SN74HCS594 8-Bit Shift Register With Schmitt-Trigger Inputs and Output Registers

1 Features

• Wide operating voltage range: 2 V to 6 V

• Schmitt-trigger inputs allow for slow or noisy input

signals

• Low power consumption

– Typical input leakage current of ±100 nA

• ±7.8-mA output drive at 6 V

• Extended ambient temperature range: –40°C to

2 Applications

• Output expansion

• LED matrix control

• 7-segment display control

• 8-bit data storage

3 Description

The SN74HCS594 device contains an 8-bit, serial-in,

parallel-out shift register that feeds an 8-bit D-type

storage register. All inputs include Schmitt triggers,

eliminating any erroneous data outputs due to slow-

edged or noisy input signals. The storage register has

parallel outputs. Separate clocks and direct overriding

clear (SRCLR, RCLR) inputs are provided for both

provided for cascading.

Both the shift register (SRCLK) and storage register

(RCLK) clocks are positive edge triggered. If both

clocks are connected together, the shift register is one

count pulse ahead of the storage register.

Device Information

PART NUMBER

PACKAGE(1)

BODY SIZE (NOM)

SN74HCS594PW

TSSOP (16)

5.00 mm × 4.40 mm

SN74HCS594D

SOIC (16)

9.90 mm × 3.90 mm

SN74HCS594BQB

WQFN (16)

3.60 mm x 2.60 mm

SN74HCS594DYY

SOT-23-THN

(16)

4.20 mm x 2.00 mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

Input Voltage

Schmitt-trigger

CMOS Input

Response

Waveforms

Standard

CMOS Input

Response

Waveforms

Input Voltage

Input Voltage

Time

Time

Input Voltage

Waveforms

Low Power

Noise Rejection

Supports Slow Inputs

Time

Time

Time

Time

Benefits of Schmitt-trigger inputs

SN74HCS594

SCLS839A – OCTOBER 2020 – REVISED MAY 2021

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.