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MAX212
+3V供电、低功耗、真RS-232收发器


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状态
状况:生产中。

概述
完整的数据资料 (PDF, 128kB)
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The MAX212 RS-232 transceiver is intended for 3V-powered EIA/TIA-232E and V.28/V.24 communication interfaces where three drivers and five receivers are needed with minimum power consumption. The operating voltage range extends from 3.6V down to 3.0V while still maintaining true RS-232 and EIA/TIA-562 voltage levels.

A 1µA typical shutdown mode reduces power consumption, extending battery life in portable systems. While shut down, all receivers can remain active or can be disabled under logic control. This enables a system incorporating the CMOS MAX212 to be in low-power shutdown mode and monitor incoming RS-232 activity.

A guaranteed data rate of 120kbps provides compatibility with popular software for communicating with personal computers.

Three-state drivers on all receiver outputs are provided so that multiple receivers, generally of different interface standards, can be wire-ORed at the UART.

The MAX212 is available in both small-outline (SO) and shrink-small-outline (SSOP) packages. The SSOP package occupies less than half of the board area required by the equivalent SO package.

关键特性   应用/使用
SUPERIOR TO BIPOLAR:
  • Operates from Single +3.0V to +3.6V Supply
  • 24-Pin SSOP or Wide SO Packages
  • Meets All EIA/TIA-232E and EIA/TIA-562 Specifications
  • 3mA Max Supply Current (Unloaded)
  • 1µA Low-Power Shutdown Mode
  • All Receivers Active During Low-Power Shutdown
  • Mouse Compatible at 3.0V
  • Low-Cost, Surface-Mount External Components
  • 120kbps Guaranteed Data Rate-LapLink™ Compatible
  • Three-State Receiver Outputs
  • Evaluation Kit Available
  • Flow-Through Pinout

 
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    Key Specifications:  RS-232 Line Driver/Receivers
    Part Number VSUPPLY
    (V)
    Tx Rx Data Rate
    (kbps)
    ICC
    (mA)
    Internal Charge Pump Ext. Caps Cap. Value
    (µF)
    Rx Active in Shutdn Package/Pins Price
    min typ nom See Notes
    MAX212  3.3 3 5 120 1.5 Yes 2 0.33/0.68 5
    SOIC(W)/24
    SSOP/24
    $3.29 @1k
    查看所有RS-232 Line Driver/Receivers (152)

    图表
    MAX212:典型工作电路
    典型工作电路

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    参考文献: 19-0162; Rev. 2; 1994-02-01
    本页最后一次更新: 2007-07-17


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