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CD74HCT21EE4 数据表(PDF) 2 Page - Texas Instruments

部件名 CD74HCT21EE4
功能描述  High-Speed CMOS Logic Dual 4-Input AND Gate
Download  13 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

CD74HCT21EE4 数据表(HTML) 2 Page - Texas Instruments

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background image
2
Functional Diagram
Logic Symbol
TRUTH TABLE
INPUTS
OUTPUT
nA
nB
nC
nD
nY
LX
X
X
L
XLX
X
L
XX
L
X
L
XXX
L
L
HHHHH
H = High Voltage Level, L = Low Voltage Level, X = Irrelevant
1A
1C
2A
2B
2D
1
4
5
9
12
13
6
2Y
1Y
8
1D
GND = 7
VCC = 14
NC = 3, 11
2C
1B
2
10
nA
nB
nY
nC
nD
CD54HC21, CD74HC21, CD74HCT21


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