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MAX3385E Datasheet

Part NameDescriptionManufacturer
MAX3385E ±15kV ESD-Protected, 3.0V to 5.5V, Low-Power, up to 250kbps, True RS-232 Transceiver MaximIC
Maxim Integrated MaximIC
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General Description
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 enhanced 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 transmitter 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 0.1µF capacitors for operation from a +3.3V supply. Each device is guaranteed to run at data rates of 250kbps while maintaining RS-232 output levels.
The MAX3385E has two receivers and two drivers. It features a 1µA shutdown mode that reduces power consumption and extends battery life in portable systems. Its receivers can remain active in shutdown mode, allowing external devices such as modems to be monitored using only 1µA supply current.
The MAX3385E is available in a space-saving SSOP package in either the commercial (0°C to +70°C) or extended-industrial (-40°C to +85°C) temperature range.

Features
♦ ESD Protection for RS-232 I/O Pins
   ±15kV—Human Body Model
   ±8kV—IEC 1000-4-2, Contact Discharge
   ±15kV—IEC 1000-4-2, Air-Gap Discharge
♦ Latchup Free
♦ 300µA Supply Current
♦ 1µA Low-Power Shutdown with Receivers Active
♦ 250kbps Guaranteed Data Rate
♦ 250µs Time to Exit Shutdown with 3kΩ Load on V+
♦ 6V/µs Guaranteed Slew Rate
♦ Meets EIA/TIA-232 Specifications Down to 3.0V

Applications
   Hand-Held Equipment
   Battery-Powered Equipment
   Peripherals
   Printers

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