74ABT574ADB 데이터 시트보기 (PDF) - Philips Electronics
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74ABT574ADB Datasheet PDF : 11 Pages
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Philips Semiconductors
Octal D-type flip-flop (3-State)
Product specification
74ABT574A
LOGIC SYMBOL
23456789
D0 D1 D2 D3 D4 D5 D6 D7
11
CP
1
OE
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
19 18 17 16 15 14 13 12
LOGIC SYMBOL (IEEE/IEC)
SA00104
FUNCTION TABLE
INPUTS
INTERNAL OUTPUTS
OE CP Dn REGISTER Q0 – Q7
OPERATING
MODE
L↑
l
L
L↑ h
H
L
Load and read
H
register
L↑X
NC
NC
Hold
H
H
H=
h=
L=
l=
NC=
X=
Z=
↑=
↑=
↑X
NC
↑ Dn
Dn
Z
Z
Disable outputs
High voltage level
High voltage level one set-up time prior to the Low–to–High
clock transition
Low voltage level
Low voltage level one set-up time prior to the Low–to–High
clock transition
No change
Don’t care
High impedance “off” state
Low-to-High clock transition
not a Low-to-High clock transition
1
EN
11
C1
2
2D
1
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
LOGIC DIAGRAM
SA00105
D0
D1
D2
D3
D4
D5
D6
D7
2
3
4
5
6
7
8
9
D
CP Q
D
CP Q
D
CP Q
D
CP Q
D
CP Q
D
CP Q
D
CP Q
D
CP Q
11
CP
1
OE
19
Q0
18
Q1
17
Q2
16
Q3
15
Q4
14
Q5
13
Q6
12
Q7
SA00106
1995 May 22
3
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