SN74HC595PW

Shift Registers Overview

The SN74HC595PW is an 8-bit serial-in, parallel-out shift register from Texas Instruments' HC logic family. It features a serial input/parallel output shift register that feeds an 8-bit D-type storage register with tri-state outputs. The device operates within a wide voltage range of 2V to 6V and supports surface-mount TSSOP-16 packaging. Key electrical characteristics include a typical propagation delay of 13ns at 5V, maximum low-level output current of 7.8mA, and maximum high-level output current of -7.8mA. It functions as a counter shift register with serial-to-serial/parallel counting order.

Shift Registers Feature Summary

• Provides serial-to-parallel data conversion using an 8-bit shift register feeding a storage register
• Features tri-state parallel outputs controlled by an active-low output enable pin
• Includes a direct clear function for the shift register via the SRCLR input

Shift Registers Applications

• Microcontroller I/O expansion for controlling multiple peripherals
• LED display matrix scanning and driver circuits
• Serial-to-parallel data interface modules in embedded systems

Shift Registers Procurement Notes

Verify the specific suffix 'PW' corresponds to the TSSOP-16 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets. Ensure the operating temperature range meets system requirements, as commercial grade variants typically specify -40°C to +85°C. Cross-reference the manufacturer part number against the latest revision history to confirm pinout and electrical parameter consistency.

Shift Registers Selection Notes

Select this component when a CMOS-compatible 8-bit shift register with tri-state outputs is required for space-constrained designs. The TSSOP-16 package offers a compact footprint suitable for surface-mount assembly. Consider the 2V to 6V operating range for compatibility with various logic families. Verify that the input current specifications align with the driving source capabilities to ensure reliable signal integrity across the full temperature range.

Shift Registers Part Context

This device belongs to the SNx4HC595 series of 8-bit shift registers manufactured by Texas Instruments. It is part of the broader 74HC logic family, designed for high-speed CMOS operations. The 'PWR' or 'PW' suffix indicates specific packaging and tape-and-reel options available within the product line. It serves as a standard solution for expanding digital output lines in industrial and consumer electronic applications requiring serial data processing.

Shift Registers Replacement Considerations

Compatible substitutes include SN74HC595N (PDIP-16), SN74HC595DR (SOIC-16), and SN74HC595D (SOIC-16). These alternatives share identical logical functionality but differ in physical package dimensions and mounting style. Verify pin compatibility and thermal performance before substituting to ensure mechanical fit within the existing PCB layout.