74AC20MTR

Overview

The 74AC20MTR is a dual 4-input NAND gate manufactured by STMicroelectronics using sub-micron silicon gate and double-layer metal wiring C2MOS technology. It operates within a supply voltage range of 2V to 6V. The device features high-speed performance with a typical propagation delay of 4ns at VCC = 5V, low power dissipation with a maximum quiescent current of 2μA at 25°C, and high noise immunity defined as 28% of VCC minimum. It includes protection circuits against static discharge providing 2kV ESD immunity.

Feature Summary

• Advanced CMOS fabrication utilizing sub-micron silicon gate and double-layer metal wiring for enhanced speed and reliability.
• Integrated internal circuit with buffer output stages designed to ensure stable outputs and high noise immunity.
• Built-in protection circuits on all inputs and outputs to withstand static discharge events up to 2kV.

Applications

• Digital logic systems requiring dual 4-input NAND functionality
• High-speed data processing circuits
• General-purpose logic applications compatible with 74 series standards

Procurement Notes

Verify the specific package type required for your design, as the base part number covers multiple packages including SO-14 and TSSOP-14. Confirm that the 'MTR' suffix corresponds to the tape and reel packaging format intended for automated assembly processes. Ensure compatibility with your board's surface mount requirements before finalizing procurement orders.

Selection Notes

Select this component when a dual 4-input NAND gate is needed with high-speed operation capabilities. It is suitable for designs operating between 2V and 6V where low power consumption is a priority. Consider its pin and function compatibility with standard 74 series devices if migrating from older technologies. Evaluate the 4ns propagation delay against your system's timing constraints.

Part Context

This component belongs to the 74AC logic family, which represents advanced high-speed CMOS technology. It serves as a direct functional replacement for the legacy 74S20 in terms of pinout and logic function, offering improved performance characteristics such as faster switching speeds and lower power dissipation while maintaining industry-standard interface compatibility.

Replacement Considerations

Check datasheets for alternative manufacturers offering equivalent 74AC20 logic gates. Verify that any substitute maintains the same 2V to 6V operating voltage range and physical footprint to ensure seamless integration without redesigning the printed circuit board layout.

FAQ

What is the typical propagation delay of the 74AC20MTR?

The typical propagation delay is 4ns when operating at a supply voltage of 5V.

Does the 74AC20MTR have input protection?

Yes, all inputs and outputs are equipped with protection circuits against static discharge, providing 2kV ESD immunity.