74LVT534 查看數據表（PDF） - Philips Electronics
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74LVT534 Datasheet PDF : 12 Pages
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Philips Semiconductors
3.3V Octal D-type flip-flop, inverting (3-State)
Product specification
74LVT534
LOGIC SYMBOL (IEEE/IEC)
1
EN
11
C1
3
1D
4
7
8
13
14
17
18
2
5
6
9
12
15
16
19
SA00163
FUNCTION TABLE
INPUTS
INTERNAL
OE CP Dn REGISTER
L↑
l
L
L
↑
h
H
L↑ X
NC
H↑ X
NC
H ↑ Dn
Dn
OUTPUTS
Q0 – Q7
OPERATING
MODE
H
Latch and read
L
register
NC
Hold
Z
Disable
Z
outputs
PIN DESCRIPTION
PIN NUMBER SYMBOL
FUNCTION
1
3, 4, 7, 8,
13, 14, 17, 18
2, 5, 6, 9,
12, 15, 16, 19
OE
D0-D7
Output enable input (active-Low)
Data inputs
Q0-Q7 Inverting 3-State outputs
11
CP
Clock pulse input (active rising
edge)
10
GND Ground (0V)
20
VCC Positive supply voltage
H=
h=
L=
l=
NC=
X=
Z=
↑=
↑=
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
LOGIC DIAGRAM
D0
D1
D2
D3
D4
D5
D6
D7
2
3
4
5
6
7
8
9
11
CP
1
OE
D
CP Q
D
CP Q
D
CP Q
D
CP Q
D
CP Q
D
CP Q
D
CP Q
D
CP Q
19
Q0
18
Q1
17
Q2
16
Q3
15
Q4
14
Q5
13
Q6
12
Q7
SV00168
1998 Feb 19
3
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