LT1180AIN Datasheet

Interface - Drivers, Receivers, Transceivers


The LT® 1180A/ LT1180AIN are dual RS232 driver/receiver pairs with integral charge pump to generate RS232 voltage levels from a single 5V supply. These circuits feature rugged bipolar design to provide operating fault tolerance and ESD protection unmatched by competing CMOS designs. Using only 0.1µF external capacitors, these circuits consume only 40mW of power, and can operate to 120k baud even while driving heavy capacitive loads. New ESD structures on the chip allow the LT1180A/LT1180AIN to survive multiple ±10kV strikes, eliminating the need for costly TransZorbs® on the RS232 line pins. The LT1180A/ LT1180AIN are fully compliant with EIA RS232 standards. Driver outputs are protected from overload, and can be shorted to ground or up to ±30V without damage. During shutdown or power-off conditions, driver and receiver outputs are in a high impedance state, allowing line sharing. The LT1180AIN is available in 16-pin DIP and SO packages. The LT1180AIN is supplied in 18-pin DIP and SO packages for applications which require shutdown. LT1180AIN Features • Outputs Withstand ±30V Without Damage• CMOS Comparable Low Power: 40mW• Operates from a Single 5V Supply• Rugged Bipolar Design• Outputs Assume a High Impedance State When Off or Powered Down• Meets All RS232 Specifications• Available With or Without Shutdown• Absolutely No Latch-up• Available in SO Package LT1180AIN Applications • Portable Computers• Battery-Powered Systems• Power Supply Generator• Terminals• Modems


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