SN74HC595DR

Shift Registers Overview

The SN74HC595DR is an 8-bit serial-in, serial/parallel-out shift register manufactured by Texas Instruments. It belongs to the SN74HC series of CMOS logic devices and features a 16-pin SOIC surface-mount package. The device operates within a supply voltage range of 2 V to 6 V and supports a wide operating temperature range from -40°C to +85°C. Key electrical characteristics include a propagation delay of 34 ns at 5 V, with maximum output currents of ±7.8 mA. The component includes a direct clear input for resetting the shift register and provides three-state outputs controlled by an output enable pin.

Shift Registers Feature Summary

• Provides serial-to-parallel data conversion capability for expanding microcontroller I/O lines
• Features independent clock inputs for the shift register and storage register operations
• Includes a direct override clear input to reset the shift register data
• Supports cascading structures through a dedicated serial output pin

Shift Registers Applications

• Microcontroller port expansion in embedded systems
• LED display matrix driving circuits
• Industrial control system interface modules
• Consumer electronics peripheral interfacing

Shift Registers Procurement Notes

Verify the specific suffix 'DR' corresponds to the SOIC-16 package and tape-and-reel packaging configuration as documented in the official Texas Instruments datasheet. Confirm that the RoHS compliance status matches current regulatory requirements for your region. Ensure the ordering part number aligns exactly with the manufacturer's catalog listing to avoid discrepancies in package type or electrical specifications.

Shift Registers Selection Notes

Select this component when a cost-effective CMOS solution is required for serial-to-parallel conversion in standard 5 V logic environments. The HC series offers compatibility with LSTTL loads while maintaining low power consumption. Consider the SOIC-16 package dimensions for PCB layout constraints. Verify that the operating voltage range of 2 V to 6 V meets the system power supply specifications before integration into the design.

Shift Registers Part Context

This device is part of the widely adopted SN74HC595 family of 8-bit shift registers produced by Texas Instruments. The family is designed for general-purpose digital logic applications requiring data serialization and parallel output capabilities. The DR suffix specifically denotes the SOIC-16 surface-mount package variant, distinguishing it from other package options like TSSOP or PDIP available within the same logical function family.

Shift Registers Replacement Considerations

SN74HC595DRE4 is a verified equivalent part number from Texas Instruments offering identical functionality and specifications.