74ACT08PC Equivalent & Substitute Parts

Part Overview

The 74ACT08PC is a 4-channel 2-input AND gate logic IC manufactured by onsemi in a 14-MDIP package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The 74ACT08 series provides standard AND gate functionality suitable for digital logic applications requiring TTL-compatible switching at 4.5V to 5.5V supply voltage.

Substiute Parts

74ACT08PC

onsemiIn Stock: 301774ACT08PC Datasheet

Current PartRFQ

CD74ACT08E

Harris CorporationIn Stock: 1608CD74ACT08E Datasheet

SimilarRFQ

SN74ACT08N

Texas InstrumentsIn Stock: 3469SN74ACT08N Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74ACT08PC 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 range (4.5V ~ 5.5V), output current capability (24mA), and input logic levels must be compatible
• Package Compatibility: 14-DIP through-hole package with 0.300" (7.62mm) pitch
• Series Compatibility: All parts belong to the 74ACT logic family

The substitute parts CD74ACT08E and SN74ACT08N meet these criteria and share the same base product number (74ACT08), ensuring functional and mechanical interchangeability within the specified electrical operating range.

Parameter Comparison

Engineering Selection Recommendations

SN74ACT08N (Texas Instruments) is the preferred substitute for new designs and ongoing procurement:

• Active product status ensures long-term availability and manufacturing support
• ROHS3 compliance meets current environmental and regulatory requirements
• Identical propagation delay (9ns) and operating temperature range to the original 74ACT08PC
• Lower quiescent current (2 µA vs. 4 µA) provides improved power efficiency
• Equivalent electrical performance across all critical parameters

CD74ACT08E (Harris Corporation) is a functional equivalent suitable for direct replacement in existing applications:

• Meets all electrical specifications and package requirements
• Extended operating temperature range (-55°C ~ 125°C) provides additional thermal margin
• Obsolete status and RoHS non-compliance may limit suitability for new designs or regulated applications
• Slightly higher propagation delay (12.9ns) is acceptable for most general-purpose logic applications

Frequently Asked Questions (FAQ)

Q: Can SN74ACT08N directly replace 74ACT08PC in existing circuits?

A: Yes. Both parts share identical supply voltage range, output current capability, input logic levels, and 14-DIP package configuration. The SN74ACT08N meets or exceeds the electrical performance of the 74ACT08PC.

Q: What is the difference between CD74ACT08E and SN74ACT08N?

A: Both are functional equivalents with identical logic function and package. Key differences are product status (CD74ACT08E is obsolete; SN74ACT08N is active), RoHS compliance (SN74ACT08N is ROHS3 compliant), and propagation delay (CD74ACT08E: 12.9ns; SN74ACT08N: 9ns). For new designs, SN74ACT08N is recommended.

Q: Are these parts pin-compatible?

A: Yes. All three parts use the 14-DIP (0.300", 7.62mm) package with identical pinout, ensuring mechanical and electrical compatibility in through-hole applications.

Q: Does propagation delay affect substitution suitability?

A: Propagation delay differences (9ns vs. 12.9ns) are within acceptable tolerances for standard logic applications. Applications with timing-critical requirements should verify that the 12.9ns delay of CD74ACT08E meets system specifications.

Q: What is the significance of RoHS compliance?

A: ROHS3 compliance (SN74ACT08N) indicates the part meets current environmental regulations and is suitable for applications subject to RoHS requirements. RoHS non-compliant parts (CD74ACT08E) may not be acceptable for regulated industries or new product certifications.

Q: Can I use these parts interchangeably in production?

A: Yes, within the specified electrical and thermal operating ranges. However, design validation should confirm that the substitute part meets all system-level requirements, particularly for timing-sensitive applications or regulated environments.