SN74AHCT595PWR

Shift Registers Overview

The SN74AHCT595PWR is an 8-bit serial-in, parallel-out shift register with a storage register and 3-state outputs. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum operating temperature of 125 °C. The device features TTL-compatible inputs and provides balanced output drive capabilities. Key electrical characteristics include a high-level output current of -8 mA and a low-level output current of 8 mA at 5 V. Propagation delays are specified up to 12 ns under standard load conditions.

Shift Registers Feature Summary

• Features an 8-bit serial-in, parallel-out shift register feeding an 8-bit D-type storage register with separate positive-edge triggered clocks.
• Includes direct overriding clear (SRCLR) input and serial outputs for cascading applications.
• Provides 3-state parallel outputs controlled by an Output Enable (OE) pin for bus interface compatibility.

Shift Registers Applications

• Network switches
• Power infrastructures
• LED displays

Shift Registers Procurement Notes

Verify the specific package type and manufacturer part number against official Texas Instruments documentation before procurement. Confirm that the ordering suffix matches the required tape and reel specifications. Ensure compliance with RoHS directives and check for any recent product life cycle changes or obsolescence notices directly from the manufacturer.

Shift Registers Selection Notes

Select this component when a CMOS shift register with TTL-compatible input levels is required for 5 V systems. The AHCT series is suitable for translating signals from lower voltage logic families. Consider the 16-pin TSSOP package dimensions and thermal resistance values if high ambient temperatures are expected in the design environment.

Shift Registers Part Context

This device belongs to the SNx4AHCT595 family of 8-bit shift registers manufactured by Texas Instruments. It utilizes advanced CMOS technology to provide low power consumption while maintaining high-speed performance. The family includes various package options such as SOIC, SSOP, and WQFN to accommodate different PCB layout requirements.

Shift Registers Replacement Considerations

SN74AHCT595PWRE4

Shift Registers FAQ

How does the Output Enable (OE) pin function?

When the OE input is high, the outputs QA through QH enter a high-impedance state. When OE is low, the outputs are enabled and driven according to the storage register contents.

What is the purpose of the SRCLR input?

The SRCLR input provides a direct override to clear the shift register. When asserted low, it resets the shift register regardless of the clock states.