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LTC1324

Linear Technology
Part Number LTC1324
Manufacturer Linear Technology
Description Single Supply LocalTalk Transceiver
Published Mar 22, 2005
Detailed Description OBSOLETE: FOR INFORMATION PURPOSES ONLY Contact Linear Technology for Potential Replacement LTC1324 Single Supply Local...
Datasheet PDF File LTC1324 PDF File

LTC1324
LTC1324

Overview
OBSOLETE: FOR INFORMATION PURPOSES ONLY Contact Linear Technology for Potential Replacement LTC1324 Single Supply LocalTalk® Transceiver FEATURES n Single Chip 5V LocalTalk Port n Low Power: ICC = 1mA 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 LocalTalk Peripherals n Notebook and Palmtop Computers n Battery-Powered Systems DESCRIPTION The LTC®1324 is a single 5V line transceiver designed to operate on Apple®LocalTalk networks.
The driver features a digitally selectable low slew rate mode for reduced EMI emissions.
The chip draws only 1mA 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 common mode voltages beyond the power supply rails.
Both the driver outputs and receiver inputs are protected against ESD damage to ± 10kV.
The LTC1324 is available in a 16-pin SO Wide package.
L, LTC, and LT are registered trademarks of Linear Technology Corporation.
Apple and LocalTalk are registered trademarks of Apple Computer, Inc.
TYPICAL APPLICATION Typical LocalTalk 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 LTC1324 12 11 10 9 LocalTalk TRANSFORMER 120Ω 1324 TA01 DIN 5V/DIV DOUT 1V/DIV Waveform of Driver TIME (0.
5μs/DIV) 1324 TA02 1324fa 1 LTC1324 ABSOLUTE MAXIMUM RATINGS (Note 1) Supply Voltage (VCC) .
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7V Input Voltage (Logic Inputs).
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– 0.
3V to (VCC + 0.
3V) Input Voltage (Receiver Inputs) ±1 5V Driver Output Voltage (Forced) ±15V Driver Short-Circuit Duration .
Indefinite Operatin...


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