LT1330 Datasheet | Linear Technology

LT1330 5V RS232 Transceiver with 3V Logic Interface and One Receiver Active in Shutdown Features s s s s DESCRIPTIO s s s s s s s s s s 3V Logic Interface ESD Protection over ±10k V Uses Small Capacitors: 0.1µF, 0.2µF, 1.0µF One Low Power Receiver Remains Active While in Shutdown Pin patible with LT1137A and LT1237 120k Baud Operation for RL = 3k, CL = 2500p F 250k Baud Operation for RL = 3k, CL = 1000p F CMOS parable Low Power: 30m W Easy PC Layout- Flowthrough Architecture Rugged Bipolar Design Outputs Assume a High Impedance State When Off or Powered Down Absolutely No Latchup 60µA Supply Current in Shutdown Available in SO and SSOP Packages The LT®1330 is a three driver, five receiver RS232 transceiver with low supply current. Designed to interface with new 3V logic, the LT1330 operates with both a 5V power supply and a 3V logic power supply. The chip may be shut down to micropower operation with one receiver remaining active to monitor RS232 inputs such as ring detect from a modem. The LT1330 is fully pliant with all EIA RS232 specifications. Additionally, the RS232 line input and output pins are resilient to multiple ±10k V ESD strikes. This eliminates the need for costly Trans Zorbs® on line pins for the RS232 part. The LT1330 operates to 120kbaud even driving high capacitive loads. During shutdown, driver and receiver outputs are at a high impedance state allowing devices to be paralleled. , LTC and LT are registered trademarks of Linear Technology Corporation. Trans Zorb is a registered trademark of General Instruments, GSI APPLICATI s s Notebook puters Palmtop puters TYPICAL APPLICATI V+ 1.0µF 2 × 0.1µF DRIVER 1 OUT RX1 IN DRIVER 2 OUT TO LINE RX2 IN RX3 IN RX4 IN DRIVER 3 OUT RX5 IN (LOW-Q) ON/OFF 3V VL 5V VCC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 LT1330 28 27 26 25 24 23 22 21 20 19 18 17 16 15 V- 2 × 0.1µF DRIVER 1 IN RX1 OUT DRIVER 2 IN RX2 OUT RX3 OUT RX4 OUT DRIVER 3 IN RX5 OUT (LOW-Q) GND DRIVER DISABLE INPUT RING DETECT IN...