SN74ACT32DRE4 Equivalent & Substitute Parts

Part Overview

The SN74ACT32DRE4 is a 4-channel 2-input OR gate logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74ACT32 logic family provides standard OR gate functionality across the 4.5V to 5.5V supply voltage range with consistent electrical performance characteristics.

Key Parameters

Parameter	Value
Logic Type	OR Gate
Number of Circuits	4
Number of Inputs	2
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	9ns @ 5V, 50pF
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SN74ACT32DRE4 is determined by strict equivalence across the following parameters: logic type (OR gate), circuit count (4 channels), input count (2 inputs per gate), supply voltage range (4.5V ~ 5.5V), output current capability (24mA high and low), propagation delay (9ns @ 5V, 50pF), operating temperature range (-40°C ~ 85°C), and package type (14-SOIC surface mount). All substitute parts listed maintain these electrical and mechanical specifications. Differences in quiescent current (2 µA vs. 4 µA) and packaging format (cut tape, tube, or bulk) do not affect functional equivalence for circuit operation.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Circuits	Inputs	Supply Voltage	Quiescent Current (Max)	Output Current (H/L)	Propagation Delay	Operating Temp	Package	Product Status
SN74ACT32DRE4	Texas Instruments	OR Gate	4	2	4.5V ~ 5.5V	2 µA	24mA, 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	14-SOIC	Obsolete
SN74ACT32DR	Texas Instruments	OR Gate	4	2	4.5V ~ 5.5V	2 µA	24mA, 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	14-SOIC	Active
MC74ACT32DR2G	onsemi	OR Gate	4	2	4.5V ~ 5.5V	4 µA	24mA, 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	14-SOIC	Active
MC74ACT32DG	onsemi	OR Gate	4	2	4.5V ~ 5.5V	4 µA	24mA, 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	14-SOIC	Active
74ACT32SC	Fairchild Semiconductor	OR Gate	4	2	4.5V ~ 5.5V	Not specified	Not specified	Not specified	Not specified	14-SOIC	Active
74ACT32SCX	Fairchild Semiconductor	OR Gate	4	2	4.5V ~ 5.5V	4 µA	24mA, 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	14-SOIC	Active

Engineering Selection Recommendations

For direct replacement of the obsolete SN74ACT32DRE4, the SN74ACT32DR from Texas Instruments is the primary choice, maintaining identical electrical specifications and active product status. Both Texas Instruments and onsemi parts (MC74ACT32DR2G and MC74ACT32DG) are actively manufactured and fully compliant with ROHS3 and REACH requirements. The onsemi variants exhibit slightly elevated quiescent current (4 µA vs. 2 µA) but maintain all critical functional parameters. Fairchild Semiconductor options (74ACT32SC and 74ACT32SCX) provide additional sourcing alternatives with active status. Selection should prioritize parts with active product status and confirmed availability for long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the SN74ACT32DR directly replace the SN74ACT32DRE4? A: Yes. Both parts share identical electrical specifications including supply voltage (4.5V ~ 5.5V), output current (24mA), propagation delay (9ns @ 5V, 50pF), and 14-SOIC packaging. The primary difference is product status: SN74ACT32DRE4 is obsolete while SN74ACT32DR is active.

Q: What is the significance of the quiescent current difference between 2 µA and 4 µA? A: The quiescent current difference does not affect functional equivalence. Both values fall within acceptable operating parameters for 74ACT logic family devices. Selection between parts with 2 µA or 4 µA quiescent current should be based on power budget requirements in low-power applications.

Q: Are onsemi MC74ACT32 parts compatible with Texas Instruments SN74ACT32 designs? A: Yes. The MC74ACT32DR2G and MC74ACT32DG maintain all critical electrical parameters: 4-channel OR gate configuration, 2 inputs per gate, 4.5V ~ 5.5V supply voltage, 24mA output current, and 9ns propagation delay. Packaging is identical 14-SOIC surface mount.

Q: What packaging formats are available for 74ACT32 substitutes? A: Available packaging formats include cut tape (CT) with Digi-Reel, tube, and bulk quantities. All substitute parts maintain the 14-SOIC (0.154", 3.90mm width) surface mount package footprint for PCB compatibility.

Q: Are all listed substitute parts ROHS3 compliant? A: Texas Instruments and onsemi parts are confirmed ROHS3 compliant. Fairchild Semiconductor part specifications for 74ACT32SC do not include detailed compliance data in the provided parameters.

Q: Can 74ACT32 logic ICs be used in designs requiring -40°C to 85°C operation? A: Yes. All listed substitute parts specify -40°C to 85°C operating temperature range, suitable for industrial and commercial applications within this thermal envelope.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message