MAX3244E

±15kV ESD保护、1µA、1Mbps、3.0V至5.5V、RS-232收发器,提供AutoShutdown Plus


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说明

The MAX3224E/MAX3225E/MAX3226E/MAX3227E/MAX3244E/MAX3245E are 3V-powered EIA/TIA-232 and V.28/V.24 communications interfaces with automatic shutdown/wakeup 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, ±8kV using IEC 1000-4-2 Contact Discharge, and ±15kV using the Human Body Model.

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 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 MAX3225E/MAX3227E/MAX3245E also feature MegaBaud™ operation, guaranteeing 1Mbps for high-speed applications such as communicating with ISDN modems. The MAX3224E/MAX3226E/MAX3244E guarantee 250kbps operation. The transceivers have a proprietary low-dropout transmitter output stage enabling true RS-232 performance from a +3.0V to +5.5V supply with a dual charge pump. The charge pump requires only four small 0.1µF capacitors for operation from a 3.3V supply. The MAX3224E–MAX3227E feature a logic-level output (READY) that asserts when the charge pump is regulating and the device is ready to begin transmitting.

All devices are available in a space-saving TQFN, SSOP, and TSSOP (MAX3224E/MAX3225E/MAX3244E/MAX3245E) packages.
MAX3224E、MAX3225E、MAX3226E、MAX3227E、MAX3244E、MAX3245E:典型工作电路 MAX3224E、MAX3225E、MAX3226E、MAX3227E、MAX3244E、MAX3245E:典型工作电路 放大+

关键特性

  • For Space-Constrained Applications:
    • MAX3228E/MAX3229E: ±15kV ESD-Protected, +2.5V to +5.5V, RS-232 Transceivers in UCSP™
    • MAX3222E/MAX3232E/MAX3241E/MAX3246E: ±15kV ESD-Protected, Down to 10nA, +3.0V to +5.5V, Up to 1Mbps, True RS-232 Transceivers (MAX3246E Available in UCSP)
  • For Low-Voltage or Data Cable Applications:
    • MAX3380E/MAX3381E: +2.35V to +5.5V, 1µA, 2Tx/2Rx RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins

应用

  • 汽车
  • 电池供电设备
  • 蜂窝电话
  • 手持式装置
  • 笔记本电脑、亚笔记本电脑与掌上电脑
  • 外设
  • 打印机
Part NumberVSUPPLY
(V)
TxRxData Rate
(kbps)
ICC
(mA)
Internal Charge PumpExt. CapsCap. Value
(µF)
ESD Protect.
(±kV)
Rx Active in ShutdnPackage/PinsBudgetary
Price
mintypnomSee Notes
MAX3224E 
3.3
5
222500.3Yes40.1152
PDIP/20
SSOP/20
TQFN/20
TSSOP/20
$2.95 @1k
MAX3225E 2210002
PDIP/20
SSOP/20
TQFN/20
TSSOP/20
$2.95 @1k
MAX3226E 112502
SSOP/16
TQFN/16
TSSOP/16
$1.87 @1k
MAX3227E 1110002
SSOP/16
TQFN/16
TSSOP/16
$1.87 @1k
MAX3244E 352505
SOIC (W)/28
SSOP/28
TSSOP/28
$5.36 @1k
MAX3245E 3510005
SOIC (W)/28
SSOP/28
TQFN/36
TSSOP/28
$3.83 @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

  • MAX3244ECAI+
  • MAX3244ECAI+T
  • MAX3244ECUI+
  • MAX3244ECUI+T
  • MAX3244ECWI+
  • MAX3244ECWI+T
  • MAX3244EEAI+
  • MAX3244EEAI+T
  • MAX3244EEUI+
  • MAX3244EEUI+T
  • MAX3244EEWI+
  • MAX3244EEWI+T
  • 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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