General Description The MAX13234E–MAX13237E are +3V to +5.5V powered EIA/TIA-232 and V.28/V.24 communications interfaces with high data-rate capabilities (up to 3Mbps), a flexible logic voltage interface, and enhanced electrostatic discharge (ESD) protection. All receiver inputs and transmitter outputs are protected to ±15kV IEC 61000–4-2 Air Gap Discharge, ±8kV IEC 61000-4-2 Contact Discharge, and ±15kV Human Body Model. The MAX13234E/MAX13235E have two receivers and two transmitters, while the MAX13236E/MAX13237E have a single receiver and transmitter. The transmitters have a low-dropout transmitter output stage, delivering true RS-232 performance from a +3V to +5.5V supply based on a dual charge pump. The charge pump requires only four small 0.1μF capacitors for operation from a +3.3V supply. All devices achieve a 1μA supply current using Maxim’s AutoShutdown Plus™ feature. These devices automatically enter a low-power shutdown mode when the RS-232 cable is disconnected or the devices driving the transmitter and receiver inputs are inactive for more than 30s. The MAX13234E–MAX13237E are available in spacesaving TQFN and TSSOP packages and operate over the -40°C to +85°C extended temperature range. Features ♦ Data Rate Up to 3Mbps ♦ Low-Voltage Logic Interface ♦ +3V to +5.5V Supply Voltage ♦ AutoShutdown Plus ♦ 1μA Shutdown Current Applications Telematics GPS Systems Industrial Systems Portable Devices Wireless Modules POS Systems Communication Systems Data Cables
