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參數資料
型號: MM54C48
廠商: National Semiconductor Corporation
英文描述: BCD-to-7 Segment Decoder
中文描述: BCD碼到7段解碼器
文件頁數: 5/6頁
文件大小: 130K
代理商: MM54C48
Typical Applications
(Continued)
Gas Discharge Readout
TL/F/5883–10
Liquid Crystal (LC) Readout
TL/F/5883–11
Direct DC drive of LC’s not recommended for life of LC readouts.
Truth Table
Decimal
or
Function
Inputs
Outputs
BI/RBO
2
Note
LT
RBI
D
C
B
A
a
b
c
d
e
f
g
0
1
2
3
H
H
H
H
H
X
X
X
L
L
L
L
L
L
L
L
L
L
H
H
L
H
L
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
L
H
H
L
H
H
H
L
H
L
H
L
L
L
L
L
H
H
1
1
4
5
6
7
H
H
H
H
X
X
X
X
L
L
L
L
H
H
H
H
L
L
H
H
L
H
L
H
H
H
H
H
L
H
L
H
H
L
L
H
H
H
H
H
L
H
H
L
L
L
H
L
H
H
H
L
H
H
H
L
8
9
H
H
H
H
X
X
X
X
H
H
H
H
L
L
L
L
L
L
H
H
L
H
L
H
H
H
H
H
H
H
L
L
H
H
L
L
H
H
L
H
H
L
H
H
H
L
H
L
H
H
L
L
H
H
H
H
10
11
12
13
14
15
H
H
H
H
X
X
X
X
H
H
H
H
H
H
H
H
L
L
H
H
L
H
L
H
H
H
H
H
L
H
L
L
H
L
L
L
L
L
L
L
L
H
H
L
L
L
H
L
H
H
H
L
H
H
H
L
BI
RBI
LT
X
H
L
X
L
X
X
L
X
X
L
X
X
L
X
X
L
X
L
L
H
L
L
H
L
L
H
L
L
H
L
L
H
L
L
H
L
L
H
L
L
H
2
3
4
H
e
high level, L
e
low level, X
e
irrelevant
Note 1:
The blanking input (BI) must be open when output functions 0–15 are desired. The ripple-blanking input (RBI) must be high, if blanking of a decimal
zero is not desired.
Note 2:
When a low logic level is applied directly to the blanking input (BI), all segment outputs are low regardless of the level of any other input.
Note 3:
When ripple-blanking input (RBI) and inputs A, B, C, and D are at a low level with the lamp-test input high, all segment outputs go low and the ripple-
blanking output (RBO) goes to a low level (response condition).
Note 4:
When the blanking input/ripple-blanking output (BI/RBO) is open and a low is applied to the lamp-test input, all segment outputs are high.
2
One BI/RBO is wire-AND logic serving as blanking input (BI) and/or ripple-blanking output (RBO).
5
相關PDF資料
PDF描述
MM54C48J BCD-to-7 Segment Decoder
MM54C48N BCD-to-7 Segment Decoder
MM74C48J BCD-to-7 Segment Decoder
MM74C48N BCD-to-7 Segment Decoder
MM54C74 Dual D Flip-Flop
相關代理商/技術參數
參數描述
MM54C48 WAF 制造商:Texas Instruments 功能描述:
MM54C48J 制造商:NSC 制造商全稱:National Semiconductor 功能描述:BCD-to-7 Segment Decoder
MM54C48N 制造商:NSC 制造商全稱:National Semiconductor 功能描述:BCD-to-7 Segment Decoder
MM54C48W/883C 制造商:Rochester Electronics LLC 功能描述:- Bulk
MM54C74 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual D Flip-Flop
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