I/O extension, 16bit, 1.8 - 5V, serial, I2C, QFN-28

16-bit I/O expander with serial interface

Features:
• Bi-directional 16-bit remote I/O port:
• I/O pins are input by default
• High-speed I2C interface (MCP23017):
• 100kHz
• 400kHz
• 1.7MHz
• High-speed SPI interface (MCP23S17):
• 10 MHz (maximum)
• Three hardware address pins enable up to eight devices on the bus
• Configurable interrupt output pins:
• Configurable as Active-High, Active-Low or Open-Drain
• INTA and INTB can be configured to operate independently or together
• Configurable interrupt source:
• Interrupt-on-change of configured register presets or pin changes
• Reverse polarity 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 at -40°C to +85°C.
• 2.7V to 5.5V at -40°C to +85°C.
• 4.5V to 5.5V at -40°C to +125°C.

Types of construction:
• 28-pin QFN, 6 x 6 mm housing
• 28-pin SOIC, wide, 7.50 mm housing
• 28-pin SPDIP, 300 mil package
• 28-pin SSOP, 5.30 mm housing