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參數資料
| 型號： | MC74AC158N |
| 廠商： | MOTOROLA INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | QUAD 2-INPUT MULTIPLEXER |
| 中文描述： | AC SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, INVERTED OUTPUT, PDIP16 |
| 封裝： | PLASTIC, DIP-16 |
| 文件頁數： | 2/6頁 |
| 文件大小： | 169K |
| 代理商： | MC74AC158N |
MC74AC158 MC74ACT158
5-2
FACT DATA
FUNCTIONAL DESCRIPTION
The MC74AC158/74ACT158 quad 2-input multiplexer
selects four bits of data from two sources under the control of
a common Select input (S) and presents the data in inverted
form at the four outputs. The Enable input (E) is active-LOW.
When E is HIGH, all of the outputs (Z) are forced HIGH
regardless of all other inputs. The MC74AC158/74ACT158 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.
A common use of the MC74AC158/74ACT158 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 MC74AC158/
74ACT158 can generate four functions of two variables with
one variable common. This is useful for implementing gating
functions.
LOGIC DIAGRAM
I0a
I1a
I0b
I1b
I0c
I1c
I0d
I1d
E
S
Za
Please note that this diagram is provided only for the understanding of logic
operations and should not be used to estimate propagation delays.
Zb
Zc
Zd
MAXIMUM RATINGS*
Symbol
Parameter
Value
Unit
VCC
Vin
Vout
Iin
Iout
ICC
Tstg
DC Supply Voltage (Referenced to GND)
–0.5 to +7.0
V
DC Input Voltage (Referenced to GND)
–0.5 to VCC +0.5
–0.5 to VCC +0.5
±
20
V
DC Output Voltage (Referenced to GND)
V
DC Input Current, per Pin
mA
DC Output Sink/Source Current, per Pin
±
50
mA
DC VCC or GND Current per Output Pin
Storage Temperature
±
50
mA
–65 to +150
°
C
* Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended
Operating Conditions.
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