±15kV ESD-Protected, 3.0V To 5.5V, Low-Power, Up To 250kbps, True RS-232 Transceiver

The MAX3385E is a 3V-powered EIA/TIA-232 and V.28/V.24 Communications Interface with low power requirements, high data-rate capabilities, and en- hanced electrostatic discharge (ESD) protection. All transmitter outputs and receiver inputs are protected to 15kV using IEC 1000-4-2 Air-Gap Discharge, 8kV using IEC 1000-4-2 Contact Discharge, and 15kV using the Human Body Model. The transceiver has a proprietary low-dropout transmit- ter output stage, delivering true RS-232 performance from a +3.0V to +5.5V supply with a dual Charge Pump The Charge Pump requires only four small 0.1F capac- itors for operation from a +3.3V supply. Each device is guaranteed to run at data rates of 250kbps while main- taining RS-232 output levels. The MAX3385E has two receivers and two drivers. It features a 1A shutdown mode that reduces power con- sumption and extends battery life in portable systems. Its receivers CAN remain active in shutdown mode, allowing external devices such as modems to be moni- tored using only 1A supply current. The MAX3385E is available in a space-saving SSOP package in either the commercial (0C to +70C) or extended-industrial (-40C to +85C) temperature range. By Maxim Integrated Products