MAX3222E - Low-Power, Up to 1Mbps, True RS-232 Transceivers with AutoShutdown Plus™

The MAX3222E from Maxim Integrated is a high-performance, low-power transceiver for RS-232 and V.28 communication interfaces with AutoShutdown Plus™ feature. This transceiver is designed to operate with a single +3.0V to +5.5V power supply, making it ideal for portable and space-constrained applications. The MAX3222E features a proprietary low-dropout transmitter output stage, enabling true RS-232 performance from a 3.0V to 5.5V supply with a dual charge pump.

The device is capable of running at data rates up to 1Mbps, and it includes two drivers and two receivers. The MAX3222E provides a robust communication interface for various applications, including laptops, PDAs, printers, and other peripherals, where power efficiency and advanced power-saving features are crucial.

One of the key features of the MAX3222E is its AutoShutdown Plus™ functionality. This innovative technology automatically enters a low-power shutdown mode when the RS-232 cable is disconnected or the transmitters of the connected peripherals are off. The device will also enter this mode if it does not sense a valid signal transition on the receiver inputs within a specified time frame. This significantly reduces the power consumption of the system, which is particularly beneficial for battery-operated devices.

The transceiver's ESD protection exceeds ±15kV using the Human Body Model, ensuring a high level of protection for your electronic devices against electrostatic discharges. The MAX3222E also includes a shutdown pin to manually put the device into a low-power state, where the supply current drops to a mere 1µA, further conserving energy.

The MAX3222E is available in a variety of packages including the space-saving 20-pin TSSOP and the 20-pin SSOP. Its industry-standard pinout and small package options make it easy to integrate into existing designs or new projects requiring reliable RS-232 communication with efficient power management.

Overall, the MAX3222E from Maxim Integrated is an excellent choice for designers looking for a reliable, low-power RS-232 transceiver with advanced power-saving features and high ESD protection.