CD74ACT08MG4 Equivalent & Substitute Parts

Part Overview

The CD74ACT08MG4 is a 4-channel 2-input AND gate logic IC manufactured by Texas Instruments in a 14-SOIC surface mount package. This part is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design and production requirements. 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
Current Output (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
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CD74ACT08MG4 is determined by strict equivalence across the following critical parameters:

Logic function: 4-channel 2-input AND gate
Package type: 14-SOIC form factor
Voltage supply range: 4.5V ~ 5.5V
Output current capability: 24mA high and low
Input logic thresholds: 0.8V low, 2V high
Mounting type: Surface mount

Substitute parts must maintain identical logic functionality, pinout compatibility, and electrical performance within the specified voltage and current ranges. Packaging format (tube, tape & reel, cut tape) does not affect functional equivalence but impacts procurement and assembly workflows.

Parameter Comparison

Part Number	Manufacturer	Product Status	Packaging	Voltage Supply	Output Current	Propagation Delay	Operating Temp	RoHS Status	Inventory
CD74ACT08MG4	Texas Instruments	Discontinued	Tube	4.5V ~ 5.5V	24mA / 24mA	12.9ns @ 5V, 50pF	-55°C ~ 125°C	ROHS3 Compliant	845 Pcs
CD74ACT08M96	Texas Instruments	Active	Tape & Reel	4.5V ~ 5.5V	24mA / 24mA	12.9ns @ 5V, 50pF	-55°C ~ 125°C	ROHS3 Compliant	2614 Pcs
CD74ACT08M	Harris Corporation	Obsolete	Tube	4.5V ~ 5.5V	24mA / 24mA	12.9ns @ 5V, 50pF	-55°C ~ 125°C	RoHS Non-Compliant	1796 Pcs
74ACT08SC	onsemi	Active	Tube	4.5V ~ 5.5V	24mA / 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	ROHS3 Compliant	1505 Pcs
74ACT08SCX	onsemi	Active	Cut Tape & Digi-Reel	4.5V ~ 5.5V	24mA / 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	ROHS3 Compliant	15691 Pcs
MC74ACT08DG	onsemi	Active	Tube	4.5V ~ 5.5V	24mA / 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	ROHS3 Compliant	3620 Pcs
MC74ACT08DR2G	onsemi	Active	Tape & Reel	4.5V ~ 5.5V	24mA / 24mA	9ns @ 5V, 50pF	-40°C ~ 85°C	ROHS3 Compliant	40300 Pcs

Engineering Selection Recommendations

CD74ACT08M96 is the primary substitute for CD74ACT08MG4. Both parts are manufactured by Texas Instruments, maintain identical electrical specifications including 12.9ns propagation delay, and are ROHS3 compliant. The difference is packaging format: CD74ACT08M96 is supplied in tape & reel format versus tube, with higher current inventory availability (2614 Pcs).

onsemi alternatives (74ACT08SC, 74ACT08SCX, MC74ACT08DG, MC74ACT08DR2G) are functionally equivalent with improved propagation delay of 9ns and full ROHS3 compliance. These parts operate within the same voltage supply range and output current specifications. Operating temperature range is narrower (-40°C ~ 85°C versus -55°C ~ 125°C), which may be a constraint for extended temperature applications. MC74ACT08DR2G offers the highest inventory (40300 Pcs) in tape & reel packaging.

CD74ACT08M (Harris Corporation) is obsolete and RoHS non-compliant, making it unsuitable for new designs requiring regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can I use 74ACT08SC or 74ACT08SCX as a direct replacement for CD74ACT08MG4?

A: Yes, functionally. Both parts share identical logic function, pinout, voltage supply range, and output current specifications. The 14-SOIC package is mechanically identical. However, the operating temperature range is narrower (-40°C ~ 85°C versus -55°C ~ 125°C). If your application requires operation below -40°C or above 85°C, these onsemi parts are not suitable.

Q: What is the difference between CD74ACT08M96 and MC74ACT08DR2G?

A: Both are functionally equivalent AND gate ICs in 14-SOIC packages. CD74ACT08M96 is Texas Instruments manufacture with 12.9ns propagation delay. MC74ACT08DR2G is onsemi manufacture with 9ns propagation delay (faster). CD74ACT08M96 supports the full -55°C ~ 125°C temperature range, while MC74ACT08DR2G operates -40°C ~ 85°C. Choose based on temperature requirements and propagation delay criticality.

Q: Does packaging format (tube, tape & reel, cut tape) affect electrical performance?

A: No. Packaging format affects only procurement, storage, and assembly handling. Electrical specifications and functional performance are identical across all packaging options for the same part number variant.

Q: Is CD74ACT08M from Harris Corporation a viable substitute?

A: No. This part is obsolete and RoHS non-compliant. It does not meet current regulatory requirements for new designs or production.

Q: Which substitute has the best inventory availability?

A: MC74ACT08DR2G (onsemi) has the highest inventory at 40300 Pcs in tape & reel packaging, followed by 74ACT08SCX at 15691 Pcs in cut tape format.

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