16-bit I2C-bus and SMBus I/O port with interrupt - # of Addresses: 8 ; I2C-bus: 400 kHz; Interrupt: 0-1 ; Max Sink Current per bit: 25 mA; Max Sink Current, per package: 200 mA; Number of bits: 16 ; Operating temperature: -40~85 Cel; Operating voltage: 2.3~5.5 VDC; Source Current per bit: 10 mA; Weak Pull-Up Current Source: yes; Package: SOT340-1 (SSOP24); Container: Tube
The PCA9555DB,112 can support I2C bus frequencies up to 400 kHz.
Yes, the PCA9555DB,112 can be used as a level translator between 3.3V and 1.8V logic levels, but it requires an external voltage regulator to generate the 1.8V supply.
To configure the PCA9555DB,112 to operate in 8-bit mode, set the A0 and A1 address pins to logic low, and write the configuration register (address 0x06) with the value 0x08.
The PCA9555DB,112 can sink or source up to 25 mA of current on each I/O pin.
Yes, the PCA9555DB,112 can be used in a hot-swappable application, but it requires external circuitry to ensure that the power supply is stable and the I2C bus is not disturbed during the hot-swap event.
PCA9555DB,112 datasheet
by NXP Semiconductors
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