The MAX7319AEE+ from Maxim Integrated Products is an I2C port expander with eight inputs and maskable transition detection in 16 pin QSOP package. This 2-wire serial interfaced peripheral feature eight input ports with selectable internal pull-ups, overvoltage protection to +6V and transition detection with interrupt output. All input ports are continuously monitored for state changes (transition detection). The +5.5V tolerant RST (active-low) input clears the serial interface, terminating any I2C communication to or from the MAX7319. It uses two address inputs with four level logic to allow 16 I2C slave addresses. The slave address also enables or disables internal 40Kohm pull-ups in groups of four ports. Ideally used at cell phones, SAN/NAS, servers, notebooks and satellite radio.
Operating voltage range from +1.71V to +5.5V
Operating temperature range from -40°C to 125°C
Interrupt mask
400KHz, +5.5V tolerant I2C serial interface
Eight input ports with maskable, latching transition detection
Input ports are overvoltage protected to +6V
Transient changes are latched allowing detection between read operations
INT output alerts change on any selection of inputs
AD0 and AD2 inputs select from 16 slave addresses
Low 0.6µA (typ) standby current, 1.6V power-on reset voltage
