特点
Low Supply Current: 300μA
Two Receivers Kept Alive in Shutdown
ESD Protection Over ±10kV
Operates from a Single 5V Supply
Uses Small Capacitors: 0.1μF
Operates to 120k Baud
Three-State Outputs Are High Impedance When Off
Output Overvoltage Does Not Force Current Back into Supplies
RS232 I/O Lines Can Be Forced to ±25V Without Damage
Pin Compatible with LT1137A and LT1237
Flowthrough Architecture
典型应用
典型应用
描述
The LTC?1349 is a 3-driver/ 5-receiver RS232 transceiver with very low supply current. In the no load condition, the supply current is only 300μA. The charge pump only requires four 0.1μF capacitors.
In Shutdown mode, two receivers are kept alive and the supply current is 35μA. All RS232 outputs assume a high impedance state in Shutdown and with the power off.
The LTC1349 is fully compliant with all data rate and overvoltage RS232 specifications. The transceiver can operate up to 120k baud with a 2500pF, 3k ohms load. Both driver outputs and receiver inputs can be forced to ?25V without damage, and can survive multiple ±10kV ESD strikes.