74F08SCX AND Gate IC Equivalent & Substitute Parts

Part Overview

The 74F08SCX is a 4-channel 2-input AND gate logic IC manufactured by onsemi in a 14-SOIC surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74F08 series provides standard AND gate functionality suitable for digital logic applications requiring reliable switching performance within the 4.5V to 5.5V supply voltage range.

Substiute Parts

74F08SCX

onsemiIn Stock: 1632974F08SCX Datasheet

Current PartRFQ

SN74F08D

Texas InstrumentsIn Stock: 2202SN74F08D Datasheet

DirectRFQ

SN74F08DR

Texas InstrumentsIn Stock: 4157SN74F08DR Datasheet

DirectRFQ

SN74F08NSR

Texas InstrumentsIn Stock: 5199SN74F08NSR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74F08SCX is determined by the following critical parameters:

• Logic Function: All substitute parts must implement 4-channel 2-input AND gate logic
• Electrical Specifications: Supply voltage (4.5V ~ 5.5V), output current (1mA, 20mA), input logic levels (0.8V low, 2V high), and propagation delay (5.6ns @ 5V, 50pF) must match exactly
• Operating Temperature Range: 0°C ~ 70°C
• Package Compatibility: 14-SOIC or 14-SO surface mount packages with compatible pinouts
• Regulatory Compliance: REACH Unaffected and EAR99 classification maintained across all substitutes

The 74F08 base product number defines the functional equivalence class. Substitutes are categorized as direct equivalents (identical package and specifications) or similar parts (compatible electrical performance with package variations).

Parameter Comparison

Engineering Selection Recommendations

SN74F08DR (Texas Instruments) is the primary recommended substitute. This part maintains active product status, ensuring long-term availability and supply chain stability. It is ROHS3 compliant and carries identical electrical specifications and package dimensions to the 74F08SCX. The tape and reel packaging format supports high-volume manufacturing environments.

SN74F08D (Texas Instruments) serves as a secondary option with Last Time Buy status. It provides identical electrical performance and package specifications but with limited future availability. This part is suitable for applications where existing inventory can be managed through the Last Time Buy window.

SN74F08NSR (Texas Instruments) is functionally equivalent with active product status and ROHS3 compliance. The package width differs (0.209" versus 0.154"), requiring PCB layout verification before implementation. This part is appropriate for designs where package footprint tolerance permits the dimensional variation.

All three Texas Instruments substitutes maintain regulatory compliance (REACH Unaffected, EAR99) and unlimited moisture sensitivity rating, matching the original 74F08SCX specifications.

Frequently Asked Questions (FAQ)

Q: Can SN74F08NSR be used as a direct replacement for 74F08SCX?

A: SN74F08NSR is electrically equivalent but has a different package width (0.209" versus 0.154"). PCB layout compatibility must be confirmed before substitution. The pinout and electrical performance are identical.

Q: What is the difference between SN74F08D and SN74F08DR?

A: Both parts are electrically identical with matching specifications and package dimensions. The primary difference is packaging format: SN74F08D uses tube packaging, while SN74F08DR uses tape and reel format. SN74F08DR is recommended for automated assembly processes.

Q: Why is the 74F08SCX listed as obsolete?

A: The 74F08SCX has reached end-of-life status with onsemi. Texas Instruments maintains active production of functionally equivalent 74F08 variants, providing continuity for applications requiring this logic function.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All Texas Instruments substitutes (SN74F08D, SN74F08DR, SN74F08NSR) are ROHS3 compliant. The original 74F08SCX does not specify RoHS status.

Q: Do the substitute parts have the same propagation delay?

A: Yes. All substitute parts maintain the same maximum propagation delay specification of 5.6ns at 5V with 50pF load, ensuring timing-critical applications remain compatible.

Q: What packaging options are available for 74F08 substitutes?

A: SN74F08D is available in tube packaging, while SN74F08DR and SN74F08NSR are supplied in tape and reel format. Package selection depends on manufacturing volume and assembly equipment requirements.