74HCT594D,112

Shift Registers Overview

The Nexperia 74HCT594D,112 is an 8-bit serial-in/serial or parallel-out shift register with a storage register. It operates within a supply voltage range of 4.5 V to 5.5 V and supports ambient temperatures from -40 °C to +125 °C. The device features separate clock and reset inputs for both the shift and storage registers, enabling independent control. Data shifts on LOW-to-HIGH transitions of the SHCP input, while transfer to the storage register occurs on STCP transitions. It includes a serial output (Q7S) for cascading and TTL-compatible input levels.

Shift Registers Feature Summary

• Provides synchronous serial input and output capabilities with 8-bit parallel data availability.
• Features independent direct clear and clock controls for both shift and storage registers.
• Includes clamp diodes on inputs to allow interfacing with voltages exceeding VCC using current limiting resistors.

Shift Registers Applications

• Serial-to-parallel data conversion
• Remote control holding register

Shift Registers Procurement Notes

Verify the specific ordering suffix

Shift Registers Selection Notes

Select this component when TTL logic compatibility is required in a CMOS environment. The HCT series ensures proper voltage level matching with standard TTL devices. Ensure the design accommodates the specified operating temperature range and supply voltage limits. Verify that the package dimensions align with the PCB layout requirements for the SO16 form factor.

Shift Registers Part Context

This part belongs to the 74HCT594 family, which defines an 8-bit shift register with output register. The 'D' indicates the SO16 plastic small outline package variant. The ',112' suffix denotes the specific tape and reel packaging configuration provided by Nexperia for automated assembly processes.

Shift Registers Replacement Considerations

Nexperia 74HC594D,112

Shift Registers FAQ

How are the shift and storage registers controlled?

The device provides separate clock inputs (SHCP for shift, STCP for storage) and reset pins (SHR for shift, STR for storage), allowing independent operation of each register stage.

What is the function of the Q7S pin?

The Q7S pin serves as the serial data output, enabling the cascading of multiple shift registers to extend data width.