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參數(shù)資料
| 型號： | 74F139 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Dual 1-of-4 Decoder/Demultiplexer |
| 中文描述： | 雙1 - 4解碼器/解復用器 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 75K |
| 代理商： | 74F139 |
Philips Semiconductors
Product specification
74F139
1-of-4 decoder/demultiplexer
2
February 23, 1990
853–0344 98903
FEATURES
Demultiplexing capability
Two independent 1-of-4 decoders
Multifunction capability
DESCRIPTION
The 74F139 is a high speed, dual 1-of-4 decoder/demultiplexer. This
device has two independent decoders, each accepting two binary
weighted inputs (A0n, A1n) and providing four mutually exclusive
active-Low outputs (Q0n–Q3n). Each decoder has an active-Low
Enable (E). When E is High, every output is forced High. The Enable
can be used as the Data input for a 1-of-4 demultiplexer application.
TYPE
TYPICAL
PROPAGATION
DELAY
TYPICAL
SUPPLY CURRENT
(TOTAL)
74F139
5.3ns
13mA
PIN CONFIGURATION
16
15
14
13
12
11
10
7
6
5
4
3
2
1
Q3a
V
CC
Q0b
Q1b
Q2b
A1b
Eb
A0b
Ea
A0a
Q2a
A1a
Q0a
Q1a
9
8
GND
Q3b
SF00129
ORDERING INFORMATION
DESCRIPTION
COMMERCIAL RANGE
V
CC
= 5V
±
10%,
T
amb
= 0
°
C to +70
°
C
PKG DWG #
16-pin plastic DIP
N74F139N
SOT38-4
16-pin plastic SO
N74F139D
SOT109-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74F (U.L.) HIGH/LOW
LOAD VALUE HIGH/LOW
Ana, Anb
Address inputs
1.0/1.0
20
μ
A/0.6mA
Ea, Eb
Enable inputs (active Low)
1.0/1.0
20
μ
A/0.6mA
Q0n–Q3n
Data outputs (active Low)
50/33
1.0mA/20mA
NOTE:
One (1.0) FAST unit load is defined as: 20
μ
A in the High state and 0.6mA in the Low state.
LOGIC SYMBOL
A0a
A1a
Ea
1
2
3
V
= Pin 16
GND = Pin 8
SF00130
Q0a
Q1a Q2a
4
5
6
Q3a
7
A0b
A1b
Eb
15
14
13
Q0b
Q1b Q2b
12
11
10
Q3b
9
DECODER a
DECODER b
IEC/IEEE SYMBOL
SF00131
DEMUX
2
3
1
14
13
15
4
5
6
7
12
11
10
9
0
1
0
1
2
G0
3
3
相關PDF資料 |
PDF描述 |
|---|---|
| 74F139PC | Dual 1-of-4 Decoder/Demultiplexer |
| 74F139SC | Dual 1-of-4 Decoder/Demultiplexer |
| 74F139SJ | Dual 1-of-4 Decoder/Demultiplexer |
| 74F139 | Dual 1-of-4 Decoder/Demultiplexer |
| 74F139PC | Dual 1-of-4 Decoder/Demultiplexer |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 74F139_00 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Dual 1-of-4 Decoder/Demultiplexer |
| 74F139DC | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| 74F139LC | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| 74F139N | 制造商:NXP Semiconductors 功能描述: |
| 74F139PC | 功能描述:編碼器、解碼器、復用器和解復用器 Dual 1-to-4 Dec/Dem 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
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