74ACT14MTR

Overview

The STMicroelectronics 74ACT14MTR is a Hex Schmitt Inverter fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. It operates within a supply voltage range of 2V to 5.5V, featuring a typical propagation delay of 7.2 ns at 5V and a maximum quiescent supply current of 4 µA at 25°C. The device provides symmetrical output impedance with minimum drive currents of 24 mA for both high and low states. It includes protection circuits against static discharge and transient excess voltage, ensuring 2 kV ESD immunity.

Feature Summary

• Features Schmitt trigger inputs to provide noise immunity and stable operation with slow rise/fall input signals.
• Designed for direct interfacing between High Speed CMOS systems and TTL, NMOS, or CMOS output voltage levels.
• Includes internal buffer output stages to enhance noise immunity and ensure stable signal transmission.
• Equipped with protection circuits on all inputs and outputs to withstand static discharge and transient voltages.

Applications

• Line receivers requiring noise filtering for slow transition signals
• Interfacing logic families with different voltage thresholds
• Signal conditioning in high-speed CMOS digital circuits

Procurement Notes

Verify the component status as obsolete before procurement planning. Confirm package availability matches design requirements, specifically SO-14 for this suffix. Ensure alternative sourcing strategies are established due to end-of-life status. Validate that replacement components meet identical pinout and electrical specifications for seamless integration.

Selection Notes

Select this component when Schmitt trigger functionality is required for noisy environments or slow signals. Consider the 74ACT series compatibility for direct replacements in existing designs. Evaluate the operating temperature range and supply voltage constraints against system requirements. Verify interface compatibility with downstream logic families to ensure proper voltage level translation.

Part Context

This part belongs to the 74ACT logic family, representing advanced high-speed CMOS technology. It is functionally compatible with the standard 74 series 14 pinout but offers improved speed and lower power consumption compared to older bipolar equivalents. The MTR suffix indicates the SO-14 surface-mount package configuration.

Replacement Considerations

Direct substitutes include CD74ACT14M96 from Texas Instruments and MC74ACT14DR2G from onsemi. These alternatives maintain functional compatibility and pinout correspondence. Verify electrical characteristics such as propagation delay and drive current to ensure performance parity in the target application.