E142AHF Datasheet, PDF (12/19 Pages) Semtech Corporation – Per Pin timing Deskew w 4x2 Cross Point Switch

EDGE HIGH-PERFORMANCE PRODUCTS
Application Information (continued)
Edge142
Prop Delay vs. Frequency
The 142 shows very little change in propagation delay
vs. frequency. The following three charts show the
variation in the prop delay of a rising edge and a falling
edge as the frequency is varied over a wide range.
The first chart shows the Motorola 10EL11 clock
spreader timing error for both the rising and falling edge
with the input frequency varied from .5 MHz to 300 MHz.
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.
EL11 Clock Spreader Tpd vs. Frequency
30
20
10
0
-10
-20
0.5 10 20 50 75 100 125 150 200 250 300
Frequency [MHz]
Edge142 TPD+ Error vs. Frequency
V E E = - 5 . 2 V VFALL & VMID=-0.6V
30
20
10
0
-10
-20
0.5 10 20 50 75 100 125 150 200 250 300
Frequency [MHz]
Tpd+ Error
Tpd- Error
VD=+0.1V
VD=-0.1V
VD=-0.3V
VD=-0.5V
VD=-0.7V
VD=-0.9V
VD=-1.1V
VD=-1.3V
Edge142 TPD- Error vs. Frequency
V E E = - 5 . 2 V VFALL & VMID=-0.6V
30
20
10
0
-10
-20
0.5 10 20 50 75 100 125 150 200 250 300
Frequency [MHz]
VD=+0.1V
VD=-0.1V
VD=-0.3V
VD=-0.5V
VD=-0.7V
VD=-0.9V
VD=-1.1V
VD=-1.3V
 2000 Semtech Corp.
12
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