參數(shù)資料
型號: 74HCT2G17
廠商: NXP Semiconductors N.V.
英文描述: Dual non-inverting Schmitt trigger
中文描述: 雙非反相施密特觸發(fā)器
文件頁數(shù): 12/18頁
文件大?。?/td> 89K
代理商: 74HCT2G17
74HC_HCT2G17_1
NXP B.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 6 October 2006
12 of 18
NXP Semiconductors
74HC2G17; 74HCT2G17
Dual non-inverting Schmitt trigger
16. 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 (
μ
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 (
μ
A).
I
CC(AV)
differs with positive or negative input transitions, as shown in
Figure 11
and
Figure 12
.
a. V
CC
= 4.5 V.
Fig 10. Typical 74HCT2G17 transfer characteristics
b. V
CC
= 5.5 V.
mna031
0
5.0
2.0
0
1.0
I
CC
(mA)
2.5
V
I
(V)
mna032
0
3.0
2.0
1.0
0
3.0
6.0
I
CC
(mA)
V
I
(V)
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