【经验】基于收发器ISL3152EIBZ的RS485浪涌保护措施
RS485总线在较为恶劣的电磁环境下工作，为确保设备的正常工作，产品设计必须符合相关要求的电磁兼容性规则，根据实际要求部署相应的RS485端口防护措施。通常比较常见的防护对象为静电放电(ESD)、电快速瞬变(EFT)与浪涌（Surge）等。浪涌一般来源于开关瞬变或雷击现象，国际标准 IEC 61000-4-5浪涌抗扰度试验详细规定了受试电子电气设备抗扰度的测试波形、方法和级别等。国标方面对齐GB/T 17626.5浪涌(冲击)抗扰度试验标准。本文主要针对RS485的浪涌保护措施展开描述，典型电路应用基于RENESAS的收发器ISL3152EIBZ。
基于ISL3152EIBZ的防护等级设计主要分三种，分别为LEVEL 2 (1kV)，LEVEL 3 (2kV)与LEVEL 4(4kV)，其他级别的要求可参考标准条文的具体描述。下图1为LEVEL 2 (1kV)的典型应用与BOM。
图1 LEVEL 2 (1kV)典型应用原理图 BOM表
LEVEL 2级别要求，收发器外围保护器件主要为TVS与限流电阻。其中TVS选择了双向SM712（7V、12V），限流电阻Rs选取了低阻值的耐冲击厚膜电阻。图1中的第二部分为具体BOM清单，设计者可根据参数灵活调整器件选型。
LEVEL 3级别要求，收发器外围保护器件主要包含TVS，过流保护器（OCP）与过压保护器（OVP）。图2为LEVEL 3 (2kV)的典型应用与BOM。要实现较高的浪涌保护水平，除了具备TVS之外，电路设计还需增加过流和过压保护器件（TSPD）。过流保护可保护接口部分的TVS免受超额定值的高电流冲击，而过压保护则可保护OCP部分免受高瞬态电压的影响。
图2 LEVEL 3 (2kV)典型应用原理图 BOM表
LEVEL 4级别要求，该级别属于比较高的要求，同样收发器外围保护器件主要包含TVS，过流保护器与过压保护器。与LEVEL 3不同的是，LEVEL 4过压保护使用了GDT，其通过电离不导电的气体来实现，可以承受较高能量的冲击，与TSPD相比，其触发时间可能较长。图3为LEVEL 4 (4kV)的典型应用与BOM。
图3 LEVEL 4 (4kV)典型应用原理图 BOM表
通常接口电路使用分立TVS器件，需要考虑TVS器件在PCB上的摆放位置和走线，PCB布局中可将TVS与接口芯片与地尽量靠近，这样在一定程度上可以避免影响能量泄放速度。目前市场上也出现了部分集成片上TVS的接口芯片或保护器产品，设计者可根据性能与成本要求合理选型。
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目录- 企业简介和产品概览 静电保护器（ESD） 瞬态抑制二极管（TVS） 半导体放电管（TSS） 双向触发二极管（SIDAC） 压敏电阻（MOV） 陶瓷气体放电管（GDT） 玻璃气体放电管（SPG） 微型防雷模组（MLPM） 自恢复保险丝（PPTC） RS485/422收发器 CAN收发器 网口RJ45连接器 分立功率器件 EMI保护元器件
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SERIES,SA90C,10D241K,SMD0805-010,10SMBJ180A,14D431K,LCDA05C-8,LCDA05C-4,25D,P6KE220CA,SA40CA,ESD05V32D-C,HCM1012GD900B05,10SMBT7.5A,ESD05V88D-CBP,10D821KEC,SMD0805-005,UN2E8-150ML,UN1812-760HS,ESD05V88D-CBD,SMCJ64A-AT,SMBJ48CA-AT,P3800TB,TPSMBJ30A,P3800TA,SMDJ90,UN3220-471HS,P6KE100CA,5KP28C,SMDT7.0A,P6SMB SERIES,5KP28A,14D681KJ,TPSMA100A,P3800SC,P3800SB,SMDJ85,6.0SMAJ54CA,ESD30V12D-C,P3800SA,ESD30V12D-A,SMDJ80,SMAJ8.5CA,SMAJ180C,SMAJ180A,UN2E5-90LSMD,TP5.0SMDJ40A,SMDJ75CA-AT,20D122KJ,10SMBT36A,ESD3.3V04D-LC,SMAJ350CA-AT,14D361KSC,5.0SMDJ220A,SMDJ78,UN30-160,UN16-900,ESD05V08P-LC,SMDJ75,25D121K,5KP8.0C,14D561KJ,SMDJ70,5KP8.0A,UN2K8-450L,1.5SMC10A,UN0805-420H,TPSMA6J26CA,SMDJ16CA,SMCJS SERIES,14D560K,SMBJ130C,SMBJ130A,5.0SMDJ350A,SMDJ64,SMDJ60,34S210J,5KP120CA,ESD12V52D-CF,30KP120A,UNS3220 