74ACT02B

Overview

The STMicroelectronics 74ACT02B is a quad 2-input NOR gate fabricated using advanced high-speed CMOS technology. It operates within a supply voltage range of 4.5V to 5.5V and features symmetrical output impedance with a minimum drive capability of 24mA. The device provides balanced propagation delays, typically 5ns at 5V, and includes protection circuits against static discharge for 2kV ESD immunity. It is designed for direct interfacing with TTL, NMOS, and CMOS systems.

Feature Summary

• Advanced high-speed CMOS fabrication enables low power dissipation and stable output performance.
• Symmetrical output impedance ensures consistent drive strength for both high and low states.
• Integrated protection circuits provide robust immunity against static discharge and transient excess voltage.

Applications

• High-speed digital logic processing
• TTL to CMOS system interfacing
• Transmission line driving applications

Procurement Notes

Verify the specific package variant required, as the base part number corresponds to multiple physical packages including DIP-14, SO-14, and TSSOP-14. Confirm that the selected ordering suffix matches the desired mechanical footprint and tape-and-reel availability. Ensure compatibility with existing board layouts before finalizing procurement orders.

Selection Notes

Select this component when a quad 2-input NOR function is required in 5V logic environments. It serves as a drop-in replacement for standard 74 series devices while offering improved speed and lower power consumption. Consider the available package options based on space constraints and assembly requirements.

Part Context

This component belongs to the 74ACT family of logic integrated circuits from STMicroelectronics. It utilizes sub-micron silicon gate technology to deliver high-speed performance comparable to faster families while maintaining pin and function compatibility with legacy 74 series standards.

Replacement Considerations

The datasheet explicitly notes pin and function compatibility with the 74 Series 02. Verify that any substitute maintains the same ACT logic family characteristics to ensure signal integrity and timing compliance.