MAX3212 Datasheet | Maxim Integrated

Description The MAX3212 uses Maxim’s new proprietary Auto Shutdown mode to reduce supply current to 1µA. The MAX3212, with 3 RS-232 drivers and 5 RS-232 receivers, is intended for 2.7V to 3.6V-powered EIA/TIA-232E and V.28/V.24 serial interface. True RS-232 levels are maintained across the operating range. A guaranteed data rate of 235kbps provides patibility with popular software for municating with personal puters. Supply current is reduced to 1µA with Maxim’s new Auto Shutdown feature . When the MAX3212 does not sense a valid signal level on the receiver inputs, the onboard power supply and drivers shut down. This occurs if the RS-232 cable is disconnected or if the transmitters of the connected peripheral are turned off. The system turns on again when a valid level is applied to any RS-232 receiver input. As a result, the system saves power without changes to the existing software. A second power-management feature is incorporated to permit automatic shutdown when the RS-232 connection is valid but inactive. In this case, a transition detector facilitates shutdown when the receivers are presented with stationary RS-232 levels for long periods. Three-state drivers are provided on receiver outputs so that multiple receivers, generally of different interface standards, can be wire-ORed at the UART. The MAX3212 is available in 28-pin SO and SSOP packages. ____________________________Features BETTER THAN BIPOLAR! o o o o o o o 1µA Supply Current Using Auto Shutdown Operates from Single +2.7V to +3.6V Supply 28-Pin SSOP or Wide SO Packages Meets All EIA/TIA-232E & EIA/TIA-562 Specifications Mouse Driveability- Guaranteed Low-Cost, Surface-Mount External ponents 235kbps Guaranteed Data Rate- Lap Link™ patible o +5V Logic patible o plementary Receiver Output Always Active o Flow-Through Pinout MAX3212- __________Typical Operating Circuit 0.68µF 1N6050 15µH +3.0V 0.33µF 3 27 1 VCC V+ LN 26 FORCEON +3.0V 25 FORCEOFF 5 TRAN 6 INVALID T1 T2 T3 R1 5k 9 R2OUT R2 5k 10 R3OUT R3...