PCA8574ATS,112 Overview
With 8 I/Os, it can be programmed.The device is packaged with the 20-LSSOP (0.173, 4.40mm Width).In addition to the Tube case, it is also available in other cases as well.During 2.3V~5.5V, the vote is supplied.The mounting type it recommends is Surface Mount.Working with the device requires an operating temperature range of -40°C~85°C.For performance, the output frequency is set at 400kHz.In addition to finding POR with this device, it is also possible to find Y.
PCA8574ATS,112 Features

PCA8574ATS,112 Applications
There are a lot of Rochester Electronics, LLC
PCA8574ATS,112 I/O Expanders applications.

Portable Instrumentation
Multiprotocol RFID Readers: EPC-GEN2, ISD and IPX
IDEN, PHS, GSM Basestations
Repeaters, Radio Links, and Modems
Wireless Telemetry
JTRS
802.11x Receivers
IDEN
PHS
TD-SCDMA

Mounting Type	Surface Mount
Package / Case	20-LSSOP (0.173, 4.40mm Width)
Supplier Device Package	20-SSOP
Operating Temperature	-40°C~85°C
Packaging	Tube
Feature	POR
Part Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Voltage - Supply	2.3V~5.5V
Output Type	Push-Pull
Interface	I2C
Number of I/O	8
Clock Frequency	400kHz
Interrupt Output	Yes
Current - Output Source/Sink	100μA 25mA
RoHS Status	ROHS3 Compliant