SN74ACT04D Equivalent & Substitute Parts

Part Overview

The SN74ACT04D is a 6-channel inverter logic IC manufactured by Texas Instruments in a 14-SOIC surface mount package. This part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. The 74ACT04 series provides standard inverter functionality across the ACT logic family, with multiple manufacturers offering compatible alternatives that maintain electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
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	8.5ns @ 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 of the SN74ACT04D is determined by strict equivalence across the following critical parameters:

Logic Type: Inverter
Number of Circuits: 6
Number of Inputs: 1
Package / Case: 14-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Voltage - Supply: 4.5V ~ 5.5V
Operating Temperature: -40°C ~ 85°C
RoHS Status: ROHS3 Compliant

All substitute parts listed maintain these specifications. Variations in quiescent current (2 µA vs. 4 µA) and packaging format (Tube, Cut Tape, or Tape & Reel) do not affect functional compatibility, as these represent different supply configurations rather than electrical performance differences.

Parameter Comparison

Part Number	Manufacturer	Product Status	Packaging	Voltage - Supply	Current - Quiescent (Max)	Operating Temperature	Package / Case	Inventory
SN74ACT04D	Texas Instruments	Discontinued at DiGi Electronics	Tube	4.5V ~ 5.5V	2 µA	-40°C ~ 85°C	14-SOIC	3626 Pcs
SN74ACT04DR	Texas Instruments	Active	Cut Tape (CT) & Digi-Reel®	4.5V ~ 5.5V	2 µA	-40°C ~ 85°C	14-SOIC	2400 Pcs
MC74ACT04DR2G	onsemi	Active	Tape & Reel (TR)	4.5V ~ 5.5V	4 µA	-40°C ~ 85°C	14-SOIC	3416 Pcs
74ACT04SCX	onsemi	Active	Cut Tape (CT) & Digi-Reel®	4.5V ~ 5.5V	4 µA	-40°C ~ 85°C	14-SOIC	110558 Pcs
74ACT04SC	onsemi	Active	Tube	4.5V ~ 5.5V	4 µA	-40°C ~ 85°C	14-SOIC	3253 Pcs

Engineering Selection Recommendations

For applications requiring the SN74ACT04D, the following selection criteria apply:

Texas Instruments Source (Active Status): SN74ACT04DR maintains identical electrical specifications and quiescent current to the original SN74ACT04D. This part is currently active and available in Cut Tape and Digi-Reel packaging formats, providing direct functional equivalence with the same manufacturer lineage.

onsemi Alternatives (Active Status): MC74ACT04DR2G, 74ACT04SCX, and 74ACT04SC are all active onsemi products that meet all critical electrical and mechanical parameters. These parts operate within the same voltage supply range, temperature range, and package footprint. The quiescent current specification of 4 µA (versus 2 µA in the original) remains within acceptable operating margins for standard inverter applications and does not affect functional compatibility.

Packaging Considerations: Selection between Cut Tape, Tape & Reel, and Tube packaging depends on production volume and assembly requirements. All three formats contain electrically identical components in the same 14-SOIC package.

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 SN74ACT04DR be used as a direct replacement for SN74ACT04D?

A: Yes. SN74ACT04DR is manufactured by Texas Instruments and maintains identical electrical specifications, including quiescent current (2 µA), voltage supply range (4.5V ~ 5.5V), and 14-SOIC package footprint. The difference is packaging format: SN74ACT04DR is supplied in Cut Tape and Digi-Reel format rather than Tube.

Q: What is the difference between the Texas Instruments and onsemi versions?

A: Both manufacturers produce parts that meet the same electrical and mechanical specifications for the 74ACT04 series. The primary difference is quiescent current: Texas Instruments SN74ACT04DR specifies 2 µA maximum, while onsemi parts (MC74ACT04DR2G, 74ACT04SCX, 74ACT04SC) specify 4 µA maximum. Both values are within acceptable operating parameters for inverter logic applications.

Q: Does the quiescent current difference (2 µA vs. 4 µA) affect circuit performance?

A: No. Both specifications fall within the ACT logic family standard and do not affect functional inverter operation, propagation delay, or output drive capability. The difference represents normal manufacturing variation within the 74ACT04 series specification.

Q: Are all substitute parts in the same package?

A: Yes. All listed parts use the 14-SOIC (0.154", 3.90mm Width) surface mount package. They are mechanically and electrically interchangeable at the PCB level. Packaging format (Tube, Cut Tape, or Tape & Reel) refers to supply method, not component packaging.

Q: Which substitute has the highest inventory availability?

A: 74ACT04SCX (onsemi) has the highest inventory at 110,558 pieces, followed by SN74ACT04D (Texas Instruments) at 3,626 pieces and 74ACT04SC (onsemi) at 3,253 pieces.

Q: Are all substitutes RoHS compliant?

A: Yes. All listed parts are ROHS3 compliant with MSL Level 1 rating, meeting current environmental and manufacturing standards.

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