SCAS643H
–
SEPTEMBER 2000
–
REVISED FEBRUARY 2011
SWITCHING CHARACTERISTICS
V
DD
= 2.5 V
±
10%, C
L
= 10 pF (unless otherwise noted)
PARAMETER
t
PLH
t
PHL
t
sk(o)
t
r
t
f
(1)
(2)
Low-to-high propagation delay
High-to-low propagation delay
Output skew
(2)
Output rise slew rate
Output fall slew rate
All typical values are with respect to nominal V
DD
.
The t
sk(o)
specification is only valid for equal loading of all outputs.
TEST CONDITIONS
See
and
See
1.5
1.5
MIN
2
2
TYP
(1)
2.9
3
50
2.2
2.2
MAX
4.5
4.5
150
4
4
UNIT
ns
ps
V/ns
V/ns
SWITCHING CHARACTERISTICS
V
DD
= 3.3 V
±
10%, C
L
= 10 pF (unless otherwise noted)
PARAMETER
t
PLH
t
PHL
t
sk(o)
t
jitter
t
sk(p)
t
sk(pr)
t
sk(pp)
t
high
t
low
t
r
t
f
(1)
(2)
(3)
Low-to-high propagation delay
High-to-low propagation delay
Output skew
(2)
Additive phase jitter from input to output 1Y0
Pulse skew
Process skew
Part-to-part skew
Clock high time, see
Clock low time, see
Output rise slew rate
(3)
Output fall slew rate
(3)
66 MHz
140 MHz
66 MHz
140 MHz
V
O
= 0.4 V to 2 V
V
O
= 2 V to 0.4 V
6
3
6
3
1.5
1.5
2.7
2.7
4
4
12 kHz to 5 MHz, f
out
= 30.72 MHz
12 kHz to 20 MHz, f
out
= 125 MHz
V
IH
= V
DD
, V
IL
= 0 V
0.2
0.25
TEST CONDITIONS
See
and
MIN
1.8
1.8
TYP
(1)
2.4
2.5
50
63
56
150
0.3
0.4
MAX
3
3
100
UNIT
ns
ps
fs rms
ps
ns
ns
ns
ns
V/ns
V/ns
All typical values are with respect to nominal V
DD
.
The t
sk(o)
specification is only valid for equal loading of all outputs.
This symbol is according to PCI-X terminology.
4
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2000–2011, Texas Instruments Incorporated
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