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Description
74HCT40104 View Datasheet(PDF) - Philips Electronics
Part Name
Description
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74HCT40104
4-bit bidirectional universal shift register; 3-state
Philips Electronics
74HCT40104 Datasheet PDF : 8 Pages
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Philips Semiconductors
4-bit bidirectional universal shift register;
3-state
Product specification
74HC/HCT40104
FUNCTION TABLE
OPE-
RATING
MODES
reset
shift left
shift right
parallel
load
INPUTS (OE = HIGH)
S
1
S
0
D
SR
D
SL
D
0
to
D
3
L LX X X
HLX L X
HLX H X
L HL X X
L HH X X
H HX X L
H HX X H
OUTPUTS at t
n
+
1
Q
0
Q
1
Q
2
Q
3
LL LL
Q
1
Q
2
Q
3
L
Q
1
Q
2
Q
3
H
L Q
0
Q
1
Q
2
H Q
0
Q
1
Q
2
LL LL
HH HH
Notes
1. H = HIGH voltage level
L = LOW voltage level
X = don’t care
t
n
+
1
= state after next LOW-to-HIGH transition of CP
Fig.4 Functional diagram.
December 1990
Fig.5 Logic diagram.
4
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