74ACTQ00SC NAND Gate IC Equivalent & Substitute Parts

Part Overview

The 74ACTQ00SC is a 4-channel 2-input NAND gate logic IC manufactured by onsemi in 14-SOIC surface mount packaging. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The 74ACT00 logic family provides standardized NAND gate functionality across multiple manufacturers, enabling direct substitution based on electrical and mechanical compatibility.

Substiute Parts

74ACTQ00SC

onsemiIn Stock: 156374ACTQ00SC Datasheet

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MC74ACT00DG

onsemiIn Stock: 1997MC74ACT00DG Datasheet

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MC74ACT00DR2G

onsemiIn Stock: 8922MC74ACT00DR2G Datasheet

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CD74ACT00M

Harris CorporationIn Stock: 2417CD74ACT00M Datasheet

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CD74ACT00M96

Harris CorporationIn Stock: 2942CD74ACT00M96 Datasheet

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SN74ACT00D

Texas InstrumentsIn Stock: 2164SN74ACT00D Datasheet

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SN74ACT00DR

Texas InstrumentsIn Stock: 59116SN74ACT00DR Datasheet

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SN74ACT00NSR

Texas InstrumentsIn Stock: 2985SN74ACT00NSR Datasheet

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SN74ACT00TDRQ1

Texas InstrumentsIn Stock: 3494SN74ACT00TDRQ1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74ACTQ00SC is determined by the following criteria:

Core Functional Requirements:

• Logic Type: NAND Gate (4 channels, 2 inputs per channel)
• Voltage Supply Range: 4.5V ~ 5.5V
• Input/Output Logic Levels: 0.8V (Low), 2V (High)
• Output Current: 24mA (High and Low)
• Package: 14-SOIC surface mount

Acceptable Variation Parameters:

• Quiescent Current: Up to 4 µA (main part: 2 µA)
• Propagation Delay: Up to 13.2ns @ 5V, 50pF (main part: 7.5ns)
• Operating Temperature: Extended ranges acceptable (-55°C ~ 125°C)
• Product Status: Active or Obsolete
• Compliance: RoHS3 Compliant or non-compliant

All substitute parts maintain identical logic functionality, pin configuration, and mechanical compatibility with the 14-SOIC package footprint.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Status, Full Compatibility):

SN74ACT00DR (Texas Instruments) and SN74ACT00TDRQ1 (Texas Instruments) are the preferred substitutes. Both maintain identical quiescent current (2 µA), matching propagation delay specifications, and are actively manufactured. SN74ACT00DR is suitable for standard industrial applications. SN74ACT00TDRQ1 extends the operating temperature range to 105°C and includes AEC-Q100 automotive qualification, making it appropriate for automotive and high-reliability applications.

Secondary Substitutes (Active Status, Minor Parameter Variation):

MC74ACT00DG and MC74ACT00DR2G (onsemi) are active alternatives with slightly elevated quiescent current (4 µA) and propagation delay (9ns). These remain within acceptable operating margins for most applications and offer extended temperature range (-55°C ~ 125°C).

Legacy Substitutes (Obsolete Status):

CD74ACT00M and CD74ACT00M96 (Harris Corporation) are obsolete parts with extended propagation delay (13.2ns) and non-compliant RoHS status. These are suitable only for legacy system maintenance where RoHS compliance is not required and timing margins accommodate the increased delay.

Package Consideration:

SN74ACT00NSR uses a 14-SO package (0.209" width) instead of the standard 14-SOIC (0.154" width). Verify PCB footprint compatibility before selection.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 74ACTQ00SC with any 74ACT00 variant?

A: Yes, all listed parts are functionally equivalent 74ACT00 NAND gate ICs. Substitution is valid provided the operating temperature range, quiescent current, and propagation delay specifications meet your application requirements. Verify package footprint compatibility with your PCB design.

Q: What is the difference between the onsemi and Texas Instruments versions?

A: Both manufacturers produce functionally identical NAND gate logic. The primary differences are quiescent current (onsemi MC74ACT00 series: 4 µA; Texas Instruments SN74ACT00 series: 2 µA) and propagation delay (onsemi: 9ns; Texas Instruments: 9ns). Texas Instruments offers active production status with multiple packaging options.

Q: Is the SN74ACT00TDRQ1 suitable for my application?

A: SN74ACT00TDRQ1 is appropriate if your application requires automotive-grade qualification (AEC-Q100) or extended operating temperature range (-40°C ~ 105°C). For standard industrial applications within -40°C ~ 85°C, SN74ACT00DR is sufficient.

Q: What does the package designation mean?

A: The 14-SOIC (0.154", 3.90mm Width) is the standard small-outline integrated circuit package. SN74ACT00NSR uses 14-SO (0.209", 5.30mm Width), which is wider. Confirm your PCB footprint matches the selected package before ordering.

Q: Why is the 74ACTQ00SC obsolete?

A: The 74ACTQ00SC is no longer manufactured by onsemi. Active alternatives from Texas Instruments (SN74ACT00DR, SN74ACT00TDRQ1) and onsemi (MC74ACT00DG, MC74ACT00DR2G) provide equivalent functionality with current production support.

Q: Can I use a part with higher propagation delay?

A: Yes, if your circuit timing margins accommodate the increased delay. The 74ACTQ00SC specifies 7.5ns; substitutes range from 9ns to 13.2ns. Verify that your system clock frequency and signal timing requirements allow for this variation.

Q: Are all these parts RoHS compliant?

A: Most active substitutes (Texas Instruments and onsemi MC74ACT00 series) are ROHS3 Compliant. Harris Corporation CD74ACT00 variants are RoHS non-compliant. Verify compliance requirements for your application and supply chain.