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参数资料
| 型号： | 74ALS139 |
| 厂商： | NXP Semiconductors N.V. |
| 英文描述： | Dual 1-of-4 decoder/demultiplexer(两通道4选1译码器/多路分解器) |
| 中文描述： | 双1 - 4解码器/分离器（两通道4选1译码器/多路分解器） |
| 文件页数： | 2/8页 |
| 文件大小： | 97K |
| 代理商： | 74ALS139 |
Philips Semiconductors
Product specification
74ALS139
Dual 1-of-4 decoder/demultiplexer
2
1991 Feb 08
853–1426 01670
FEATURES
Demultiplexing capability
Two independent 1-of-4 decoders
Multi-function capability
DESCRIPTION
The 74ALS139 is a dual 1-of-4 decoder/demultiplexer. This device
has two independent decoders, each accepting two binary weighted
inputs (A
0n
, A
1n
) 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)
74ALS139
6.0ns
4mA
ORDERING INFORMATION
ORDER CODE
DESCRIPTION
COMMERCIAL RANGE
V
CC
= 5V
±
10%,
T
amb
= 0
°
C to +70
°
C
DRAWING
NUMBER
16-pin plastic DIP
74ALS139N
SOT38-4
16-pin plastic SO
74ALS139D
SOT109-1
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
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74ALS (U.L.)
HIGH/LOW
LOAD VALUE
HIGH/LOW
A0n, A1n
Address inputs
1.0/1.0
20
μ
A/0.1mA
Ea, Eb
Enable inputs (active-Low)
1.0/1.0
20
μ
A/0.1mA
Q0n, Q1n
One (1.0) ALS unit load is defined as: 20
μ
A in the High state and 0.1mA in the Low state.
Data outputs
20/80
0.4mA/8mA
NOTE:
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
相关PDF资料 |
PDF描述 |
|---|---|
| 74ALS139N | Dual 1-of-4 decoder/demultiplexer |
| 74ALS151D | 8-input multiplexer |
| 74ALS151 | 8-input multiplexer(8输入多路复用器) |
| 74ALS151N | 8-input multiplexer |
| 74ALS153D | Dual 4-input multiplexer |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 74ALS139D | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Dual 1-of-4 decoder/demultiplexer |
| 74ALS139N | 制造商:NXP Semiconductors 功能描述: 制造商:NXP Semiconductors 功能描述:ALS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDIP16 |
| 74ALS151 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:8-input multiplexer |
| 74ALS151D | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:8-input multiplexer |
| 74ALS151M NSC89 | 制造商:National Semiconductor 功能描述:74ALS151 SMT NSC S8L2B |
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