74AC08PC AND Gate IC Equivalent & Substitute Parts

Part Overview

The 74AC08PC is a 4-channel 2-input AND gate logic IC manufactured by onsemi in 14-MDIP packaging. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74AC08 series represents a standard logic gate function across multiple manufacturers, enabling direct functional substitution where electrical and mechanical parameters align.

Substiute Parts

74AC08PC

onsemiIn Stock: 1133974AC08PC Datasheet

Current PartRFQ

SN74AC08N

Texas InstrumentsIn Stock: 4475SN74AC08N Datasheet

DirectRFQ

CD74AC08E

Harris CorporationIn Stock: 1510CD74AC08E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74AC08PC is determined by the following critical parameters:

• Logic Function: All substitutes must implement 4-channel 2-input AND gate logic
• Electrical Specifications: Supply voltage range, quiescent current, output current, and propagation delay must be compatible with the application circuit
• Package Compatibility: 14-DIP through-hole mounting ensures mechanical interchangeability
• Base Product Series: All parts share the 74AC08 base product number, indicating functional equivalence within the 74AC logic family

Substitutes are classified as either direct equivalents (matching all key parameters) or similar alternatives (with acceptable parameter variations for specific applications).

Parameter Comparison

Engineering Selection Recommendations

SN74AC08N (Texas Instruments) is the primary direct substitute for 74AC08PC. This part maintains identical electrical specifications including supply voltage range (2V ~ 6V), quiescent current (2 µA maximum), and propagation delay (7.5ns @ 5V, 50pF). The SN74AC08N carries active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment. Packaging is mechanically equivalent (14-PDIP), enabling direct board-level substitution.

CD74AC08E (Harris Corporation) functions as a compatible alternative where extended operating temperature range (-55°C ~ 125°C) is required. This part exhibits slightly higher quiescent current (4 µA maximum) and propagation delay (8.7ns @ 5V, 50pF), with a narrower input logic level specification for the low state (0.3V ~ 1.65V). The CD74AC08E is obsolete and non-compliant with RoHS standards, making it suitable only for legacy system maintenance or applications where RoHS compliance is not mandated.

Frequently Asked Questions (FAQ)

Q: Can SN74AC08N directly replace 74AC08PC without circuit modification?

A: Yes. The SN74AC08N maintains identical electrical specifications and 14-DIP package compatibility, enabling direct pin-for-pin substitution without circuit redesign.

Q: What is the primary advantage of selecting SN74AC08N over CD74AC08E?

A: The SN74AC08N offers active product status, ROHS3 compliance, and lower quiescent current (2 µA vs. 4 µA), providing better long-term availability and regulatory compliance for new designs.

Q: Are there timing differences between 74AC08PC and its substitutes?

A: The SN74AC08N matches the 74AC08PC propagation delay specification (7.5ns @ 5V, 50pF). The CD74AC08E exhibits 8.7ns propagation delay, which may impact timing-critical applications requiring sub-nanosecond precision.

Q: Is the CD74AC08E suitable for new production designs?

A: No. The CD74AC08E is obsolete and RoHS non-compliant. It is appropriate only for legacy system support or applications where RoHS compliance is not required.

Q: What packaging considerations apply to these substitutes?

A: All three parts use 14-DIP (0.300", 7.62mm) through-hole packaging, ensuring mechanical interchangeability on standard DIP sockets and PCB layouts.

Q: Can these parts be used interchangeably in the same circuit?

A: SN74AC08N and 74AC08PC are fully interchangeable. CD74AC08E is compatible for applications not requiring strict timing or RoHS compliance, though its higher quiescent current and propagation delay should be verified against circuit specifications.