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ADM489

Full-Duplex, Low Power, Slew Rate Limited, EIA RS-485 Transceivers

GENERALDESCRIPTION TheADM488andADM489arelowpower,differentiallinetransceiverssuitableforcommunicationonmultipointbustransmissionlines.TheyareintendedforbalanceddatatransmissionandcomplywithbothElectronicsIndustriesAssociation(EIA)RS-485andRS-422standards.Bo

ADM489

Full-Duplex, Low Power, Slew Rate Limited, EIA RS-485 Transceivers

FEATURES MeetsEIARS-485andRS-422standards 250kbpsdatarate Single5V±10supply ?7Vto+12Vbuscommon-moderange 12kΩinputimpedance 2kVEFTprotectionmeetsIEC1000-4-4 HighEMimmunitymeetsIEC1000-4-3 ReducedslewrateforlowEMinterference Short-circuitprotection E

ADM489

低功耗、限擺率RS-485收發(fā)器，還具有接收器和驅(qū)動(dòng)器使能控制功能; ? 符合EIA RS-485標(biāo)準(zhǔn)\n\n? 數(shù)據(jù)速率：250 kbps\n\n? 5 V ± 10%單電源\n\n? 總線共模范圍：–7 V至+12 V\n\n? 輸入阻抗：12 kΩ;

ADM488和ADM489均為低功耗差分線路收發(fā)器，適用于多點(diǎn)總線傳輸線路通信。\n\n????? 這些器件主要用于平衡數(shù)據(jù)傳輸，符合EIA標(biāo)準(zhǔn)RS-485和RS-422。兩款產(chǎn)品均內(nèi)置一個(gè)單通道差分線路驅(qū)動(dòng)器和一個(gè)單通道差分線路接收器，適用于全雙工數(shù)據(jù)傳輸。\n\n????? ADM489還提供接收器和驅(qū)動(dòng)器使能控制功能。\n\n????? 輸入阻抗為12 kΩ，允許一條總線上連接32個(gè)收發(fā)器。\n\n????? ADM488/ADM489采用+5 V ± 10%單電源供電。熱關(guān)斷電路可防止總線競(jìng)爭(zhēng)或輸出短路導(dǎo)致功耗過(guò)大。故障條件下，如果檢測(cè)到內(nèi)部驅(qū)動(dòng)器電路的溫度顯著升高，此特性將強(qiáng)制驅(qū)動(dòng)器輸出進(jìn)入高阻抗?fàn)顟B(tài)。\n\n????? 如果輸入未連接（浮地），接收器所具有的故障安全特性將使輸出保持邏輯高狀態(tài)。ADM488/ADM489采用BiCMOS工藝制造，這是一種將低功耗CMOS與快速開(kāi)關(guān)雙極性技術(shù)相結(jié)合的先進(jìn)混合工藝技術(shù)。\n\n????? 兩款器件的額定溫度范圍為工業(yè)溫度范圍，提供DIP、SOIC和TSSOP封裝。

ADM489A

5 V, Slew-Rate Limited, Low Power, 250 kbps, Full Duplex EIA RS-485 Transceiver (with DE/RE); ? Complies with ANSI TIA/EIA-485-A-1998 and ISO 8482: 1987(E)\n\n? 250 kbps data rate\n\n? Single 5 V ± 10% supply\n\n? ?7 V to +12 V bus common-mode range\n\n\n\n? Connect up to 32 nodes on the bus\n\n? Reduced slew rate for low EM interference\n\n? Short-circuit protection\n\n? 30 μA supply current;

