MAX7301 Overview
The MAX7301 pact, serial-interfaced I/O expander (or general-purpose I/O (GPIO) 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 either as a push-pull logic output capable of sinking 10mA and sourcing 4.5mA, or a Schmitt logic input with optional internal pullup.
MAX7301 Key Features
- Industry-Standard 4-Wire Interface Simplifies Expansion of I/O Ports to Up to 28 I/Os Independent of Microprocessor Arch
- High-Speed, 26MHz, SPI-/QSPI™-/MICROWIRE®patible Serial Interface
- 2.25V to 5.5V Operation
- 20 or 28 I/O Ports Configurable as Push-Pull Logic Output, Schmitt Logic Input or Schmitt Logic Input with Internal Pull
- Logic Transition Detection for Seven I/O Ports
- Low Power Consumption Reduces Power-Supply Requirements
- 11μA (max) Shutdown Current