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LT1039ACSW16

製品説明
仕様・特性

LT1039A/LT1039A-16 Triple RS232 Driver/Receiver with Shutdown U DESCRIPTIO FEATURES s s s s s s s s s s s s s s s On-Chip ESD Protection: ±15kV Human Body Model ±15kV IEC-1000-4-2 Air Gap Test** ±8kV IEC-1000-4-2 Contact Test 125kBd Operation with 3kΩ/2500pF Load 250kBd Operation with 3kΩ/1000pF Load Outputs Can Be Driven ±30V Without Damage No Supply Current in Shutdown Operates from ±5V to ±15V Supplies Fully Protected Against Overload Three-State Outputs; Outputs Open When Off Bipolar Circuit—No Latchup ±30V Input Range Triple Driver/Receiver 30kΩ Input Impedance Meets All RS232 Specifications 16-Pin Version—Pin Compatible with MC145406 Available in SO Package U s s A bias pin allows one receiver to be kept on while the rest of the part is shut down. The LT1039A is also available in the 16-pin version, without shutdown or bias pin functions. For applications requiring operation from a single 5V supply, see the LT1180A/LT1181A and LT1130A data sheets. , LTC and LT are registered trademarks of Linear Technology Corporation. APPLICATIO S s The LT ®1039A is a triple RS232 driver/receiver that includes shutdown. Each receiver will accept up to ±30V input and can drive either TTL or CMOS logic. The RS232 drivers accept TTL logic inputs and output RS232 voltage levels. The outputs are fully protected against overload and can be shorted to ground or up to ±30V without damage to the drivers. Additionally, when the system is shut down or power is off, the outputs are in a high impedance state allowing data line sharing. On-chip ESD protection eliminates the need for external protection devices. RS232 Interface Terminals Modems U TYPICAL APPLICATIO BIAS* RS232 IN 1 V+ 2 LT1039A VCC 18 17 16 3 5V LOGIC 30k 50Ω** RS232 OUT RS232 IN 4 15 5 14 LOGIC LOGIC 30k *BIAS PIN USED 50Ω** TO KEEP THE RS232 OUT RECEIVER ON WHILE IN SHUTDOWN RS232 IN **50Ω RESISTORS MAY BE REQUIRED 50Ω** FOR IEC-1000-4-2 RS232 OUT ESD PROTECTION DEPENDING UPON – 12V PC BOARD AND CONNECTOR LEAD LENGTH 6 13 7 12 LOGIC LOGIC 30k 11 8 9 V– GND 10 Driver Output Swing ON/OFF LOGIC OUTPUT VOLTAGE REFERRED TO SUPPLIES (V) 12V V+ – 0.4 – 0.8 –1.2 –1.6 – 2.0 1.2 0.8 0.4 V– 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 OUTPUT CURRENT (mA) 1039A TA01 1039A TA02 1039afa 1

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