SN74HCS574 Octal D-Type Flip-Flops with Schmitt-Trigger Inputs, 3-State Outputs,

and Flow-Through Pinout

1 Features

• Available in wettable flank QFN (WBQB) package

• Wide operating voltage range: 2 V to 6 V

• Schmitt-trigger inputs allow for slow or noisy input

signals

• Low power consumption

– Typical ICC of 100 nA

– Typical input leakage current of ±100 nA

• ±7.8-mA output drive at 6 V

• Extended ambient temperature range: –40°C to

+125°C, TA

2 Applications

• Parallel data synchronization

• Parallel data storage

• Shift register

• Pattern generators

3 Description

The SN74HCS574 contains eight D-type flip-flops.

All inputs include Schmitt-trigger architecture. All

channels share a rising edge triggered clock (CLK)

input and active low output enable (OE) input. This

device has a flow-through pinout which allows for

easier bus routing.

Device Information

PART NUMBER

PACKAGE(1)

BODY SIZE (NOM)

SN74HCS574

RKS (VQFN, 20)

4.50 mm × 2.50 mm

DGS (VSSOP, 20)

5.10 mm × 3.00 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

SN74HCS574

SCLS877A – OCTOBER 2021 – REVISED DECEMBER 2022

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.