74ACTQ02PC Equivalent & Substitute Parts

Part Overview

The 74ACTQ02PC is a NOR Gate IC featuring 4 channels with 2 inputs per channel in a 14-MDIP package, manufactured by onsemi. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance, repairs, and legacy product support. The 74ACTQ02PC operates within the 4.5V to 5.5V supply voltage range and is designed for through-hole mounting applications requiring standard logic gate functionality.

Substiute Parts

74ACTQ02PC

onsemiIn Stock: 75574ACTQ02PC Datasheet

Current PartRFQ

CD74ACT02E

Harris CorporationIn Stock: 5584CD74ACT02E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74ACTQ02PC is determined by the following critical parameters:

• Logic function: 4-channel NOR gate with 2 inputs per channel
• Supply voltage range: 4.5V ~ 5.5V
• Output drive capability: 24mA high and low
• Input logic thresholds: 0.8V low, 2V high
• Package type: 14-DIP through-hole configuration
• Propagation delay performance: Maximum 12.2ns at 5V, 50pF load

The CD74ACT02E from Harris Corporation meets these substitution criteria. Both parts share identical logic architecture, pin configuration, and electrical operating parameters within acceptable tolerances for standard logic applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 74ACTQ02PC and CD74ACT02E are classified as obsolete components. Selection between these parts should be based on the following factors:

The 74ACTQ02PC offers faster propagation delay at 7.5ns compared to the CD74ACT02E at 12.2ns, making it preferable for timing-critical applications. The 74ACTQ02PC also exhibits lower quiescent current at 2 µA versus 4 µA for the CD74ACT02E.

The CD74ACT02E provides an extended operating temperature range of -55°C to 125°C compared to the 74ACTQ02PC range of -40°C to 85°C, making it suitable for applications requiring broader temperature performance. The CD74ACT02E is available in higher inventory quantities (5523 pieces) relative to the 74ACTQ02PC (693 pieces).

Both parts share identical pin configuration, supply voltage requirements, output drive capability, and input logic thresholds, ensuring direct functional compatibility in 14-DIP through-hole applications.

Frequently Asked Questions (FAQ)

Q: Can the CD74ACT02E directly replace the 74ACTQ02PC in existing designs?

A: Yes. Both parts are pin-compatible 4-channel NOR gate ICs in 14-DIP packages with identical supply voltage ranges (4.5V ~ 5.5V), output drive specifications (24mA), and input logic thresholds. Direct substitution is electrically valid for standard logic applications.

Q: What are the key differences between these two parts?

A: The primary differences are propagation delay (74ACTQ02PC: 7.5ns vs. CD74ACT02E: 12.2ns), quiescent current (74ACTQ02PC: 2 µA vs. CD74ACT02E: 4 µA), and operating temperature range (74ACTQ02PC: -40°C to 85°C vs. CD74ACT02E: -55°C to 125°C). The 74ACTQ02PC is faster and more power-efficient, while the CD74ACT02E supports extended temperature operation.

Q: Which part should I select for timing-sensitive applications?

A: The 74ACTQ02PC is recommended for timing-sensitive applications due to its faster maximum propagation delay of 7.5ns at 5V with a 50pF load, compared to 12.2ns for the CD74ACT02E.

Q: Are there any compliance or certification differences?

A: The 74ACTQ02PC has REACH Unaffected status. The CD74ACT02E is RoHS non-compliant. Both parts carry EAR99 ECCN classification and share the same HTSUS code (8542.39.0001).

Q: What packaging options are available?

A: Both parts are supplied in 14-DIP through-hole packages with 0.300" (7.62mm) spacing. The 74ACTQ02PC is available without specified packaging designation, while the CD74ACT02E is supplied in tube packaging.