ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of the device at
theseratingsoranyotherabovethoseindicatedintheoperationsections
ofthespecificationsbelowisnotimplied. Exposuretoabsolutemaximum
rating conditions for extended periods of time may affect reliability.
VCC ............................................................................................ +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 PDIP (derate11.8mW/oC above +70oC) ...................... 1000mW
8-pin NSOIC (derate 6.90mW/oC above +70oC) .................... 600mW
SPECIFICATIONS
TAMB = TMIN to TMAX and VCC = 3.3V ± 5% unless otherwise noted.
PARAMETERS
MIN.
TYP.
MAX. UNITS CONDITIONS
SP3493 DRIVER
DC Characteristics
Differential Output Voltage
Differential Output Voltage
GND
2
VCC
VCC
Volts
Volts
Unloaded; R = ∞ Ω; Figure 1
With Load; R = 50Ω; (RS-422);
Figure 1
Differential Output Voltage
Change in Magnitude of Driver
Differential Output Voltage for
Complimentary States
Driver Common-Mode
Output Voltage
Input High Voltage
Input Low Voltage
Input Current
1.5
VCC
Volts
Volts
With Load;R = 27Ω; (RS-485); Figure 1
0.2
3
R = 27Ω or R = 50Ω; Figure 1
R = 27Ω or R = 50Ω; Figure 1
Volts
Volts
Volts
µA
2.0
0.8
+10
Driver Short-Circuit Current
VOUT = HIGH
VOUT = LOW
+250
+250
mA
mA
-7V < VO < +12V
-7V < VO < +12V
SP3493 DRIVER
AC Characteristics
Maximum Data Rate
Driver Input to Output, tPLH
250
400
kbps
ns
900
900
10
1500
1500
Figures 2 and 8
Figures 2 and 8
Driver Input to Output, tPHL
Differential Driver Skew
400
ns
ns
tPHL(Y) - tPLH(Y) , tPHL(Z) - tPLH(Z) ,
Figures 2 and 8
Figures 2 and 8
Driver Rise or Fall Time
10
30
ns
From 10% to 90%; Figures 3 and 9
SP3493 RECEIVER
DC Characteristics
Differential Input Threshold
Input Hysteresis
Output Voltage High
Output Voltage Low
0.2
VCC-0.4
12
+0.2
0.4
Volts
mV
Volts
Volts
kΩ
mA
mA
mA
-7V < VCM < 12V
VCM = 0V
IO = -1.5mA, VID = +200mV
IO = +2.5mA, VID = -200mV
-7V < VCM < 12V
VIN = 12V
25
15
Input Resistance
Input Current (A, B); VIN = 12V
Input Current (A, B); VIN = -7V
Short-Circuit Current
1.0
-0.8
60
VIN = -7V
0V < VO < VCC
10/16/02
SP3493/3494 +3.3V Low Power Slew-Rate Limited RS-485/RS-422 Transceivers
© Copyright 2002 Sipex Corporation
2
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