NXP Semiconductors
74HC132; 74HCT132
Quad 2-input NAND Schmitt trigger
,
&&
DDD
,
&&
DDD
9
,1
9
,1
a. V
CC
= 4.5 V
Fig 10. Typical 74HCT132 transfer characteristics
b. V
CC
= 5.5 V
15. Application information
The slow input rise and fall times cause additional power dissipation, this can be
calculated using the following formula:
P
add
= f
i
(t
r
I
CC(AV)
+ t
f
I
CC(AV)
)
V
CC
where:
P
add
= additional power dissipation (W);
f
i
= input frequency (MHz);
t
r
= rise time (ns); 10 % to 90 %;
t
f
= fall time (ns); 90 % to 10 %;
I
CC(AV)
= average additional supply current (A).
Average
I
CC(AV)
differs with positive or negative input transitions, as shown in
and
An example of a relaxation circuit using the 74HC132; 74HCT132 is shown in
74HC_HCT132
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© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 3 — 30 August 2012
10 of 20
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