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MAX3221E

±15kV ESD-Protected, 1μA, 3.0V to 5.5V, 250kbps, RS-232 Transceivers with AutoShutdown

GeneralDescription TheMAX3221E/MAX3223E/MAX3243Eare3V-poweredEIA/TIA-232andV.28/V.24communicationsinterfaceswithautomaticshutdown/wakeupfeatures,highdataratecapabilities,andenhancedelectrostaticdischarge(ESD)protection.Alltransmitteroutputsandreceiverinputsareprotec

MAX3221E

MAX3221E 3V to 5.5V Single-Channel RS-232 Line Driver and Receiver With ±15kV IEC ESD Protection

1Features ?ESDprotectionforRS-232pins –±15kVHuman-bodymodel(HBM) –±8kV(IEC61000-4-2,Contactdischarge) –±15kV(IEC61000-4-2,Air-gapdischarge) ?MeetsorexceedstherequirementsofTIA/ EIA-232-FandITUv.28standards ?Operateswith3Vto5.5VVCCsupply ?Operatesupt

MAX3221E

±15kV ESD保護(hù)、1μA、3.0V至5.5V、250kbps RS-232收發(fā)器，帶有AutoShutdown; ? 針對(duì)空間受限的應(yīng)用：\n? MAX3228E/MAX3229E：±15kV ESD保護(hù)、+2.5V至+5.5V RS-232收發(fā)器，采用UCSP?封裝\n\n? MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E：±15kV ESD保護(hù)、電流低至10nA、+3.0V至+5.5V供電、速率高達(dá)1Mbps、真正的RS-232收發(fā)器（MAX3246E采用UCSP封裝）\n\n\n\n\n? 針對(duì)數(shù)據(jù)線應(yīng)用：\n? MAX3380E/MAX3381E：+2.35V至+5.5V、1μA、2Tx/2Rx RS-232收發(fā)器，具有±15kV ESD保護(hù)I/O和邏輯引腳;

MAX3221E/MAX3223E/MAX3243E均為3V電源供電的EIA/TIA-232和V.28/V.24通信接口，具有自動(dòng)關(guān)斷/喚醒功能、高數(shù)據(jù)速率和增強(qiáng)型靜電放電(ESD)保護(hù)。所有發(fā)射器輸出和接收器輸入均使用IEC 1000-4-2氣隙放電受到±15kV的保護(hù)，使用IEC 1000-4-2接觸放電受到±8kV的保護(hù)，并使用人體模型受到±15kV的保護(hù)。\n\n MAX3221E/MAX3223E/MAX3243E采用Maxim開(kāi)創(chuàng)性的AutoShutdown?功能，可實(shí)現(xiàn)1μA的電源電流。當(dāng)RS-232電纜斷開(kāi)連接或連接的外設(shè)發(fā)射器關(guān)閉時(shí)，這些器件會(huì)進(jìn)入低功耗關(guān)斷模式，從而無(wú)需更改現(xiàn)有的BIOS或操作系統(tǒng)也能實(shí)現(xiàn)節(jié)電。\n\n 這些收發(fā)器配備專(zhuān)有的低壓差發(fā)射器輸出級(jí)，可利用雙電荷泵通過(guò)+3.0V至+5.5V電源提供真正的RS-232性能。電荷泵僅需要四個(gè)0.1μF的小電容即可在+3.3V電源下工作。每個(gè)器件都保證以250kbps的數(shù)據(jù)速率運(yùn)行，同時(shí)保持RS-232輸出電平。\n\n MAX3221E僅包含一個(gè)驅(qū)動(dòng)器和一個(gè)接收器，構(gòu)成超小尺寸的單電源RS-232收發(fā)器。MAX3223E具有兩個(gè)驅(qū)動(dòng)器和兩個(gè)接收器。MAX3243E是一款完整的3驅(qū)動(dòng)器/5接收器串行端口，非常適用于筆記本電腦或小型筆記本電腦。它還包括兩個(gè)始終處于活動(dòng)狀態(tài)的同相接收器輸出，無(wú)需對(duì)可能斷電的電路中的保護(hù)二極管進(jìn)行正向偏置，也能監(jiān)控外部設(shè)備。\n\n MAX3221E、MAX3223E和MAX3243E采用節(jié)省空間的TQFN、SSOP和TSSOP封裝。\n\n ?\n\n

MAX3221E

具有 +/-15kV IEC-ESD 保護(hù)的 3V 至 5.5V 單通道 250kbps RS-232 線路驅(qū)動(dòng)器/接收器; ? ESD protection for RS-232 pins \n? ±15-kV Human-body model (HBM)\n? ±8 kV (IEC 61000-4-2, Contact discharge)\n? ±15 kV (IEC 61000-4-2, Air-gap discharge)\n \n? Meets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standards\n? Operates with 3-V to 5.5-V VCC upply\n? Operates up to 250 kbit/s\n? One driver and one receiver\n? Low standby current: 1 μA typical\n? Accepts 5-V logic input with 3.3-V supply\n? Auto-power-down feature automatically disables drivers for power savings\n? Alternative high-speed device (1 Mbit/s) \n? SN75C3221E and SN65C3221E;

The MAX3221E is a single driver, single receiver RS-232 solution operating from a single VCC supply. The RS-232 pins provide IEC 61000-4-2 ESD protection. The device meets the requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the serial-port connector. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. These devices operate at data signaling rates up to 250 kbit/s and a maximum of 30-V/μs driver output slew rate.\n\nFlexible control options for power management are available. Auto-power down disables driver and charge pump when the receiver is disconnected or the remote driver is power down. The drivers can be manually enabled or disabled. INVALID output goes low when receiver input is unconnected or power off.

MAX3221E

3-V TO 5.5-V SINGLE-CHANNEL RS-232 LINE DRIVER/RECEIVER WITH 15-kV IEC ESD PROTECTION

MAX3221E

15kV ESD-Protected, 1uA, 3.0V to 5.5V, 250kbps, RS-232 Transceivers with AutoShutdown

MAX3221E

3-V TO 5.5-V SINGLE-CHANNEL RS-232 LINE DRIVER/RECEIVER WITH 15-kV IEC ESD PROTECTION

MAX3221E

15kV ESD-Protected, 1uA, 1Mbps, 3.0V to 5.5V RS-232 Transceivers

MAX3221EAE

1μA Supply-Current, True 3V to 5.5V RS 232 Transceiver with AutoShutdown

GeneralDescription TheMAX3221/MAX3223/MAX3243achieve1μAsupplycurrentwithMaxim’srevolutionaryAutoShutdown?feature.WhentheMAX3221/MAX3223/MAX3243donotsenseavalidsignallevelontheirreceiverinputs,theon-boardpowersupplyanddriversshutdown.ThisoccursiftheRS-232cabl

MAX3221ECAE

15,-15kV ESD-Protected, 1muA, 3.0V to 5.5V, 250kbps, RS-232 Transceivers

GeneralDescription TheMAX3221E/MAX3223E/MAX3243Eare3V-poweredEIA/TIA-232andV.28/V.24communicationsinterfaceswithautomaticshutdown/wakeupfeatures,highdataratecapabilities,andenhancedelectrostaticdischarge(ESD)protection.Alltransmitteroutputsandreceiverinputsareprotec