The MAX3221CAE+T with RS-232 Interface IC 1 uA Supply-Current, True +3V to +5.5V RS-232 Transceivers with AutoShutdown is a transceiver integrated circuit from Analog Devices. The part is a low power, true +3V to +5.5V RS-232 transceiver that allows communication between any two asynchronous devices. The part features high level signaling for high speed transfers, low pin count, and power consumption as low as 1µA. Additionally, the part features Autoshutdown, which significantly reduces power consumption when the RS-232 link is in idle state. The part also has an integrated low dropout voltage regulator which allows transient operation from +2.5V, and has over voltage and over supply protection circuits. This part is available in a space-saving 8-pin SO, PDIP, and SOT-23 package, making it an ideal solution for applications with stringent size constraints.