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參數(shù)資料
| 型號： | 74VHC157SJX |
| 廠商： | Fairchild Semiconductor |
| 文件頁數(shù)： | 3/10頁 |
| 文件大?。?/td> | 0K |
| 描述： | MULTIPLEXER QUAD 2IN 16SOP |
| 標準包裝： | 2,000 |
| 系列： | 74VHC |
| 類型： | 多路復(fù)用器 |
| 電路： | 4 x 2:1 |
| 獨立電路： | 1 |
| 輸出電流高，低： | 8mA，8mA |
| 電壓電源： | 單電源 |
| 電源電壓： | 2 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.209"，5.30mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SOP |
| 包裝： | 帶卷 (TR) |
74VHC157
Quad
2-Input
Multiple
x
e
r
1992 Fairchild Semiconductor Corporation
www.fairchildsemi.com
74VHC157 Rev. 1.2
2
Logic Symbols
IEEE/IEC
Truth Table
H
= HIGH Voltage Level
L
= LOW Voltage Level
X
= Immaterial
Functional Description
The VHC157 is a quad 2-input multiplexer. It selects four
bits of data from two sources under the control of a
common 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 VHC157 is the
logic implementation of a 4-pole, 2-position switch where
the position of the switch is determined by the logic
levels supplied to the Select input. The logic equations
for the outputs are shown below:
Za = E (I1a S + I0a S)
Zb = E (I1b S + I0b S)
Zc = E (I1c S + I0c S)
Zd = E (I1d S + I0d S)
A common use of the VHC157 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 obvi-
ous use is as a function generator. The VHC157 can
generate any four of the sixteen different functions of two
variables with one variable common. This is useful for
implementing gating functions.
Inputs
Outputs
E
SI0
I1
Z
HX
X
L
LH
X
L
LH
X
H
LL
L
X
L
LL
H
X
H
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| 74VHC157T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD 2 CHANNEL MULTIPLEXER |
| 74VHC157TTR | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Quad 2-Ch Multiplexr 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 |
| 74VHC16 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:8-Bit Serial-In, Parallel-Out Shift Register |
| 74VHC161 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:4-Bit Binary Counter with Asynchronous Clear |
| 74VHC161284 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:IEEE 1284 Transceiver |
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