CD74ACT32M OR Gate IC Equivalent & Substitute Parts

Part Overview

The CD74ACT32M is a 4-channel 2-input OR gate logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This part is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and procurement. The 74ACT32 logic family provides standard OR gate functionality across multiple manufacturers, with several direct equivalents available in active production status.

Key Parameters

Parameter	Value
Logic Type	OR Gate
Number of Circuits	4
Number of Inputs	2
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
Package / Case	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 CD74ACT32M is determined by strict equivalence across the following parameters: logic type (OR gate), circuit count (4 channels), input count (2 inputs per channel), supply voltage range (4.5V ~ 5.5V), package type (14-SOIC), and mounting method (surface mount). All substitute parts listed maintain identical functional specifications and pinout compatibility. Differences in packaging format (tube vs. tape & reel) and operating temperature ranges do not affect functional interchangeability in standard applications. Propagation delay variations within the specified range do not constitute a substitution barrier for logic-level applications.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Circuits / Inputs	Supply Voltage	Quiescent Current (Max)	Output Current	Package	Status	Propagation Delay @ 5V, 50pF	Operating Temp
CD74ACT32M	Texas Instruments	OR Gate	4 / 2	4.5V ~ 5.5V	4 µA	24mA / 24mA	14-SOIC	Discontinued	12.1ns	-55°C ~ 125°C
CD74ACT32M96	Texas Instruments	OR Gate	4 / 2	4.5V ~ 5.5V	4 µA	24mA / 24mA	14-SOIC	Active	12.1ns	-55°C ~ 125°C
MC74ACT32DG	onsemi	OR Gate	4 / 2	4.5V ~ 5.5V	4 µA	24mA / 24mA	14-SOIC	Active	9ns	-40°C ~ 85°C
MC74ACT32DR2G	onsemi	OR Gate	4 / 2	4.5V ~ 5.5V	4 µA	24mA / 24mA	14-SOIC	Active	9ns	-40°C ~ 85°C
74ACT32SC	Fairchild Semiconductor	OR Gate	4 / 2	4.5V ~ 5.5V	4 µA	24mA / 24mA	14-SOIC	Active	Not specified	Not specified
74ACT32SCX	Fairchild Semiconductor	OR Gate	4 / 2	4.5V ~ 5.5V	4 µA	24mA / 24mA	14-SOIC	Active	9ns	-40°C ~ 85°C

Engineering Selection Recommendations

CD74ACT32M96 is the primary substitute, offering identical specifications to the original part while maintaining active production status from Texas Instruments. This part is available in tape & reel packaging and carries the same RoHS3 compliance and unlimited moisture sensitivity rating.

MC74ACT32DG and MC74ACT32DR2G are functionally equivalent alternatives from onsemi. Both parts meet all electrical specifications and maintain 14-SOIC package compatibility. MC74ACT32DG is supplied in tube packaging; MC74ACT32DR2G is supplied in cut tape and digi-reel format. Both operate within -40°C to 85°C temperature range with 9ns propagation delay.

74ACT32SCX from Fairchild Semiconductor is an active substitute with identical electrical performance to the onsemi variants, including 9ns propagation delay and -40°C to 85°C operating range. This part is available in high inventory volume.

74ACT32SC from Fairchild Semiconductor is an active substitute with complete functional equivalence, though detailed electrical specifications are not fully documented in available data.

All listed substitutes maintain ROHS3 compliance and are suitable for direct replacement in applications requiring 4-channel 2-input OR gate functionality in 14-SOIC surface mount packaging.

Frequently Asked Questions (FAQ)

Q: Can MC74ACT32DG replace CD74ACT32M in all applications? A: Yes. Both parts provide identical logic functionality, supply voltage range, output current capability, and 14-SOIC package compatibility. The onsemi part operates within a narrower temperature range (-40°C to 85°C vs. -55°C to 125°C) and has faster propagation delay (9ns vs. 12.1ns), neither of which creates substitution barriers for standard logic applications.

Q: What is the difference between CD74ACT32M96 and CD74ACT32M? A: Both are Texas Instruments 74ACT32 OR gates with identical electrical specifications and operating temperature range. The primary difference is packaging format: CD74ACT32M is supplied in tube packaging and is discontinued; CD74ACT32M96 is supplied in tape & reel format and remains in active production.

Q: Are there packaging compatibility concerns when substituting these parts? A: No. All substitute parts use 14-SOIC surface mount packaging with identical pinout and footprint. Packaging format differences (tube vs. tape & reel vs. cut tape) affect only procurement and handling, not PCB assembly compatibility.

Q: Does the 9ns propagation delay of onsemi and Fairchild parts affect compatibility with the original 12.1ns specification? A: No. Faster propagation delay is a performance improvement that does not create compatibility issues. Applications designed for 12.1ns delay will function correctly with 9ns delay parts.

Q: Which substitute offers the best availability? A: 74ACT32SCX from Fairchild Semiconductor shows the highest inventory level (48,707 pcs) among all listed substitutes, followed by CD74ACT32M96 from Texas Instruments (2,900 pcs).

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message