74lvc2g14gv NXP Semiconductors, 74lvc2g14gv Datasheet - Page 10

• Manufacturer Part Number: 74lvc2g14gv
• Description: Dual Inverting Schmitt-trigger With 5 V Tolerant Input
• Manufacturer: NXP Semiconductors

NXP Semiconductors
15. Application information
74LVC2G14_4
Product data sheet
Fig 12. Average I
Fig 13. Relaxation oscillator
(1) Positive-going edge.
(2) Negative-going edge.
Linear change of V
f
=
---
T
1
--------------------- -
0.8
CC
1
as a function of V
RC
The slow input rise and fall times cause additional power dissipation, which can be
calculated using the following formula:
P
An example of a relaxation circuit using the 74LVC2G14 is shown in
I
I
add
P
f
t
t
CC(AV)
between 0.8 V to 2.0 V. All values given are typical unless otherwise specified.
i
r
f
I
add
= input frequency (MHz);
= input fall time (ns); 90 % to 10 %;
= input rise time (ns); 10 % to 90 %;
CC(AV)
= f
= additional power dissipation ( W);
i
differs with positive or negative input transitions, as shown in
I
(mA)
CC(AV)
(t
= average additional supply current ( A).
r
50
40
30
20
10
0
2
CC
I
CC(AV)
Rev. 04 — 4 September 2007
+ t
3
f
C
I
CC(AV)
R
4
Dual inverting Schmitt trigger with 5 V tolerant input
)
mna035
V
CC
5
(1)
(2)
V
where:
CC
mnb086
(V)
6
74LVC2G14
Figure
Figure
© NXP B.V. 2007. All rights reserved.
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