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.

The MAX1661 is intended for driving N-channel MOSFETs and its outputs are low upon power-up. The MAX1662/MAX1663 are intended for P-channel MOSFETs, and their outputs are high-impedance upon power-up. This ensures that the MOSFETs are off at power-up, so the system can enforce power-plane sequencing.

The active-low SMBSUS control input selects control data between two separate data registers. This feature allows the system to select between two different power-plane configurations asynchronously, eliminating latencies introduced by the serial bus. Other features include thermal-overload and overcurrent protection, ultra-low supply current, and both hardware and software interrupt capabilities. These devices are available in the space-saving 10-pin µMAX® package.

• MAX7422 - 五阶、低通、开关电容滤波器
• ICM7225 - 4 1/2位、LCD、高速计数器及解码驱动器
• MAX11636 - 12位、300ksps ADC，带有差分采样/保持和内部基准
• MAX1416 - 16位、低功耗、2通道、Σ-Δ ADC
• MAX16053 - 高压、可调节排序/监控电路
• MAX7404 - 八阶、低通、椭圆函数、开关电容滤波器
• MAX8882 - 双路、低噪声、低压差、160mA线性稳压器，SOT23封装
• MAX9924 - 可变磁阻传感器接口，提供差分输入和自适应峰值门限
• MAX5924 - 1V至13.2V、n沟道热插拔控制器，无需检测电阻
• MAX5482 - 10位、非易失、线性变化数字电位器