SN74ACT14DRE4 Equivalent & Substitute Parts

Part Overview

The SN74ACT14DRE4 is a 6-channel inverter IC with Schmitt trigger inputs manufactured by Texas Instruments in a 14-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The device provides logic inversion with hysteresis characteristics suitable for signal conditioning applications requiring noise immunity.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Features	Schmitt Trigger
Voltage - Supply	4.5V ~ 5.5V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	24mA, 24mA
Input Logic Level - Low	0.5V ~ 1.4V
Input Logic Level - High	1.2V ~ 2.1V
Max Propagation Delay @ 5V, 50pF	11.5ns
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 SN74ACT14DRE4 is determined by strict equivalence across the following critical parameters:

Logic Type: Inverter with 6 channels and Schmitt trigger functionality
Supply Voltage Range: 4.5V ~ 5.5V
Output Drive Capability: 24mA high and low
Package: 14-SOIC surface mount form factor
Operating Temperature Range: -40°C ~ 85°C
Compliance: ROHS3, MSL Level 1

Substitute parts are grouped into three categories based on manufacturer and product status: parametric equivalents from the original manufacturer (Texas Instruments), direct manufacturer alternatives (onsemi), and manufacturer-recommended alternatives. All listed substitutes maintain identical or compatible electrical specifications and package dimensions.

Parameter Comparison

Parameter	SN74ACT14DRE4 (TI)	SN74ACT14DR (TI)	MC74ACT14DR2G (onsemi)	74ACT14SCX (onsemi)	MC74ACT14DG (onsemi)
Manufacturer	Texas Instruments	Texas Instruments	onsemi	onsemi	onsemi
Product Status	Obsolete	Active	Active	Active	Active
Logic Type	Inverter	Inverter	Inverter	Inverter	Inverter
Number of Circuits	6	6	6	6	6
Schmitt Trigger	Yes	Yes	Yes	Yes	Yes
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)	2 µA	2 µA	4 µA	2 µA	4 µA
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA
Max Propagation Delay @ 5V, 50pF	11.5ns	11.5ns	11.5ns	10ns	11.5ns
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°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
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Packaging Format	Cut Tape (CT) & Digi-Reel®	Cut Tape (CT) & Digi-Reel®	Cut Tape (CT) & Digi-Reel®	Cut Tape (CT) & Digi-Reel®	Tube
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

SN74ACT14DR is the primary substitute, offering identical electrical specifications and active product status from the original manufacturer Texas Instruments. This part maintains full compatibility with the obsolete SN74ACT14DRE4 across all critical parameters and is available in the same Cut Tape and Digi-Reel packaging formats.

MC74ACT14DR2G and MC74ACT14DG from onsemi provide functionally equivalent alternatives with active product status. Both parts meet the same supply voltage, output drive, and operating temperature requirements. MC74ACT14DR2G is available in Cut Tape and Digi-Reel packaging, while MC74ACT14DG is supplied in Tube format. Quiescent current specification for these onsemi variants is 4 µA maximum, compared to 2 µA for the original part, representing a minor operational difference within acceptable design margins.

74ACT14SCX from onsemi offers the lowest propagation delay at 10ns versus 11.5ns for other variants, with quiescent current matching the original specification at 2 µA maximum. This part is manufacturer-recommended and available in Cut Tape and Digi-Reel packaging.

All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can SN74ACT14DR be used as a direct replacement for SN74ACT14DRE4?

A: Yes. SN74ACT14DR is a parametric equivalent from Texas Instruments with identical electrical specifications, package type, and compliance certifications. The primary difference is product status: SN74ACT14DRE4 is obsolete while SN74ACT14DR is active.

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

A: Texas Instruments SN74ACT14DR maintains exact specification matching. onsemi variants (MC74ACT14DR2G, MC74ACT14DG, 74ACT14SCX) are functionally equivalent but may have minor specification variations. MC74ACT14DR2G and MC74ACT14DG specify 4 µA quiescent current versus 2 µA for the original. 74ACT14SCX offers improved propagation delay at 10ns.

Q: Are there packaging differences between substitute parts?

A: SN74ACT14DR, MC74ACT14DR2G, and 74ACT14SCX are available in Cut Tape and Digi-Reel packaging. MC74ACT14DG is supplied in Tube format. All use the same 14-SOIC surface mount package with identical pin configuration and board layout compatibility.

Q: Do all substitutes meet RoHS and MSL requirements?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL Level 1 rating, matching the original SN74ACT14DRE4 specifications.

Q: Which substitute offers the best performance characteristics?

A: 74ACT14SCX provides the lowest propagation delay at 10ns and maintains 2 µA quiescent current specification. SN74ACT14DR provides exact specification matching with active product status from the original manufacturer.

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