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參數(shù)資料
| 型號(hào)： | HD74LV157A |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Quad. 2-to-1 line Data Selectors / Multiplexers(Noninverted Outputs) |
| 中文描述： | 四。 2比1線數(shù)據(jù)選擇器/多路復(fù)用器（Noninverted產(chǎn)出） |
| 文件頁數(shù)： | 1/14頁 |
| 文件大小： | 62K |
| 代理商： | HD74LV157A |
HD74LV157A
Quad. 2-to-1 line Data Selectors / Multiplexers
(Noninverted Outputs)
ADE-205-263 (Z)
1st Edition
March 1999
Description
The HD74LV157A has four 2-input digital multiplexers with common select and strobe inputs. When the
strobe input is low, a 4-bit word is selected from one of two sources and is routed to the four outputs.
The device provides true data.
Low-voltage and high-speed operation is suitable for the battery-powered products (e.g., notebook
computers), and the low-power consumption extends the battery life.
Features
V
CC
= 2.0 V to 5.5 V operation
All inputs V
IH
(Max.) = 5.5 V (@V
CC
= 0 V to 5.5 V)
All outputs V
O
(Max.) = 5.5 V (@V
CC
= 0 V)
Typical V
OL
ground bounce < 0.8 V (@V
CC
= 3.3 V, Ta = 25
°
C)
Typical V
OH
undershoot > 2.3 V (@V
CC
= 3.3 V, Ta = 25
°
C)
Output current
±
6 mA (@V
CC
= 3.0 V to 3.6 V),
±
12 mA (@V
CC
= 4.5 V to 5.5 V)
Function Table
Inputs
STB
SEL
A
B
Output
H
X
X
X
L
L
L
L
X
L
L
L
H
X
H
L
H
X
L
L
L
Note:
H
X
H
H
H: High level
L: Low level
X: Immaterial
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