MAX3221:1µA电源电流、+3V至+5.5V、真RS-232收发器,带有AutoShutdown

The MAX3221/MAX3223/MAX3243 achieve 1µA supply current with Maxim’s revolutionary AutoShutdown™ feature. When the MAX3221/MAX3223/MAX3243 do not sense a valid signal level on their 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. The MAX3221/MAX3223/MAX3243 require only 0.1µF capacitors in 3.3V operation, and can operate from input voltages ranging from +3.0V to +5.5V. 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. The MAX3221 is a 1-driver/1-receiver 16-pin SSOP version of the 20-pin 2-driver/2-receiver MAX3223. The MAX3243 is a 3-driver/5-receiver with a complementary always-active receiver for external monitoring in a variety of 28 pin packages. Please see order information table for package offerings.

关键特性
  • Integrated Charge Pump Circuitry Simplifies Power Requirements
    • Eliminates the Need for a ±12V Supply
    • Operation From a Single +3.3V or +5V Supply
  • 1µA Supply Current in Shutdown Mode Saves Power
    • AutoShutdown Feature is Enabled After No Activity on Receiver Inputs for 30μs
    • Software Control Option for Shutdown
应用
  • 电池供电设备
  • 外设
数据手册DataSheet
语言下载文件备注
英文MAX3221-MAX3243.pdfRev 9; 02/2015
关键参数
Part NumberVSUPPLY
(V)
TxRxData Rate
(kbps)
ICC
(mA)
Internal Charge PumpExt. CapsCap. Value
(µF)
Rx Active in ShutdnPackage/PinsBudgetary
Price
mintypnomSee Notes
MAX3221
  • 3.3
  • 5
111200.3Yes40.11
  • SSOP/16
  • TSSOP/16
$1.67 @1k
MAX3223222
  • PDIP(N)/20
  • SSOP/20
  • TSSOP/20
$2.56 @1k
MAX3243351
  • SOIC(W)/28
  • SSOP/28
  • TSSOP/28
$4.45 @1k
技术资料
质量和环境数据
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX3221CAE停止供货MAX3221CAE+SSOP,;16引脚;50mm²0°C至+70°CRoHS/无铅:否
MAX3221CAE+生产中SSOP,;16引脚;50mm²0°C至+70°CRoHS/无铅:无铅
MAX3221CAE+T生产中SSOP,;16引脚;50mm²0°C至+70°CRoHS/无铅:无铅
MAX3221CAE-T停止供货MAX3221CAE+TSSOP,;16引脚;50mm²0°C至+70°CRoHS/无铅:否
MAX3221CUE停止供货MAX3221CUE+TSSOP,;16引脚;33.4mm²0°C至+70°CRoHS/无铅:否
MAX3221CUE+生产中TSSOP,;16引脚;33.4mm²0°C至+70°CRoHS/无铅:无铅
MAX3221CUE+T生产中TSSOP,;16引脚;33.4mm²0°C至+70°CRoHS/无铅:无铅
MAX3221CUE-T停止供货MAX3221CUE+TTSSOP;16引脚0°C至+70°C参考数据资料
MAX3221EAE停止供货MAX3221EAE+SSOP,;16引脚;50mm²-40°C至+85°CRoHS/无铅:否
MAX3221EAE+生产中SSOP,;16引脚;50mm²-40°C至+85°CRoHS/无铅:无铅
型号状况推荐替代产品封装:类型 引脚 占位面积封装图 编码/变更 *温度RoHS/无铅?
MAX3221EAE+T生产中SSOP,;16引脚;50mm²-40°C至+85°CRoHS/无铅:无铅
MAX3221EAE-T停止供货MAX3221EAE+TSSOP,;16引脚;50mm²-40°C至+85°CRoHS/无铅:否
MAX3221EUE停止供货MAX3221EUE+TSSOP,;16引脚;33.4mm²-40°C至+85°CRoHS/无铅:否
MAX3221EUE+生产中TSSOP,;16引脚;33.4mm²-40°C至+85°CRoHS/无铅:无铅
MAX3221EUE+T生产中TSSOP,;16引脚;33.4mm²-40°C至+85°CRoHS/无铅:无铅
MAX3221EUE-T停止供货MAX3221EUE+TTSSOP;16引脚-40°C至+85°C参考数据资料
MAX3221-MAX3243.pdf MAX3243
Determining Clock Accuracy Requirements for UART Communications MAX3206E
RS-232 Features Explained MAX3381E
MAX3221.pdf MAX3221