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SERIES,14D751KSC,SMD1812-300-16V,SM8Z28A,SMDJ19,ESD12V52D-HA,SMDJ18,SMDJ17,SMDJ16,TPSMB10J16CA,SMDJ15,TPSMBJ,SMDJ14,TPSMB56CA,SMDJ13,SMDJ12,SMDJ11,SMDJ10,SMCJ36A,SMD0805-010-30V,P6KE30,32D621KJ,SMCJ36C,SA190CA,5.0SMDJ75C,5.0SMDJ75A,UNA-SMD,15SMBJ160CA,SMF54CA,TPSMA6J18A,P4SMA91A,P6KE27,TPSMAJ,P6SMB170A,P0300DM,UN1812-390HS,P6KE24,P6KE22,P6KE43,SMCJ45CA,UN3E8-200HSMD,UN0603E,P6KE75CA,P0300EA,P0300EB,P0300EC,P6KE39,TPSMA6J19A,UN2H8,P6KE36,TCF03025U12002A SERIES,P6KE33,10SMBJ64A,SMCJ58CA,P6KE51,TPSMBJ110CA,SMDJ180CA-AT,25D511KJ,SMD1206-300,SMDJ7.5CA,TPSMA75A,UN1812-270HS,5.0SMDJ17A-AT,1.5KE18CA,14D201KJ,UN30-110,BLC03C-4,UN2K8-350L-2,5.0SMDJ70CA,UN2E5,UN2K8-350L-1,SMCJ33A,P6KE47,SMCJ33C,TPSMA6J16A,UN2E8,UN2E8-150HL,P4SMA350A,P6KE62,P4SMA6.8CA,ESD03V23T-LC,ESD03V23T-LA,ESD08V52D-A,15SMBJ180A,14D301K,10SMBT30A,P6KE56,ESD08V52D-C,TPSMA6J17A,5.0SMDJ33CA,UNS3K,UN2E6-SMD SERIES,UN1812-390H,TPSMDJ24CA,20D361K,40D361KJ,4.0SMF13CA,SMDJ160A,SMBJ160CA-AT,TP5.0SMDJ28A,
优恩半导体（UNSEMI）ESD静电保护/雷击浪涌保护器件/串口芯片产品选型指南（英文）
目录- Company Introduction ESD Protection Diodes（ESD） Transient Voltage Suppressor（TVS） Thyristor Surge Suppressors（TSS） Sidac Thyristor（SIDAC） Metal Oxide Varistors（MOV） Gas Discharge Tube（GDT） Spark Gap Protectors（SPG） Micro Surge Protection Module（Micro-SPD） Polymeric Positive Thermal Coefficient（PPTC） RS485/422 Transceiver CAN Transceiver RJ45 Modular Jack connectors Small signal devices EMI Protection devices
型号- SMDJ-AT SERIES,UNS3K,07DXXKJ,UN2E8-XXXML SERIES,SMBJ,UN2E5-XXXLL SERIES,40DXXK SERIES,UN232,UN2E8-XXXL HV,4.0SMF SERIES,UN1812-XXXCSMD SERIES,10DXXKJ,5.0SMDJ-AT SERIES,P6KE SERIES,30KP SERIES,SACB SERIES,UNS1K SERIES,PXXXSC SERIES,P4KE,SMD0603 SERIES,10DXXK SERIES,10DXXKEC SERIES,UN490E,UN3E8-XXXHP,UNSDC12V-3L,07DXXK,07DXXL,UN3E5-XXXMSMD,20DXXK SERIES,PXXXSB,15KPS,PXXXSA,PXXXSB-2L,P4SMA SERIES,SA SERIES,SMAJ,UN2220 SERIES,05DXXKJ,SAC SERIES,SMF SERIES,PXXXSC,KXXXSA SERIES,20KP,5.0SMDJ SERIES,0402 SERIES,20KP SERIES,TPSMAJ SERIES,PXXXLB SERIES,SMCJ SERIES,UN3490,P4SMA,UNSDC24V-3L,SMDJ,UNS1K,UN3E6-XXXMM,UN65HVD75,UN2E8-XXXL HV SERIES,SMDT,UN1812 SERIES,UN3220 SERIES,1.5SMC,SA,UN2E8-XXXML,UNS4032 SERIES,UN2E8-XXXHL SERIES,UN2E5-XXXL HV,UNSDC58V-2L,SMD1210 SERIES,PXXXSD1,UN2E5-XXXLSMD,PXXXEC SERIES,UN3485,UN16,5KP,1.5KE SERIES,TP5.0SMDJ,14DXXL SERIES,07DXXKBC SERIES,UNS2K,UN2E8-XXXMSMD,UN2E5-XXXLL HV