74HCT165N,652

Shift Registers Overview

The NXP USA Inc. 74HCT165N,652 is an 8-bit parallel-in/serial-out shift register belonging to the HCT logic family. It features a serial data input (DS), eight parallel data inputs (D0 to D7), and two complementary serial outputs (Q7 and Q7). The device operates with a supply voltage range of 4.5 V to 5.5 V and supports asynchronous parallel loading when the PL input is LOW. Data shifts on the LOW-to-HIGH transitions of the clock input (CP) when the clock enable (CE) is LOW. Inputs are overvoltage tolerant up to 15 V.

Shift Registers Feature Summary

• Asynchronous 8-bit parallel load capability for immediate data capture
• Synchronous serial shifting controlled by clock enable and clock inputs
• Complementary serial outputs providing both true and inverted signals
• Input levels compatible with TTL standards

Shift Registers Applications

• Parallel-to-serial data conversion
• HIGH-to-LOW level shifting applications due to overvoltage tolerant inputs
• Expansion of digital I/O ports in embedded systems

Shift Registers Procurement Notes

Verify that the specific part number 74HCT165N,652 corresponds to the PDIP package variant as indicated by the 'N' suffix. Confirm the manufacturer designation matches NXP USA Inc. or Nexperia, as these entities share the product lineage. Ensure the datasheet revision aligns with current production specifications before finalizing procurement orders.

Shift Registers Selection Notes

Select this component when TTL-compatible logic levels are required within a CMOS system. The HCT series ensures compatibility with standard 5V TTL devices while offering CMOS power dissipation benefits. Consider the PDIP package availability if through-hole mounting is necessary for the target application design.

Shift Registers Part Context

This component is part of the broader 74HC/HCT165 family of shift registers. While the HC variant utilizes CMOS input levels, the HCT variant specifically adapts to TTL input thresholds. The 'N' suffix typically denotes a plastic dual in-line package, distinguishing it from surface-mount options like SO or TSSOP variants within the same functional family.

Shift Registers Replacement Considerations

Public confirmed substitute part numbers include 74HC165N,652 for CMOS-level applications.