PCA9671DB,112 Overview
With 16 I/Os, it can be programmed.The device is packaged with the 24-SSOP (0.209, 5.30mm 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 1MHz.In addition to finding POR with this device, it is also possible to find Y.
PCA9671DB,112 Features

PCA9671DB,112 Applications
There are a lot of Rochester Electronics, LLC
PCA9671DB,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	24-SSOP (0.209, 5.30mm Width)
Supplier Device Package	24-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	16
Clock Frequency	1MHz
Interrupt Output	No
Current - Output Source/Sink	100μA 25mA
RoHS Status	ROHS3 Compliant