LT1341 Datasheet | Linear Technology

LT1341 5V RS232 Transceiver with One Receiver Active in Shutdown Features s s s s s s s s s s s s DESCRIPTIO s s One Receiver Remains Active While in Shutdown ESD Protection Over ±10k V Uses Small Capacitors: 0.1µF, 0.2µF 60µA Supply Current in Shutdown Pin patible with LT1137A 120k Baud Operation for RL = 3k, CL = 2500p F 250k Baud Operation for RL = 3k, CL = 1000p F CMOS parable Low Power: 60m W Operates from a Single 5V Supply Easy PC Layout: Flowthrough Architecture Rugged Bipolar Design Outputs Assume a High Impedance State When Off or Powered Down Absolutely No Latchup Available in SSOP Package The LT®1341 is an advanced low power three-driver, fivereceiver RS232 transceiver. Included on the chip is a shutdown pin for reducing supply current to near zero. During shutdown one receiver remains active to detect ining RS232 signals, for example, to wake up a system. All other receivers and the drivers assume high impedance states during shutdown. The driver disable function provides additional control of operating mode. When driver disable is high the charge pump and drivers turn off. Receivers continue to operate during driver disable. New ESD structures on the chip allow the LT1341 to survive multiple ±10k V strikes, eliminating the need for costly Trans Zorbs® on the RS232 line pins. The LT1341 is fully pliant with all EIA RS232 specifications and operates in excess of 120kbaud even driving heavy capacitive loads. , 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+ 0.1µF 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 NC VCC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 LT1341 28 V - 27 26 25 24 23 22 21 20 19 DRIVER 1 IN RX1 OUT DRIVER 2 IN RX2 OUT RX3 OUT RX4 OUT TO LOGIC 2 × 0.1µF 0.1µF RECEIVER OUTPUT CL = 50p F DRIVER R OUTPUT RL = 3k CL =...