SP3485 Datasheet, PDF (2/9 Pages) Exar Corporation – +3.3V Low Power Half-Duplex RS-485 Transceiver

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.....................................................................+6.0V
Input Voltages
Logic....................................-0.3V to +6.0V
Drivers.................................-0.3V to +6.0V
Receivers.........................................+/-15V
Output Voltages
Drivers.............................................+/-15V
Receivers............................-0.3V to +6.0V
Storage Temperature.......................-65˚C to +150˚C
Power Dissipation
8-pin NSOIC...................................................600mW
(derate 6.90mW/ºC above +70ºC)
T_AMB = T_MIN to T_MAX and V_CC = +3.3V +/-5% unless otherwise noted.
PARAMETERS
MIN. TYP.
SP3485 DRIVER
DC Characteristics
Differential Output Voltage
GND
Differential Output Voltage
2
Differential Output Voltage
1.5
Change in Magnitude of Driver
Differential Output Voltage for
Complimentary states
Driver Common Mode Output
Voltage
Input High Voltage
2.0
Input Low Voltage
Input Current
Driver Short Circuit Current
V_OUT = HIGH
Driver Short Circuit Current
V_OUT = LOW
SP3485 DRIVER
AC Characteristics
Maximum Data Rate
10
Driver Input to Output, t_PLH
17
Driver Input to Output, t_PHL
17
Differential Driver Skew
2
Driver Rise or Fall Time
5
ELECTRICAL CHARACTERISTICS
MAX. UNITS CONDITIONS
Vcc
Volts Unloaded; R = ∞Ω ; Figure 1
Vcc
Volts With Load; R = 50Ω (RS-422);
Figure 1
Vcc
Volts With Load; R = 27Ω (RS-485);
Figure 1
0.2
Volts R = 27Ω or R = 50Ω; Figure 1
3
Volts R = 27Ω or R = 50Ω; Figure 1
0.8
+/-10
+/-250
+/-250
Volts
Volts
µA
mA
Applies to DE, DI, RE
Applies to DE, DI, RE
Applies to DE, DI, RE
-7V ≤ V_O ≤ +12V; Figure 8
mA -7V ≤ V_O ≤ +12V; Figure 8
Mbps RE = V_CC, DE = V_CC
60
ns Figures 2 & 9
60
ns Figures 2 & 9
10
ns
|t_DO1- t_DO2|, Figures 2 and 10
20
ns From 10%-90%; Figures 3 and 10
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7000 • www.exar.com
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SP3485_200_051916