ANALOG DEVICES MAX7321ATE+ I/O Expander, I2C, 1.71 V, 5.5 V, TQFN, 16 Pins

The MAX7321ATE+ is a I2C port expander with 8 open-drain I/O in 16 pin TQFN package. This 2-wire serial interfaced peripheral features an eight open-drain I/O ports with selectable internal pull-ups 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 INT(complementary) output. The interrupt is latched, allowing detection of transient changes. When MAX7321 is subsequently accessed through serial interface any pending interrupt is cleared. The open-drain outputs are rated to sink 20mA and are capable of driving LEDs. It is used in cell phones, SAN/NAS, servers, satellite radio and notebooks.

• Supply voltage range is 1.71V to 5.5V
• Operating temperature range from -40°C to 125°C
• 400KHz I2C serial interface
• 8 open-drain I/O ports rated to 20mA sink current
• Any port can be a logic input or an open-drain output
• Selectable I/O port power-up default logic states
• Transient changes are latched allowing detection between read operations
• INT(complementary) output alerts change on inputs
• Low 0.6µA (typ) standby current
• Low 0.6µA (typ) standby current

Warnings

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Notes

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