General Description
The MAX1661/MAX1662/MAX1663 serial-to-parallel/parallel-to-serial converters are intended to control external power MOSFETs in power-plane switching applications. These small, low-cost devices can be used on a system motherboard to control point-of-load switching from a 2-wire SMBus™ serial interface. Each device has three high voltage open-drain outputs that double as TTL-level logic inputs, giving them bidirectional capabilities. The I/O pins can withstand +28V, so they can control battery voltage distribution switches in notebook computers.

FEATUREs
♦ Performs Serial-to-Parallel and Parallel-to-Serial Conversions
♦ Three General-Purpose Digital Input/Output Pins(withstand +28V)
♦ SMBus 2-Wire Serial Interface
♦ Supports SMBSUS Asynchronous Suspend Mode
♦ 3µA Supply Current
♦ +2.7V to +5.5V Supply Range
♦ Space-Saving, Low-Cost 10-Pin µMAX Package

APPLICATIONs
Power-Plane Switching
Point-of-Load Power-Bus Switching
Notebook and Subnotebook Computers
Desktop Computers
Smart Batteries