85102 DATA SHEET
TABLE 5. AC CHARACTERISTICS, V = 3.3V 10ꢀ, TA = -40°C TO 85°C
DD
Symbol Parameter
Test Conditions
Minimum Typical Maximum Units
CLK_SEL = 0
CLK_SEL = 1
CLK_SEL = 0
CLK_SEL = 1
500
250
3.2
2.8
65
MHz
MHz
ns
f
t
Output Frequency
OUT
PD
2.0
2.0
Propagation Delay; NOTE 1
ns
tsk(o)
Output Skew; NOTE 2, 4
ps
tsk(pp)
Part-to-Part Skew; NOTE 3, 4
600
ps
100MHz (12kHz - 20MHz)
250MHz (12kHz - 20MHz)
0.22
0.14
ps
Buffer Additive Phase Jitter, RMS;
refer to Additive Phase Jitter Section
tjit
ps
Absolute Maximum Output Voltage; NOTE
5, 10
V
1150
100
mV
mV
MAX
Absolute Minimum Output Voltage;
NOTE 5, 11
V
-300
MIN
V
Ringback Voltage; NOTE 6, 13
-100
500
250
mV
ps
RB
t
Time before V is allowed; NOTE 6, 13
STABLE
RB
V
Absolute Crossing Voltage; NOTE 5, 8, 9
550
140
mV
CROSS
Total Variation of V
NOTE 5, 8, 12
over all edges;
CROSS
DV
mV
CROSS
Measured between
-150mV to +150mV
Rise/Fall Edge Rate; NOTE 6, 7
0.6
45
5.5
55
V/ns
ꢀ
odc
Output Duty Cycle; NOTE 14
NOTE: Electrical parameters are guaranteed over the specified ambient operating temperature range, which is established when the
device is mounted in a test socket with maintained transverse airflow greater than 500 lfpm. The device will meet specifications after
thermal equilibrium has been reached under these conditions.
NOTE: All parameters measured at ƒout £ 250MHz unless noted otherwise.
NOTE 1: Measured from the V /2 of the input to the differential output crossing point.
DD
NOTE 2: Defined as skew between outputs at the same supply voltage and with equal load conditions. Measured at the output differ-
ential cross points.
NOTE 3: Defined as skew between outputs on different devices operating at the same supply voltage, same temperature, and with
equal load conditions. Using the same type of inputs on each device, the outputs are measured at the differential cross points.
NOTE 4: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 5: Measurement taken from single-ended waveform.
NOTE 6: Measurement taken from differential waveform.
NOTE 7: Measured from -150mV to +150mV on the differential waveform (derived from Qx minus nQx). The signal must be monotonic
through the measurement region for rise and fall time. The 300mV measurement window is centered on the differential zero crossing.
See Parameter Measurement Information Section.
NOTE 8: Measured at crossing point where the instantaneous voltage value of the rising edge of Qx equals the falling edge of nQx.
See Parameter Measurement Information Section.
NOTE 9: Refers to the total variation from the lowest crossing point to the highest, regardless of which edge is crossing. Refers to all
crossing points for this measurement. See Parameter Measurement Information Section.
NOTE 10: Defined as the maximum instantaneous voltage including overshoot. See Parameter Measurement Information Section.
NOTE 11: Defined as the minimum instantaneous voltage including undershoot. See Parameter Measurement Information Section.
NOTE 12: Defined as the total variation of all crossing voltage of Rising Qx and Falling nQx. This is the maximum allowed variance in
the V
for any particular system. See Parameter Measurement Information Section.
CROSS
NOTE: 13. T
is the time the differential clock must maintain a minimum 150mV differential voltage after rising/falling edges before
it is allowed StoTABLdEroop back into the V 100mV differential range. See Parameter Measurement Information Section.
RB
NOTE 14: Input duty cycle must be 50ꢀ.
REVISION B 12/19/14
5
Low Skew, 1-to-2, Differential/LVCMOS-to-0.7V HCSL
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