Product Summary

The LT1280AISW#TR is a dual RS232 driver/receiver pair with integral charge pump to generate RS232 voltage levels from a single 5V supply. The LT1280AISW#TR feature rugged bipolar design to provide operating fault tolerance and ESD protection unmatched by competing CMOS designs. Using only 0.1mF external capacitors, these circuits consume only 40mW of power, and can operate to 120kbaud even while driving heavy capacitive loads. New ESD structures on the chip allow the LT1280AISW#TR to survive multiple ±10kV strikes, eliminating the need for costly TransZorbs on the RS232 line pins. The LT1280AISW#TR is 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.

Parametrics

LT1280AISW#TR absolute maximum ratings: (1)Supply Voltage (VCC): 6V; (2)V+ : 13.2V; (3)V-: -13.2V; (4)Input Voltage Driver : V- to V+; (5)Input Voltage Receiver : -30V to 30V; (6)Input Voltage ON/OFF : -0.3V to 12V.

Features

LT1280AISW#TR features: (1)Outputs Withstand ±30V Without Damage; (2)CMOS Comparable Low Power: 40mW; (3)Operates from a Single 5V Supply; (4)Rugged Bipolar Design; (5)Outputs Assume a High Impedance State When Off or Powered Down; (6)Meets All RS232 Specifications; (7)Available With or Without Shutdown; (8)Absolutely No Latch up; (9)Available in SO Package.

Diagrams

 LT1280AISW#TR pin connection

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