MAX3131

3V至5.5V、IrDA红外收发器,集成的RS-232接口


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说明

The MAX3130/MAX3131 combine an IrDA 1.2 compatible 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 ambient 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 signals to and from the external UART, allowing IrDA communication 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 transmitter 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 single UART for both infrared and RS-232 communication. The infrared transmitter input and infrared receiver output 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 components: four small 0.1µF capacitors, a photodiode, an infrared LED, and a current-setting resistor.
MAX3130、MAX3131:引脚配置 MAX3130、MAX3131:引脚配置 放大+

关键特性

  • Integrated RS-232 and IrDA in Single 28-Pin SSOP Package
  • 370µA Supply Current
  • IrDA 1.2 Compatible: 2.4kbps to 115kbps Data Rate
  • On-Board IR Encoder/Decoder Allows Use of Non-IrDA UARTs
  • +3.0V to +5.5V Single-Supply Operation
  • Meet EIA/TIA-232 Specifications Down to +3V
  • 200mA, High-Current Infrared LED Drive
  • 1µA Low-Power Shutdown with RS-232 Receivers Active

应用

  • 电池供电应用
  • 蜂窝电话
  • 手持式装置
  • IrDA应用
  • 掌上电脑
  • PDA及其它手持设备
  • 外设

请查看具体的参数规格 Appletalk and IrDA (4)


Part NumberFunctionsVSUPPLY
(V)
Data Rate
(kbps)
Single Ended TxSingle Ended RxShutdnµP I/FICC
(mA)
ICC (Shutdown)
(µA)
Package/PinsBudgetary
Price
maxmaxSee Notes
MAX3130 IrDA/RS-232 Transceiver3.0 to 5.5115.222YesTTL/CMOS110
SSOP HYBRID/28
$4.67 @1k
MAX3131 
SSOP HYBRID/28
$7.87 @1k

Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。
申请可靠性报告: MAX3131 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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