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SP3493 Datasheet(PDF) 3 Page - Sipex Corporation

Part No. SP3493
Description  3.3V Low Power Slew Rate Limited RS-485/RS-422 Transceivers
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Maker  SIPEX [Sipex Corporation]
Homepage  http://www.sipex.com
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SP3493 Datasheet(HTML) 3 Page - Sipex Corporation

 
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3
10/16/02
SP3493/3494 +3.3V Low Power Slew-Rate Limited RS-485/RS-422 Transceivers
© Copyright 2002 Sipex Corporation
SPECIFICATIONS (continued)
T
AMB = TMIN to TMAX and VCC = 3.3V ± 5% unless otherwise noted.
PARAMETERS
MIN.
TYP.
MAX.
UNITS
CONDITIONS
SP3493 RECEIVER
AC Characteristics
Maximum Data Rate
250
kbps
Receiver Input to Output, t
PLH
35
70
120
ns
Figures 6 and 11
Receiver Input to Output, t
PHL
35
70
120
ns
Figures 6 and 11
Differential Receiver Skew
10
ns
Figures 6 and 11
SP3493 POWER REQUIREMENTS
Supply Current
1000
2000
µAD = 0 or V
CC
SP3494 DRIVER
DC Characteristics
Differential Output Voltage
GND
V
CC
Volts
Unloaded; R = ∞; Figure 1
Differential Output Voltage
2
V
CC
Volts
with load; R = 50Ω; (RS-422); Figure 1
Differential Output Voltage
1.5
V
CC
Volts
with load; R = 27Ω; (RS-485); Figure 1
Change in Magnitude of Driver
Differential Output Voltage for
Complimentary States
0.2
Volts
R = 27Ω or R = 50Ω; Figure 1
Driver Common-Mode
Output Voltage
3
Volts
R = 27Ω or R = 50Ω; 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
+10
µA
Applies to DE, DI, RE
Driver Short-Circuit Current
V
OUT = HIGH
+250
mA
-7V < V
O < +12V
V
OUT = LOW
+250
mA
-7V < V
O < +12V
SP3494 DRIVER
AC Characteristics
Maximum Data Rate
2.5
Mbps
RE = V
CC, DE = VCC
Driver Input to Output, t
PLH
20
45
75
ns
Figures 2 and 8
Driver Input to Output, t
PHL
20
45
75
ns
Figures 2 and 8
Differential Driver Skew
10
ns
t
DO1 - tDO2 , Figures 2 and 9
Driver Rise or Fall Time
30
70
ns
From 10% to 90%,
Figures 3 and
9
Driver Enable to Output High
52
120
ns
Figures 4 and 10
Driver Enable to Output Low
60
120
ns
Figures 5 and 10
Driver Disable Time from Low
40
120
ns
Figures 5 and 10
Driver Disable Time from High
60
120
ns
Figures 4 and 10
SP3494 RECEIVER
DC Characteristics
Differential Input Threshold
-0.2
+0.2
Volts
-7V < V
CM < +12V
Input Hysteresis
20
mV
V
CM = 0V
Output Voltage High
V
CC-0.4
Volts
V
ID = +200mV, -1.5mA
Output Voltage Low
0.4
Volts
V
ID = -200mV, 2.5mA
Three-State (High Impedance)
Output Current
+1
µA
0V < V
O < VCC; RE = VCC
Input Resistance
12
15
kΩ
-7V < V
CM < +12V
Input Current (A, B); V
IN = 12V
1.0
mA
DE = 0V, V
CC = 0V or 3.6V, VIN = 12V
Input Current (A, B); V
IN = -7V
-0.8
mA
DE = 0V, V
CC = 0V or 3.6V, VIN = -7V
Short-Circuit Current
7
60
mA
0V < V
CM < VCC


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