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Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com SP486_487_100_061611
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation
of the device at these ratings or any other above those
indicated in the operation sections of the specications
below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may
affect reliability.
V
CC
........................................................................+7V
Input Voltages
Logic..........................-0.5V to (Vcc + 0.5V)
Drivers.......................-0.5V to (Vcc + 0.5V)
Driver Output Voltage.......................................+/-14V
Input Currents
Logic..............................................+/-25mA
Driver.............................................+/-25mA
Storage Temperature........................-65˚C to +150˚C
Power Dissipation
Plastic DIP......................................................375mW
(derate 7mW/ºC above +70ºC)
Small Outline..................................................375mW
(derate 7mW/ºC above +70ºC)
ELECTRICAL CHARACTERISTICS
V
CC
= +5.0V +/-5%; typicals at 25°C; T
MIN
≤
T
AMB
≤
T
MAX
unless otherwise noted.
PARAMETERS MIN. TYP. MAX. UNITS CONDITIONS
DC CHARACTERISTICS
DIGITAL INPUTS DI, EN, EN, EN
1
/EN
2
, EN
3
/EN
4
Voltage V
IL
0.8 Volts
Voltage V
IH
2.0 Volts
Input Current +/-2 µA V
IN
= 0V to V
CC
DRIVER OUTPUTS
Differential Voltage 5 Volts I
O
= 0; unloaded
Differential Voltage 2 Volts R
L
= 50Ω (RS-422); Figure 1
Differential Voltage 1.5 2 5 Volts R
L
= 27Ω (RS-485); Figure 1
Change in Output Magnitude
for Complementary Output
state
0.2 Volts R
L
= 27Ω or 50Ω; Figure 1
Common Mode Output Voltage 2.3 3 Volts R
L
= 27Ω or 50Ω; Figure 1
Change in Common Mode
Output Magnitude for
Complementary Output state
0.2 Volts R
L
= 27Ω or 50Ω; Figure 1
Driver Short Circuit Current V
OH
+/-250 mA -7V ≤ V
O
≤ +10V
Driver Short Circuit Current V
OL
+/-250 mA -7V ≤ V
O
≤ +10V
High Impedance Output
Current
+/-2 +/-200 µA V
O
= -7V to +10V
POWER REQUIREMENTS
Supply Voltage 4.75 5.25 Volts
Supply Current 0.5 10 µA No load, output enabled
Supply Current 0.1 10 µA No load, output disabled
