MAX3235E:±15kV ESD保护、1µA、250kbps、3.3V/5V、双路RS-232收发器,内置电容

The MAX3233E/MAX3235E are EIA/TIA-232 and V.28/V.24 communications interfaces with automatic shutdown/wake-up features, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection. All transmitter outputs and receiver inputs are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge, to ±8kV using IEC 1000-4-2 Contact Discharge, and to ±15kV using the Human Body Model. The MAX3233E operates from a +3.3V supply; the MAX3235E operates from +5.0V. All devices achieve a 1µA supply current using Maxim's revolutionary AutoShutdown Plus™ feature. These devices automatically enter a low-power shutdown mode when the following two conditions occur: either the RS-232 cable is disconnected or the transmitters of the connected peripherals are inactive, and the UART driving the transmitter inputs is inactive for more than 30 seconds. They turn on again when they sense a valid transition at any transmitter or receiver input. AutoShutdown Plus saves power without changes to the existing BIOS or operating system. The MAX3233E/MAX3235E have internal dual charge pumps requiring no external capacitors. Both transceivers have a proprietary low-dropout transmitter output stage that enables true RS-232 performance from a +3.0V to +3.6V supply for the MAX3233E or a +4.5V to +5.5V supply for the MAX3235E. These devices are guaranteed to operate up to 250kbps. Both are available in space-saving 20-pin wide SO or plastic DIP packages.

关键特性
  • ESD Protection for RS-232 I/O Pins
    • ±15kV—Human Body Model
    • ±8kV—IEC 1000-4-2, Contact Discharge
    • ±15kV—IEC 1000-4-2, Air-Gap Discharge
  • Latchup Free
  • 1µA Supply Current
  • AutoShutdown Plus-1997 EDN Magazine Innovation of the Year
  • Single-Supply Operation
    • +3.0V to +3.6V (MAX3233E)
    • +4.5V to +5.5V (MAX3235E)
  • 250kbps Guaranteed Data Rate
  • 6V/µs Guaranteed Slew Rate
  • Meets EIA/TIA-232 Specifications Down to 3.0V (MAX3233E)
  • Internal Charge-Pump Capacitors
MAX3233E、MAX3235E:典型工作电路
MAX3233E、MAX3235E:典型工作电路
应用
  • 电池供电应用
  • 蜂窝电话
  • 嵌入式系统
  • 手持式装置
  • 外设
  • 亚笔记本与掌上电脑
数据手册DataSheet
语言下载文件备注
英文MAX3233E-MAX3235E.pdfRev 2; 09/2004
关键参数
Part NumberVSUPPLY
(V)
TxRxData Rate
(kbps)
ICC
(mA)
Internal Charge PumpExt. CapsESD Protect.
(±kV)
Rx Active in ShutdnPackage/PinsBudgetary
Price
mintypSee Notes
MAX3233E3.3222500.3Yes0152
  • PDIP(N)/20
  • SOIC/20
$4.62 @1k
MAX3235E5
  • PDIP(N)/20
  • SOIC/20
$4.48 @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
MAX3235ECPP停止供货PDIP(N),;20引脚;219.2mm²0°C至+70°CRoHS/无铅:否
MAX3235ECPP+G36停止供货PDIP;0°C至+70°C参考数据资料
MAX3235ECWP停止供货SOIC,;20引脚;SOIC H;20引脚0°C至+70°CRoHS/无铅:否
MAX3235ECWP+G36生产中SOIC,;20引脚;SOIC H;0°C至+70°CRoHS/无铅:无铅
MAX3235ECWP+TG36生产中SOIC,;20引脚;SOIC H;0°C至+70°CRoHS/无铅:无铅
MAX3235ECWP-T停止供货SOIC,;20引脚;SOIC H;20引脚0°C至+70°CRoHS/无铅:否
MAX3235EEPP停止供货PDIP(N),;20引脚;219.2mm²-40°C至+85°CRoHS/无铅:否
MAX3235EEPP+G36停止供货PDIP;-40°C至+85°C参考数据资料
MAX3235EEWP停止供货SOIC,;20引脚;SOIC H;20引脚-40°C至+85°CRoHS/无铅:否
MAX3235EEWP+G36生产中SOIC,;20引脚;SOIC H;-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?
MAX3235EEWP-T停止供货SOIC,;20引脚;SOIC H;20引脚-40°C至+85°CRoHS/无铅:否
MAX3233E-MAX3235E.pdf MAX3235E
Determining Clock Accuracy Requirements for UART Communications MAX3206E
Design Considerations for Data-Lump Cables MAX3387E
MAX3235E.pdf MAX3235E
MAX3233E-MAX3235E.pdf MAX3235E