xc7wt14 NXP Semiconductors, xc7wt14 Datasheet - Page 9
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xc7wt14
Manufacturer Part Number
xc7wt14
Description
Xc7wt14 Triple Inverting Schmitt Trigger
Manufacturer
NXP Semiconductors
Datasheet
1.XC7WT14.pdf
(18 pages)
NXP Semiconductors
14. Application information
XC7WT14
Product data sheet
Fig 13. Average additional I
Linear change of V
The slow input rise and fall times cause additional power dissipation, which can be
calculated using the following formula:
P
ΔI
For XC7WT14 used in relaxation oscillator circuit, see
Note to the application information:
1. All values given are typical unless otherwise specified.
add
P
f
t
t
ΔI
CC(AV)
I
i
r
f
between 0.1V
add
= input frequency (MHz);
= input fall time (ns); 90 % to 10 %;
= input rise time (ns); 10 % to 90 %;
CC(AV)
= f
CC
= additional power dissipation (μW);
i
differs with positive or negative input transitions, as shown in
× (t
ΔI
CC(AV)
(μA)
= average additional supply current (μA).
r
200
150
100
50
× ΔI
0
CC
0
All information provided in this document is subject to legal disclaimers.
to 0.9V
CC(AV)
CC
Rev. 1 — 19 January 2011
+ t
f
2
× ΔI
CC(AV)
) × V
positive-going
4
negative-going
edge
CC
V
edge
CC
where:
(V)
mna058
6
Figure
Triple inverting Schmitt trigger
14.
XC7WT14
Figure
© NXP B.V. 2011. All rights reserved.
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