參數(shù)資料
型號: MC74AC253
廠商: ON SEMICONDUCTOR
英文描述: DUAL 4-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS
中文描述: 雙路4輸入多路復用器與三態(tài)輸出
文件頁數(shù): 1/8頁
文件大小: 179K
代理商: MC74AC253
5-1
FACT DATA
The MC74AC253/74ACT253 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
outputs may be individually switched to a high impedance state with a HIGH on the
respective Output Enable (OE) inputs, allowing the outputs to interface directly with
bus oriented systems.
Multifunctional Capability
Noninverting 3-State Outputs
Outputs Source/Sink 24 mA
ACT253 Has TTL Compatible Inputs
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
PIN NAMES
I0a–I3a
I0b–I3b
S0, S1
OEa
OEb
Za, Zb
Side A Data Inputs
Side B Data Inputs
Common Select Inputs
Side A Output Enable Input
Side B Output Enable Input
3-State Outputs
TRUTH TABLE
Select
Inputs
Data Inputs
Output
Enable
Outputs
S0
X
L
L
H
H
L
L
H
H
S1
X
L
L
L
L
H
H
H
H
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
OE
Z
H
L
L
L
L
L
L
L
L
Z
L
H
L
H
L
H
L
H
Address inputs S0 and S1 are common to both sections.
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
DUAL 4-INPUT
MULTIPLEXER WITH
3-STATE OUTPUTS
N SUFFIX
CASE 648-08
PLASTIC
D SUFFIX
CASE 751B-05
PLASTIC
LOGIC SYMBOL
S0
S1
OEaI0aI1aI2aI3a
Za
Zb
I0bI1bI2bI3bOEb
相關PDF資料
PDF描述
MC74ACT253 DUAL 4-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS
MC74AC253N DUAL 4-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS
MC74ACT253D DUAL 4-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS
MC74ACT253N DUAL 4-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS
MC74AC256D DUAL 4-BIT ADDRESSABLE LATCH
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