NXP PCA9554BPWJ

8I²C, SMBusPOR1,65 В ~ 5,5 В-40°C ~ 85°C

Overview

The PCA9554B and PCA9554C are low-voltage 8-bit General Purpose Input/Output(GPIO) expanders with interrupt for I²C-bus/SMBus applications. The only differencebetween the PCA9554B and PCA9554C is their I²C fixed address allowing a largernumber of the same device on the I²C-bus with no chance of address conflict. NXP I/Oexpanders provide a simple solution when additional I/Os are needed while keepinginterconnections to a minimum, for example, in ACPI power switches, sensors,push buttons, LEDs, fan control, etc.

Three hardware pins (A0, A1, A2) select the fixed I²C-bus address and allow up to eightdevices to share the same I²C-bus/SMBus. The PCA9554B and PCA9554C differ only intheir base I²C-bus addresses permitting a total of 16 devices on the I²C-bus, minimizingthe chance for address conflict, even in a complex system.

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