74LVT273 查看數據表（PDF） - Philips Electronics
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74LVT273 Datasheet PDF : 11 Pages
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Philips Semiconductors
3.3V Octal D flip-flop
Product specification
74LVT273
LOGIC SYMBOL (IEEE/IEC)
1
R
11
C1
3
1D
2
4
5
7
6
8
9
13
12
14
15
17
16
18
19
SV00019
PIN DESCRIPTION
PIN NUMBER
11
3, 4, 7, 8, 13, 14, 17, 18
2, 5, 6, 9, 12, 15, 16, 19
1
10
20
SYMBOL
CP
D0 – D7
Q0 – Q7
MR
GND
VCC
LOGIC DIAGRAM
D0
D1
D2
D3
3
4
7
8
11
CP
FUNCTION TABLE
INPUTS
MR
CP
Dn
OUTPUTS
Q0 – Q7
OPERATING
MODE
L
X
X
L
Reset (clear)
H
↑
h
H
Load “1”
H
↑
l
L
Load “0”
H
L
X
Q0
Retain state
H = High voltage level
h = High voltage level one set-up time prior to the Low-to-High
clock transition
L = Low voltage level
l = Low voltage level one set-up time prior to the Low-to-High
clock transition
X = Don’t care
↑ = Low-to-High clock transition
Q0 = Output as it was
NAME AND FUNCTION
Clock pulse input (active rising edge)
Data inputs
Data outputs
Master Reset input (active-Low)
Ground (0V)
Positive supply voltage
D4
13
D5
14
D6
17
D7
18
1
MR
DQ
CP
RD
DQ
CP
RD
DQ
CP
RD
DQ
CP
RD
DQ
CP
RD
DQ
CP
RD
DQ
CP
RD
DQ
CP
RD
2
5
6
9
12
15
16
19
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
SV00020
1998 Feb 19
3
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