SERIES,10DXXKEC,UNSDC24V-2L,32DXXL SERIES,14DXXKJ SERIES,UN3E8-XXXHM SERIES,SMCJ,TPSMB SERIES,UN1210-XXXBSMD SERIES,UN3E6-XXXM,TPSMDJ SERIES,UN65HVD233,UN65HVD234,UN65HVD232,UN65HVD230,SMBJ-AT,UN2E5-XXXL,UN2E8-XXXM,UN1210-XXXBSMD,10DXXKJ SERIES,34SXX,KC SERIES,UN2E6-XXXLSMD SERIES,UN2E8-XXXH,UNB-XXXN-SMD,UN3E8-XXXHMF,32DXXKJ SERIES,UN1050,UN3232E,UNA-XXXM-SMD,UN1050ISODUB,PXXXG,32DXXKJ,40DXXK,UNS3220,UNB-XXXM-SMD,40DXXL,UN3085NE,SMCJS,UN2E8-XXXHSMD,TPSMB10J,32DXXK,32DXXL,PXXXEC,UN30,PXXXEB,PXXXEA,30KP,P6SMB SERIES,PXXXSC-2L SERIES,15KP,PXXXSC-2L,0603,SMD2920 SERIES,10SMBT,14DXXKJ,UN82C250,UNSRS485-2HL,UN82C251,10SMBJ,05DXXL SERIES,25DXXL SERIES,TPSMC SERIES,UN2H8-XXXL HV SERIES,UNSDC58V-3L,SM8Z SERIES,TPSMCJ SERIES,SM5Z,UN6,UN3E5-XXXL,UN3088E,KXXXG SERIES,PXXXTB,PXXXTA,UN2E5-XXXLSMD SERIES,KA SERIES,UNB-XXXN-SMD SERIES,UN3088ES,07DXXL SERIES,5KP SERIES,UN3485ISO,8KP SERIES,PXXXEA SERIES,UNA-XXXN/M SERIES,SMCJS SERIES,3KP,SM8Z,UN3E5-XXXLM,SMCJ-AT SERIES,LCE SERIES,UNC-XXXN/M SERIES,PXXXSA SERIES,UNSRS485-2H,SMCJ-AT,25DXXKJ SERIES,UN0805 SERIES,PXXXDM,POE58C,15SMBJ,PXXXTB SERIES,PXXXSB-2L SERIES,UNA-XXXN-SMD,40DXXKJ SERIES,UNS3220 SERIES,UN1206 SERIES,P4KE SERIES,SM5Z SERIES,UN2E8-XXXMSMD SERIES,UN3E6-XXXMM SERIES,05DXXK,05DXXL,UN600 SERIES,1012 SERIES,UNB-XXXN/M SERIES,8.0SMDJ,UNSRS485-2L,P6SMB,SACA SERIES,40DXXKJ,40DXXL SERIES,PXXXDM SERIES,SACA,UN0603 SERIES,SACB,UN2E5-XXXL SERIES,UN2H8-XXXLL HV SERIES,SMD2920,0402,8.0SMDJ SERIES,25DXXL,25DXXK,UN30 SERIES,10DXXL SERIES,20DXXL SERIES,25DXXKJ,5KPS,UNA-XXXN-SMD SERIES,UN485E,UN2E8-XXXHL,PXXXSB SERIES,UN485ES,PXXXTA SERIES,UN3E8-XXXHMF SERIES,UN2H8-XXXLL HV,SMDJ-AT,4.0SMF,SMF,TPSMB10J SERIES,0603 SERIES,5KPS SERIES,UN2E8-XXXH SERIES,KD SERIES,UN60,SMAJ-AT SERIES,TPSMDJ,UN1206-XXXASMD SERIES,UN2E8-XXXHSMD SERIES,UN3232E-T,UN1210 SERIES,14DXXKSC,07DXXKBC,10DXXK,UNSDC48V-2L,10DXXL,53DXXK,UN3E8-XXXHSMD SERIES,2012 SERIES,UN0805,UN3E5-XXXMSMD SERIES,KA,KB,UN1812-XXXCSMD,KC,TPSMCJ,UN2E8-XXXLL HV,KD,6.0SMAJ SERIES,14DXXKSC SERIES,UNS2K SERIES,10SMBJ SERIES,TP5.0SMDJ SERIES,SMD1812 SERIES,UN60 SERIES,5.0SMDJ,UN3490E,UNSDC48V-3L,20DXXKYC SERIES,SMD0603,SMD1812,KXXXSB SERIES,UN1206,UN16 SERIES,SMBJ SERIES,UNSRS422-2H,SMDT SERIES,UN1210,UNSRS422-2L,UN135 SERIES,TPSMBJ,PXXXLC SERIES,UNS4032,0201 SERIES,UN1206-XXXASMD,UN2H8-XXXL