ICS87974I Datasheet, PDF (8/16 Pages) Integrated Device Technology – Fully integrated PLL

ICS87974I
LOW SKEW, 1-TO-15,
LVCMOS/LVTTL CLOCK GENERATOR
PARAMETER MEASUREMENT INFORMATION
1.65V±5%
V_DD,
V_DDA, V_DDOx
LVCMOS
GND
-1.65V±5%
SCOPE
Qx
V
DDOX
Qx
2
V
DDOX
Qy
2
t sk(o)
3.3V OUTPUT LOAD AC TEST CIRCUIT
OUTPUT SKEW
QAx,
QBx,
QCx,
QFB
V
DDOX
V
DDOX
V
DDOX
2V
2
2
2
tcycle n
➤
tcycle n+1
➤
0.8V
Clock
Outputs
t_R
t jit(cc) = tcycle n –tcycle n+1
1000 Cycles
2V
0.8V
t_F
CYCLE-TO-CYCLE JITTER
OUTPUT RISE/FALL TIME
QAx,
QBx,
QCx,
QFB
V_DDOX
2
t _PW
V_DDOX
2
t _PERIOD
odc = ^{t PW}
t _PERIOD
V_DDOX
2
CLK0,
CLK1
QFB
V_DD
2
V_DDOx
2
t
PD
OUTPUT PULSE WIDTH/PULSE WIDTH PERIOD
87974CYI
SYNC TO FEEDBACK PROPAGATION DELAY
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8
REV. E JULY 26, 2010