85104I Data Sheet
©2016 Integrated Device Technology, Inc Revision A January 20, 20165
TABLE 5. AC CHARACTERISTICS, V
DD
= 3.3V±10%, TA = -40°C TO 85°C
Symbol Parameter Test Conditions Minimum Typical Maximum Units
f
OUT
Output Frequency
CLK_SEL = 0 500 MHz
CLK_SEL = 1 250 MHz
t
PD
Propagation Delay; NOTE 1
CLK_SEL = 0 2.0 3.2 ns
CLK_SEL = 1 2.0 2.8 ns
tsk(o) Output Skew; NOTE 2, 4 100 ps
tsk(pp) Part-to-Part Skew; NOTE 3, 4 600 ps
tjit
Buffer Additive Phase Jitter, RMS;
refer to Additive Phase Jitter Section
100MHz, (12kHz - 20MHz) 0.22 ps
V
MAX
Absolute Maximum Output Voltage; NOTE
5, 10
1150 mV
V
MIN
Absolute Minimum Output Voltage;
NOTE 5, 11
-300 mV
V
RB
Ringback Voltage; NOTE 6, 13 -100 100 mV
t
STABLE
Time before V
RB
is allowed; NOTE 6, 13 500 ps
V
CROSS
Absolute Crossing Voltage; NOTE 5, 8, 9 250 550 mV
DV
CROSS
Total Variation of V
CROSS
over all edges;
NOTE 5, 8, 12
140 mV
Rise/Fall Edge Rate; NOTE 6, 7
Measured between
-150mV to +150mV
0.6 5.5 V/ns
odc Output Duty Cycle; NOTE 14 45 55 %
NOTE: Electrical parameters are guaranteed over the specifi ed ambient operating temperature range, which is established when the
device is mounted in a test socket with maintained transverse airfl ow greater than 500 lfpm. The device will meet specifi cations 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
DD
/2 of the input to the differential output crossing point.
NOTE 2: Defi ned as skew between outputs at the same supply voltage and with equal load conditions. Measured at the output differen-
tial cross points.
NOTE 3: Defi ned 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 defi ned 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: Defi ned as the maximum instantaneous voltage including overshoot. See Parameter Measurement Information Section.
NOTE 11: Defi ned as the minimum instantaneous voltage including undershoot. See Parameter Measurement Information Section.
NOTE 12: Defi ned as the total variation of all crossing voltage of Rising Qx and Falling nQx. This is the maximum allowed variance in
the V
CROSS
for any particular system. See Parameter Measurement Information Section.
NOTE: 13. T
STABLE
is the time the differential clock must maintain a minimum ±150mV differential voltage after rising/falling edges before
it is allowed to droop back into the V
RB
±100mV differential range. See Parameter Measurement Information Section.
NOTE 14: Input duty cycle must be 50%.
