ICS8701-01 Datasheet, PDF (8/10 Pages) Integrated Circuit Systems – LOW SKEW ÷1, ÷2 CLOCK GENERATOR W/POLARITY CONTROL

Integrated
Circuit
Systems, Inc.
ICS8701-01
LOW SKEW ¸1, ¸2 CLOCK
GENERATOR W/POLARITY CONTROL
FIGURE 3C, 3D- SKEW DEFINITIONS & WAVEFORMS
Multiple Frequency Skew - Skew across banks of outputs switching in the same direction operating at different frequencies with
the same supply voltages and equal load conditions.
CLK
QA0 - QA4,
QB0 - QB4,
QC0 - QC4,
or
QD0 - QD4
in ÷1, inverting
VDDO/2
tsk(w)
QA0 - QA4,
QB0 - QB4,
QC0 - QC4,
or
VDDO/2
QD0 - QD4
in ÷2, inverting
FIGURE 3C - MULTIPLE FREQUENCY SKEW
fin = 200MHz, Vamp = 3.3V, tr = tf = 200ps
Part to Part Skew - Skew at different outputs switching in the same direction on different devices operating at the same supply
voltages and with equal load conditions.
CLK
PART 1 QA0 - QA4
QB0 - QB4
QC0 - QC4
QD0 - QD4
inverting
PART 2 QA0 - QA4
QB0 - QB4
QC0 - QC4
QD0 - QD4
inverting
8701-01
VDDO/2
tsk(p)
VDDO/2
VDDO/2
tsk(p)
VDDO/2
FIGURE 3B - OUTPUT SKEW
fin = 200MHz, Vamp = 3.3V, tr = tf = 200ps
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REV. A - AUGUST 28, 2000