MAX3485E:3.3V供电、±15kV ESD保护、12Mbps、限摆率、真RS-485/RS-422收发器

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.

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
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
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
数据手册DataSheet
语言下载文件备注
英文MAX3483E-MAX3491E.pdfRev 0; 04/1999
关键参数
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
MAX3483E1Tx + 1RxHalf3.3125015YesYes0.00232OpenNo
  • -40 to +85
  • 0 to +70
  • PDIP(N)/8
  • SOIC(N)/8
$2.25 @1k
MAX3485EHalf12000YesYes0.002
  • PDIP(N)/8
  • SOIC(N)/8
MAX3486EHalf2500YesYes0.002
  • PDIP(N)/8
  • SOIC(N)/8
MAX3488EFull250NoNo-
  • PDIP(N)/8
  • SOIC(N)/8
MAX3490EFull12000NoNo-
  • PDIP(N)/8
  • SOIC(N)/8
MAX3491EFull12000YesYes0.002
  • PDIP(N)/14
  • SOIC(N)/14
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
MAX3485ECPA停止供货MAX3485ECPA+PDIP(N),;8引脚;81.9mm²0°C至+70°CRoHS/无铅:否
MAX3485ECPA+生产中PDIP(N),;8引脚;81.9mm²0°C至+70°CRoHS/无铅:无铅
MAX3485ECSA停止供货MAX3485ECSA+SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:否
MAX3485ECSA+生产中SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:无铅
MAX3485ECSA+T生产中SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:无铅
MAX3485ECSA-G069停止供货N.SO;0°C至+70°C参考数据资料
MAX3485ECSA-T停止供货MAX3485ECSA+TSOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:否
MAX3485ECSA-TG069停止供货SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:否
MAX3485EEPA停止供货PDIP(N),;8引脚;81.9mm²-40°C至+85°CRoHS/无铅:否
MAX3485EESA停止供货MAX3485EESA+SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
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?
MAX3485EESA+生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX3485EESA-G002停止供货N.SO;-40°C至+85°C参考数据资料
MAX3485EESA-T停止供货MAX3485EESA+TSOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX3485EESA-TG002停止供货N.SO;-40°C至+85°C参考数据资料
MAX3485EESA/GH9停止供货MAX3485EESA+SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX3485EESA/GH9-T停止供货MAX3485EESA+SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX3485ESA/GG8生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX3485ESA/GG8-T停止供货MAX3485ESA+N.SO;-40°C至+85°C参考数据资料
MAX3483E-MAX3491E.pdf MAX3491E
Explanation of Maxim RS-485 Features MAX489
MAX3485E.pdf MAX3485E
MAX3483E-MAX3491E.pdf MAX3491E