SN75276 Datasheet, PDF (3/16 Pages) STMicroelectronics – FAIL-SAFE DIFFERENTIAL BUS TRANSCEIVER

SN75276
FAIL-SAFE DIFFERENTIAL BUS TRANSCEIVER
schematics of inputs and outputs
SLLS212B – SEPTEMBER 1995 – REVISED APRIL 1998
EQUIVALENT OF EACH INPUT
VCC
R(eq)
Input
TYPICAL OF A AND B I/O PORTS
VCC
180 kΩ
NOM
Connected
on A Port
A or B
18 kΩ
NOM
3 kΩ
NOM
TYPICAL OF RECEIVER OUTPUT
VCC
85 Ω
NOM
Output
Driver input: R(eq) = 3 kΩ NOM
Enable inputs: R(eq) = 8 kΩ NOM
R(eq) = equivalent resistor
180 kΩ
NOM
Connected
on B Port
1.1 kΩ
NOM
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)^†
Supply voltage, V_CC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Voltage at any bus terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 10 V to 15 V
Enable input voltage, V_I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 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.
PACKAGE
D
P
DISSIPATION RATING TABLE
TA ≤ 25°C
POWER RATING
725 mW
DERATING FACTOR
ABOVE TA = 25°C
5.8 mW/°C
TA = 70°C
POWER RATING
464 mW
1100 mW
8.8 mW/°C
704 mW
TA = 105°C
POWER RATING
261 mW
396 mW
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