參數(shù)資料
型號(hào): HD74HC158
廠商: Hitachi,Ltd.
英文描述: These devices each consist of four 2-input digital multiplexers with common select and strobe inputs
中文描述: 這些器件每4 2組成,共同選擇和頻閃輸入輸入數(shù)字多路復(fù)用器
文件頁(yè)數(shù): 1/10頁(yè)
文件大?。?/td> 57K
代理商: HD74HC158
HD74HC157/HD74HC158
Quad. 2-to-1-line Data Selectors/Multiplexers
(with noninverted outputs)
Quad. 2-to-1-line Data Selectors/Multiplexers
(with inverted outputs)
Description
These devices each consist of four 2-input digital multiplexers with common select and strobe inputs. On
the HD74HC157, when the strobe input is at logical “L” the four outputs assume the values as selected
from the inputs. When the strobe input is at a logical “H” the outputs assume logical “L”. The
HD74HC158 operates in the same manner, except that its outputs are inverted. Select decoding is done
internally resulting in a single select input only. If enabled, the select input determines whether the A or B
inputs get routed to their corresponding Y outputs.
Features
High Speed Operation: t
pd
(Data to Output) = 12 ns typ (C
L
= 50 pF)
High Output Current: Fanout of 10 LSTTL Loads
Wide Operating Voltage: V
CC
= 2 to 6 V
Low Input Current: 1 μA max
Low Quiescent Supply Current: I
CC
(static) = 4 μA max (Ta = 25°C)
Function Table
Inputs
Output Y
Strobe
Select
A
B
HC157
HC158
H
X
X
X
L
H
L
L
L
X
L
H
L
L
H
X
H
L
L
H
X
L
L
H
L
H
X
H
H
L
相關(guān)PDF資料
PDF描述
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HD74HC164 Octal Buffers/Drivers With 3-State Outputs 20-CDIP -55 to 125
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