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參數資料
| 型號： | MC74F352 |
| 廠商： | Motorola, Inc. |
| 英文描述： | DUAL 4-INPUT MULTIPLEXER |
| 中文描述： | 雙路4輸入多路復用器 |
| 文件頁數： | 2/3頁 |
| 文件大小： | 64K |
| 代理商： | MC74F352 |
4-158
FAST AND LS TTL DATA
MC54/74F352
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
VCC
Supply Voltage
54, 74
4.5
5.0
5.5
V
TA
Operating Ambient Temperature Range
54
- 55
25
125
°
C
74
0
25
70
IOH
Output Current — High
54, 74
–1.0
mA
IOL
Output Current — Low
54, 74
20
mA
FUNCTIONAL DESCRIPTION
The F352 is a dual 4-input multiplexer. It selects two bits of
data from up to four sources under the control of the common
Select inputs (S0, S1).The two 4-input multiplexer circuits
have individual active-LOW Enables(Ea, Eb) which can be
used to strobe the outputs independently. When the Enables
(Ea, Eb) are HIGH, the corresponding outputs (Za, Zb) are
forced HIGH.
The logic equations for the outputs are shown below:
The F352 can be used to move data from a group of regis-
ters to a common output bus. The particular register from
which the data came would be determined by the state of the
Select inputs. A less obvious application is as a function gen-
erator. The F352 can generate two functions of three vari-
ables. This is useful for implementing highly irregular random
logic.
Za =Ea
(I0a
S1
S0 + I1a
S1
S0 + I2a
S1
S0 + I3a
S1
S0)
Zb =Eb
(I0b
S1
S0 + I1b
S1
S0 + I2b
S1
S0 + I3b
S1
S0)
FUNCTION TABLE
Select
Inputs
Inputs (a or b)
Output
S0
S1
E
I0
I1
I2
I3
Z
X
X
H
X
X
X
X
H
L
L
L
L
X
X
X
H
L
L
L
H
X
X
X
L
H
L
L
X
L
X
X
H
H
L
L
X
H
X
X
L
L
H
L
X
X
L
X
H
L
H
L
X
X
H
X
L
H
H
L
X
X
X
L
H
H
H
L
X
X
X
H
L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
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