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74HC161DB Datasheet(Hoja de datos) 3 Page - NXP Semiconductors

No. de Pieza. 74HC161DB
Descripción  Presettable synchronous 4-bit binary counter; asynchronous reset
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Fabricante  PHILIPS [NXP Semiconductors]
Página de inicio  http://www.nxp.com
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 3 page
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December 1990
3
Philips Semiconductors
Product specification
Presettable synchronous 4-bit binary
counter; asynchronous reset
74HC/HCT161
ORDERING INFORMATION
See
“74HC/HCT/HCU/HCMOS Logic Package Information”.
PIN DESCRIPTION
PIN NO.
SYMBOL
NAME AND FUNCTION
1
MR
asynchronous master reset (active LOW)
2
CP
clock input (LOW-to-HIGH, edge-triggered)
3, 4, 5, 6
D0 to D3
data inputs
7
CEP
count enable input
8
GND
ground (0 V)
9
PE
parallel enable input (active LOW)
10
CET
count enable carry input
14, 13, 12, 11
Q0 to Q3
flip-flop outputs
15
TC
terminal count output
16
VCC
positive supply voltage
Fig.1 Pin configuration.
Fig.2 Logic symbol.
Fig.3 IEC logic symbol.




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