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DM74LS47 Arkusz danych(PDF) 5 Page - Fairchild Semiconductor

Numer części DM74LS47
Szczegółowy opis  BCD to 7-Segment Decoder/Driver with Open-Collector Outputs
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Producent  FAIRCHILD [Fairchild Semiconductor]
Strona internetowa  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

DM74LS47 Arkusz danych(HTML) 5 Page - Fairchild Semiconductor

  DM74LS47_07 Datasheet HTML 1Page - Fairchild Semiconductor DM74LS47_07 Datasheet HTML 2Page - Fairchild Semiconductor DM74LS47_07 Datasheet HTML 3Page - Fairchild Semiconductor DM74LS47_07 Datasheet HTML 4Page - Fairchild Semiconductor DM74LS47_07 Datasheet HTML 5Page - Fairchild Semiconductor DM74LS47_07 Datasheet HTML 6Page - Fairchild Semiconductor DM74LS47_07 Datasheet HTML 7Page - Fairchild Semiconductor DM74LS47_07 Datasheet HTML 8Page - Fairchild Semiconductor  
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background image
Logic Symbol
Truth Table
Decimal
Inputs
Outputs
or
Note
Function
LT
RBI
A3
A2
A1
A0
BI/RBO
a
b
c
d
e
f
g
0
H
H
LLLL
H
LLLLLL
H
(Note 7)
1
H
X
L
L
L
H
H
H
L
L
HHHH
(Note 7)
2
H
X
L
L
H
L
H
L
LHL
LHL
3
H
X
L
L
H
H
H
LLLL
H
H
L
4
H
X
L
H
L
L
H
HL
LH
HL
L
5
H
X
L
H
L
H
H
LHL
LHL
L
6
H
X
L
H
H
L
H
H
H
LLLLL
7
H
X
L
H
H
H
H
L
L
L
HHHH
8
H
X
H
L
L
L
H
LLLLLLL
9
H
X
H
L
L
H
H
LLL
H
H
LL
10
H
X
HLHL
H
H
H
H
L
L
H
L
11
H
X
H
L
H
H
H
H
HL
LH
HL
12
H
X
H
H
L
L
H
H
L
HHH
L
L
13
H
X
H
H
L
H
H
L
H
HLHL
L
14
H
X
H
H
H
L
H
H
H
H
LLLL
15
H
X
HHHH
H
HHHHHHH
BI
X
X
XXXX
L
HHHHHHH
(Note 8)
RBI
H
L
LLLL
L
HHHHHHH
(Note 9)
LT
L
X
XXXX
H
LLLLLLL
(Note 10)
Note 7: BI/RBO is wire-AND logic serving as blanking input (BI ) and/or ripple-blanking output (RBO ). The blanking out (BI ) must be open or held at a HIGH level
when output functions 0 through 15 are desired, and ripple-blanking input (RBI ) must be open or at a HIGH level if blanking or a decimal 0 is not desired. X = input
may be HIGH or LOW.
Note 8: When a LOW level is applied to the blanking input (forced condition) all segment outputs go to a HIGH level regardless of the state of any other input con-
dition.
Note 9: When ripple-blanking input (RBI) and inputs A0, A1, A2 and A3 are LOW level, with the lamp test input at HIGH level, all segment outputs go to a HIGH level
and the ripple-blanking output (RBO ) goes to a LOW level (response condition).
Note 10: When the blanking input/ripple-blanking output (BI/RBO ) is open or held at a HIGH level, and a LOW level is applied to lamp test input, all segment outputs
go to a LOW level.
DS009817-2
VCC = Pin 16
GND = Pin 8
5
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