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 鈥淟鈥?the four outputs assume the values as selected
from the inputs. When the strobe input is at a logical 鈥淗鈥?the outputs assume logical 鈥淟鈥? 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
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
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 碌A(chǔ) max
Low Quiescent Supply Current: I
CC
(static) = 4 碌A(chǔ) max (Ta = 25擄C)
Function Table
Inputs
Strobe
H
L
L
L
L
Select
X
L
L
H
H
A
X
L
H
X
X
B
X
X
X
L
H
Output Y
HC157
L
L
H
L
H
HC158
H
H
L
H
L
next
HD74HC158相關(guān)型號(hào)PDF文件下載
-
型號(hào)
版本
描述
廠商
下載
-
英文版
TTL HD74/HD74S Series
HITACHI
-
英文版
TTL HD74/HD74S Series
HITACHI [H...
-
英文版
TTL HD74/HD74S Series
HITACHI
-
英文版
TTL HD74/HD74S Series
HITACHI [H...
-
英文版
TTL HD74/HD74S Series
HITACHI
-
英文版
TTL HD74/HD74S Series
HITACHI [H...
-
英文版
TTL HD74/HD74S Series
HITACHI
-
英文版
TTL HD74/HD74S Series
HITACHI [H...
-
英文版
TTL HD74/HD74S Series
HITACHI
-
英文版
TTL HD74/HD74S Series
HITACHI [H...
-
英文版
TTL HD74/HD74S Series
HITACHI
-
英文版
TTL HD74/HD74S Series
HITACHI [H...
-
英文版
TTL HD74/HD74S Series
HITACHI
-
英文版
TTL HD74/HD74S Series
HITACHI [H...
-
英文版
TTL HD74/HD74S Series
HITACHI
-
英文版
TTL HD74/HD74S Series
HITACHI [H...
-
英文版
TTL HD74/HD74S Series
HITACHI
-
英文版
TTL HD74/HD74S Series
HITACHI [H...
-
英文版
TTL HD74/HD74S Series
HITACHI
-
英文版
TTL HD74/HD74S Series
HITACHI [H...