The MAX7321AEE+ is an I2C port expander featuring eight open-drain I/O ports in a 16-pin QSOP package. It supports a supply voltage range of 1.71V to 5.5V and operates within an temperature range of -40°C to 125°C. This device communicates via a 400kHz I2C serial interface and provides selectable default logic states upon power-up. Each I/O port can function as either a logic input or an open-drain output rated to sink 20mA, suitable for driving LEDs or similar loads. Ports are overvoltage protected up to +6V independently of the supply voltage. Continuous monitoring of input states allows detection of transient changes, which are latched and indicated via an open-drain interrupt output. The device has low standby current of approximately 0.6µA. It is used in applications such as cell phones, SAN/NAS storage, servers, satellite radios, and notebooks.
Purchase the Maxim MAX7321AEE+ online today to add reliable eight-channel I2C port expansion to your system. Featuring open-drain outputs rated to sink 20mA and overvoltage protection up to +6V, it supports a supply voltage range from 1.71V to 5.5V. Its low standby current of around 0.6µA and operation over -40°C to 125°C make it ideal for industrial, networking, and consumer electronics applications. Easy to integrate with a 400kHz I2C interface, it enables detection of transient port changes with latched alerts for efficient monitoring.
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You can download the MAX7321AEE datasheet or visit the MAXIM INTEGRATED / ANALOG DEVICES website for support.
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