74ACTQ02SJ NOR Gate IC Equivalent & Substitute Parts

Part Overview

The 74ACTQ02SJ is a 4-channel 2-input NOR gate logic IC manufactured by onsemi in a 14-SOP surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The 74ACTQ02SJ operates within a 4.5V to 5.5V supply voltage range and is suitable for standard TTL-compatible logic applications requiring NOR gate functionality.

Key Parameters

Parameter	Value
Logic Type	NOR Gate
Number of Circuits	4
Number of Inputs	2
Voltage - Supply	4.5V ~ 5.5V
Current - Output High, Low	24mA, 24mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ 5V, 50pF	7.5ns
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	14-SOIC (0.209", 5.30mm Width)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the 74ACTQ02SJ is determined by the following critical parameters:

Logic Function: NOR gate with 4 channels and 2 inputs per channel
Supply Voltage Compatibility: 4.5V ~ 5.5V operating range
Output Drive Capability: 24mA output current (high and low)
Input Logic Thresholds: 0.8V low, 2V high
Package Type: 14-pin surface mount SOIC configuration
Mounting Technology: Surface mount compatibility

The substitute parts CD74ACT02M and CD74ACT02M96 meet these core functional and electrical requirements. Both are manufactured by Harris Corporation and maintain identical logic configuration, supply voltage range, output drive capability, and input logic thresholds. Package compatibility is confirmed through the 14-SOIC standard footprint.

Parameter Comparison

Parameter	74ACTQ02SJ (onsemi)	CD74ACT02M (Harris)	CD74ACT02M96 (Harris)
Logic Type	NOR Gate	NOR Gate	NOR Gate
Number of Circuits	4	4	4
Number of Inputs	2	2	2
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Quiescent (Max)	2 µA	4 µA	4 µA
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA
Input Logic Level - Low	0.8V	0.8V	0.8V
Input Logic Level - High	2V	2V	2V
Max Propagation Delay @ 5V, 50pF	7.5ns	12.2ns	12.2ns
Operating Temperature	-40°C ~ 85°C	-55°C ~ 125°C	-55°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Supplier Device Package	14-SOP	14-SOIC	14-SOIC
Product Status	Obsolete	Obsolete	Obsolete

Engineering Selection Recommendations

Both CD74ACT02M and CD74ACT02M96 are functionally equivalent to the 74ACTQ02SJ for NOR gate logic applications. Selection between these substitutes should be based on the following factors:

CD74ACT02M: Supplied in tube packaging, suitable for standard production environments where component organization and handling efficiency are priorities.

CD74ACT02M96: Supplied in bulk packaging, appropriate for high-volume manufacturing or applications where individual component packaging is not a constraint.

Both substitutes provide extended operating temperature range (-55°C ~ 125°C) compared to the original part (-40°C ~ 85°C), offering improved thermal performance margin. Propagation delay is slightly higher at 12.2ns versus 7.5ns; this difference is acceptable in most standard logic applications but should be verified for timing-critical designs.

All three parts are classified as obsolete. The Harris Corporation substitutes maintain identical electrical specifications for supply voltage, output drive capability, and input logic thresholds, ensuring direct functional replacement in existing designs.

Frequently Asked Questions (FAQ)

Q: Can CD74ACT02M and CD74ACT02M96 be used interchangeably with 74ACTQ02SJ?

A: Yes. Both substitutes maintain identical logic function (4-channel 2-input NOR gate), supply voltage range (4.5V ~ 5.5V), output drive capability (24mA), and input logic thresholds (0.8V low, 2V high). The 14-SOIC package footprint is compatible with the original 14-SOP package for surface mount applications.

**Q: What is the

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