TI PCA9555PWR

16I²C, SMBusPOR2,3 В ~ 5,5 В-40°C ~ 85°C

Overview

This 16-bit I/O expander for the two-line bidirectional bus(I2C) is designed for 2.3-V to 5.5-V VCCoperation. It provides general-purpose remote I/O expansion for most microcontroller families viathe I2C interface [serial clock (SCL), serial data (SDA)].

The PCA9555PWR consists of two 8-bit Configuration (input or output selection), Input Port,Output Port, and Polarity Inversion (active high or active low operation) registers. At power on,the I/Os are configured as inputs. The system master can enable the I/Os as either inputs oroutputs by writing to the I/O configuration bits. The data for each input or output is kept in thecorresponding Input or Output register. The polarity of the Input Port register can be invertedwith the Polarity Inversion register. All registers can be read by the system master.

Features

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