MAX3485E

3.3V供电、±15kV ESD保护、12Mbps、限摆率、真RS-485/RS-422收发器


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说明

Devices in the MAX3483E family (MAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E) are ±15kV ESD-protected, +3.3V, low-power transceivers for RS-485 and RS-422 communications. Each device contains one driver and one receiver. The MAX3483E and MAX3488E feature slew-rate-limited drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250kbps. The partially slew-rate-limited MAX3486E transmits up to 2.5Mbps. The MAX3485E, MAX3490E, and MAX3491E transmit at up to 12Mbps.

All devices feature 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.

Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if both inputs are open circuit.

The MAX3488E, MAX3490E, and MAX3491E feature full-duplex communication, while the MAX3483E, MAX3485E, and MAX3486E are designed for half-duplex communication.
MAX3483E、MAX3485E、MAX3486E、MAX3488E、MAX3490E、MAX3491E:引脚配置和典型工作电路 MAX3483E、MAX3485E、MAX3486E、MAX3488E、MAX3490E、MAX3491E:引脚配置和典型工作电路 放大+

关键特性

  • ESD Protection for RS-485 I/O Pins
    • ±15kV-Human Body Model
    • ±8kV-IEC 1000-4-2, Contact Discharge
    • ±15kV-IEC 1000-4-2, Air-Gap Discharge
  • Operate from a Single +3.3V Supply-No Charge Pump Required
  • Interoperable with +5V Logic
  • Guaranteed 12Mbps Data Rate (MAX3485E/MAX3490E/MAX3491E)
  • Slew-Rate Limited for Errorless Data Transmission (MAX3483E/MAX3488E)
  • 2nA Low-Current Shutdown Mode (MAX3483E/MAX3485E/MAX3486E/MAX3491E)
  • -7V to +12V Common-Mode Input Voltage Range
  • Full-Duplex and Half-Duplex Versions Available
  • Industry-Standard 75176 Pinout (MAX3483E/MAX3485E/MAX3486E)
  • Current-Limiting and Thermal Shutdown for Driver Overload Protection

应用

  • 工业控制局域网
  • 集成服务数字网络
  • 分组交换技术
  • 电信
  • 用于EMI敏感应用的收发器
Part NumberTx/RxDuplexVSUPPLY
(V)
ICC
(mA)
Data Rate
(kbps)
ESD Protect.
(±kV)
Tx ENRx ENICC (Shutdn.)
(µA)
Rx/Tx on BusRx Failsafe w/ InputsSlew Rate LimitingOper. Temp.
(°C)
Package/PinsBudgetary
Price
typmintypSee Notes
MAX3483E 1Tx + 1RxHalf3.3125015YesYes0.00232OpenNo
-40 to +85
0 to +70
PDIP/8
SOIC (N)/8
$2.43 @1k
MAX3485E Half12000YesYes0.002
PDIP/8
SOIC (N)/8
$2.44 @1k
MAX3486E Half2500YesYes0.002
PDIP/8
SOIC (N)/8
$2.36 @1k
MAX3488E Full250NoNo-
PDIP/8
SOIC (N)/8
$2.36 @1k
MAX3490E Full12000NoNo-
PDIP/8
SOIC (N)/8
$2.36 @1k
MAX3491E Full12000YesYes0.002
PDIP/14
SOIC (N)/14
$2.36 @1k
查看所有RS-485/RS-422 Line Driver/Receivers (205)
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。

技术资料

应用笔记 367 Explanation of Maxim RS-485 Features

质量和环境数据

产品可靠性报告: MAX3485E.pdf 
无铅封装的锡(Sn)晶须报告

其它资源

RS-485资源

工具和模型

  • MAX3485E IBIS模型
  • 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。

    质量管理体系 >
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    类型 编号 PDF 标题
    应用笔记 367 Explanation of Maxim RS-485 Features