SN74ACT14DRG4 Equivalent & Substitute Parts

Part Overview

The SN74ACT14DRG4 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 operates within a 4.5V to 5.5V supply voltage range and is suitable for logic signal inversion applications requiring hysteresis input characteristics.

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
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 SN74ACT14DRG4 is determined by strict equivalence across the following critical parameters:

Logic Type: Inverter with 6 channels and 1 input per channel
Schmitt Trigger feature requirement
Supply voltage range: 4.5V ~ 5.5V
Output current capability: 24mA minimum for both high and low states
Package: 14-SOIC form factor
Operating temperature range: -40°C ~ 85°C
RoHS3 compliance and MSL Level 1 rating

Substitute parts are grouped by manufacturer and product status. Texas Instruments parts maintain identical electrical specifications. onsemi parts are functionally equivalent with minor variations in quiescent current and input logic level thresholds, which remain within acceptable operating margins for standard logic applications.

Parameter Comparison

Part Number	Manufacturer	Product Status	Quiescent Current (Max)	Input Logic Level - Low	Input Logic Level - High	Propagation Delay @ 5V, 50pF	Packaging	Inventory
SN74ACT14DRG4	Texas Instruments	Obsolete	2 µA	0.5V ~ 1.4V	1.2V ~ 2.1V	11.5ns	14-SOIC	1098 Pcs
SN74ACT14DR	Texas Instruments	Active	2 µA	0.5V ~ 1.4V	1.2V ~ 2.1V	11.5ns	14-SOIC	1153 Pcs
SN74ACT14DRE4	Texas Instruments	Obsolete	2 µA	0.5V ~ 1.4V	1.2V ~ 2.1V	11.5ns	14-SOIC	2404 Pcs
MC74ACT14DR2G	onsemi	Active	4 µA	0.8V	2V	11.5ns	14-SOIC	235100 Pcs
74ACT14SCX	onsemi	Active	2 µA	0.8V	2V	10ns	14-SOIC	11774 Pcs
MC74ACT14DG	onsemi	Active	4 µA	0.8V	2V	11.5ns	14-SOIC	2038 Pcs

Engineering Selection Recommendations

For applications requiring direct replacement of the obsolete SN74ACT14DRG4, the SN74ACT14DR is the primary choice. This Texas Instruments part maintains identical electrical specifications and active product status, ensuring long-term availability and consistent performance characteristics.

The SN74ACT14DRE4 provides an alternative Texas Instruments option with higher inventory availability, though it carries obsolete status. This part is electrically identical to the SN74ACT14DRG4 and suitable for applications where extended supply is required.

onsemi alternatives (MC74ACT14DR2G, 74ACT14SCX, and MC74ACT14DG) are functionally equivalent substitutes with active product status. These parts feature slightly elevated quiescent current specifications (4 µA for MC74ACT14DR2G and MC74ACT14DG) and adjusted input logic level thresholds (0.8V low, 2V high). The 74ACT14SCX offers improved propagation delay performance at 10ns. All onsemi variants maintain full RoHS3 compliance and MSL Level 1 rating.

Selection should prioritize active status parts for new designs. Texas Instruments SN74ACT14DR is recommended for direct replacement. onsemi parts are suitable where supply chain considerations or cost factors warrant alternative sourcing.

Frequently Asked Questions (FAQ)

Q: Can the SN74ACT14DR directly replace the SN74ACT14DRG4?

A: Yes. The SN74ACT14DR is electrically and mechanically identical to the SN74ACT14DRG4, with the primary difference being active product status versus obsolete status. Both parts share identical supply voltage, output current, propagation delay, and package specifications.

Q: What are the differences between Texas Instruments and onsemi substitutes?

A: Texas Instruments parts (SN74ACT14DR, SN74ACT14DRE4) maintain the original input logic level thresholds (0.5V ~ 1.4V low, 1.2V ~ 2.1V high) and 2 µA quiescent current. onsemi parts feature adjusted input thresholds (0.8V low, 2V high) and higher quiescent current for MC74ACT14DR2G and MC74ACT14DG (4 µA). All parts meet the 4.5V ~ 5.5V supply requirement and 24mA output current specification.

Q: Are packaging differences significant between these substitutes?

A: All substitute parts use the 14-SOIC package form factor. Packaging variations (Cut Tape & Digi-Reel, Tube) affect procurement and handling but do not impact electrical performance or PCB compatibility.

Q: Which substitute offers the best propagation delay performance?

A: The 74ACT14SCX provides the fastest propagation delay at 10ns compared to 11.5ns for other parts. This represents a 13% improvement in switching speed while maintaining all other electrical specifications.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original SN74ACT14DRG4 specifications.

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