MAX7300AAI PDF File ( Datasheet )

MAX7300 2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port I, O Expander General Description The MAX7300 compact, serial-interfaced, I, O expansion peripheral provides microprocessors with up to 28 ports. Each port is individually user configurable to either a logic input or logic output. Each port can be configured as either a push-pull logic output capable of sinking 10mA and sourcing 4.5mA, or a Schmitt logic input with optional internal pullup. Seven ports feature configurable transition