SP3490EN-L-TR Datasheet, PDF (2/12 Pages) Exar Corporation – +3.3V Low Power Full-Duplex RS-485 Transceivers with 10Mbps Data Rate

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.........................................+/-14V
Output Voltages
Drivers.............................................+/-14V
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)
14-pin NSOIC.................................................700mW
(derate 8.33mW/ºC above +70ºC)
T_AMB = T_MIN to T_MAX and V_CC = +3.3V +/-5% unless otherwise noted.
PARAMETERS
MIN. TYP.
SP3490 DRIVER
DC Characteristics
Differential Output Voltage
GND
Differential Output Voltage
2
MAX.
Vcc
Vcc
Differential Output Voltage
1.5
Vcc
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
V_OUT = LOW
SP3490 DRIVER
AC Characteristics
Max. Transmission Rate
10
Driver Input to Output, t_PLH
20
Driver Input to Output, t_PHL
20
Differential Driver Skew
0.2
3
0.8
+/-10
+/-250
+/-250
40
60
40
60
2
Driver Rise or Fall Time
5
20
ELECTRICAL CHARACTERISTICS
UNITS CONDITIONS
Volts
Volts
Volts
Volts
Unloaded; R = ∞Ω ; Figure 1
With Load; R = 50Ω (RS-422);
Figure 1
With Load; R = 27Ω (RS-485);
Figure 1
R = 27Ω or R = 50Ω; Figure 1
Volts R = 27Ω or R = 50Ω; Figure 1
Volts
Volts
µA
mA -7V ≤ V_O ≤ +12V; Figure 8
mA -7V ≤ V_O ≤ +12V; Figure 8
Mbps
ns
ns
ns
ns
R = 27Ω, Figures 2 & 9
R = 27Ω, Figures 2 & 9
|t_PHL(Y)- t_PLH(Y)|, |t_PHL(Z)- t_PLH(Z)|,
Figures 2 and 9
From 10%-90%; Figures 3 and 10
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com

SP3490_3491_102_102710