ICS87931I Datasheet, PDF (7/14 Pages) Integrated Circuit Systems – LOW SKEW, 1-TO-6 LVCMOS/LVTTL CLOCK MULTIPLIER/ZERO DELAY BUFFER

Integrated
Circuit
Systems, Inc.
ICS87931I
LOW SKEW, 1-TO-6
LVCMOS/LVTTL CLOCK MULTIPLIER/ZERO DELAY BUFFER
PARAMETER MEASUREMENT INFORMATION
V_DDA, V_DDO = 1.65V±5%
LVCMOS
SCOPE
Qx
V_DDA
nCLK0
V
PP
CLK0
Cross Points
V
CMR
GND = -1.165V±5%
3.3V OUTPUT LOAD AC TEST CIRCUIT
GND
DIFFERENTIAL INPUT LEVEL
V
DDO
Qx
2
V
DDO
Qy
2
t sk(o)
OUTPUT SKEW
QAx,
QBx,
QCx
V
DDO
2
tcycle n
V
DDO
2
➤
tcycle n+1
V
DDO
2
➤
t jit(cc) = tcycle n –tcycle n+1
1000 Cycles
CYCLE-TO-CYCLE JITTER
2V
2V
0.8V
Clock Outputs
t
t
R
F
OUTPUT RISE/FALL TIME
QAx, QBx, QCx
V
DDO
2
Pulse Width
t
PERIOD
0.8V
CLK1
nCLK0
CLK0
EXT_FB
V_DD
2
V_DDO
2
odc & t_PERIOD
87931BYI
odc = ^{t PW}
t _PERIOD
PROPAGATION DELAY
www.icst.com/products/hiperclocks.html
7
REV. A JUNE 23, 2003