HV,5.0SMDJ-AT,UN3E5-XXXL SERIES,20DXXKYC,UN3485S,UN3E6-XXXM SERIES,34SXX SERIES,UN2E5-XXXLL,05DXXK SERIES,0201,UN3E8-XXXHP SERIES,UN3E8-XXXH SERIES,UN1042,UN3220,TPSMAJ,UN1040,UN2E8-XXXLL HV SERIES,15KP SERIES,8KP,UN2E5-XXXL HV SERIES,UN2E6-XXXLSMD,6.0SMAJ,UN3E8-XXXHSMD,32DXXK SERIES,34SXXJ SERIES,SMD1206 SERIES,SMBJ-AT SERIES,TPSMA SERIES,UNC-XXXM-SMD,LCE,UN600,14DXXK,UN6 SERIES,14DXXL,UNC-XXXN-SMD SERIES,UNSRS422-2HL,15SMBJ SERIES,SAC,SMD0805 SERIES,SMAJ SERIES,UN3E5-XXXLM SERIES,UN3E5-XXXLSMD SERIES,UN250 SERIES,UN3E8-XXXH,UN485CUA,UN488E,UN250,KB SERIES,PXXXLC,UN2E5-XXXLL HV,UN135,PXXXLB,PXXXLA,07DXXK SERIES,SMD1206,UN0603,UN1812,20DXXL,20DXXK,PXXXEB SERIES,10SMBT SERIES,1.5KE,14DXXK SERIES,UNC-XXXN-SMD,05DXXKJ SERIES,3KP SERIES,P6KE,07DXXKJ SERIES,UNS3K SERIES,KXXXSD1 SERIES,TPSMC,SMD0805,25DXXK SERIES,TPSMB,TPSMA6J SERIES,TPSMA,TPSMBJ SERIES,34SXXJ,20DXXKJ,SMD1210,20DXXKJ SERIES,SMDJ SERIES,UN2220,UN2E8-XXXM SERIES,TPSMA6J,UNSDC12V-2L,1.5SMC SERIES,15KPS SERIES,SMAJ-AT,PXXXLA SERIES,UN3E5-XXXLSMD
RENESAS ( 瑞萨电子）RS-485/422、RS-232和多协议收发器选型指南
描述- ●High Noise Immunity ■The RAA78815x transceivers have the Industry's highest EFT Immunity and Output Drive. ●Ultra Low Supply Current ■ISL3260xE Idle current is 9 times lower than that of low power transceiver ISL3172E. ●Space-Saving Small Package ■Reduced package size enables smaller, more compact products.
型号- ISL81387,ISL32273E,ISL32172E,ISL32277E,ISL3330,ISL3159E,ISL32601E,ISL3179E,ISL88011,ICL3222E,ISL3280E,ICL3226E,ISL85415,ISL83387E,ISL32272E,ISL28148,ISL32179E,ISL81334,ISL32600E,ISL28023,ISL32612E,ISL3331,ISL3259E,ISL3332,ISL3333,ISL3158E,ISL3283E,ISL3295E,ISL4223E,HIP4086,ICL3223E,ISL33002,ISL32174E,ISL32275E,ISL8485,ISL41387,ISL32603E,ISL4270E,ISL8117,ISL3298E,ISL80505,ICL3232E,ISL3282E,ISL33337E,ICL3224E,RX24T,RAA7884QT,ISL32173E,RAA7884QR,ISL32177E,ISL41334,ISL3249XE,ISL3247XE,ISL3245XE,ISL32614E,ISL315XE,ISL3243XE,ISL317XE,ISL3156E,ISL3260XE,ISL3176E,ICL3221E,RAA78815X,ISL33354E,ISL3160E,ISL3281E,ISL3172E,ISL3180E,ICL3225E
【IC】瑞萨RAA78817x系列RS-485收发器具有3kV电气快速瞬变（EFT）抗扰度，适用于工业网络
使用RS-485收发器的工业网络每天都会受到电快速瞬变（EFT）轰炸。这些瞬变通常以突发的形式发生，起源于由于感性负载中断（开关）、继电器触点弹跳等引起的开关瞬变。RAA78817x在3kV测试电压通过所有EFT测试。
产品 发布时间 : 2023-11-10
【应用】瑞萨推出基于Sub-GHz频段无线通信收发器Wi-SUN FAN 1.1解决方案，适用于无线IoT网络
