参数资料
型号: 74AC139PC
厂商: Fairchild Semiconductor
文件页数: 2/9页
文件大小: 0K
描述: IC DECODER/DEMUX DUAL 1OF4 16DIP
标准包装: 25
系列: 74AC
类型: 解码器/多路分解器
电路: 1 x 2:4
独立电路: 2
输出电流高,低: 24mA,24mA
电压电源: 单电源
电源电压: 2 V ~ 6 V
工作温度: -40°C ~ 85°C
安装类型: 通孔
封装/外壳: 16-DIP(0.300",7.62mm)
供应商设备封装: 16-DIP
包装: 管件
其它名称: 74AC139
www.fairchildsemi.com
2
74AC139
74ACT139
Logic Symbols
IEEE/IEC
Truth Table
H
= HIGH Voltage Level
L
= LOW Voltage Level
X
= Immaterial
Functional Description
The AC/ACT139 is a high-speed dual 1-of-4 decoder/
demultiplexer. The device has two independent decoders,
each of which accepts two binary weighted inputs (A0–A1)
and provides 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 AC/ACT139 generates all four
minterms of two variables. These four minterms are useful
in some applications, replacing multiple gate functions as
shown in Figure 1, and thereby reducing the number of
packages required in a logic network.
FIGURE 1. Gate Functions (Each Half)
Logic Diagram
Please note that this diagram is provided only for the understanding of logic
operations and should not be used to estimate propagation delays.
Inputs
Outputs
E
A0
A1
O0
O1
O2
O3
H
X
HHHH
L
LLL
H
L
H
LH
H
L
HHH
L
H
L
HHHHH
L
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相关代理商/技术参数
参数描述
74AC139PC 制造商:Fairchild Semiconductor Corporation 功能描述:DECODER/DEMULTIPLEXER LOGIC IC ((NW))
74AC139PC_NL 功能描述:编码器、解码器、复用器和解复用器 Logic IC 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
74AC139PC_Q 功能描述:编码器、解码器、复用器和解复用器 Dl 1-of-4 Dec/Demul 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
74AC139PCQR 制造商:未知厂家 制造商全称:未知厂家 功能描述:2-To-4-Line Demultiplexer
74AC139SC 功能描述:编码器、解码器、复用器和解复用器 Dl 1-of-4 Dec/Demul 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