PCA9502BS,151 Overview
It has 8 I/Os programmed.A 24-VFQFN Exposed Pad-shaped packaging surrounds the device.There is a Tray case available for this product.In 2.3V~3.6V, it is provided as a votage.A Surface Mount mounting type is recommended.Working temperature range -40°C~85°C is required for the device.In order to achieve its performance, its output frequency must work at 400kHz.
PCA9502BS,151 Features

PCA9502BS,151 Applications
There are a lot of Rochester Electronics, LLC
PCA9502BS,151 I/O Expanders applications.

Common Mode Voltage Translation
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

Mounting Type	Surface Mount
Package / Case	24-VFQFN Exposed Pad
Supplier Device Package	24-HVQFN (4x4)
Operating Temperature	-40°C~85°C
Packaging	Tray
Part Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Voltage - Supply	2.3V~3.6V
Output Type	Push-Pull
Interface	I2C, SPI
Number of I/O	8
Clock Frequency	400kHz
Interrupt Output	No
RoHS Status	ROHS3 Compliant