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Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP483E_00_02092
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 specifications
below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may
affect reliability.
V
CC.......................................................................+7V
Input Voltages
Logic.........................-0.3V to (Vcc + 0.5V)
Drivers......................-0.3V to (Vcc + 0.5V)
Receivers.........................................+/-15V
ELECTRICAL CHARACTERISTICS
T
MIN to TMAX and VCC = +5.0V +/-5% unless otherwise noted.
PARAMETERS
MIN.
TYP.
MAX.
UNITS CONDITIONS
SP483E DRIVER
DC Characteristics
Differential Output Voltage
GND
Vcc
Volts
Unloaded; R = ∞ ; See Figure 1
Differential Output Voltage
2
Vcc
Volts
With Load; R = 50 (RS-422);
See Figure 1
Differential Output Voltage
.5
Vcc
Volts
With Load; R = 27 (RS-485);
See Figure 1
Change in Magnitude of Driver
Differential Output Voltage for
Complimentary states
0.2
Volts
R = 27 or R = 50; See Figure 1
Driver Common Mode Output
Voltage
3
Volts
R = 27 or R = 50; See Figure 1
Input High Voltage
2.0
Volts
Applies to DE, DI, RE
Input Low Voltage
0.8
Volts
Applies to DE, DI, RE
Input Current, Driver Input
0
A
Applies to DI
Input Current, Control Lines
A
Applies to DE, RE
Driver Short Circuit Current
V
OUT = HIGH
+/-250
mA
-7V ≤ V
O ≤ +12V
V
OUT = LOW
+/-250
mA
-7V ≤ V
O ≤ +12V
SP483E DRIVER
AC Characteristics
Max. Transmission Rate
250
kbps
RE = 5V, DE = 5V; R
DIFF = 54,
C
L = CL2 = 00pF
Driver Input to Output, t
PLH
250
800
2000
ns
See Figures 3 & 5, R
DIFF = 54,
C
L = CL2 = 00pF
Driver Input to Output, t
PHL
250
800
2000
ns
See Figures 3 & 5, R
DIFF = 54,
C
L = CL2 = 00pF
Driver Skew
00
800
ns
See Figures 3 and 5,
t
SKEW = |tDPHL - tDPLH|
Driver Rise or Fall Time
250
2000
ns
From 0%-90%; R
DIFF = 54
C
L = CL2 = 00pF;
See Figures 3 and 6
Output Voltages
Logic.........................-0.3V to (Vcc + 0.5V)
Drivers.............................................+/-15V
Receivers..................-0.3V to (Vcc + 0.5V)
Storage Temperature.......................-65C to +150C
Power Dissipation..........................................500mW