LTC1324 Datasheet | Linear Technology

OBSOLETE: FOR INFORMATION PURPOSES ONLY Contact Linear Technology for Potential Replacement Single Supply Local Talk® Transceiver Features n Single Chip 5V Local Talk Port n Low Power: ICC = 1m A Typ n Shutdown Pin Reduces ICC to 1µA Typ n Digitally Selectable Low Slew Rate Mode for Reduced EMI Emmisions n Drivers Maintain High Impedance in Three-State or with Power Off n Thermal Shutdown Protection n Drivers Are Short-Circuit Protected APPLICATIONS n Local Talk Peripherals n Notebook and Palmtop puters n Battery-Powered Systems DESCRIPTION The LTC®1324 is a single 5V line transceiver designed to operate on Apple®Local Talk networks. The driver Features a digitally selectable low slew rate mode for reduced EMI emissions. The chip draws only 1m A quiescent current when active and 1μA in shutdown. The differential driver outputs three-state when disabled, during shutdown or when the power is off. The driver outputs will maintain high impedance even with output mon mode voltages beyond the power supply rails. Both the driver outputs and receiver inputs are protected against ESD damage to ± 10k V. The LTC1324 is available in a 16-pin SO Wide package. L, LTC, and LT are registered trademarks of Linear Technology Corporation. Apple and Local Talk are registered trademarks of Apple puter, Inc. TYPICAL APPLICATION Typical Local Talk Connection for Low EMI SLEW RATE CONTROL DATA IN TX⎯ENABLE SHUTDOWN RX⎯ENABLE DATA OUT 2 3 4 5 6 7 8 5V 16 12 11 10 9 Local Talk TRANSFORMER 120Ω 1324 TA01 DIN 5V/DIV DOUT 1V/DIV Waveform of Driver TIME (0.5μs/DIV) 1324...