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74HCT221N Arkusz danych(PDF) 3 Page - NXP Semiconductors

Numer części 74HCT221N
Szczegółowy opis  Dual non-retriggerable monostable multivibrator with reset
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Producent  PHILIPS [NXP Semiconductors]
Strona internetowa  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74HCT221N Arkusz danych(HTML) 3 Page - NXP Semiconductors

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December 1990
3
Philips Semiconductors
Product specification
Dual non-retriggerable monostable
multivibrator with reset
74HC/HCT221
ORDERING INFORMATION
See
“74HC/HCT/HCU/HCMOS Logic Package Information”.
PIN DESCRIPTION
PIN NO.
SYMBOL
NAME AND FUNCTION
1, 9
1A, 2A
trigger inputs (negative-edge triggered)
2, 10
1B, 2B
trigger inputs (positive-edge triggered)
3, 11
1RD, 2RD
direct reset inputs (active LOW)
4, 12
1Q, 2Q
outputs (active LOW)
72REXT/CEXT
external resistor/capacitor connection
8
GND
ground (0 V)
13, 5
1Q, 2Q
outputs (active HIGH)
14, 6
1CEXT, 2CEXT
external capacitor connection
15
1REXT/CEXT
external resistor/capacitor connection
16
VCC
positive supply voltage
Fig.1 Pin configuration.
Fig.2 Logic symbol.
Fig.3 IEC logic symbol.


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