74ACT32PC OR Gate IC Equivalent & Substitute Parts

Part Overview

The 74ACT32PC is a 4-channel 2-input OR 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 74ACT32 series maintains consistent functional performance across multiple manufacturers, enabling direct substitution based on electrical and mechanical parameter compatibility.

Substiute Parts

74ACT32PC

onsemiIn Stock: 179774ACT32PC Datasheet

Current PartRFQ

CD74ACT32E

Harris CorporationIn Stock: 3350CD74ACT32E Datasheet

SimilarRFQ

SN74ACT32N

Texas InstrumentsIn Stock: 3847SN74ACT32N Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74ACT32PC is determined by strict alignment of electrical and mechanical parameters. All substitute parts must maintain:

• Identical logic function (4-channel 2-input OR gate)
• Matching voltage supply range (4.5V ~ 5.5V)
• Equivalent output current specifications (24mA / 24mA)
• Identical input logic thresholds (0.8V low, 2V high)
• Compatible package form factor (14-DIP through-hole)
• Propagation delay within acceptable operating margins

The 74ACT32 base product number defines the functional equivalence class. Substitutes are grouped by manufacturer while maintaining these core electrical and mechanical requirements.

Parameter Comparison

Engineering Selection Recommendations

SN74ACT32N (Texas Instruments) is the primary substitute for new designs and ongoing procurement. This part maintains identical electrical specifications to the 74ACT32PC, offers active product status ensuring long-term availability, and meets ROHS3 compliance requirements. The lower quiescent current (2 µA vs 4 µA) provides improved power efficiency without compromising functional compatibility.

CD74ACT32E (Harris Corporation) serves as an alternative substitute where inventory constraints exist. This part meets all electrical and mechanical requirements but carries obsolete product status and RoHS non-compliance designation. The propagation delay specification (12.1ns) remains within acceptable operating margins for most applications. Extended operating temperature range (-55°C ~ 125°C) may benefit designs requiring broader thermal operation.

Both substitutes maintain identical pin configuration, package footprint, and electrical interface characteristics, enabling direct board-level replacement without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can SN74ACT32N directly replace 74ACT32PC without circuit changes? A: Yes. Both parts share identical logic function, pin configuration, voltage supply range, output current ratings, and input logic thresholds. The 14-DIP through-hole package is mechanically and electrically compatible.

Q: What is the significance of the propagation delay difference between CD74ACT32E (12.1ns) and 74ACT32PC (9ns)? A: The CD74ACT32E propagation delay remains within acceptable margins for standard logic applications. Selection depends on specific timing requirements. For applications with tight timing constraints, SN74ACT32N or 74ACT32PC are preferred due to matching 9ns specifications.

Q: Why is SN74ACT32N recommended over CD74ACT32E? A: SN74ACT32N carries active product status, ensuring continued availability and manufacturing support. It also meets ROHS3 compliance, whereas CD74ACT32E is RoHS non-compliant. Both are electrically equivalent; the recommendation reflects supply chain and regulatory considerations.

Q: Are there package or mounting differences between these substitutes? A: No. All three parts use identical 14-DIP (0.300", 7.62mm) through-hole packaging. Board layout and socket compatibility are maintained across all substitutes.

Q: Does the lower quiescent current of SN74ACT32N (2 µA vs 4 µA) affect circuit operation? A: No. Quiescent current represents standby power consumption and does not affect logic function or output characteristics. The lower specification in SN74ACT32N provides improved power efficiency.

Q: What is the operating temperature consideration for CD74ACT32E? A: CD74ACT32E supports -55°C ~ 125°C operation, compared to -40°C ~ 85°C for 74ACT32PC and SN74ACT32N. Selection depends on application thermal requirements. Standard industrial applications typically operate within -40°C ~ 85°C range.