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HEF40161B Datasheet(PDF) 4 Page - NXP Semiconductors

Part No. HEF40161B
Description  4-bit synchronous binary counter with asynchronous reset
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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HEF40161B Datasheet(HTML) 4 Page - NXP Semiconductors

 
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January 1995
4
Philips Semiconductors
Product specification
4-bit synchronous binary counter with
asynchronous reset
HEF40161B
MSI
HEF40161BP(N):
16-lead DIL; plastic (SOT38-1)
HEF40161BD(F):
16-lead DIL; ceramic (cerdip) (SOT74)
HEF40161BT(D):
16-lead SO; plastic (SOT109-1)
( ): Package Designator North America
Fig.3 Pinning diagram.
PINNING
PE
parallel enable input
P0 to P3
parallel data inputs
CEP
count enable parallel input
CET
count enable trickle input
CP
clock input (LOW to HIGH, edge-triggered)
MR
master reset input (active LOW)
O0 to O3
parallel outputs
TC
terminal count output
SYNCHRONOUS MODE SELECTION
Notes
1. MR = HIGH
2. H = HIGH state (the more positive voltage)
3. L = LOW state (the less positive voltage)
4. X = state is immaterial
PE
CEP
CET
MODE
L
X
X
preset
H
L
X
no change
H
X
L
no change
H
H
H
count
TERMINAL COUNT GENERATION
Note
1. TC = CET
. O0 . O1 . O2 . O3
CET
(O0 ⋅ O1 ⋅ O2 ⋅ O3)TC
LL
L
LH
L
HL
L
HH
H
Fig.4 State diagram.


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