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參數(shù)資料
| 型號(hào)： | 74LCX157 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Low Voltage Quad 2-Input Multiplexer with 5V Tolerant Inputs |
| 中文描述： | 低電壓四2輸入與5V容限輸入復(fù)用器 |
| 文件頁(yè)數(shù)： | 2/9頁(yè) |
| 文件大?。?/td> | 99K |
| 代理商： | 74LCX157 |
www.fairchildsemi.com
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7
Functional Description
The LCX157 is a quad 2-input multiplexer. It selects four
bits of data from two sources under the control of a com-
mon Select input (S). The Enable input (E) is active-LOW.
When E is HIGH, all of the outputs (Z) are forced LOW
regardless of all other inputs. The LCX157 is the logic
implementation of a 4-pole, 2-position switch where the
position of the switch is determined by the logic levels sup-
plied to the Select input. The logic equations for the outputs
are shown below:
Z
a
=
E
(I
1a
S
+
I
0a
S)
Z
b
=
E
(I
1b
S
+
I
0b
S)
Z
c
=
E
(I
1c
S
+
I
0c
S)
Z
d
=
E
(I
1d
S
+
I
0d
S)
A common use of the LCX157 is the moving of data from
two groups of registers to four common output busses. The
particular register from which the data comes is determined
by the state of the Select input. A less obvious use is as a
function generator. The LCX157 can generate any four of
the sixteen different functions of two variables with one
variable common. This is useful for implementing gating
functions.
Truth Table
H
=
HIGH Voltage Level
L
=
LOW Voltage Level
X
=
Immaterial
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
Inputs
Outputs
E
S
I
0
I
1
Z
H
X
X
X
L
L
H
X
L
L
L
H
X
H
H
L
L
L
X
L
L
L
H
X
H
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74LCX157MTC | Low Voltage Quad 2-Input Multiplexer with 5V Tolerant Inputs |
| 74LCX157SJ | Low Voltage Quad 2-Input Multiplexer with 5V Tolerant Inputs |
| 74LCX157M | Low Voltage Quad 2-Input Multiplexer with 5V Tolerant Inputs |
| 74LCX157MTCX | Low Voltage Quad 2-Input Multiplexer with 5V Tolerant Inputs |
| 74LCX157MX | Low Voltage Quad 2-Input Multiplexer with 5V Tolerant Inputs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74LCX157M | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Qd 2-Input Multiplex RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| 74LCX157M | 制造商:Fairchild Semiconductor Corporation 功能描述:74LCX CMOS SMD 74LCX157 SOIC16 |
| 74LCX157M_Q | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Qd 2-Input Multiplex RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| 74LCX157MTC | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Qd 2-Input Multiplex RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| 74LCX157MTC | 制造商:Fairchild Semiconductor Corporation 功能描述:IC 2I/P QUAD MULTIPLEXER 制造商:Fairchild Semiconductor Corporation 功能描述:IC, 2I/P QUAD MULTIPLEXER, TSSOP-16 |
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