SN74HC595DWRE4

Shift Registers Overview

The SN74HC595DWRE4 is an 8-bit serial-in, serial/parallel-out shift register manufactured by Texas Instruments. It belongs to the SN74HC series of high-speed CMOS logic devices. The component features a serial input that feeds an 8-bit shift register, which in turn drives an 8-bit D-type storage register with tri-state outputs. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range from -40°C to +85°C. The device is housed in a 16-pin SOIC package (SSOP variant indicated in some distributor specs for this suffix) and includes asynchronous reset functionality.

Shift Registers Feature Summary

• Provides serial-to-parallel data conversion using an 8-bit shift register and storage register architecture.
• Features tri-state outputs allowing direct connection to system buses without external drivers.
• Includes asynchronous reset capability to clear the storage register independently of clock signals.

Shift Registers Applications

• Serial-to-parallel data expansion in embedded systems
• Driving LED displays or indicator arrays via bus interfaces
• General-purpose I/O expansion for microcontroller applications

Shift Registers Procurement Notes

Verify the specific package type against the manufacturer's official datasheet, as distributor listings may vary between SOIC and SSOP for the DWRE4 suffix. Confirm RoHS compliance status directly with Texas Instruments documentation. Ensure the ordering part number matches the exact pinout and electrical specifications required for your design, as suffixes can indicate variations in tape-and-reel packaging or material composition.

Shift Registers Selection Notes

Select this component when a single-channel 8-bit shift register with tri-state outputs is required. It is suitable for designs needing low power consumption and wide voltage operation. Consider the propagation delay characteristics if high-speed data shifting is critical. Verify that the package footprint matches the PCB layout constraints, specifically checking between SOIC and SSOP dimensions if ambiguity exists in sourcing channels.

Shift Registers Part Context

This part is part of the widely used SN74HC595 family of shift registers. It serves as a standard solution for expanding digital output lines in CMOS logic circuits. The device is compatible with other 74HC series components, facilitating integration into mixed-signal or purely digital control systems requiring reliable data latching and output driving capabilities.

Shift Registers Replacement Considerations

SN74HC595DR is a functional equivalent from Texas Instruments with similar electrical characteristics but potentially different packaging or reel specifications. Other manufacturers may offer pin-compatible alternatives, but verification of voltage ranges and output drive currents is essential before substitution.