Maxim Integrated's MAX3317CUP+T: High-Speed RS-232 Transceiver with AutoShutdown Plus™

The MAX3317CUP+T from Maxim Integrated is a high-performance, 2.5V powered RS-232 transceiver designed to operate at a high baud rate while maintaining low power consumption. This transceiver is particularly well-suited for battery-powered applications, such as portable devices, where efficient power management is crucial.

Equipped with Maxim's AutoShutdown Plus™ feature, the MAX3317CUP+T automatically enters a low-power shutdown mode when it does not sense any activity on the RS-232 interface, significantly reducing current draw to as low as 1µA. This smart power-saving feature enhances battery life and is ideal for power-sensitive applications.

The device features two drivers and two receivers, providing the necessary interface between a TTL-level UART and RS-232 communication ports. The drivers and receivers meet the requirements of EIA/TIA-232 while operating from a single 2.5V supply, with a dual charge pump to generate the necessary ±5.5V RS-232 voltage levels.

The MAX3317CUP+T is capable of achieving data rates up to 460kbps, making it suitable for high-speed data communication. Additionally, it includes a 1µA shutdown mode, a 2.5V to 5.5V logic supply input for mixed-voltage systems, and a guaranteed 6V/µs slew rate range to minimize EMI and reduce reflections caused by improperly terminated cables.

For enhanced reliability, this transceiver features ±15kV ESD protection on transmitter outputs and receiver inputs, safeguarding the device against electrostatic discharge events that are common in handheld and portable equipment.

The MAX3317CUP+T comes in a small 20-pin TSSOP package, which is ideal for space-constrained applications. Its extended temperature range of -40°C to +85°C allows for operation in a wide range of environmental conditions, making it versatile for various industrial and commercial applications.

Overall, the MAX3317CUP+T transceiver is a robust solution for designers looking to implement RS-232 communications in portable devices, with a focus on minimizing power consumption without compromising on speed or reliability.