74HC173PW,118

Overview

The Nexperia 74HC173PW,118 is a high-speed HC CMOS octal D-type flip-flop with three-state outputs, housed in a 20-TSSOP package. It features independent clock inputs for two groups of four flip-flops, allowing flexible data storage configurations. The device operates within a supply voltage range of 2V to 6V and supports input levels compatible with standard CMOS logic families. Key electrical parameters include a propagation delay of 13ns at 5V with 50pF load, output drive currents of ±5.2mA, and a static current maximum of 2µA. It functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• Octal D-type flip-flop architecture with independent dual-group clocking for flexible data management
• Three-state outputs enable direct bus interfacing without additional buffer hardware
• High noise immunity and low power consumption characteristic of advanced HC CMOS technology

Applications

• Parallel-to-serial data conversion circuits
• Register banks for temporary data storage in microprocessor systems
• Interface buffering between different logic voltage domains

Procurement Notes

Verify the complete part number including the suffix ,118 to ensure correct packaging configuration. Confirm RoHS compliance status and moisture sensitivity level requirements against specific manufacturing standards. Cross-reference the datasheet revision date to ensure alignment with current design specifications and pinout definitions before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring octal storage with tri-state bus compatibility. Ensure the operating voltage aligns with the 2V to 6V specification. Consider the 20-TSSOP footprint for PCB layout constraints. Verify that the required propagation delay meets system timing budgets compared to faster AHC or ALVC alternatives if speed is critical.

Part Context

This component belongs to the widely adopted 74HC series of CMOS logic integrated circuits. It provides a standard interface solution for digital logic applications requiring reliable state retention. The TSSOP-20 package offers a compact surface-mount form factor suitable for modern electronics manufacturing processes and space-constrained board designs.

Replacement Considerations

• 74HC173D,653
• SN74HC173N

FAQ

How are the clock inputs configured for the eight flip-flops?

The device contains two independent clock inputs, each controlling a group of four flip-flops, allowing separate synchronization for different data sets.

What is the function of the three-state outputs?

The three-state outputs allow the flip-flop data to be disconnected from the bus when not active, preventing signal contention during multiplexed operations.