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參數(shù)資料
| 型號(hào)： | SN74LS47N |
| 廠商： | MOTOROLA INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | 1A, 5V,±4% Tolerance, Negative Voltage Regulator, Ta = -40°C to +125°C; Package: 3 LEAD D2PAK; No of Pins: 3; Container: Tape and Reel; Qty per Container: 800 |
| 中文描述： | LS SERIES, SEVEN SEGMENT DECODER/DRIVER, INVERTED OUTPUT, PDIP16 |
| 封裝： | PLASTIC, DIP-16 |
| 文件頁數(shù)： | 2/3頁 |
| 文件大?。?/td> | 105K |
| 代理商： | SN74LS47N |
INPUTS
OUTPUTS
TRUTH TABLE
5-57
FAST AND LS TTL DATA
SN54/74LS47
14
15
LOGIC DIAGRAM
NUMERICAL DESIGNATIONS — RESULTANT DISPLAYS
0
1
2
3
4
5
6
7
8
9
10
11
12
13
INPUT
BLANKING INPUT OR
RIPPLE-BLANKING
OUTPUT
RIPPLE-BLANKING
INPUT
LAMP-TEST
INPUT
A
B
C
D
a
a
b
b
c
c
d
d
e
e
f
f
g
g
OUTPUT
DECIMAL
OR
FUNCTION
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
BI
RBI
LT
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
LT
RBI
D
C
B
A
BI/RBO
a
b
c
d
e
f
g
NOTE
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
X
H
L
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
X
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
X
L
X
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
X
L
X
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
X
L
X
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
X
L
X
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
H
L
H
L
L
H
L
H
L
L
L
H
H
H
L
H
H
H
H
L
L
L
L
L
L
H
H
L
L
L
H
H
L
H
H
H
H
H
L
L
L
H
L
L
L
L
L
L
L
H
L
H
H
H
H
H
H
L
L
H
L
L
H
L
L
H
L
H
L
L
H
L
L
H
H
H
L
L
H
L
H
H
H
L
H
L
H
L
H
H
H
L
H
H
H
L
L
H
H
H
L
L
L
H
L
L
H
H
L
L
L
H
H
H
L
H
H
L
L
L
L
L
H
L
L
L
L
L
L
L
H
H
H
L
A
A
B
C
D
NOTES:
(A) 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
of a decimal 0 is not desired. X = input may be HIGH or LOW.
(B) When a LOW level is applied to the blanking input (forced condition) all segment outputs go to a LOW level regardless of the state of
any other input condition.
(C) When ripple-blanking input (RBI) and inputs A, B, C, and D are at 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).
(D) 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.
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