SP3494CN データシートの表示（PDF） - Signal Processing Technologies
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SP3494CN Datasheet PDF : 11 Pages
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SPECIFICATIONS (continued)
TAMB = TMIN to TMAX and VCC = 3.3V ± 5% unless otherwise noted.
PARAMETERS
MIN. TYP.
SP3493 RECEIVER
AC Characteristics
Maximum Data Rate
250
Receiver Input to Output, tPLH 35
70
Receiver Input to Output, tPHL 35
70
Differential Receiver Skew
10
SP3493 POWER REQUIREMENTS
Supply Current
SP3494 DRIVER
DC Characteristics
Differential Output Voltage
Differential Output Voltage
GND
2
1000
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
VOUT = HIGH
VOUT = LOW
SP3494 DRIVER
AC Characteristics
Maximum Data Rate
2.5
Driver Input to Output, tPLH
20
45
Driver Input to Output, tPHL
20
45
Differential Driver Skew
10
Driver Rise or Fall Time
30
Driver Enable to Output High
52
Driver Enable to Output Low
60
Driver Disable Time from Low
40
Driver Disable Time from High
60
SP3494 RECEIVER
DC Characteristics
Differential Input Threshold -0.2
Input Hysteresis
20
Output Voltage High
Output Voltage Low
VCC-0.4
Three-State (High Impedance)
Output Current
Input Resistance
12
15
Input Current (A, B); VIN = 12V
Input Current (A, B); VIN = -7V
Short-Circuit Current
7
MAX. UNITS CONDITIONS
kbps
120
ns Figures 6 and 11
120
ns Figures 6 and 11
ns Figures 6 and 11
2000 µA D = 0 or VCC
VCC Volts Unloaded; R = ∞; Figure 1
VCC Volts with load; R = 50Ω; (RS-422); Figure 1
VCC Volts with load; R = 27Ω; (RS-485); Figure 1
0.2
3
0.8
+10
+250
+250
Volts
Volts
Volts
Volts
µA
mA
mA
R = 27Ω or R = 50Ω; Figure 1
R = 27Ω or R = 50Ω; Figure 1
Applies to DE, DI, RE
Applies to DE, DI, RE
Applies to DE, DI, RE
-7V < VO < +12V
-7V < VO < +12V
Mbps RE = VCC, DE = VCC
75
ns Figures 2 and 8
75
ns Figures 2 and 8
ns
tDO1 - tDO2 , Figures 2 and 9
70
ns From 10% to 90%, Figures 3 and 9
120
ns Figures 4 and 10
120
ns Figures 5 and 10
120
ns Figures 5 and 10
120
ns Figures 4 and 10
+0.2
0.4
+1
1.0
-0.8
60
Volts
mV
Volts
Volts
µA
kΩ
mA
mA
mA
-7V < VCM < +12V
VCM = 0V
VID = +200mV, -1.5mA
VID = -200mV, 2.5mA
0V < VO < VCC; RE = VCC
-7V < VCM < +12V
DE = 0V, VCC = 0V or 3.6V, VIN = 12V
DE = 0V, VCC = 0V or 3.6V, VIN = -7V
0V < VCM < VCC
10/16/02
SP3493/3494 +3.3V Low Power Slew-Rate Limited RS-485/RS-422 Transceivers
3
© Copyright 2002 Sipex Corporation
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