CD74ACT04M Equivalent & Substitute Parts

Part Overview

The CD74ACT04M 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 CD74ACT04M belongs to the 74ACT logic family and provides standard inverter functionality for digital signal processing in TTL-compatible systems.

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)	4 µA
Current - Output High/Low	24mA / 24mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay	9.3ns @ 5V, 50pF
Operating Temperature Range	-55°C ~ 125°C
Package Type	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CD74ACT04M is determined by strict equivalence across the following critical parameters:

Logic Function: All substitutes must be 6-channel inverters with single input per channel
Package: All substitutes must use 14-SOIC surface mount package with identical pin configuration
Electrical Specifications: Supply voltage range (4.5V ~ 5.5V), output current capability (24mA), and input logic thresholds must match
Base Product Number: All substitutes belong to the 74ACT04 family

The substitute parts listed below meet these criteria and are electrically and mechanically interchangeable with the CD74ACT04M in applications requiring standard inverter logic functionality.

Parameter Comparison

Parameter	CD74ACT04M (TI)	CD74ACT04M96 (Harris)	MC74ACT04DR2G (onsemi)	74ACT04SC (onsemi)	74ACT04SCX (onsemi)
Manufacturer	Texas Instruments	Harris Corporation	onsemi	onsemi	onsemi
Logic Type	Inverter	Inverter	Inverter	Inverter	Inverter
Number of Circuits	6	6	6	6	6
Number of Inputs	1	1	1	1	1
Voltage Supply Range	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Quiescent (Max)	4 µA	4 µA	4 µA	4 µA	4 µA
Current - Output High/Low	24mA / 24mA	24mA / 24mA	24mA / 24mA	24mA / 24mA	24mA / 24mA
Input Logic Level - Low	0.8V	0.8V	0.8V	0.8V	0.8V
Input Logic Level - High	2V	2V	2V	2V	2V
Max Propagation Delay @ 5V, 50pF	9.3ns	9.3ns	8.5ns	8.5ns	8.5ns
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package Type	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Discontinued	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	Not specified	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging Option	Bulk	Bulk	Tape & Reel (TR)	Tube	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

Primary Substitutes (Active Status, Full Compliance)

The onsemi parts 74ACT04SCX, 74ACT04SC, and MC74ACT04DR2G are recommended as primary substitutes. All three are currently active products with ROHS3 compliance and unlimited moisture sensitivity rating. The 74ACT04SCX offers the highest inventory availability (110,558 pcs) and is available in Cut Tape & Digi-Reel packaging for flexible procurement. The MC74ACT04DR2G provides Tape & Reel packaging suitable for automated assembly. The 74ACT04SC is available in Tube packaging for manual assembly operations.

Secondary Substitute (Obsolete Status)

The CD74ACT04M96 from Harris Corporation is electrically equivalent but carries obsolete product status and does not meet ROHS3 compliance requirements. This part should be considered only when inventory constraints prevent use of active alternatives.

Temperature Range Consideration

The CD74ACT04M operates across -55°C ~ 125°C, while onsemi substitutes operate across -40°C ~ 85°C. Applications requiring the extended lower temperature range (-55°C to -40°C) must retain the original CD74ACT04M or CD74ACT04M96.

Propagation Delay Difference

The onsemi substitutes (MC74ACT04DR2G, 74ACT04SC, 74ACT04SCX) exhibit 8.5ns maximum propagation delay compared to 9.3ns for the CD74ACT04M. This represents improved timing performance and does not create compatibility issues in applications designed for the original part.

Frequently Asked Questions (FAQ)

Q: Are the onsemi 74ACT04 variants pin-compatible with the CD74ACT04M?

A: Yes. All substitute parts use the identical 14-SOIC package with matching pin configuration. Direct board-level substitution is possible without circuit modification.

Q: What is the difference between 74ACT04SCX, 74ACT04SC, and MC74ACT04DR2G?

A: The three parts are electrically identical. The differences are packaging format: 74ACT04SCX uses Cut Tape & Digi-Reel, 74ACT04SC uses Tube, and MC74ACT04DR2G uses Tape & Reel. Selection depends on assembly process requirements and procurement volume.

Q: Can I use the onsemi substitutes in applications requiring -55°C operation?

A: No. The onsemi parts are rated only to -40°C minimum. Applications requiring -55°C operation must use the CD74ACT04M or CD74ACT04M96.

Q: Is the faster propagation delay of onsemi parts (8.5ns vs 9.3ns) a concern?

A: No. Faster propagation delay is a performance improvement. Applications designed for 9.3ns will function correctly with 8.5ns parts. Timing margins increase rather than decrease.

Q: Why is CD74ACT04M96 listed as a substitute if it is obsolete?

A: CD74ACT04M96 is electrically and mechanically equivalent but carries obsolete status and lacks ROHS3 compliance. It is listed for reference only and should not be selected for new designs or ongoing production.

Q: Which substitute should I choose for new production?

A: For new production, select 74ACT04SCX (highest inventory, Cut Tape & Digi-Reel packaging) or MC74ACT04DR2G (Tape & Reel for automated assembly). Both are active products with full ROHS3 compliance.

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