很多用户在构建无线IoT系统时遇到很多挑战。他们希望在众多无线通信方式之中选择最佳的通信方式，希望让无线系统设计更加便捷，可以使用电池供电方式运行，高性价比的通信方式。面对这些挑战，瑞萨电子提出，基于R9A06G062的Sub-GHz无线通信收发器的解决方案。
应用方案 发布时间 : 2023-06-14
RS-485 Crash Course Part 2: Key Transceiver Parameters Tutorial
型号- ISL83083E,ISL83075E,ISL32495E,ISL83483,ISL83071E,ISL32475E,ISL83485,ISL32455E,ISL32435E,ISL83488,ISL32601E,ISL3159E,ISL32459E,ISL3179E,ISL3155E,ISL3175E,ISL3171E,ISL8488E,ISL83076E,ISL83088E,ISL83072E,ISL32470E,ISL83080E,ISL32498E,ISL32478E,ISL32600E,ISL8487E,ISL43485,ISL3259E,ISL32458E,ISL3158E,ISL8483E,ISL3178E,ISL8491E,ISL3174E,ISL3150E,ISL3170E,ISL83077E,ISL4489E,ISL81483,ISL83085E,ISL4485E,ISL8490E,ISL8485,ISL32485E,ISL32433E,ISL32457E,ISL81487,ISL32437E,ISL32603E,ISL3177E,ISL3153E,ISL3173E,ISL83078E,ISL32492E,ISL8490,ISL83086E,ISL32472E,ISL83070E,ISL32496E,ISL83082E,ISL32452E,ISL81487L,ISL32432E,ISL8485E,ISL81487E,ISL3156E,ISL83490,ISL83491,ISL3176E,ISL3152E,ISL3160E,ISL3172E,ISL3180E,ISL8489E
【产品】可同时支持RS-232和RS-485协议的单芯片双端口收发器芯片
ISL33354E/ISL33357E是Intersil推出的一款具有两个独立端口的双协议（RS-232/RS-485）收发器，符合RS-232标准，Rx输入可处理高达±25V。
新产品 发布时间 : 2017-10-31
RS-485 Transceivers RS-485 Transceivers in J1708 Physical Layer Applications of Heavy Duty Vehicles APPLICATION NOTE
型号- DS36277,ISL32455E,ISL81487
【产品】双端口，双协议RS232/RS485收发器，关断模式电流低至35μA
ISL3332/ISL3333是intersil推出的一款双端口IC收发器，每个端口可独立配置为单个RS-485/422收发器，或作为双（2 Tx，2 Rx）RS-232收发器。当两个端口设置为相同模式时，可用作两个RS-485/RS-422收发器或四个RS-232收发器。
新产品 发布时间 : 2018-02-16
TRANSCEIVERS RS-485/422, RS232 and Multi Protocol Low Power, high speed with the highest level of protection
型号- ISL81387,HIN232,ICL3238E,ISL83386E,HIN232A,ISL32495E,HIN208E,ISL3330,ISL3159E,ICL3223,ICL3221,ICL3222,ISL3232E,ISL4260E,HIN211E,ICL3226,ICL3222E,ISL4244E,ICL3226E,HIN202,ISL83387E,ISL33337,ISL32498E,ISL81334,ISL3332,ICL3232,ISL3333,ISL3243E,ICL3243E,ISL4243E,ISL4223E,ICL3223E,HIN202E,ISL3249XE,ISL41387,HIN206E,ICL3245,ICL3243,ISL315XE,ISL4270E,ISL317XE,RAA78815X,ICL3224E,ISL4238E,ISL33354,IEC61000,ISL32492E,ISL32496E,ISL41334,HIN213E,HIN232E,ISL3241E,ISL4241E,ICL3221E,ISL4221E,ISL4245E,ICL3225E,ICL3237E,ICL3245E
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可定制波导隔离器频率覆盖5.5GHz~110GHz，插损损低至0.25dB、隔离度、正向方向功率、封装尺寸参数。
最小起订量： 1pcs 提交需求>
提供是德(Keysight)，罗德(R&S)测试测量仪器租赁服务，包括网络分析仪、无线通讯综测仪、信号发生器、频谱分析仪、信号分析仪、电源等仪器租赁服务；租赁费用按月计算，租赁价格按仪器配置而定。
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