74ACTQ08SJ AND Gate IC Equivalent & Substitute Parts

Part Overview

The 74ACTQ08SJ is a 4-channel 2-input AND gate logic IC manufactured by onsemi in 14-SOP surface mount packaging. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The 74ACTQ08SJ operates within the 74ACT logic family standard, which defines compatible electrical and mechanical parameters for direct substitution across qualified alternatives.

Substiute Parts

74ACTQ08SJ

onsemiIn Stock: 114174ACTQ08SJ Datasheet

Current PartRFQ

CD74ACT08M

Harris CorporationIn Stock: 1806CD74ACT08M Datasheet

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CD74ACT08M96

Texas InstrumentsIn Stock: 2657CD74ACT08M96 Datasheet

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SN74ACT08D

Texas InstrumentsIn Stock: 3414SN74ACT08D Datasheet

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SN74ACT08DR

Texas InstrumentsIn Stock: 2255SN74ACT08DR Datasheet

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SN74ACT08IDREP

Texas InstrumentsIn Stock: 751SN74ACT08IDREP Datasheet

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SN74ACT08NSR

Texas InstrumentsIn Stock: 1926SN74ACT08NSR Datasheet

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SN74AHCT08NSR

Texas InstrumentsIn Stock: 5475SN74AHCT08NSR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74ACTQ08SJ is determined by strict adherence to the following electrical and mechanical parameters:

Core Substitution Criteria:

• Logic type: AND Gate with 4 channels and 2 inputs per channel
• Supply voltage range: 4.5V ~ 5.5V
• Output current capability: 24mA high and low
• Input logic thresholds: 0.8V low, 2V high
• Surface mount packaging: 14-SOIC configuration
• Base product number: 74ACT08 or 74ACTQ08 series

Acceptable Variations:

• Operating temperature range may extend beyond -40°C ~ 85°C (wider ranges are acceptable)
• Quiescent current specifications may vary within the 74ACT family
• Propagation delay specifications may vary (faster performance is acceptable)
• Packaging format variations within 14-SOIC standard (width tolerance 0.154" to 0.209")
• Product status may differ (active, discontinued, or obsolete)
• RoHS compliance status may vary

Non-Substitutable Variations:

• Output current less than 24mA
• Supply voltage range narrower than 4.5V ~ 5.5V
• Different logic function or channel/input configuration
• Non-surface mount packaging

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

SN74ACT08DR, SN74ACT08D, SN74ACT08IDREP, and SN74ACT08NSR are direct electrical equivalents to the 74ACTQ08SJ. All maintain identical supply voltage, output current, input logic thresholds, and operating temperature range. These parts are manufactured by Texas Instruments and carry ROHS3 compliance certification. SN74ACT08DR and SN74ACT08NSR maintain active product status, ensuring long-term availability and supply chain stability.

Secondary Substitutes (Extended Operating Range):

CD74ACT08M96 (Texas Instruments, active status) and CD74ACT08M (Harris Corporation, obsolete) provide extended operating temperature range (-55°C ~ 125°C) while maintaining all critical electrical parameters. CD74ACT08M96 is ROHS3 compliant and actively supported. These parts are suitable when wider temperature performance is required.

Limited Substitution (Output Current Reduction):

SN74AHCT08NSR operates within the 74AHCT logic family and meets all core substitution criteria except output current specification (8mA versus 24mA). This part is suitable only for applications where reduced output drive capability is acceptable. It offers improved propagation delay (7.9ns) and extended operating temperature range (-40°C ~ 125°C).

Avoid:

CD74ACT08M carries RoHS non-compliant status and obsolete product classification, limiting its suitability for new designs despite electrical equivalence.

Frequently Asked Questions (FAQ)

Q: Can SN74ACT08DR directly replace 74ACTQ08SJ in existing designs?

A: Yes. SN74ACT08DR meets all electrical and mechanical substitution criteria: identical supply voltage (4.5V ~ 5.5V), output current (24mA/24mA), input logic thresholds, operating temperature (-40°C ~ 85°C), and 14-SOIC surface mount packaging. The part is actively manufactured by Texas Instruments and ROHS3 compliant.

Q: What is the difference between 74ACT and 74AHCT logic families?

A: Both families operate within 4.5V ~ 5.5V supply range and share identical input logic thresholds. The primary difference is output current capability: 74ACT provides 24mA drive, while 74AHCT provides 8mA. The 74AHCT family offers faster propagation delay and extended operating temperature range. Substitution from 74ACT to 74AHCT is acceptable only when reduced output drive meets application requirements.

Q: Are packaging variations between 14-SOP and 14-SOIC acceptable?

A: Both 14-SOP and 14-SOIC are surface mount packages with identical pin configurations and electrical compatibility. Physical dimensions vary slightly (14-SOP width 5.30mm versus 14-SOIC width 0.154" to 0.209"), but both are compatible with standard PCB layouts designed for 14-pin surface mount logic ICs. Verify PCB footprint compatibility before substitution.

Q: Why is CD74ACT08M96 preferred over CD74ACT08M?

A: CD74ACT08M96 is actively manufactured by Texas Instruments and carries ROHS3 compliance certification, ensuring regulatory compliance and supply chain continuity. CD74ACT08M is obsolete and RoHS non-compliant, limiting its suitability for new designs and future procurement.

Q: Can I use SN74AHCT08NSR as a direct replacement?

A: SN74AHCT08NSR is electrically compatible for logic function but provides reduced output current (8mA versus 24mA). Substitution is acceptable only when the application does not require full 24mA output drive capability. Verify load requirements before selection.

Q: What inventory status should I prioritize?

A: Active product status (SN74ACT08DR, SN74ACT08IDREP, SN74ACT08NSR, CD74ACT08M96, SN74AHCT08NSR) ensures long-term availability and supply chain stability. Discontinued or obsolete parts carry procurement risk and should be avoided for new designs.