CD74ACT08M AND Gate IC Equivalent & Substitute Parts

Part Overview

The CD74ACT08M is a 4-channel 2-input AND gate logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This part is currently discontinued at DiGi Electronics, making substitute parts necessary for ongoing production and maintenance applications. The 74ACT08 logic family provides standard AND gate functionality across multiple manufacturers and packaging options, enabling direct functional replacement when electrical and mechanical parameters align.

Key Parameters

Parameter	Value
Logic Type	AND Gate
Number of Circuits	4
Number of Inputs	2
Voltage Supply Range	4.5V ~ 5.5V
Output Current (High/Low)	24mA / 24mA
Input Logic Level Low	0.8V
Input Logic Level High	2V
Max Propagation Delay	12.9ns @ 5V, 50pF
Operating Temperature Range	-55°C ~ 125°C
Package Type	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CD74ACT08M is determined by strict equivalence across the following parameters: logic type (AND gate), circuit count (4 channels), input count (2 inputs per channel), supply voltage range (4.5V ~ 5.5V), output current capability (24mA high/low), input logic thresholds (0.8V low, 2V high), package type (14-SOIC), and mounting method (surface mount). All substitute parts maintain identical functional specifications and package dimensions, differing only in manufacturer, packaging format (tube, tape & reel, or cut tape), and operating temperature range. Propagation delay specifications vary between manufacturers but remain within acceptable logic timing parameters for standard applications.

Parameter Comparison

Part Number	Manufacturer	Packaging	Product Status	Voltage Supply	Output Current	Propagation Delay	Operating Temp	Inventory
CD74ACT08M	Texas Instruments	Tube	Discontinued	4.5V ~ 5.5V	24mA / 24mA	12.9ns @ 5V, 50pF	-55°C ~ 125°C	1796 Pcs
CD74ACT08M96	Texas Instruments	Tape & Reel	Active	4.5V ~ 5.5V	24mA / 24mA	12.9ns @ 5V, 50pF	-55°C ~ 125°C	2614 Pcs
74ACT08SC	onsemi	Tube	Active	4.5V ~ 5.5V	24mA / 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	1505 Pcs
74ACT08SCX	onsemi	Cut Tape & Digi-Reel	Active	4.5V ~ 5.5V	24mA / 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	15691 Pcs
MC74ACT08DG	onsemi	Tube	Active	4.5V ~ 5.5V	24mA / 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	3620 Pcs
MC74ACT08DR2G	onsemi	Tape & Reel	Active	4.5V ~ 5.5V	24mA / 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	40300 Pcs

Engineering Selection Recommendations

CD74ACT08M96 serves as the direct Texas Instruments equivalent, maintaining identical electrical specifications and extended operating temperature range (-55°C ~ 125°C) while offering active product status and higher inventory availability in tape & reel packaging format.

onsemi alternatives (74ACT08SC, 74ACT08SCX, MC74ACT08DG, MC74ACT08DR2G) are functionally equivalent with faster propagation delay (9ns versus 12.9ns) and narrower operating temperature range (-40°C ~ 85°C). These parts are suitable for applications within the -40°C ~ 85°C temperature window. MC74ACT08DR2G in tape & reel format offers the highest inventory level (40300 pcs) among all substitutes. All substitute parts maintain ROHS3 compliance, MSL rating 1, and identical package dimensions.

Selection between packaging formats (tube, tape & reel, cut tape) depends on assembly process requirements and volume needs. All parts share identical 14-SOIC package geometry and surface mount mounting type.

Frequently Asked Questions (FAQ)

Q: Can CD74ACT08M be replaced with onsemi 74ACT08SC? A: Yes. Both parts share identical logic configuration (4-channel 2-input AND gate), supply voltage range (4.5V ~ 5.5V), output current (24mA), input logic thresholds, and 14-SOIC package dimensions. The onsemi part operates within -40°C ~ 85°C temperature range, which is narrower than the original -55°C ~ 125°C specification.

Q: What is the difference between 74ACT08SCX and MC74ACT08DG? A: Both are onsemi 74ACT08 logic gates with identical electrical specifications. The primary difference is packaging format: 74ACT08SCX is supplied in cut tape & Digi-Reel format, while MC74ACT08DG is supplied in tube format. Electrical performance and package dimensions are identical.

Q: Is CD74ACT08M96 a direct replacement for CD74ACT08M? A: Yes. CD74ACT08M96 is the active production equivalent from Texas Instruments with identical electrical specifications, extended temperature range, and 14-SOIC package. The only difference is packaging format (tape & reel versus tube).

Q: Can these parts be used in applications requiring -55°C operation? A: CD74ACT08M and CD74ACT08M96 support -55°C ~ 125°C operation. onsemi alternatives (74ACT08SC, 74ACT08SCX, MC74ACT08DG, MC74ACT08DR2G) operate only within -40°C ~ 85°C range and are not suitable for applications requiring -55°C operation.

Q: Do all substitute parts have the same pin configuration? A: Yes. All parts use identical 14-SOIC package with matching pin assignments, enabling direct PCB-level substitution without layout modifications.

Q: What packaging format should be selected for high-volume assembly? A: Tape & reel format (CD74ACT08M96, MC74ACT08DR2G) is standard for automated pick-and-place assembly. Cut tape & Digi-Reel (74ACT08SCX) supports both manual and automated processes. Tube format is suitable for lower-volume or manual assembly operations.

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