2024年2月25日发(作者：南门松)
19-0312; Rev 0; 9/94+2.7V to +3.6V-Powered, 1µA Supply Current,3-Driver/5-Receiver, True RS-232 Transceiver_______________General Description____________________________FeaturesThe MAX3212 uses Maxim’s new proprietary Auto-Shutdown mode to reduce supply current to 1µA. TheBETTER THAN BIPOLAR!MAX3212, with 3 RS-232 drivers and 5 RS-232 receivers,o1µA Supply Current Using AutoShutdownis intended for 2.7V to 3.6V-powered EIA/TIA-232E andoOperates from Single +2.7V to +3.6V SupplyV.28/V.24 serial interface. True RS-232 levels are main-o28-Pin SSOP or Wide SO Packagestained across the operating range. A guaranteed dataoMeets All EIA/TIA-232E & EIA/TIA-562 Specificationsrate of 235kbps provides compatibility with popular soft-oMouse Driveability–Guaranteedware for communicating with personal -Cost, Surface-Mount External ComponentsSupply current is reduced to 1o235kbps Guaranteed Data Rate–AutoShutdown feature. When the MAX3212 does notµA with Maxim’s newLapLink™Compatiblesense a valid signal level on the receiver inputs, the on-o+5V Logic Compatibleboard power supply and drivers shut down. This occursoComplementary Receiver Output Always Activeif the RS-232 cable is disconnected or if the transmit-ters of the connected peripheral are turned off. The sys-oFlow-Through Pinouttem turns on again when a valid level is applied to any__________Typical Operating CircuitRS-232 receiver input. As a result, the system savespower without changes to the existing software.
0.68µF1N605015µH1N6050+3.0VA second power-management feature is incorporated to0.33µF32712160.33µFpermit automatic shutdown when the RS-232 connectionVCCV+LNLPV-is valid but inactive. In this case, a transition detector26FORCEONfacilitates shutdown when the receivers are presented+3.0V25with stationary RS-232 levels for long FF5TRANThree-state drivers are provided on receiver outputs so6MAX3212INVALIDthat multiple receivers, generally of different interface13T1INT1OUT19standards, can be wire-ORed at the UART. TheT1MAX3212 is available in 28-pin SO and SSOP packages.14T2INT2T2OUT1815T3INT3T3OUT17________________________Applications8R1OUTR1R1IN24Notebook and Palmtop Computers5kPeripherals9R2OUTR2R2IN23Instruments5kBattery-Powered Equipment10R3OUTR3R3IN225k______________Ordering Information11R4OUTR4R4IN215kPARTTEMP. RANGEPIN-PACKAGE12R5OUTR5R5IN20MAX3212CWI0°C to +70°C28 Wide SOMAX3212CAI0°C to +70°C28 SSOP7R5OUTBR5MAX3212EWI-40°C to +85°C28 Wide SO5kMAX3212EAI-40°C to +85°C28 SSOPENGND+3.0V428AUTOSHUTDOWN OPERATION
2024年2月25日发(作者：南门松)
19-0312; Rev 0; 9/94+2.7V to +3.6V-Powered, 1µA Supply Current,3-Driver/5-Receiver, True RS-232 Transceiver_______________General Description____________________________FeaturesThe MAX3212 uses Maxim’s new proprietary Auto-Shutdown mode to reduce supply current to 1µA. TheBETTER THAN BIPOLAR!MAX3212, with 3 RS-232 drivers and 5 RS-232 receivers,o1µA Supply Current Using AutoShutdownis intended for 2.7V to 3.6V-powered EIA/TIA-232E andoOperates from Single +2.7V to +3.6V SupplyV.28/V.24 serial interface. True RS-232 levels are main-o28-Pin SSOP or Wide SO Packagestained across the operating range. A guaranteed dataoMeets All EIA/TIA-232E & EIA/TIA-562 Specificationsrate of 235kbps provides compatibility with popular soft-oMouse Driveability–Guaranteedware for communicating with personal -Cost, Surface-Mount External ComponentsSupply current is reduced to 1o235kbps Guaranteed Data Rate–AutoShutdown feature. When the MAX3212 does notµA with Maxim’s newLapLink™Compatiblesense a valid signal level on the receiver inputs, the on-o+5V Logic Compatibleboard power supply and drivers shut down. This occursoComplementary Receiver Output Always Activeif the RS-232 cable is disconnected or if the transmit-ters of the connected peripheral are turned off. The sys-oFlow-Through Pinouttem turns on again when a valid level is applied to any__________Typical Operating CircuitRS-232 receiver input. As a result, the system savespower without changes to the existing software.
0.68µF1N605015µH1N6050+3.0VA second power-management feature is incorporated to0.33µF32712160.33µFpermit automatic shutdown when the RS-232 connectionVCCV+LNLPV-is valid but inactive. In this case, a transition detector26FORCEONfacilitates shutdown when the receivers are presented+3.0V25with stationary RS-232 levels for long FF5TRANThree-state drivers are provided on receiver outputs so6MAX3212INVALIDthat multiple receivers, generally of different interface13T1INT1OUT19standards, can be wire-ORed at the UART. TheT1MAX3212 is available in 28-pin SO and SSOP packages.14T2INT2T2OUT1815T3INT3T3OUT17________________________Applications8R1OUTR1R1IN24Notebook and Palmtop Computers5kPeripherals9R2OUTR2R2IN23Instruments5kBattery-Powered Equipment10R3OUTR3R3IN225k______________Ordering Information11R4OUTR4R4IN215kPARTTEMP. RANGEPIN-PACKAGE12R5OUTR5R5IN20MAX3212CWI0°C to +70°C28 Wide SOMAX3212CAI0°C to +70°C28 SSOP7R5OUTBR5MAX3212EWI-40°C to +85°C28 Wide SO5kMAX3212EAI-40°C to +85°C28 SSOPENGND+3.0V428AUTOSHUTDOWN OPERATION