AS1156/AS1154
Data Sheet - E l e c t r i c a l C h a r a c t e r i s t i c s
Switching Characteristics
(V
CC
= +3.0 to +3.6V, R
L
= 100Ω ±1%, C
L
= 2.5pF (differential), T
A
= -40 to +85°C
Typical values are at V
CC
= +3.3V, T
A
= +25ºC, Unless Otherwise Noted.)
1, 2, 3, 10
Table 4. Switching Characteristics
Parameter
Differential Propagation Delay,
High-to-Low
Differential Propagation Delay,
Low-to-High
Differential Pulse Skew
4
Differential Channel-to-Channel Skew
5
Differential Part-to-Part Skew
6
Differential Part-to-Part Skew
7
Rise Time
Fall Time
Maximum Operating Frequency
8, 9
Notes:
1. Parameters are guaranteed by design and characterization.
2. C
L
includes probe and jig capacitance.
3. Signal generator conditions for dynamic tests: V
OL
= 0, V
OH
= 2.4V, f = 100MHz, 50% duty cycle, RO = 50
Ω
,
t
R
≤
1ns, t
F
≤
1ns (0 to 100%).
4. t
SKD1
is the magnitude difference of differential propagation delay. t
SKD1
= |t
PHLD
- t
PLHD
|.
5. t
SKD2
is the magnitude difference of t
PHLD
or t
PLHD
of one channel to the t
PHLD
or t
PLHD
of another channel on
the same device.
6. t
SKD3
is the magnitude difference of any differential propagation delays between devices at the same V
CC
and
within 5°C of each other.
7. t
SKD4
is the magnitude difference of any differential propagation delays between devices operating over the
rated supply and temperature ranges.
8. f
MAX
signal generator conditions: V
OL
= 0, V
OH
= 2.4V, 50% duty cycle, RO = 50
Ω
,
t
R
≤
1ns, t
F
≤
1ns (0 to 100%).
9. Transmitter output criteria: duty cycle = 45 to 55%, V
OD
≥
250mV.
10. For optimum performance matched circuits should be used.
Symbol
t
PHLD
t
PLHD
t
SKD1
t
SKD2
t
SKD3
t
SKD4
t
TLH
t
THL
f
MAX
Conditions
Figure 20 on page 11 and
Figure 21 on page 11
Figure 21 on page 11
Figure 21 on page 11
Figure 21 on page 11
Figure 21 on page 11
Figure 21 on page 11
Figure 21 on page 11
Figure 21 on page 11
200
200
400
356
352
Min
1.1
1.1
Typ
1.268
1.267
90
110
Max
1.5
1.5
200
250
750
900
800
800
Unit
ns
ns
ps
ps
ps
ps
ps
ps
MHz
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