ICS843256 Datasheet, PDF (7/13 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS843256
FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL
FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER
PARAMETER MEASUREMENT INFORMATION
2V
V_CC,
VCCA, VCCO
LVPECL
V
EE
-1.3V ± 0.165V
SCOPE
Qx
nQx
2.8V±0.04V
2V
VCC,
VCCA
VCCO
LVPECL
V_EE
-0.5V ± 0.125V
SCOPE
Qx
nQx
3.3V OUTPUT LOAD AC TEST CIRCUIT
nQx
Qx
nQy
Qy
t sk(o)
3.3V/2.5V OUTPUT LOAD AC TEST CIRCUIT
nQ0:nQ5
Q0:Q5
t _PW
t
PERIOD
odc = ^{t PW} x 100%
t _PERIOD
OUTPUT SKEW
OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
Clock
20%
Outputs
80%
t_R
80%
t_F
V_{SW I N G}
20%
OUTPUT RISE/FALL TIME
843256AM
www.icst.com/products/hiperclocks.html
7
REV. A NOVEMBER 29, 2005