• Product introduction

LTC1338CSW

5V low power RS232 5-Driver/3-Receiver transceiver

peculiarity

• Low supply current: 500μA
• The 0.2μA supply is powered off at shutdown current
• 50μA of supply current is in receive ALIVE mode
• Over ± 10kV ESD protection
• Available from a single 5V supply
• Use a small capacitor: 0.1μF
• Works to 120K baud rate
• When turned off, the three-state output is high impedance
• Output overvoltage does not force current
• RS232 I/O line can force ± 25V without damage
• Flow through the architecture

description

The LTC1338 is a 5-driver/3-receiver RS232 transceiver with very low supply current. Under no-load conditions, the supply current is only 500μA. The charge pump requires only four 0.1μF capacitors.

In shutdown mode, the supply current is further reduced to 0.2μA. In receive ALIVE mode, all three receivers remain alive and supply current 50μA. All RS232 outputs assume a high impedance state during shutdown and power down.

The LTC1338 is fully compatible with all data rates and overvoltage RS-232 specifications. The transceiver can operate a 2500pF with a 3kohms load of up to 120K baud. Two driver outputs and receiver inputs are forced up to 25V without damage and can survive up to ± 10kV ESD shocks.