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深圳市万瑞尔科技有限公司MAXIM代理商美信中国代理商0755-28269789、MAX483、MAX485、MAX487-MAX491以及MAX1487规格书,中文资料本文是Maxim正式英文资料的译文,Maxim不对翻译中存在的差异或由此产生的错误负责。请注意译文中可能存在文字组织或翻译错误,如需确认任何词语的准确性,请参考Maxim提供的英文版资料。索取免费样品和最新版的数据资料,请访问Maxim的主页:概述MAX481、MAX483、MAX485、MAX487,MAX488,MAX489,MAX490,MAX491以及MAX1487是用于RS-485与RS-422通信的低功耗收发器,每个器件中都具有一个驱动器和一个接收器。MAX483、MAX487、MAX488以及MAX489具有限摆率驱动器,可以减小EMI,并降低由不恰当的终端匹配电缆引起的反射,实现最高250kbps的无差错数据传输。MAX481、MAX485、MAX490、MAX491、MAX1487的驱动器摆率不受限制,可以实现最高2.5Mbps的传输速率。这些收发器在驱动器禁用的空载或满载状态下,吸取的电源电流在120(A至500(A之间。另外,MAX481、MAX483与MAX487具有低电流关断模式,仅消耗0.1?A。所有器件都工作在5V单电源下。驱动器具有短路电流限制,并可以通过热关断电路将驱动器输出置为高阻状态,防止过度的功率损耗。接收器输入具有失效保护特性,当输入开路时,可以确保逻辑高电平输出。MAX487与MAX1487具有四分之一单位负载的接收器输入阻抗,使得总线上最多可以有128个MAX487/MAX1487收发器。使用MAX488-MAX491可以实现全双工通信,而MAX481、MAX483、MAX485、MAX487与MAX1487则为半双工应用设计。_______________________________应用深圳市万瑞尔科技有限公司MAXIM代理商美信中国代理商0755-28269789低功耗RS-485收发器低功耗RS-422收发器电平转换器用于EMI敏感应用的收发器工业控制局域网____________________下一代器件的特性〓容错应用MAX3430:±80V故障保护、失效保护、1/4单位负载、+3.3V、RS-485收发器MAX3440E-MAX3444E:±15kVESD保护、±60V故障保护、10Mbps、失效保护、RS-485/J1708收发器〓对于空间受限应用MAX3460-MAX3464:+5V、失效保护、20Mbps、ProfibusRS-485/RS-422收发器MAX3362:+3.3V、高速、RS-485/RS-422收发器,采用SOT23封装MAX3280E-MAX3284E:±15kVESD保护、52Mbps、+3V至+5.5V、SOT23、RS-485/RS-422、真失效保护接收器MAX3293/MAX3294/MAX3295:20Mbps、+3.3V、SOT23、RS-485/RS-422发送器〓对于多通道收发器应用MAX3030E-MAX3033E:±15kVESD保护、+3.3V、四路RS-422发送器〓对于失效保护应用MAX3080-MAX3089:失效保护、高速(10Mbps)、限摆率RS-485/RS-422收发器〓对于低电压应用MAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E:+3.3V供电、±15kVESD保护、12Mbps、限摆率、真正的RS-485/RS-422收发器MAX481/MAX483/MAX485/MAX487-MAX491/MAX1487低功耗、限摆率、RS-485/RS-422收发器________________________________________________________________MaximIntegratedProducts1_____________________________________________________________________选择表19-0122;Rev8;10/03MAX481MAX483MAX485MAX487深圳市万瑞尔科技有限公司MAXIM代理商美信中国代理商0755-28269789(Mbps)SLEW-RATELIMITEDLOW-POWERSHUTDOWNRECEIVER/DRIVERENABLEQUIESCENTCURRENT(?A)NUMBEROFTRANSMITTERSONBUSPINCOUNTHalfHalfHalfHalfFullFullFullFullHalf2.50.252.50.250.250.252.52.52.5NoYesNoYesYesYesNoNoNoYesYesNoYesNoNoNoNoNoYesYesYesYesNoYesNoYesYes300120300120120120300300230深圳市万瑞尔科技有限公司MAXIM代理商美信中国代理商0755-28269789定购信息在本资料的最后给出。MAX481/MAX483/MAX485/MAX487-MAX491/MAX1487低功耗、限摆率、RS-485/RS-422收发器2_______________________________________________________________________________________ABSOLUTEMAXIMUMRATINGSSupplyVoltage(VCC).............................................................12VControlInputVoltage(RE,DE)...................-0.5Vto(VCC+0.5V)DriverInputVoltage(DI).............................-0.5Vto(VCC+0.5V)DriverOutputVoltage(A,B)...................................-8Vto+12.5VReceiverInputVoltage(A,B).................................-8Vto+12.5VReceiverOutputVoltage(RO).....................-0.5Vto(VCC+0.5V)ContinuousPowerDissipation(TA=+70°C)8-PinPlasticDIP(derate9.09mW/°Cabove+70°C)....727mW14-PinPlasticDIP(derate10.00mW/°Cabove+70°C)..800mW8-PinSO(derate5.88mW/°Cabove+70°C).................471mW14-PinSO(derate8.33mW/°Cabove+70°C)...............667mW8-Pin?MAX(derate4.1mW/°Cabove+70°C)..............830mW8-PinCERDIP(derate8.00mW/°Cabove+70°C).........640mW14-PinCERDIP(derate9.09mW/°Cabove+70°C).......727mWOperatingTemperatureRangesMAX4__C__/MAX1487C_A...............................0°Cto+70°CMAX4__E__/MAX1487E_A.............................-40°Cto+85°CMAX4__MJ_/MAX1487MJA...........................-55°Cto+125°CStorageTemperatureRange.............................-65°Cto+160°CLeadTemperature(soldering,10sec).............................+300°CDCELECTRICALCHARACTERISTICS(VCC=5V±5%,TA=TMINtoTMAX,unlessotherwisenoted.)(Notes1,2)Stressesbeyondthoselistedunder“AbsoluteMaximumRatings”maycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedintheoperationalsectionsofthespecificationsisnotimplied.Exposuretoabsolutemaximumratingconditionsforextendedperiodsmayaffectdevicereliability.VVIN=-7VVIN=12VVIN=-7VVIN=12VInputCurrent(A,B)深圳市万瑞尔科技有限公司MAXIM代理商美信中国代理商0755-28269789〓48-7V≤VCM≤12V,MAX487/MAX1487RINReceiverInputResistance-7V≤VCM≤12V,alldevicesexceptMAX487/MAX1487R=27〓(RS-485),Figure40.4V≤VO≤2.4VR=50〓(RS-422)IO=4mA,VID=-200mVIO=-4mA,VID=200mVVCM=0V-7V≤VCM≤12VDE,DI,REDE,DI,REMAX487/MAX1487,DE=0V,VCC=0Vor5.25VDE,DI,RER=27〓or50〓,Figure4R=27〓or50〓,Figure4R=27〓or50〓,Figure4DE=0V;VCC=0Vor5.25V,alldevicesexceptMAX487/MAX1487CONDITIONSk〓12?A±1IOZRThree-State(highimpedance)OutputCurrentatReceiverV0.4VOLReceiverOutputLowVoltage3.5VOHReceiverOutputHighVoltagemV70〓VTHReceiverInputHysteresisV-0.20.2ReceiverDifferentialThresholdVoltage-0.2mA0.25mA-0
本文标题:MAX485规格书,MAX487中文技术资料,MAX481规格书,MAX483、MAX488、MAX
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