74HCT27D,653

Overview

The Nexperia 74HCT27D,653 is a triple 3-input NOR gate integrated circuit manufactured by Nexperia USA Inc. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an ambient temperature range from -40 °C to +125 °C. The device utilizes a 14-lead plastic small outline package (SO14) with a body width of 3.9 mm, conforming to the SOT108-1 standard. It features CMOS low power dissipation, high noise immunity, and input clamp diodes for interfacing voltages exceeding VCC.

Feature Summary

• Triple 3-input NOR logic function
• CMOS low power dissipation design
• High noise immunity performance
• Input clamp diodes for over-voltage protection

Applications

• General digital logic processing
• Signal gating and control circuits
• Industrial control systems

Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature rating. Confirm RoHS compliance status and REACH registration details against current regulatory requirements. Ensure the component meets JEDEC standards for latch-up performance and ESD protection levels before finalizing procurement specifications.

Selection Notes

Select this component when a triple 3-input NOR gate is required in a surface-mount SO14 package. The HCT variant ensures TTL-compatible input levels while maintaining CMOS output characteristics. Verify that the operating voltage remains within the 4.5 V to 5.5 V range and that the thermal environment stays within the specified -40 °C to +125 °C limits.

Part Context

This part belongs to the 74HC/HCT27 family of triple 3-input NOR gates produced by Nexperia. It shares functional similarities with other members of the series but differs in package options and electrical characteristics based on the HC or HCT logic family designation. The D,653 suffix specifically denotes the SO14 package configuration.

Replacement Considerations

Cross-reference with other manufacturers offering equivalent triple 3-input NOR gates in SO14 packages. Verify pin compatibility and electrical specifications such as propagation delay and output drive current before substitution.