SPECIFICATIONS (continued)
TAMB = TMIN to TMAX and VCC = 3.3V ± 5% unless otherwise noted.
PARAMETERS
MIN.
TYP.
MAX. UNITS CONDITIONS
SP3493 RECEIVER
AC Characteristics
Maximum Data Rate
Receiver Input to Output, tPLH
250
35
kbps
70
70
10
120
120
ns
ns
ns
Figures 6 and 11
Figures 6 and 11
Figures 6 and 11
Receiver Input to Output, tPHL
Differential Receiver Skew
35
SP3493 POWER REQUIREMENTS
Supply Current
1000
2000
µA
D = 0 or VCC
SP3494 DRIVER
DC Characteristics
Differential Output Voltage
Differential Output Voltage
GND
2
VCC
VCC
Volts
Volts
Unloaded; R = ∞; 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
R = 27Ω or R = 50Ω; Figure 1
0.2
3
Volts
Volts
Volts
µA
R = 27Ω or R = 50Ω; Figure 1
Applies to DE, DI, RE
Applies to DE, DI, RE
Applies to DE, DI, RE
2.0
0.8
+10
Driver Short-Circuit Current
VOUT = HIGH
VOUT = LOW
+250
+250
mA
mA
-7V < VO < +12V
-7V < VO < +12V
SP3494 DRIVER
AC Characteristics
Maximum Data Rate
2.5
20
20
Mbps
ns
RE = VCC, DE = VCC
Figures 2 and 8
Driver Input to Output, tPLH
Driver Input to Output, tPHL
45
45
75
75
ns
Figures 2 and 8
Differential Driver Skew
Driver Rise or Fall Time
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
10
30
52
60
40
60
ns
ns
ns
ns
ns
ns
tDO1 - tDO2 , Figures 2 and 9
From 10% to 90%, Figures 3 and
Figures 4 and 10
Figures 5 and 10
Figures 5 and 10
70
9
120
120
120
120
Figures 4 and 10
SP3494 RECEIVER
DC Characteristics
Differential Input Threshold
Input Hysteresis
Output Voltage High
Output Voltage Low
Three-State (High Impedance)
Output Current
Input Resistance
Input Current (A, B); VIN = 12V
Input Current (A, B); VIN = -7V
Short-Circuit Current
-0.2
+0.2
Volts
mV
Volts
Volts
-7V < VCM < +12V
VCM = 0V
VID = +200mV, -1.5mA
VID = -200mV, 2.5mA
20
15
VCC-0.4
0.4
+1
µA
kΩ
mA
mA
mA
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
12
7
1.0
-0.8
60
10/16/02
SP3493/3494 +3.3V Low Power Slew-Rate Limited RS-485/RS-422 Transceivers
© Copyright 2002 Sipex Corporation
3
SIPEX [ SIPEX CORPORATION ]
