74ACT02PC NOR Gate IC Equivalent & Substitute Parts

Part Overview

The 74ACT02PC is a 4-channel 2-input NOR gate logic IC manufactured by onsemi in a 14-MDIP package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74ACT02 series provides standard logic gating functionality suitable for digital circuit applications requiring NOR logic operations.

Substiute Parts

74ACT02PC

onsemiIn Stock: 96174ACT02PC Datasheet

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CD74ACT02E

Harris CorporationIn Stock: 5584CD74ACT02E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74ACT02PC is determined by the following critical parameters:

• Logic Function: 4-channel 2-input NOR gate configuration
• Voltage Supply: 4.5V ~ 5.5V compatibility
• Output Drive Capability: 24mA output current (high and low)
• Input Logic Levels: 0.8V (low) and 2V (high) thresholds
• Package Form Factor: 14-DIP through-hole mounting
• Base Series Compatibility: 74ACT logic family

The CD74ACT02E manufactured by Harris Corporation meets these core substitution criteria, maintaining functional and electrical equivalence within the 74ACT series.

Parameter Comparison

Engineering Selection Recommendations

Both the 74ACT02PC and CD74ACT02E are classified as obsolete components. Selection between these parts should be based on the following factors:

Propagation Delay: The 74ACT02PC exhibits a maximum propagation delay of 9.5ns at 5V with 50pF load, compared to 12.2ns for the CD74ACT02E. Applications with timing-critical requirements should account for this 2.7ns difference.

Operating Temperature Range: The CD74ACT02E supports an extended temperature range of -55°C to 125°C, versus -40°C to 85°C for the 74ACT02PC. Selection depends on the target application environment.

Compliance Status: The CD74ACT02E is noted as RoHS non-compliant. The 74ACT02PC compliance status should be verified against specific procurement requirements.

Availability: Current inventory levels differ between suppliers. The CD74ACT02E shows higher stock availability (5523 pcs) compared to the 74ACT02PC (871 pcs).

Frequently Asked Questions (FAQ)

Q: Can the CD74ACT02E directly replace the 74ACT02PC in existing designs?

A: Yes, the CD74ACT02E is functionally equivalent for the core NOR gate logic operation. Both parts share identical logic configuration (4 channels, 2 inputs), voltage supply range (4.5V ~ 5.5V), output drive capability (24mA), and input logic thresholds. The 14-DIP package form factor is identical, enabling direct through-hole mounting substitution.

Q: What is the significance of the propagation delay difference?

A: The 74ACT02PC has a maximum propagation delay of 9.5ns versus 12.2ns for the CD74ACT02E at 5V with 50pF load. This 2.7ns difference is relevant only for timing-critical applications. For general logic gating applications, both parts meet standard 74ACT series performance expectations.

Q: Are there temperature range considerations for substitution?

A: The CD74ACT02E operates across -55°C to 125°C, providing a wider range than the 74ACT02PC (-40°C to 85°C). If the application operates within the 74ACT02PC range, either part is suitable. Applications requiring extended low-temperature operation below -40°C or high-temperature operation above 85°C should use the CD74ACT02E.

Q: What packaging differences exist between these parts?

A: Both parts use 14-DIP (0.300", 7.62mm) through-hole packages. The 74ACT02PC is supplied in standard packaging, while the CD74ACT02E is supplied in tube packaging. This affects handling and storage but does not impact electrical or mechanical compatibility.

Q: Why are both parts classified as obsolete?

A: Both the 74ACT02PC and CD74ACT02E are obsolete products. Modern designs typically use surface-mount alternatives or newer logic families. However, these parts remain available through inventory channels for legacy system support and maintenance applications.