The ADM488A and ADM489A are low power, differential line transceivers suitable for communication on multipoint bus transmission lines. They are intended for balanced data transmission and comply with both RS-485 and RS-422 standards of the Electronics Industries Association (EIA). Both products contain a single differential line driver and a single differential line receiver, making them suitable for full-duplex data transfer. The ADM489A contains an additional receiver and driver enable control.\n\n The input impedance is 12 kΩ, allowing 32 transceivers to be connected on the bus. The ADM488A/ADM489A operate from a single 5 V ± 10% power supply.\n\n Excessive power dissipation that is caused by bus contention or output shorting is prevented by a thermal shutdown circuit. This feature forces the driver output into a high impedance state if, during fault conditions, a significant temperature increase is detected in the internal driver circuitry.The receiver contains a fail-safe feature that results in a logic high output state if the inputs are unconnected (floating).\n\n The ADM488A/ADM489A are fabricated on BiCMOS, an advanced mixed technology process combining low power CMOS with fast switching bipolar technology.\n\n The ADM488A/ADM489A are fully specified over the industrial temperature range and are available in SOIC and MSOP packages.\n\nApplicationsLow power RS-485 and RS-422 systemsDTE-DCE interfacePacket switchingLocal area networksData concentrationData multiplexersIntegrated services digital network (ISDN)

ADM489A

Full-Duplex, Low Power, Slew Rate Limited, EIA RS-485 Transceivers

GENERALDESCRIPTION TheADM488AandADM489Aarelowpower,differentiallinetransceiverssuitableforcommunicationonmultipointbustransmissionlines.TheyareintendedforbalanceddatatransmissionandcomplywithbothRS-485andRS-422standardsoftheElectronicsIndustriesAssociation(E

ADM489A

Full-Duplex, Low Power, Slew Rate Limited, EIA RS-485 Transceivers

FEATURESComplieswithANSITIA/EIA-485-A-1998andISO8482:1987(E) 250kbpsdatarate±4kVHBMESDprotectiononallpins Single5V±10supply?7Vto+12Vbuscommon-moderangeConnectupto32nodesonthebusReducedslewrateforlowEMinterferenceShort-circuitprotection 30μAsupp

ADM489ABRMZ

Full-Duplex, Low Power, Slew Rate Limited, EIA RS-485 Transceivers

GENERALDESCRIPTION TheADM488AandADM489Aarelowpower,differentiallinetransceiverssuitableforcommunicationonmultipointbustransmissionlines.TheyareintendedforbalanceddatatransmissionandcomplywithbothRS-485andRS-422standardsoftheElectronicsIndustriesAssociation(E

ADM489ABRMZ

絲?。?a target="_blank" title="Marking" href="/f0g/marking.html">F0G；Package：MSOP；Full-Duplex, Low Power, Slew Rate Limited, EIA RS-485 Transceivers

FEATURESComplieswithANSITIA/EIA-485-A-1998andISO8482:1987(E) 250kbpsdatarate±4kVHBMESDprotectiononallpins Single5V±10supply?7Vto+12Vbuscommon-moderangeConnectupto32nodesonthebusReducedslewrateforlowEMinterferenceShort-circuitprotection 30μAsupp

ADM489ABRMZ-REEL7

Full-Duplex, Low Power, Slew Rate Limited, EIA RS-485 Transceivers

GENERALDESCRIPTION TheADM488AandADM489Aarelowpower,differentiallinetransceiverssuitableforcommunicationonmultipointbustransmissionlines.TheyareintendedforbalanceddatatransmissionandcomplywithbothRS-485andRS-422standardsoftheElectronicsIndustriesAssociation(E

ADM489ABRMZ-REEL7

絲?。?a target="_blank" title="Marking" href="/f0g/marking.html">F0G；Package：MSOP；Full-Duplex, Low Power, Slew Rate Limited, EIA RS-485 Transceivers

FEATURESComplieswithANSITIA/EIA-485-A-1998andISO8482:1987(E) 250kbpsdatarate±4kVHBMESDprotectiononallpins Single5V±10supply?7Vto+12Vbuscommon-moderangeConnectupto32nodesonthebusReducedslewrateforlowEMinterferenceShort-circuitprotection 30μAsupp