XRT91L33 Ver la hoja de datos (PDF) - Exar Corporation
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XRT91L33 Datasheet PDF : 16 Pages
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XRT91L33
STS-12/STS-3 MULTIRATE CLOCK AND DATA RECOVERY UNIT
3.4 LVPECL Differential Input and Output DC characteristics
REV. V1.0.0
TABLE 7: LVPECL DIFFERENTIAL INPUTS AND OUPUTS
SYMBOL
PARAMETER
MIN.
TYP.
MAX. UNITS
CONDITIONS
VIH
Input HIGH voltage
VDD-1.75
VDD-0.4 V
Guaranteed input
HIGH voltage
VIL
Input LOW voltage
VDD-2.0
VDD-0.7 V
Guaranteed input
LOW voltage
IIH
Input HIGH current
-0.5
10
μA
VIN DIFF =0.5V
IIL
Input LOW current
-0.5
10
μA
VIN DIFF =0.5V
VIDIFF Input PECL Differential Voltage, peak-
250
mV
to-peak swing (see Figure 4)
VOCM Output Common-Mode Voltage
0.8
1.35
1.7
V
50 Ω to (VDD-2.0V)
VODIFF Output LVPECL Differential Voltage,
800
peak-to-peak swing (see Figure 4)
1700
mV 50 Ω to (VDD-2.0V)
FIGURE 4. DIFFERENTIAL VOLTAGE SWING DEFINITIONS (INPUT OR OUTPUT) FOR CLOCK AND DATA
V(+)
V(-)
V SIN G LE
VDIFF = V(+)-V(-)
0V
2 x VSINGLE
TABLE 8: LVDS OUTPUTS
SYMBOL
PARAMETER
MIN.
TYP.
VOCM Output common-mode voltage
1.0
1.35
VODIFF Output LVDS Differential Voltage,
700
peak-to-peak Swing (see Figure 4)
MAX.
1.7
1700
UNITS
V
mV
CONDITIONS
100 Ω between
RXDOP/N and
RXCLKP/N
100 Ω between
RXDOP/N and
RXCLKP/N
10
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