MAX7322ATE+T

MAX7322ATE+T is an I²C port expander with 4 push-pull outputs and 4 inputs. This 2-wire serial-interfaced peripheral features four push-pull outputs and four input ports with selectable internal pullups. Input ports are overvoltage protected to +6V and feature transition detection with interrupt output. The four input ports are continuously monitored for state changes (transition detection). The interrupt is latched, allowing the detection of transient changes. Any combination of inputs can be selected using the interrupt mask to assert the open-drain active-low INT output. When the MAX7322 is subsequently accessed through the serial interface, any pending interrupt is cleared. The four push-pull outputs are rated to sink 20mA and are capable of driving LEDs. It is used in applications such as cell phones, SAN/NAS, servers, notebooks, satellite radio.

• 4 inputs, interrupt mask, open drain output, push pull outputs
• 400KHz I²C Serial Interface, +1.71V to +5.5V operation voltage
• 4 push-pull output ports rated at 20mA sink current
• 4 input ports with maskable, latching transition detection
• Transient changes are latched, allowing detection between read operations
• Active-low INT output alerts change on any selection of inputs
• Standby current (interface idle) is 1.5µA maximum at (V+ = +3.3V, TA = +25°C)
• Supply current (interface running) is 55µA maximum at (fSCL = 400KHz; other digital inputs at V+)
• Serial-clock frequency is 400KHz maximum at (V+ = +1.71V to +5.5V, TA = -40°C to +125°C)
• Operating temperature range from -40°C to +125°C, 16-pin TQFN-EP package

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