74HCT32D,653

Overview

The Nexperia 74HCT32D,653 is a quad 2-input OR gate in the 74HCT logic family. It operates on a supply voltage of 4.5 V to 5.5 V and features TTL-compatible input levels. The device provides four independent OR gates within a 14-lead SO plastic small outline package (SOT108-1). It supports an operating temperature range from -40 °C to +125 °C and includes input clamp diodes for interfacing with voltages exceeding VCC.

Feature Summary

• TTL-compatible input levels for direct interface with standard logic families
• High noise immunity and CMOS low power dissipation characteristics
• Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
• Symmetrical output impedance with balanced propagation delays

Applications

• Digital signal processing circuits requiring logical OR operations
• Interface modules connecting TTL-level sources to CMOS loads
• General-purpose logic control systems operating at 5 V

Procurement Notes

Verify the specific ordering suffix matches the required package type and tape-and-reel configuration. Confirm that the component meets RoHS3 compliance standards and check for any recent Product Change Notifications regarding marking or assembly updates before finalizing procurement orders.

Selection Notes

Select this part when TTL-level inputs are required alongside CMOS output drive capabilities. Ensure the application voltage remains within the 4.5 V to 5.5 V range. Consider the 14-lead SO package dimensions if board space constraints apply relative to other available package options like TSSOP.

Part Context

This component belongs to the 74HCT series, which bridges the gap between older TTL logic standards and modern CMOS technology. It shares the same pinout and logical function as the 74HC32 but utilizes different input threshold voltages optimized for 5 V operation.

Replacement Considerations

Cross-reference with 74HC32D,653 for HC-series compatibility or 74HCT32PW,118 for alternative packaging.