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CD74HC21 Datasheet(PDF) 2 Page - Texas Instruments

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Part No. CD74HC21
Description  High Speed CMOS Logic Dual 4-Input AND Gate
Download  6 Pages
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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CD74HC21 Datasheet(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
NOTE: 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
CD74HC21, CD74HCT21


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