74AHC594D,118

Shift Registers Overview

The Nexperia 74AHC594D,118 is an 8-bit serial-in, parallel-out shift register with an output storage register. It operates on a wide supply voltage range from 2.0 V to 5.5 V and utilizes high-speed Si-gate CMOS technology. The device features balanced propagation delays and Schmitt-trigger action at all inputs for improved noise immunity. It includes independent clocks (SHCP and STCP) and direct overriding clears (SHR and STR) for both the shift and storage registers. The component is housed in a 16-lead SO plastic small outline package (SOT109-1).

Shift Registers Feature Summary

• Provides 8-bit serial-to-parallel data conversion capabilities with an integrated storage register.
• Features independent clocking and direct overriding clear functions for both shift and storage stages.
• Includes overvoltage tolerant inputs up to 5.5 V and ESD protection compliant with JEDEC standards.

Shift Registers Applications

• Serial-to-parallel data conversion circuits
• Remote control holding registers

Shift Registers Procurement Notes

Verify the specific ordering suffix

Shift Registers Selection Notes

Select this part when an 8-bit shift register with separate storage functionality is required. Ensure the design accommodates the 2.0 V to 5.5 V supply range and utilizes the SO16 package footprint. Consider the AHC logic family for its balance of speed and power consumption compared to standard HC or HCT variants.

Shift Registers Part Context

This component belongs to the 74AHC series of high-speed CMOS logic devices manufactured by Nexperia. It is pin-compatible with Low-Power Schottky TTL (LSTTL) standards. The device is specified in compliance with JEDEC standard No. 7-A and is designed for operation across extended temperature ranges.

Shift Registers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.

Shift Registers FAQ

Does the 74AHC594D support cascading?

Yes, a serial output (Q7S) is provided specifically for cascading purposes to connect multiple devices.

What is the function of the SHR and STR pins?

SHR and STR are direct overriding clear inputs for the shift register and storage register, respectively. They are active LOW signals that reset their corresponding registers independently.