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74F158APC 반도체 회로 부품 판매점

Quad 2-Input Multiplexer



Fairchild Semiconductor 로고
Fairchild Semiconductor
74F158APC 데이터시트, 핀배열, 회로
April 1988
Revised July 1999
74F158A
Quad 2-Input Multiplexer
General Description
The F158A is a high speed quad 2-input multiplexer. It
selects four bits of data from two sources using the com-
mon Select and Enable inputs. The four outputs present
the selected data in the inverted form. The F158A can also
generate any four of the 16 different functions of two vari-
ables.
Ordering Code:
Order Number Package Number
Package Description
74F158ASC
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
74F158ASJ
M16D
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74F158APC
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
Connection Diagram
IEEE/IEC
© 1999 Fairchild Semiconductor Corporation DS009484
www.fairchildsemi.com


74F158APC 데이터시트, 핀배열, 회로
Unit Loading/Fan Out
Pin Names
Description
I0a–I0d
I1a–I1d
E
S
Za–Zd
Source 0 Data Inputs
Source 1 Data Inputs
Enable Input (Active LOW)
Select Input
Inverted Outputs
U.L.
HIGH/LOW
1.0/1.0
1.0/1.0
1.0/1.0
1.0/1.0
50/33.3
Input IIH/IIL
Output IOH/IOL
20 µA/0.6 mA
20 µA/0.6 mA
20 µA/0.6 mA
20 µA/0.6 mA
1 mA/20 mA
Truth Table
Inputs
ES
HX
I0
X
LL
L
LL
H
LH
X
LH
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Zn = E × (I1nS + I0n S)
X
Outputs
I1 Z
XH
XH
XL
LH
HL
Functional Description
The F158A 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 F158A is the logic implementa-
tion 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 F158A 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 F158A can generate four functions
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.
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74F158APC multiplexer

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