MAX3212

+2.7V至+3.6V供电、1µA电源电流、3驱动器/5接收器、真RS-232收发器


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说明

The MAX3212 uses Maxim's new proprietary AutoShutdown mode to reduce supply current to 1µA. The MAX3212, with 3 RS-232 drivers and 5 RS-232 receivers, is intended for 2.7V to 3.6V-powered EIA/TIA-232E and V.28/V.24 serial interface. True RS-232 levels are maintained across the operating range. A guaranteed data rate of 235kbps provides compatibility with popular software for communicating with personal computers.

Supply current is reduced to 1µA with Maxim's new AutoShutdown feature. When the MAX3212 does not sense a valid signal level on the receiver inputs, the on-board power supply and drivers shut down. This occurs if the RS-232 cable is disconnected or if the transmitters of the connected peripheral are turned off. The system turns on again when a valid level is applied to any RS-232 receiver input. As a result, the system saves power without changes to the existing software.

A second power-management feature is incorporated to permit automatic shutdown when the RS-232 connection is valid but inactive. In this case, a transition detector facilitates shutdown when the receivers are presented with stationary RS-232 levels for long periods.

Three-state drivers are provided on receiver outputs so that multiple receivers, generally of different interface standards, can be wire-ORed at the UART. The MAX3212 is available in 28-pin SO and SSOP packages.
MAX3212:典型工作电路 MAX3212:典型工作电路 放大+

关键特性

BETTER THAN BIPOLAR!
  • 1µA Supply Current Using AutoShutdown
  • Operates from Single +2.7V to +3.6V Supply
  • 28-Pin SSOP or Wide SO Packages
  • Meets All EIA/TIA-232E & EIA/TIA-562 Specifications
  • Mouse Driveability-Guaranteed
  • Low-Cost, Surface-Mount External Components
  • 235kbps Guaranteed Data Rate-LapLink® Compatible
  • +5V Logic Compatible
  • Complementary Receiver Output Always Active
  • Flow-Through Pinout

应用

  • 电池供电应用
  • 仪表
  • 笔记本电脑和掌上电脑
  • 外设
Part NumberVSUPPLY
(V)
TxRxData Rate
(kbps)
ICC
(mA)
Internal Charge PumpExt. CapsCap. Value
(µF)
Rx Active in ShutdnPackage/PinsBudgetary
Price
mintypnomSee Notes
MAX3212 
3
3.3
352351.5Yes20.33/0.685
SOIC (W)/28
SSOP/28
$4.89 @1k
查看所有RS-232 Line Driver/Receivers (136)
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。

CAD Symbols and Footprints

  • MAX3212CAI+
  • MAX3212CAI+T
  • MAX3212EAI+
  • 型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    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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