74AUP1G17 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet Rev. 9 — 4 November 2016 13 of 25
NXP Semiconductors
74AUP1G17
Low-power Schmitt trigger
15. Application information
The slow input rise and fall times cause additional power dissipation, this can be
calculated using the following formula:
P
ad
=f
i
(t
r
I
CC(AV)
+t
f
I
CC(AV)
) V
CC
where:
P
ad
= additional power dissipation (W);
f
i
= input frequency (MHz);
t
r
= input rise time (ns); 10 % to 90 %;
t
f
= input fall time (ns); 90 % to 10 %;
I
CC(AV)
= average additional supply current (A).
Average I
CC
differs with positive or negative input transitions, as shown in Figure 14.
Fig 13. Typical transfer characteristics; V
CC
= 3.0 V
DDG
9
,
9
,
&&
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