MAX221是Maxim美信半导体公司的一款驱动器-接收器产品，MAX221是+5V、1µA、单路RS-232收发器，带有AutoShutdown，本站介绍了MAX221的封装应用图解、特点和优点、功能等，并给出了与MAX221相关的Maxim元器件型号供参考。
MAX221 - +5V、1µA、单路RS-232收发器，带有AutoShutdown - 驱动器-接收器 - 业内尺寸最小的低功耗、单通道RS-232收发器 - 美信半导体
The MAX221 is a +5V-powered, single transmit/receive RS-232 and V.28 communications interface with automatic shutdown/wake-up features and high data rate capabilities.
The MAX221 achieves a low 1µA supply current with Maxim's revolutionary AutoShutdown™ feature. AutoShutdown saves power without changes to the existing BIOS or operating system by entering low-power shutdown mode when the RS-232 cable is disconnected, or when the transmitter of the connected peripheral is off. The MAX221 wakes up and drives the active-low INVALID pin high when an active RS-232 cable is connected, signaling the host that a peripheral is connected to the communications port.
The MAX221 is available in a 16-pin SSOP package as well as a 16-pin TSSOP that uses 50% less board space than a 16-pin SO. For an equivalent RS-232 transceiver with enhanced ±15kV ESD protection, refer to the MAX221E data sheet.
