參數(shù)資料
型號: 74HC132
廠商: NXP Semiconductors N.V.
英文描述: Quad 2-input NAND Schmitt trigger
中文描述: 四2輸入與非施密特觸發(fā)器
文件頁數(shù): 8/8頁
文件大小: 70K
代理商: 74HC132
September 1993
8
Philips Semiconductors
Product specification
Quad 2-input NAND Schmitt trigger
74HC/HCT132
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
CCa
+
t
f
×
I
CCa
)
×
V
CC
.
Where:
Average I
CCa
differs with positive or negative input transitions, as shown in Figs 14 and 15.
P
ad
f
i
t
r
t
f
I
CCa
= additional power dissipation (
μ
W)
= input frequency (MHz)
= input rise time (ns); 10%
90%
= input fall time (ns); 10%
90%
= average additional supply current (
μ
A)
Fig.14 Average I
CC
for HC Schmitt trigger devices;
linear change of V
i
between 0.1 V
CC
to
0.9 V
CC
.
Fig.15 Average I
CC
for HCT Schmitt trigger
devices; linear change of V
i
between
0.1 V
CC
to 0.9 V
CC
.
HC/HCT132 used in a relaxation oscillator circuit, see Fig.16.
Note to Application information
All values given are typical unless otherwise specified.
PACKAGE OUTLINES
See
“74HC/HCT/HCU/HCMOS Logic Package Outlines”
.
Fig.16 Relaxation oscillator using HC/HCT132.
HC:
HCT:
f
1
T
0.8RC
=
f
1
T
0.67 RC
=
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相關代理商/技術參數(shù)
參數(shù)描述
74HC132AFN 制造商:Toshiba America Electronic Components 功能描述:
74HC132AN 制造商:AVX Corporation 功能描述:
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