SP3491EN Просмотр технического описания (PDF) - Exar Corporation
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SP3491EN Datasheet PDF : 12 Pages
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SP3490 / SP3491
Electrical Characteristics, Continued
TAMB = TMIN to TMAX and VCC = 3.3V ±5% unless otherwise noted
PARAMETERS
SP3491 Driver DC Characteristics
Differential output voltage
Differential output voltage
Differential output voltage
Change in magnitude of driver
differential output voltage for
complimentary states
Driver common-mode output voltage
MIN.
2
1.5
TYP.
MAX.
Vcc
Vcc
Vcc
0.2
3
Input high voltage
2.0
Input low voltage
0.8
Input current
Driver short circuit current
VOUT = HIGH
Driver short circuit current
VOUT = LOW
SP3491 Driver AC Characteristics
Maximum data rate
10
±10
±250
±250
Driver input to output, tPLH
Driver input to output, tPHL
20
40
60
20
40
60
Differential driver skew
2
Driver rise or fall time
5
20
Driver enable to output HIGH
52
120
Driver enable to output LOW
60
120
Driver disable from LOW
40
120
Driver disable from HIGH
60
120
UNITS
CONDITIONS
V
Unloaded; R = ∞Ω ; Figure 1
V
With load; R = 50Ω (RS-422); Figure 1
V
With load; R = 27Ω (RS-485); Figure 1
V
R = 27Ω or R = 50Ω; Figure 1
V
R = 27Ω or R = 50Ω; Figure 1
V
Applies to DE, D, REB
V
Applies to DE, D, REB
µA
Applies to DE, D, REB
mA
-7V ≤ VO ≤ 12V; Figure 8
mA
-7V ≤ VO ≤ 12V; Figure 8
Mbps
ns
ns
ns
ns
ns
ns
ns
ns
Figures 2 & 9
Figures 2 & 9
|tPHL(Y)- tPLH(Y)|, |tPHL(Z)- tPLH(Z)|,
Figures 2 and 9
From 10%-90%; Figures 3 and 10
Figures 4 and 11
Figures 5 and 11
Figures 5 and 11
Figures 4 and 11
REV 1.0.3
4/12
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