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參數資料
| 型號： | MC74F353D |
| 廠商： | MOTOROLA INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | DUAL 4-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS |
| 中文描述： | F/FAST SERIES, DUAL 4 LINE TO 1 LINE MULTIPLEXER, INVERTED OUTPUT, PDSO16 |
| 封裝： | SOIC-16 |
| 文件頁數： | 1/3頁 |
| 文件大小： | 65K |
| 代理商： | MC74F353D |
4-160
FAST AND LS TTL DATA
DUAL 4-INPUT MULTIPLEXER
WITH 3-STATE OUTPUTS
The MC54/74F353 is a dual 4-input multiplexer with 3-state outputs. It can
select two bits of data from four sources using common Select inputs. The out-
puts may be individually switched to a high impedance state with a HIGH on
the respective Output Enable (OE) inputs, allowing the outputs to interface di-
rectly with bus-oriented systems.
Inverted Version of F253
Multifunction Capability
Separate Enables for Each Multiplexer
FUNCTIONAL DESCRIPTION
The MC54/74F353 contains two identical 4-input multiplexers with 3-state
outputs. They select two bits from four sources selected by common Select
inputs (S0, S1).The 4-input multiplexers have individual Output enable (OEa,
OEb) inputs which, when HIGH, force the outputs to a high impedance (high
Z) state. The logic equations for the outputs are shown below:
Za=OEa
(I0a
S1
S0 +I1a
S1
S0 + I2a
S1
S0 + I3a
S1
S0)
Zb=OEb
(I0b
S1
S0 + I1b
S1
S0 + I2b
S1
S0+I3b
S1
S0)
If the outputs of 3-state devices are tied together, all but one device must
be in the high impedance state to avoid high currents that would exceed the
maximum ratings. Designers should ensure that Output Enable signals to
3-state devices whose outputs are tied together are designed so that there is
no overlap.
CONNECTION DIAGRAM
(TOP VIEW)
15
16
14
13
12
11
10
2
1
3
4
5
6
7
VCC
9
8
OEb
S0
I3b
I2b
I1b
I0b
Zb
OEa
S1
I3a
I2a
I1a
I0a
Za
GND
DUAL 4-INPUT MULTIPLEXER
WITH 3-STATE OUTPUTS
MC54/74F353
J SUFFIX
CERAMIC
CASE 620-09
N SUFFIX
PLASTIC
CASE 648-08
16
1
16
1
ORDERING INFORMATION
MC54FXXXJ
MC74FXXXN
MC74FXXXD
Ceramic
Plastic
SOIC
16
1
D SUFFIX
SOIC
CASE 751B-03
LOGIC SYMBOL
2
14
1
6
5
4
3
10
11
12
13
15
9
7
Za
Zb
S1
S0
OEa
I0a
I1a
I2a
I3a
I0b
I1b
I2b
I3b
OEb
VCC = PIN 16
GND = PIN 8
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