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Электронный компонент: HD74HC352

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HD74HC352
Dual 4-to-1-line Data Selectors/Multiplexers
Description
Each of these data selectors/multiplexers contains inverters and drivers to supply fully complementary
binary decoding data selection to the AND-OR-invert gates. Separate strobe inputs (G) are provided for
each of the two four-line sections.
Features
High Speed Operation: t
pd
(Data to Y) = 16 ns typ (C
L
= 50 pF)
High Output Current: Fanout of 10 LSTTL Loads
Wide Operating Voltage: V
CC
= 2 to 6 V
Low Input Current: 1 A max
Low Quiescent Supply Current: I
CC
(static) = 4 A max (Ta = 25C)
Function Table
Select Input
Data Inputs
Strobe
Output
B
A
C
0
C
1
C
2
C
3
G
Y
X
X
X
X
X
X
H
H
L
L
L
X
X
X
L
H
L
L
H
X
X
X
L
L
L
H
X
L
X
X
L
H
L
H
X
H
X
X
L
L
H
L
X
X
L
X
L
H
H
L
X
X
H
X
L
L
H
H
X
X
X
L
L
H
H
H
X
X
X
H
L
L
Select inputs A and B are common to both sections
HD74HC352
2
Pin Arrangement
1
2
3
4
5
6
7
8
Strobe 1G
Select B
1C
3
1C
2
1C
1
1C
0
Output 1Y
GND
V
CC
Strobe 2G
Select A
2C
3
2C
2
2C
1
2C
0
Output 2Y
16
15
14
13
12
11
10
9
Data inputs
Data inputs
(Top view)
HD74HC352
3
Logic Diagram
1Y
2Y
2G
1G
1C
0
1C
1
1C
2
1C
3
B
A
2C
0
2C
1
2C
2
2C
3
HD74HC352
4
DC Characteristics
Ta = 25
C
Ta = 40 to
+85
C
Item
Symbol
V
CC
(V) Min Typ Max Min
Max
Unit
Test Conditions
Input voltage
V
IH
2.0
1.5
--
--
1.5
--
V
4.5
3.15 --
--
3.15
--
6.0
4.2
--
--
4.2
--
V
IL
2.0
--
--
0.5
--
0.5
V
4.5
--
--
1.35 --
1.35
6.0
--
--
1.8
--
1.8
Output voltage
V
OH
2.0
1.9
2.0
--
1.9
--
V
Vin = V
IH
or V
IL
I
OH
= 20
A
4.5
4.4
4.5
--
4.4
--
6.0
5.9
6.0
--
5.9
--
4.5
4.18 --
--
4.13
--
I
OH
= 4 mA
6.0
5.68 --
--
5.63
--
I
OH
= 5.2 mA
V
OL
2.0
--
0.0
0.1
--
0.1
V
Vin = V
IH
or V
IL
I
OL
= 20
A
4.5
--
0.0
0.1
--
0.1
6.0
--
0.0
0.1
--
0.1
4.5
--
--
0.26 --
0.33
I
OL
= 4 mA
6.0
--
--
0.26 --
0.33
I
OL
= 5.2 mA
Input current
Iin
6.0
--
--
0.1 --
1.0
A
Vin = V
CC
or GND
Quiescent supply
current
I
CC
6.0
--
--
4.0
--
40
A
Vin = V
CC
or GND, Iout = 0
A
HD74HC352
5
AC Characteristics (C
L
= 50 pF, Input t
r
= t
f
= 6 ns)
Ta = 25
C
Ta = 40 to
+85
C
Item
Symbol
V
CC
(V) Min Typ Max Min
Max
Unit
Test Conditions
Propagation delay t
PLH
2.0
--
--
125 --
155
ns
Data to Y
time
t
PHL
4.5
--
16
25
--
31
6.0
--
--
21
--
26
2.0
--
--
160 --
200
ns
A or B to Y
4.5
--
18
32
--
40
6.0
--
--
27
--
34
2.0
--
--
100 --
125
ns
G to Y
4.5
--
10
20
--
25
6.0
--
--
17
--
21
Output rise/fall
t
TLH
2.0
--
--
75
--
95
ns
time
t
THL
4.5
--
5
15
--
19
6.0
--
--
13
--
16
Input capacitance
Cin
--
--
5
10
--
10
pF