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CD74HC221 Datasheet(Fiches technique) 2 Page - Texas Instruments

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Numéro de pièce CD74HC221
Description  High Speed CMOS Logic Dual Monostable Multivibrator with Reset
Télécharger  11 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
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CD74HC221 Datasheet(HTML) 2 Page - Texas Instruments

 
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2
Functional Diagram
TRUTH TABLE
INPUTS
OUTPUTS
AB
RQ
Q
HXH
L
H
XL
H
L
H
L
H
HH
XX
L
L
H
LH
(Note 3)
(Note 3)
NOTE:
H = High Voltage Level, L = Low Voltage Level, X = Irrelevant,
↑ = Transition from Low
to High Level, ↓ = Transition from High to Low Level,
= One High Level Pulse,
= One Low Level Pulse
3. For this combination the reset input must be low and the following sequence must
be used: pin 1 (or 9) must be set high or pin 2 (or 10) set low; then pin 1 (or 9)
must be low and pin 2 (or 10) set high. Now the reset input goes from low-to-high
and the device will be triggered.
2R
11
2A
9
10
5
12
2Q
2Q
2B
MONO 2
VCC
67
2CX
2CXRX
1R
3
1A
2
1
13
4
1Q
1Q
1B
MONO 1
VCC
14
15
1CX
1CXRX
1CX
1RX
2CX
2RX
CD74HC221, CD74HCT221


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