SP3490 Datasheet, PDF (2/11 Pages) Sipex 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
Drivers ............................................................... -0.3V to +6.0V
Receivers ......................................................................... ±14V
Output Voltages
Drivers .............................................................................. ±14V
Receivers .......................................................... -0.3V to +6.0V
Storage Temperature ................................................... -65˚C to +150˚
Power Dissipation per Package
8-pin NSOIC (derate 6.90mW/^oC above +70^oC) ..................... 600mW
8-pin PDIP (derate 11.8mW/^oC above +70^oC) ...................... 1000mW
14-pin NSOIC (derate 8.33mW/^oC above +70^oC) ................... 700mW
14-pin PDIP (derate 14.3mW/^oC above +70^oC) .................... 1200mW
SPECIFICATIONS
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
Differential Output Voltage
GND
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
V_OUT = LOW
SP3490 DRIVER
AC Characteristics
Maximum Data Rate
10
Driver Input to Output, t_PLH
20
40
Driver Input to Output, t_PHL
20
40
Differential Driver Skew
2
Driver Rise or Fall Time
5
SP3490 RECEIVER
DC Characteristics
Differential Input Threshold
0.2
Input Hysteresis
25
Output Voltage High
Output Voltage Low
V_CC-0.4
Input Resistance
12
15
Input Current (A, B); V_IN = 12V
Input Current (A, B); V_IN = -7V
Short-Circuit Current
MAX. UNITS CONDITIONS
V_CC Volts
V_CC Volts
V_CC Volts
Unloaded; R = ∞ Ω; Figure 1
With Load; R = 50Ω; (RS-422);
Figure 1
With Load; R = 27Ω; (RS-485); Figure 1
0.2 Volts
3 Volts
Volts
0.8 Volts
+10 µA
+250 mA
+250 mA
R = 27Ω or R = 50Ω; Figure 1
R = 27Ω or R = 50Ω; Figure 1
-7V < V_O < +12V
-7V < V_O < +12V
Mbps
60
ns
R=27Ω, Figures 2 and 8
60
ns
R=27Ω, Figures 2 and 8
ns
t_PHL(Y) - t_PLH(Y) , t_PHL(Z) - t_PLH(Z) ,
Figures 2 and 8
20
ns
From 10% to 90%; Figures 3 and 9
+0.2
0.4
1.0
-0.8
60
Volts
mV
Volts
Volts
kΩ
mA
mA
mA
-7V < V_CM < 12V
V_CM = 0V
I_O = -1.5mA, V_ID = +200mV
I_O = +2.5mA, V_ID = -200mV
-7V < V_CM ≤ 12V
V_IN = 12V
V_IN = -7V
0V < V_O < V_CC
Rev. 10/11/02
SP3490/3491 Low Power Full-Duplex RS485 Transceivers
2
© Copyright 2002 Sipex Corporation