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EVM142AHF Datasheet(PDF) 13 Page - Semtech Corporation

Part # EVM142AHF
Description  Per Pin timing Deskew w 4x2 Cross Point Switch
PDF  19 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

EVM142AHF Datasheet(HTML) 13 Page - Semtech Corporation

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 2000 Semtech Corp.
www.semtech.com
EDGE HIGH-PERFORMANCE PRODUCTS
Edge142
Application Information (continued)
EL11 Clock Spreader Tpd vs. 1%-99% Duty Cycle
Duty Cycle [%] (Period=100 ns)
-100
-80
-60
-40
-20
0
20
40
60
80
100
0
1 02 0
3 0
4 05 06 0
7 080
9 0
1 0 0
Tpd+ Error
Tpd- Error
Edge 142 Tpd+ vs. 1%-99% Duty Cycle
Duty Cycle [%] (Period=100 ns)
-100
-80
-60
-40
-20
0
20
40
60
80
100
0
1 0
2 03 04 0
5 06 07 0
809 0 1 0 0
Tpd+ Error, +0.1V
Tpd+ Error, -0.1V
Tpd+ Error, -0.3V
Tpd+ Error, -0.7V
Tpd+ Error, -0.9V
Tpd+ Error, -1.1V
Tpd+ Error, -1.3V
REXT2=2.94K
Edge 142 Tpd- vs. 1%-99% Duty Cycle
Duty Cycle [%] (Period=100 ns)
-100
-80
-60
-40
-20
0
20
40
60
80
100
0
1 0
2 03 04 0
5 06 07 0
809 0 1 0 0
Tpd- Error, +0.1V
Tpd- Error, -0.1V
Tpd- Error, -0.3V
Tpd- Error, -0.7V
Tpd- Error, -0.9V
Tpd- Error, -1.1V
Tpd- Error, -1.3V
REXT2=2.94K
Prop Delay vs. Duty Cycle
The 142 shows very little change in propagation delay
vs. input duty cycle. The following three charts show
the variation in the prop delay of a rising edge and a
falling edge as the duty cycle is varied from 1% to 99%.
Since the input signal period is 100 ns, a 1% duty cycle
corresponds to a 1 ns positive input pulse. A 99% duty
cycle corresponds to a 1 ns negative input pulse.
The first chart shows the Motorola 10EL11 clock
spreader timing error for both the rising and falling edge.
This information is used as a reference to compare the
142 against.
The second and third charts show the 142 under identical
conditions. The data is broken out into one chart for the
rising edge and a separate chart for the falling edge. In
addition, the timing error is listed over the entire delay
range of the 142.



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