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8-Bit I/O Expander with serial I2C Interface
Convenient when you're short on I/O ports. With this IC you get an extra 8 bidirectional I/O ports available, controlled via I2C. There's also an 16-bits version.
Properties:
8-bit remote bidirectional I/O port
- I/O pins default to input
Maximum output current per I/O: ±25 mA
Aprox. Maximum combined output current: ±100 mA
High-speed I2C™ interface
- 100 kHz
- 400 kHz
- 1.7MHz
3 bits Hardware address pins to allow up to eight
devices on the bus
Configurable interrupt output pin
- Configurable as active-high, active-low or
open-drain
Configurable interrupt source
- Interrupt-on-change from configured defaults
or pin change
Polarity Inversion register to configure the polarity
of the input port data
External reset input
Low standby current: 1 μA (max.)
Operating voltage:
- 1.8V to 5.5V @ -40°C to +85°C
I2C @ 100 kHz
- 2.7V to 5.5V @ -40°C to +85°C
I2C @ 400 kHz
- 4.5V to 5.5V @ -40°C to +125°C
I2C @ 1.7 MHz
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