA for the original part, which remains within acceptable operating margins for most applications. MC74ACT00DR2G is supplied in Tape & Reel packaging.

Discontinued Alternatives:

SN74ACT00D (Texas Instruments) is also discontinued at DiGi Electronics but remains available in limited inventory. This part is electrically identical to the original SN74ACT00DG4 and supplied in Tube packaging.

Frequently Asked Questions (FAQ)

Q: Can I use MC74ACT00DG or MC74ACT00DR2G as direct replacements for SN74ACT00DG4?

A: Yes. Both onsemi parts are electrically compatible. The extended operating temperature range (-55°C to 125°C) exceeds the original specification (-40°C to 85°C), making them suitable for applications with broader temperature requirements. The quiescent current specification of 4 µA is higher than the original 2 µA but remains within acceptable operating parameters for standard logic applications.

Q: What is the difference between SN74ACT00DR and SN74ACT00D?

A: Both are Texas Instruments 74ACT00 NAND gate ICs with identical electrical specifications. The primary difference is packaging: SN74ACT00DR is supplied in Cut Tape and Digi-Reel format, while SN74ACT00D is supplied in Tube packaging. Both are discontinued at DiGi Electronics.

Q: Are all substitute parts in the same 14-SOIC package?

A: Yes. All listed substitutes use the 14-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Q: Which substitute has the best availability?

A: SN74ACT00DR (Texas Instruments) has the highest inventory at 59,099 pieces, followed by 74ACT00SCX (Fairchild Semiconductor) at 40,816 pieces. Both are active products with reliable supply.

Q: Do all substitutes meet RoHS3 compliance?

A: All Texas Instruments and onsemi parts listed are ROHS3 compliant. The 74ACT00SCX (Fairchild Semiconductor) RoHS status is not specified in the available data.

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