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參數(shù)資料
| 型號： | SN74LS352N |
| 廠商： | MOTOROLA INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | DUAL 4-INPUT MULTIPLEXER |
| 中文描述： | LS SERIES, DUAL 4 LINE TO 1 LINE MULTIPLEXER, INVERTED OUTPUT, PDIP16 |
| 封裝： | PLASTIC, DIP-16 |
| 文件頁數(shù)： | 2/5頁 |
| 文件大?。?/td> | 160K |
| 代理商： | SN74LS352N |
5-506
FAST AND LS TTL DATA
SN54/74LS352
FUNCTIONAL DESCRIPTION
The SN54/74LS352 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.
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)
The SN54/74LS352 can be used to move data from a group
of registers 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 a function gen-
erator. The SN54/74LS352 can generate two functions of
three variables. This is useful for implementing highly irregular
random logic.
TRUTH TABLE
SELECT INPUTS
INPUTS
(a or b)
OUTPUT
S0
X
L
L
H
H
L
L
H
H
S1
X
L
L
L
L
H
H
H
H
E
I0
X
L
H
X
X
X
X
X
X
I1
X
X
X
L
H
X
X
X
X
I2
X
X
X
X
X
L
H
X
X
I3
X
X
X
X
X
X
X
L
H
Z
H
L
L
L
L
L
L
L
L
H
H
L
H
L
H
L
H
L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
VCC
Supply Voltage
54
74
4.5
4.75
5.0
5.0
5.5
5.25
V
TA
Operating Ambient Temperature Range
54
74
–55
0
25
25
125
70
°
C
IOH
IOL
Output Current — High
54, 74
–0.4
mA
Output Current — Low
54
74
4.0
8.0
mA
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