AS1156/AS1154
Data Sheet
austriamicrosystems
Switching Characteristics
Switching Characteristics
(VCC = +3.0 to +3.6V, RL = 100Ω ±1%, CL = 2.5pF (differential), TA = -40 to +85°C
1, 2, 3, 10
Typical values are at VCC = +3.3V, TA = +25ºC, Unless Otherwise Noted.)
Table 4. Switching Characteristics
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Differential Propagation Delay,
High-to-Low
Figure 20 on page 11 and
Figure 21 on page 11
tPHLD
1.1
1.268
1.5
ns
Differential Propagation Delay,
Low-to-High
Figure 20 on page 11 and
Figure 21 on page 11
tPLHD
tSKD1
tSKD2
tSKD3
tSKD4
tTLH
1.1
1.267
90
1.5
200
250
750
900
800
800
ns
ps
ps
ps
ps
ps
Figure 20 on page 11 and
Figure 21 on page 11
Differential Pulse Skew 4
Differential Channel-to-Channel Skew 5
Differential Part-to-Part Skew 6
Differential Part-to-Part Skew 7
Rise Time
Figure 20 on page 11 and
Figure 21 on page 11
110
Figure 20 on page 11 and
Figure 21 on page 11
Figure 20 on page 11 and
Figure 21 on page 11
Figure 20 on page 11 and
Figure 21 on page 11
200
356
352
Figure 20 on page 11 and
Figure 21 on page 11
Fall Time
tTHL
200
400
ps
Maximum Operating Frequency 8, 9
fMAX
MHz
Notes:
1. Parameters are guaranteed by design and characterization.
2. CL includes probe and jig capacitance.
3. Signal generator conditions for dynamic tests: VOL = 0, VOH = 2.4V, f = 100MHz, 50% duty cycle, RO = 50Ω,
tR ≤ 1ns, tF ≤ 1ns (0 to 100%).
4. tSKD1 is the magnitude difference of differential propagation delay. tSKD1 = |tPHLD - tPLHD|.
5. tSKD2 is the magnitude difference of tPHLD or tPLHD of one channel to the tPHLD or tPLHD of another channel on
the same device.
6. tSKD3 is the magnitude difference of any differential propagation delays between devices at the same VCC and
within 5°C of each other.
7. tSKD4 is the magnitude difference of any differential propagation delays between devices operating over the
rated supply and temperature ranges.
8. fMAX signal generator conditions: VOL = 0, VOH = 2.4V, 50% duty cycle, RO = 50Ω,
tR ≤ 1ns, tF ≤ 1ns (0 to 100%).
9. Transmitter output criteria: duty cycle = 45 to 55%, VOD ≥ 250mV.
10. For optimum performance matched circuits should be used.
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