SN74HCS164 8-Bit Parallel-Out Serial Shift Registers With Schmitt-Trigger Inputs

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 SN74HCS164 device contains an 8-bit shift

register with AND-gated serial inputs and an

asynchronous clear ( CLR) input. The gated serial (A

and B) inputs permit complete control over incoming

data; a low at either input inhibits entry of the new

data and resets the first flip-flop to the low level at

the next clock (CLK) pulse. A high-level input enables

the other input, which then determines the state of the

first flip-flop. Data at the serial inputs can be changed

while CLK is high or low, provided the minimum

set-up time requirements are met. Clocking occurs

on the low-to-high-level transition of CLK. All inputs

include Schmitt-triggers, eliminating any erroneous

data outputs due to slow-edged or noisy input signals.

Device Information

PART NUMBER

PACKAGE(1)

BODY SIZE (NOM)

SN74HCS164PW

TSSOP (14)

5.00 mm × 4.40 mm

SN74HCS164D

SOIC (14)

8.65 mm × 3.91 mm

SN74HCS164BQA

WQFN (14)

3.00 mm × 2.50 mm

SN74HCS164DYY

SOT-23-THIN (14)

2.00 mm × 4.20 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

SN74HCS164

SCLS827B – AUGUST 2020 – REVISED DECEMBER 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.