74HCT597DB,118

Shift Registers Overview

The Nexperia 74HCT597DB,118 is an 8-bit shift register with input flip-flops housed in a 16-lead SO (SOT109-1) plastic small outline package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports temperatures from -40 °C to +125 °C. The device features TTL-compatible input levels, positive edge-triggered clocks for both storage and shift registers, and includes direct load and clear inputs.

Shift Registers Feature Summary

• Includes an 8-bit parallel storage register feeding a serial-out shift register
• Features positive edge-triggered clocks for independent data handling
• Provides direct overriding load and clear functions for the shift register

Shift Registers Applications

• Data buffering applications requiring temporary storage
• Serial-to-parallel conversion circuits
• Parallel-to-serial conversion systems

Shift Registers Procurement Notes

Verify the specific ordering suffix '118' against current Nexperia documentation to confirm the exact package variant and manufacturing status. Ensure compatibility with standard SO16 footprint requirements during PCB layout. Confirm that the TTL logic level inputs align with the system's voltage thresholds before finalizing procurement.

Shift Registers Selection Notes

Select this component when TTL-level interface compatibility is required alongside CMOS performance characteristics. The dual-clock architecture allows flexible timing control between input latching and serial shifting operations. Verify that the operating temperature range meets the environmental specifications of the target application environment.

Shift Registers Part Context

This part belongs to the 74HCT series of logic integrated circuits manufactured by Nexperia. It is functionally related to the 74HC597 but utilizes HCT logic levels for broader compatibility with TTL-driven systems. The device represents a standard solution for managing data flow in digital logic designs requiring reliable shift register functionality.

Shift Registers Replacement Considerations

The 74HCT597D is the primary equivalent part number within the same family. Verify pinout compatibility and electrical specifications before substitution. Other variants such as the TSSOP version may require physical adapter considerations due to package differences.

Shift Registers FAQ

What is the function of the PL input?

The PL (Parallel Load) input is active LOW and enables the transfer of data from the parallel inputs directly to the shift register.

How are the clocks configured?

Both the storage register clock (STCP) and the shift register clock (SHCP) are positive edge-triggered, allowing independent control over data latching and shifting.