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MAX3130-MAX3131 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX3130-MAX3131 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 MAX3130/MAX3131 combine an IrDA 1.2 compati- ble infrared transceiver with an RS-232 interface—all in a single 3V-powered hybrid microcircuit. The infrared transceiver supports IrDA data rates of 2.4kbps to 115kbps. The infrared receive channel provides a high- gain/low-noise PIN-diode amplifier with 100µA of ambi- ent photodiode current rejection at a +3V supply. A high-power LED driver capable of sinking 200mA is included in the infrared transmit path. The on-board encoder/decoder (ENDEC) compresses/stretches sig- nals to and from the external UART, allowing IrDA com- munication even with non-IrDA UARTs. A 2-driver/2-receiver RS-232 transceiver supports data rates up to 120kbps. A proprietary, high-efficiency, dual charge-pump power supply and a low-dropout trans- mitter combine to deliver true RS-232 performance from a single +3.0V to +5.5V supply. Selectable shutdown for IR and RS-232 circuitry reduces supply current to 1µA. The MAX3130 is optimized for applications using a sin- gle UART for both infrared and RS-232 communication. The infrared transmitter input and infrared receiver out- put are multiplexed with one RS-232 transmitter input and one RS-232 receiver output, respectively. The MAX3131’s IrDA transceiver and RS-232 transceivers are separate and have their own data inputs and outputs. Both these devices require a minimum of external com- ponents: four small 0.1µF capacitors, a photodiode, an infrared LED, and a current-setting resistor. Applications Personal Digital Assistants (PDAs) Palmtop Computers Battery-Powered Systems Hand-Held Equipment Peripherals IrDA Applications Cellular Phones Features o Integrated RS-232 and IrDA in Single 28-Pin SSOP Package o 370µA Supply Current o IrDA 1.2 Compatible: 2.4kbps to 115kbps Data Rate o On-Board IR Encoder/Decoder Allows Use of Non-IrDA UARTs o +3.0V to +5.5V Single-Supply Operation o Meet EIA/TIA-232 Specifications Down to +3V o 200mA, High-Current Infrared LED Drive o 1µA Low-Power Shutdown with RS-232 Receivers Active 3V to 5.5V, IrDA Infrared Transceiver with Integrated RS-232 Interface ________________________________________________________________ Maxim Integrated Products 1 28 27 26 25 24 23 22 21 20 19 18 17 16 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 R2OUT R2IN T2OUT RSSD V- C2- IRSD C2+ C1- C1+ V+ N.C. LEDC PGND PINC AGND AVCC N.C. VCC GND BAUD16 T1OUT R1IN R1OUT IRMODE (TXD) T2IN T1IN EDGEDET (RXD) SSOP TOP VIEW MAX3130 MAX3131 ( ) ARE FOR MAX3131 19-1402; Rev 0; 11/98 PART MAX3130CAI MAX3130EAI MAX3131CAI 0°C to +70°C -40°C to +85°C 0°C to +70°C TEMP. RANGE PIN-PACKAGE 28 SSOP 28 SSOP 28 SSOP Pin Configuration Ordering Information MAX3131EAI -40°C to +85°C 28 SSOP |
Similar Part No. - MAX3130-MAX3131 |
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Similar Description - MAX3130-MAX3131 |
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