E142AHF Datasheet, PDF (18/19 Pages) Semtech Corporation – Per Pin timing Deskew w 4x2 Cross Point Switch

EDGE HIGH-PERFORMANCE PRODUCTS
AC Characteristics
Parameter
Symbol
Propagation Delays
Minimum Delay (Pulse Width >= 1.0 ns)
VDELAY = +0.1V, VFALL = +0.1V
Delay Range vs. Pulse Width
Input Pulse Width >= 1.0 ns
(+0.1V < VDELAY < -1.2V)
TPDmin
Tspan
VFALL Range of Adjustment
Input Pulse Width >= 1.0 ns
(+0.1V < VFALL < -1.2V)
Tfall
Propagation Delay Tempco (Note 1)
-1.1V <= VDELAY, VFALL <= +0.1V
Output Rise/Fall Times (20% to 80%) (Note 1) Tr, Tf
Min
1.75
1.1
170
300
Typ
2.05
1.4
300
<2
420
Edge142
Max
Units
2.45
ns
ns
ps
ps / ^oC
500
ps
Test conditions (unless otherwise specified): “Recommended Operating Conditions” with TA = 25 °C with 400
LFPM of airflow, and all outputs terminated with 50 Ω to –2.0 V. Timing reference points at the differential
crossing points for input and output signals, REXT1 = 2.94 KΩ, and REXT2 = 2.94 KΩ. All input signals are
fully differential. Values are based on nominal temperature and a supply voltage of –5.2 V.
Note 1: Based upon characterization data. Not production tested. For more complete data, refer to the
application information section of the data sheet.
The specified limits shown can be met only after thermal equilibrium has been established. Thermal equilibrium
is established by applying power for at least 2 minutes while maintaining a transverse air flow of 400 linear
feet per minute over the device mounted either in the test socket or on the printed circuit board.
 2000 Semtech Corp.
18
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