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EV-123 AAT4296 Eval: Five-channel push/pull I/O expander with serial control

Posted: 07 May 2008 ?? ?Print Version ?Bookmark and Share

Keywords:AAT4296 application note? I/O expander? serial control?

The AAT4296 evaluation board demonstrates AnalogicTech's AAT4296 SmartSwitch as a microprocessor I/O expander. The AAT4296 operates from 1.8V to 5.5V, making it suitable for 2.5V, 3.3V or 5V systems, as well as systems powered by Li-ion/polymer batteries. The AAT4296 is controlled by AnalogicTech's S2Cwire (Simple Serial Control) interface, which offers easy control and efficiency. Each switch features a typical turn-on and turn-off time of 280?s. When the AAT4296 output is programmed for the off or logic low state, the output is internally connected to ground. The switch resistance to the low side n-channel is approximately 2. This document describes the evaluation board and its accompanying user interface.

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