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MAX3387E Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX3387E Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 16 page For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. General Description The MAX3387E 3V powered EIA/TIA-232 and V.28/V.24 is a communications interface with low power require- ments, high data-rate capabilities, and enhanced elec- trostatic 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 capa- ble of running at data rates up to 250kbps while main- taining RS-232 compliant output levels. The MAX3387E has a unique VL pin that allows interop- eration 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. Applications Subnotebook/Palmtop Computers PDAs and PDA Cradles Cell Phone Data Cables Battery-Powered Equipment Hand-Held Equipment Peripherals Features o VL Pin for Compatibility with Mixed-Voltage Systems o ±15kV ESD Protection on Rx Inputs and Tx Outputs o Low 300µA Supply Current o Guaranteed 250kbps Data Rate o 1µA AutoShutdown Plus™ with Receivers Active o Meets EIA/TIA-232 Specifications Down to 3.0V 3V, ±15kV ESD-Protected, AutoShutdown Plus RS-232 Transceiver for PDAs and Cell Phones ________________________________________________________________ Maxim Integrated Products 1 24 23 22 21 20 19 18 17 1 2 3 4 5 6 7 8 FORCEOFF VCC GND T1OUT C2+ C1- V+ C1+ TOP VIEW T2OUT T3OUT R1IN R2IN T2IN T1IN V- C2- 16 15 14 13 9 10 11 12 R3IN VL R1OUT R2OUT R3OUT FORCEON T3IN INVALID TSSOP MAX3387E C1 0.1 µF C2 0.1 µF MAX3387E R2OUT 13 R1OUT 14 R2IN 17 GND 22 RS-232 OUTPUTS TTL/CMOS INPUTS T2IN 8 T1IN 7 C2- 5 C2+ 4 C1- 3 C1+ 1 R1IN 18 T2OUT 20 T1OUT 21 V- 6 V+ 2 VCC VL C4 0.1 µF 23 15 CBYPASS +3.3V T3IN 10 T3OUT 19 RS-232 INPUTS TTL/CMOS OUTPUTS C3 0.1 µF 5k 5k VL VL R3OUT 12 R3IN 16 5k VL FORCEOFF 24 INVALID 9 11 FORCEON Typical Operating Circuit 19-1561; Rev 1; 10/99 Pin Configuration Ordering Information AutoShutdown Plus is a trademark of Maxim Integrated Products. PART MAX3387ECUG MAX3387EEUG TEMP. RANGE 0°C to +70°C -40°C to +85°C PIN-PACKAGE 24 TSSOP 24 TSSOP |
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