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SN75276 Datasheet(PDF) 3 Page - STMicroelectronics |
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SN75276 Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 16 page SN75276 FAIL-SAFE DIFFERENTIAL BUS TRANSCEIVER SLLS212B – SEPTEMBER 1995 – REVISED APRIL 1998 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 schematics of inputs and outputs Output 85 Ω NOM TYPICAL OF RECEIVER OUTPUT TYPICAL OF A AND B I/O PORTS Driver input: R(eq) = 3 kΩ NOM Enable inputs: R(eq) = 8 kΩ NOM R(eq) = equivalent resistor R(eq) VCC EQUIVALENT OF EACH INPUT VCC Input 180 k Ω NOM Connected on B Port 1.1 k Ω NOM 3 k Ω NOM 18 k Ω NOM Connected on A Port 180 k Ω NOM A or B VCC absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC (see Note 1) 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage at any bus terminal – 10 V to 15 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Enable input voltage, VI 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous total power dissipation See Dissipation Rating Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range, Tstg –65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: All voltage values, except differential input/output bus voltage, are with respect to network ground terminal. DISSIPATION RATING TABLE PACKAGE TA ≤ 25°C POWER RATING DERATING FACTOR ABOVE TA = 25°C TA = 70°C POWER RATING TA = 105°C POWER RATING D 725 mW 5.8 mW/ °C 464 mW 261 mW P 1100 mW 8.8 mW/ °C 704 mW 396 mW |
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