3Mbps RS-232 Transceivers With Low-Voltage Interface

The MAX13234E MAX13235E MAX13236E MAX13237E are +3V to +5.5V pow- ered EIA/TIA-232 and V.28/V.24 Communications inter- faces with high data-rate capabilities (up to 3Mbps), a flexible Logic voltage Interface and enhanced electro- static discharge (ESD) protection. All receiver inputs and transmitter outputs are protected to 15kV IEC 610004-2 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 0.1F capacitors for operation from a +3.3V supply. All devices achieve a 1A supply current using Maxims AutoShutdown Plus feature. These devices automati- cally 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 MAX13235E MAX13236E MAX13237E are available in space- saving TQFN and TSSOP packages and operate over the -40C to +85C extended temperature range. By Maxim Integrated Products