sy89838u Micrel Semiconductor, sy89838u Datasheet - Page 7

• Manufacturer Part Number: sy89838u
• Description: Precision 1 8 Lvds Clock Fanout Buffer With 2 1 Runt Pulse Eliminator Input Mux
• Manufacturer: Micrel Semiconductor

AC Electrical Characteristics
V
Notes:
6.
7.
8.
9.
10. Random jitter is measured with a K28.7 character pattern, measured at <f
11. Cycle-to-cycle jitter definition: the variation of periods between adjacent cycles, T
12. Total Jitter definition: with an ideal clock input of frequency <f
13. Crosstalk is measured at the output while applying two similar differential clock frequencies that are asynchronous with respect to each
November 2007
Symbol
f
t
t
Tempco
t
t
t
CC
MAX
pd
pd
skew
Jitter
R,
= +2.5V ±5%; T
t
High-frequency AC-parameters are guaranteed by design and characterization.
Propagation delay is a function of rise and fall time at IN. See “Typical Operating Characteristics” for more details.
Output-to-output skew is measured between two different outputs under identical transitions.
Part-to-part skew is defined for two parts with identical power supply voltages at the same temperature and with no skew of the edges at
the respective inputs.
output signal.
more than the specified peak-to-peak jitter value.
other at the inputs.
F
Parameter
Maximum Operating Frequency
Differential Propagation Delay
IN-to-Q
SEL-to-Q
SEL-to-Q
Differential Propagation Delay
Temperature Coefficient
Output-to-Output Skew
Part-to-Part Skew
Clock
Crosstalk-Induced Jitter
Output Rise/Fall Time (20% to 80%)
A
= –40°C to +85°C, RPE enabled, Input t
Cycle-to-cycle Jitter
Random Jitter
Total Jitter
(6)
RPE enabled
V
RPE enabled, see Timing Diagram
RPE disabled (V
Note 8
Note 9
Note 10
Note 11
Note 12
Note 13
Condition
At full output swing.
IN
≥ 250mV, Note 7
MAX
r
/t
, no more than one output edge in 10
7
f
≤ 600ps (20% to 80%), R
IN
MAX
= V
.
CC
/2)
n
– T
n-1
where T is the time between rising edges of the
[e-mail]
L
= 100Ω, unless otherwise stated.
Min
500
1.5
40
12
output edges will deviate by
Typ
700
115
2.0
20
80
or [phone]
M9999-112907-C
1000
Max
950
200
150
0.7
17
40
10
1
1
Cycles
Units
ps
ps
ps
fs/
GHz
ps
ps
ps
ps
ps
ps
RMS
RMS
RMS
o
PP
C