74ACT158PC Fairchild Semiconductor, 74ACT158PC Datasheet - Page 2
![IC MULTIPLEXER QUAD 2IN 16-SOP](/photos/5/45/54533/261-16-soic_sml.jpg)
74ACT158PC
Manufacturer Part Number
74ACT158PC
Description
IC MULTIPLEXER QUAD 2IN 16-SOP
Manufacturer
Fairchild Semiconductor
Series
74ACTr
Type
Multiplexerr
Datasheet
1.74ACT158PC.pdf
(8 pages)
Specifications of 74ACT158PC
Circuit
4 x 2:1
Independent Circuits
1
Current - Output High, Low
24mA, 24mA
Voltage Supply Source
Single Supply
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (5.3mm Width), 16-SO, 16-SOEIIJ
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
74ACT158
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
74ACT158PC
Manufacturer:
ST
Quantity:
4 249
www.fairchildsemi.com
Functional Description
The ACT158 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 regard-
less of all other inputs. The ACT158 is the logic implemen-
tation 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 ACT158 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 ACT158 can generate four func-
tions of two variables with one variable common. This is
useful for implementing gating functions.
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
2
Truth Table
H
L
X
LOW Voltage Level
HIGH Voltage Level
Immaterial
E
H
L
L
L
L
S
X
H
H
L
L
Inputs
I
X
H
X
X
L
0
I
X
X
H
L
X
1
Outputs
H
H
H
Z
L
L