MAXIM MAX7323AEE+

The MAX7323 2-wire serial-interfaced peripheral features eight I/O ports. Four ports are push-pull outputs and the other four are open-drain I/O ports that are overvoltage protected up to +6V independent of the supply voltage. The four I/O ports configured as inputs are continuously monitored for state changes (transition detection). State changes are indicated by the open-drain INT output. The interrupt is latched, allowing detection of transient changes. When the MAX7323 is subsequently accessed through the serial interface, any pending interrupt is cleared. The four push-pull and four open-drain outputs are rated to sink 20mA and are capable of driving LEDs. The RST input clears the serial interface, terminating any I2C communication to or from the MAX7323. The MAX7323 uses two address inputs with four-level logic to allow 16 I2C slave addresses. The slave address also determines the power-up logic state for the I/O ports, and enables or disables internal 40kΩ pullups for the input ports in groups of two ports. The MAX7323 is available in 16-pin QSOP and 16-pin TQFN packages, and is specified over the automotive temperature range (-40℃ to +125℃).

• 400kHz I2C Serial Interface
• +1.71V to +5.5V Operating Voltage
• 4 Push-Pull Output Ports Rated at 20mA Sink Current
• 4 Open-Drain I/O Ports Rated to 20mA Sink Current
• 4 I/O Ports Are Overvoltage Protected to +6V
• Transient Changes Are Latched, Allowing Detection Between Read Operations
• INT Output Alerts Change on Inputs
• AD0 and AD2 Inputs Select from 16 Slave Addresses
• Low 0.6μA (typ) Standby Current
• -40℃ to +125℃ Operating Temperature Range

• Cell Phones
• Notebooks
• SAN/NAS
• RAID
• Servers