SN74HC594N

Shift Registers Overview

The SN74HC594N is an 8-bit serial-in, parallel-out shift register with an output storage register. It operates within a supply voltage range of 2 V to 6 V and features high-current outputs capable of driving up to 15 LSTTL loads. The device includes separate positive edge-triggered clocks for the shift and storage registers, along with independent direct overriding clear inputs for both stages. It utilizes CMOS technology with low power consumption and provides a serial output (QH') for cascading applications.

Shift Registers Feature Summary

• Contains an 8-bit shift register feeding an 8-bit D-type storage register
• Features high-current outputs suitable for medium loads
• Includes independent direct overriding clear inputs for shift and storage registers
• Provides separate clocks for shift and storage operations

Shift Registers Applications

• Pro Audio Mixer
• Elevators and Escalators
• Human Machine Interface (HMI): Industrial Monitor
• Entertainment Systems
• Grid Infrastructure: Grid Control

Shift Registers Procurement Notes

Verify the package type matches the required design constraints, as the SN74HC594 series is available in multiple configurations including SOIC and PDIP. Confirm that the specific ordering suffix aligns with the desired manufacturing status and material specifications. Ensure compatibility with the target operating temperature range and voltage requirements before finalizing procurement decisions.

Shift Registers Selection Notes

Select this component when a reliable 8-bit serial-to-parallel conversion is needed with buffered outputs. The wide voltage range supports diverse logic levels, while the separate clocking allows precise control over data latching. Consider the high-current drive capability for interfacing with standard TTL loads without additional buffering circuitry.

Shift Registers Part Context

This device belongs to the SNx4HC594 family of 8-bit shift registers with output registers. It is manufactured using Texas Instruments' HC CMOS technology, which offers balanced output drive and low power consumption. The part is designed for general-purpose digital logic applications requiring serial data expansion and storage capabilities.

Shift Registers Replacement Considerations

SN74HC594DR

Shift Registers FAQ

How are the shift and storage register clocks related?

Both clocks are positive edge triggered. If connected together, the shift register remains one count pulse ahead of the storage register.

What is the function of the QH' output?

The QH' output serves as a serial output specifically provided for cascading purposes to connect multiple devices.