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参数资料
| 型号： | SN74LS139DR2 |
| 厂商： | MOTOROLA INC |
| 元件分类： | 编、解码器及复用、解复用 |
| 英文描述： | LS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDSO16 |
| 封装： | SOIC-16 |
| 文件页数： | 2/3页 |
| 文件大小： | 60K |
| 代理商： | SN74LS139DR2 |
5-2
FAST AND LS TTL DATA
SN54/74LS139
FUNCTIONAL DESCRIPTION
The LS139 is a high speed dual 1-of-4 decoder/demultiplex-
er fabricated with the Schottky barrier diode process. The
device has two independent decoders, each of which accept
two binary weighted inputs (A0, A1) and provide four mutually
exclusive active LOW outputs (O0–O3). Each decoder has an
active LOW Enable (E). When E is HIGH all outputs are forced
HIGH. The enable can be used as the data input for a 4-output
demultiplexer application.
Each half of the LS139 generates all four minterms of two
variables. These four minterms are useful in some applica-
tions, replacing multiple gate functions as shown in Fig. a, and
thereby reducing the number of packages required in a logic
network.
TRUTH TABLE
INPUTS
OUTPUTS
E
A0
A1
O0
O1
O2
O3
H
X
H
L
LL
L
HHH
L
HL
H
LH
H
L
LH
H
HLH
L
H
L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
VCC
Supply Voltage
54
74
4.5
4.75
5.0
5.5
5.25
V
TA
Operating Ambient Temperature Range
54
74
–55
0
25
125
70
°C
IOH
Output Current — High
54, 74
– 0.4
mA
IOL
Output Current — Low
54
74
4.0
8.0
mA
Figure a
E
A0
A1
E
A0
A1
E
A0
A1
E
A0
A1
O0
O1
O2
O3
E
A0
A1
E
A0
A1
E
A0
A1
E
A0
A1
O0
O1
O2
O3
相关PDF资料 |
PDF描述 |
|---|---|
| SN74LS139JD | LS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, CDIP16 |
| SN74LS139JDS | LS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, CDIP16 |
| SN74LS139NDS | LS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDIP16 |
| SN74LS139NG | LS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDIP16 |
| SN74LS145FN | LS SERIES, DECIMAL DECODER/DRIVER, INVERTED OUTPUT, PQCC20 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SN74LS139M | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SN74LS139N | 制造商:Panasonic Industrial Company 功能描述:IC |
| SN74LS139ND | 制造商:Motorola Inc 功能描述: |
| SN74LS139NDS | 制造商:Motorola Inc 功能描述: |
| SN74LS145D | 功能描述:编码器、解码器、复用器和解复用器 BDC to Decimal RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
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