LTC1337 Datasheet | Linear Technology

LTC1337 5V Low Power RS232 3-Driver/5-Receiver Transceiver Features s s s s s s s s DESCRIPTIO s s s Low Supply Current: 300µA 1µA Supply Current in SHUTDOWN ESD Protection: Over ±10k V 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 patible with LT1137A and LT1237 Flowthrough Architecture The LTC1337 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 and can supply up to 12m A of extra current to power external circuitry. In SHUTDOWN mode, the supply current is further reduced to 1µA. All RS232 outputs assume a high impedance state in SHUTDOWN and with the power off. The LTC1337 is fully pliant with all data rate and overvoltage RS232 specifications. The transceiver can operate up to 120k baud with a 1000p F// 3kΩ load. Both driver outputs and receiver inputs can be forced to ± 25V without damage, and can survive multiple ± 10k V ESD strikes. APPLICATI s s Notebook puters Palmtop puters TYPICAL APPLICATI 3-Drivers/5-Receivers with SHUTDOWN V+ C1 0.1µF C2 0.1µF DRIVER 1 OUT RX1 IN DRIVER 2 OUT RX2 IN RX3 IN RX4 IN DRIVER 3 OUT RX5 IN ON/OFF VCC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 LTC1337 28 27 26 25 24 23 22 21 20 19 18 17 16 15 1337 TA01 C3 0.1µF DRIVER 1 IN RX1 OUT DRIVER 2 IN RX2 OUT RX3 OUT RX4 OUT DRIVER 3 IN RX5 OUT GND C4 0.1µF QUIESCENT CURRENT OPERATING (µA) V- 600 500 400 300 200 100 0 SHUTDOWN CURRENT - 20 TEST CONDITION: VCC = 5V, ALL DRIVER INPUTS TIED TO VCC 1337 TA02 Supply Current 1.2 1.0 SHUTDOWN CURRENT (µA) QUIESCENT CURRENT 0.8 0.6 0.4 0.2 0 20 40 60 TEMPERATURE (°C) LTC1337 ABSOLUTE (Note 1) AXI U RATI GS PACKAGE/ORDER I FOR...