MAX7321 I²C Port Expander With 8 Open-Drain I/Os

The MAX7321 2-wire serial-interfaced peripheral features eight open-drain I/O ports with selectable internal pullups and transition detection. Any port may be used as a Logic input or an open-drain output. Ports are overvoltage protected to +6V independent of supply voltage.
All I/O ports configured as inputs are continuously monitored for state changes (transition detection). State changes are indicated by the open-drain, active-low INT output. The interrupt is latched, allowing detection of transient changes. When the MAX7321 is subsequently accessed through the serial Interface any pending interrupt is cleared.
The open-drain outputs are rated to sink 20mA and are capable of driving LEDs
The +6V tolerant active-low RST input clears the serial Interface terminating any IC Communication to or from the MAX7321.
The MAX7321 uses two address inputs with four-level Logic to allow 16 IC slave addresses. The slave address also determines the power-up Logic state for the I/O ports, and enables or disables internal 40k pullups in groups of four ports.
The MAX7321 is one device in a family of pin-compatible port expanders with a choice of input ports, open-drain I/O ports, and push-pull output ports.
The MAX7321 is available in 16-pin QSOP and TQFN packages, and is specified over the automotive temperature range (-40C to +125C).
By Maxim Integrated Products
MAX7321 's PackagesMAX7321 's pdf datasheet
MAX7321AEE QSOP
MAX7321AEET QSOP
MAX7321AEE-T QSOP
MAX7321ATET QFN
MAX7321ATE QFN
MAX7321ATE-T QFN




MAX7321 Pinout, Pinouts
MAX7321 pinout,Pin out
This is one package pinout of MAX7321,If you need more pinouts please download MAX7321's pdf datasheet.

MAX7321 Application circuits
MAX7321 circuits
This is one application circuit of MAX7321,If you need more circuits,please download MAX7321's pdf datasheet.


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