IDT / ICS 3.3V, 2.5V LVPECL CLOCK GENERATOR
4
ICS843251BGI-12 REV. A NOVEMBER 19, 2012
ICS843251I-12
FEMTOCLOCK
CRYSTAL-TO-3.3V, 2.5V LVPECL CLOCK GENERATOR
TABLE 4. CRYSTAL CHARACTERISTICS
TABLE 5A. AC CHARACTERISTICS, V
CC = 3.3V±5%, VEE = 0V, T
A
= -40°C TO 85°C
TABLE 5B. AC CHARACTERISTICS, V
CC = 2.5V±5%, VEE = 0V, T
A
= -40°C TO 85°C
TABLE 3D. LVPECL DC CHARACTERISTICS, V
CC = 3.3V±5%, VEE = 0V, T
A
= -40°C TO 85°C
l
o
b
m
y
Sr
e
t
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m
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r
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Ps
n
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t
i
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U
V
H
O
1
E
T
O
N
;
e
g
a
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V
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g
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H
t
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t
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OV
C
4
.
1
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C
9
.
0
-V
V
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1
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T
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N
;
e
g
a
t
l
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t
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OV
C
0
.
2
-V
C
7
.
1
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V
G
N
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.
00
.
1V
0
5
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t
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t
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m
r
e
t
s
t
u
p
t
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O
:
1
E
T
O
N
Ω
V
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C
.
V
2
-
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2
.
3
20
3z
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S
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=
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2
1
3z
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=
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(
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;
)
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:
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@
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5
.
2
1
3
z
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0
2
-
z
H
M
5
7
8
.
1
8
3
.
0s
p
t
R
t
/
F
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T
ll
a
F
/
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s
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R
t
u
p
t
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O%
0
8
o
t
%
0
20
0
10
0
6s
p
c
d
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C
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5
45
5%
.
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P
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h
t
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f
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R
:
1
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T
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N
TABLE 3E. LVPECL DC CHARACTERISTICS, V
CC = 2.5V±5%, VEE = 0V, T
A
= -40°C TO 85°C
l
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;
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C
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.
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.
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1
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N
;
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Ω
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2
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0
=
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.
2
1
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1
=
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)
(
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;
)
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:
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1
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3
.
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p
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%
0
20
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6s
p
c
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C
y
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7
43
5%
.
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P
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h
t
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t
r
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f
e
R
:
1
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T
O
N
NOTE: It is not recommended to overdrive the crystal input with an external clock.