Maxim Integrated MAX3387EEUI: RS-232 Transceiver with Low-Voltage Interface

The Maxim Integrated MAX3387EEUI is a highly versatile RS-232 transceiver designed to facilitate communication between low-voltage digital logic circuits and standard RS-232 serial ports. This integrated circuit is ideal for applications where space is at a premium and power efficiency is a priority, such as portable or battery-powered devices, PDAs, notebooks, and telecom equipment.

With a wide operating voltage range of 2.35V to 5.5V, the MAX3387EEUI is capable of interfacing with a variety of logic families, making it a flexible solution for systems that require level translation between low-voltage logic and RS-232 communication standards. This transceiver is equipped with a dual charge pump that enables it to generate the necessary RS-232 voltage levels, even when operating from low supply voltages.

The MAX3387EEUI features two drivers and two receivers, offering full-duplex communication capability. It supports data rates up to 250kbps, ensuring efficient data transfer for most serial communication needs. The device also incorporates a shutdown mode that reduces the supply current to a mere 1µA, significantly extending battery life in portable applications.

Protection is a key aspect of the MAX3387EEUI, as it is designed with robust electrostatic discharge (ESD) protection up to ±15kV using the Human Body Model, safeguarding the device against damage from static electricity and enhancing system reliability. Additionally, the transceiver's receivers have a 3V to 5.5V input voltage range, which allows for direct interfacing with 5V systems without the need for additional level shifters.

Available in a 28-pin TSSOP package, the MAX3387EEUI provides a compact solution for RS-232 communication, making it an excellent choice for engineers and designers looking to incorporate reliable serial data transfer into their low-voltage applications. Its combination of low-power operation, high ESD protection, and wide voltage compatibility ensures that the MAX3387EEUI can meet the demands of a variety of sophisticated electronic systems.