CD74ACT14M Equivalent & Substitute Parts

Part Overview

The CD74ACT14M is a 6-channel inverter IC with Schmitt trigger inputs manufactured by Texas Instruments in a 14-SOIC surface mount package. This part is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing production and maintenance applications. The CD74ACT14M operates within the 74ACT logic family standard, providing reliable signal inversion with hysteresis characteristics suitable for noise-tolerant digital applications.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Features	Schmitt Trigger
Voltage - Supply	4.5V ~ 5.5V
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the CD74ACT14M is determined by strict equivalence across the following critical parameters:

Logic Family & Function: All substitutes must be 74ACT inverters with 6 channels and Schmitt trigger inputs
Package Compatibility: All substitutes use 14-SOIC surface mount packaging with identical physical dimensions (0.154", 3.90mm width)
Electrical Specifications: Supply voltage range (4.5V ~ 5.5V), input logic levels (Low: 0.8V, High: 2V), and output current capability (24mA high/low) must match
Compliance: All substitutes maintain ROHS3 compliance and REACH unaffected status

Packaging format (Tube, Tape & Reel, or Cut Tape) does not affect functional equivalence and may be selected based on procurement requirements.

Parameter Comparison

Parameter	CD74ACT14M (Main)	CD74ACT14M96	MC74ACT14DR2G	74ACT14SCX	MC74ACT14DG
Manufacturer	Texas Instruments	Texas Instruments	onsemi	onsemi	onsemi
Product Status	Discontinued	Active	Active	Active	Active
Packaging	Tube	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Cut Tape (CT) & Digi-Reel®	Tube
Logic Type	Inverter	Inverter	Inverter	Inverter	Inverter
Number of Circuits	6	6	6	6	6
Features	Schmitt Trigger	Schmitt Trigger	Schmitt Trigger	Schmitt Trigger	Schmitt Trigger
Voltage - Supply	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	2 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	14.5ns	14.5ns	11.5ns	10ns	11.5ns
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

CD74ACT14M96 (Texas Instruments, Tape & Reel): Direct manufacturer equivalent with identical electrical specifications and extended temperature range matching the original part. Active product status with 2,350 units in stock. Recommended for applications requiring Texas Instruments sourcing or tape & reel packaging format.

MC74ACT14DR2G (onsemi, Cut Tape & Digi-Reel): Active onsemi equivalent with improved propagation delay (11.5ns vs. 14.5ns) and highest inventory availability (235,100 units). Operating temperature range limited to -40°C ~ 85°C. Suitable for standard commercial temperature applications with superior performance margin.

74ACT14SCX (onsemi, Cut Tape & Digi-Reel): Manufacturer-recommended onsemi substitute with fastest propagation delay (10ns) and lowest quiescent current (2 µA). Operating temperature range -40°C ~ 85°C. Optimal for power-sensitive or timing-critical applications within commercial temperature specifications.

MC74ACT14DG (onsemi, Tube): Active onsemi equivalent in tube packaging matching the original CD74ACT14M format. Electrical specifications and propagation delay (11.5ns) align with MC74ACT14DR2G. Operating temperature range -40°C ~ 85°C. Recommended for applications requiring tube packaging format.

All substitutes maintain ROHS3 compliance and REACH unaffected status. Selection should prioritize product status (all substitutes are active), inventory availability, packaging requirements, and operating temperature range compatibility with the target application.

Frequently Asked Questions (FAQ)

Q: Can I use MC74ACT14DR2G as a direct replacement for CD74ACT14M?

A: Yes. Both parts share identical logic function (6-channel inverter with Schmitt trigger), electrical specifications (4.5V ~ 5.5V supply, 24mA output current, matching input logic levels), and 14-SOIC package dimensions. The MC74ACT14DR2G operates within -40°C ~ 85°C, which is narrower than the original -55°C ~ 125°C range. Verify application temperature requirements before selection.

Q: What is the difference between CD74ACT14M96 and MC74ACT14DR2G?

A: CD74ACT14M96 is manufactured by Texas Instruments with identical specifications to the original CD74ACT14M, including -55°C ~ 125°C operating temperature. MC74ACT14DR2G is manufactured by onsemi with -40°C ~ 85°C operating temperature and faster propagation delay (11.5ns vs. 14.5ns). Both are functionally equivalent for standard commercial applications.

Q: Why does 74ACT14SCX have lower quiescent current?

A: The 74ACT14SCX specification lists 2 µA maximum quiescent current compared to 4 µA for other variants. This represents a manufacturing or characterization difference within the 74ACT14 family. All parts remain functionally equivalent for logic inversion and Schmitt trigger operation.

Q: Does packaging format affect electrical performance?

A: No. Tube, Tape & Reel, and Cut Tape packaging formats are procurement and handling options only. Electrical performance, pin configuration, and functional characteristics remain identical across all packaging formats for the same part number.

Q: What is the operating temperature impact on substitution?

A: CD74ACT14M and CD74ACT14M96 operate from -55°C ~ 125°C. MC74ACT14DR2G, 74ACT14SCX, and MC74ACT14DG operate from -40°C ~ 85°C. For applications requiring extended temperature range below -40°C or above 85°C, use CD74ACT14M96. For standard commercial temperature applications, all substitutes are equivalent.

Q: Are all substitutes RoHS compliant?

A: Yes. All listed substitutes maintain ROHS3 compliance and REACH unaffected status, matching the original CD74ACT14M environmental certifications.

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