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參數(shù)資料
| 型號(hào)： | MM74C48J |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | BCD-to-7 Segment Decoder |
| 中文描述： | CMOS SERIES, SEVEN SEGMENT DECODER/DRIVER, TRUE OUTPUT, CDIP16 |
| 封裝： | CERAMIC, DIP-16 |
| 文件頁(yè)數(shù)： | 5/6頁(yè) |
| 文件大小： | 130K |
| 代理商： | MM74C48J |
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
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| MM74C48N | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 BCD-to-7 Sec Decod RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
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