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MAX3387E：3V, ±15kV ESD-Protected, AutoShutdown Plus RS-232 Transceiver for PDAs and Cell Phones

Separate Logic Supplies Ensure Compatibility with Mixed ASIC Logic Levels

The MAX3387E 3V powered EIA/TIA-232 and V.28/V.24 is a communications interface with low power requirements, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection. The MAX3387E has three receivers and three transmitters. All RS-232 inputs and outputs are protected to ±15kV using the IEC 1000-4-2 Air-Gap Discharge method, ±8kV using the IEC 1000-4-2 Contact Discharge method, and ±15kV using the Human Body Model. A proprietary low-dropout transmitter output stage enables 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. The MAX3387E is capable of running at data rates up to 250kbps while maintaining RS-232 compliant output levels. The MAX3387E has a unique VL pin that allows interoperation in mixed-logic voltage systems. Both input and output logic levels are pin programmable through the VL pin. The MAX3387E is available in a space-saving TSSOP package.

Key Features VL Pin for Compatibility with Mixed-Voltage Systems ±15kV ESD Protection on Rx Inputs and Tx Outputs Low 300µA Supply Current Guaranteed 250kbps Data Rate 1µA AutoShutdown Plus™ with Receivers Active Meets EIA/TIA-232 Specifications Down to 3.0V

MAX3387E: Typical Operating Circuit Applications/Uses Battery-Powered Applications Cellular Data Cables Handheld Equipment PDAs and PDA Cradles Peripherals Subnotebook and Palmtop Computers

DataSheet

Parametrics

Quality and Environmental Data

• MAX3387E.pdf

Related Products

• MAX3248E：+3.0V to +5.5V, 10nA, 250kbps RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins
• MAX3386E：3.0V, ±15kV ESD-Protected RS-232 Transceivers for PDAs and Cell Phones

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