LTC1348CG#PBF

LTC1348 is a 3-driver/5-receiver RS232 transceiver with very low supply current. The charge pump only requires five 0.1µF capacitors. It provides full RS232 output levels when operated over a wide supply range of 3V to 5.5V. The transceiver operates in one of four modes: normal, receiver disable, receiver alive and Shutdown. In normal or receiver disable mode, ICC is only 600µA at 3.3V and 800µA at 5V in the no load condition. In shutdown mode, the supply current is further reduced to 0.2µA. In receiver alive mode, all five receivers are kept alive and the supply current is 15µA. All RS232 outputs assume a high impedance state in Shutdown or Receiver Alive mode or with the power off. The receiver outputs assume a high impedance state in receiver disable or with the power off. It is used in application such as notebook computers, palmtop computers, printers, portable instruments etc.

• ESD protection over ±10KV
• Operates to 120KBaud with 0.1µF flying capacitors
• 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
• Flowthrough architecture
• Slew rate is 8V/µs typical at (VCC = 5V, RL = 3K, CL = 51pF)
• Supply rise time is 0.2ms typical at (Shutdown to turn-on, VCC = 3V to 5.5V, C1 to C4 = 0.1µF)
• Operating temperature is 0°C to 70°C
• Package style is 28-lead plastic SSOP

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