- 您现在的位置：买卖IC网 > PDF目录29123 > MC74AC157MR2 (ON SEMICONDUCTOR) AC SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16 PDF资料下载
参数资料
| 型号： | MC74AC157MR2 |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 编、解码器及复用、解复用 |
| 英文描述： | AC SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16 |
| 封装： | EIAJ-16 |
| 文件页数： | 2/6页 |
| 文件大小： | 102K |
| 代理商： | MC74AC157MR2 |
MC74AC157, MC74ACT157
http://onsemi.com
94
Figure 2. Logic Symbol
S
EI0a I1a I0b I1b
Zb
I0c I1c I0d I1d
Za
Zc
Zd
FUNCTIONAL DESCRIPTION
The
MC74AC157/74ACT157
is
a
quad
2input
multiplexer. It selects four bits of data from two sources
under the control of a common Select input (S). The Enable
input (E) is activeLOW. When E is HIGH, all of the outputs
(Z) are forced LOW regardless of all other inputs. The
MC74AC157/74ACT157 is the logic implementation of a
4pole, 2position switch where the position of the switch
is determined by the logic levels supplied to the Select input.
The logic equations for the outputs are shown below:
Za = E(I1aS+I0aS)
Zb = E(I1bS+I0bS)
Zc = E(I1cS+I0cS)
Zd = E(I1dS+I0dS)
A common use of the MC74AC157/74ACT157 is the
moving of data from two groups of registers to four common
output busses. The particular register from which the data
comes is determined by the state of the Select input. A less
obvious
use
is
as
a
function
generator.
The
MC74AC157/74ACT157 can generate any four of the
sixteen different functions of two variables with one
variable common. This is useful for implementing gating
functions.
Figure 3. Logic Diagram
I0a
I1a
I0b
I1b
I0c
I1c
I0d
I1d
E
S
Za
NOTE:
This diagram is provided only for the understanding of logic
operations and should not be used to estimate propagation delays.
Zb
Zc
Zd
相关PDF资料 |
PDF描述 |
|---|---|
| MC74AC174D | AC SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, PDSO16 |
| MC74AC174N | AC SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, PDIP16 |
| MC74AC175DR2 | AC SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, COMPLEMENTARY OUTPUT, PDSO16 |
| MC74ACT175DR2 | ACT SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, COMPLEMENTARY OUTPUT, PDSO16 |
| MC74AC175DTR2 | AC SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, COMPLEMENTARY OUTPUT, PDSO16 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC74AC157N | 功能描述:编码器、解码器、复用器和解复用器 2-6V Quad 2-Input 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 |
| MC74AC157NG | 功能描述:编码器、解码器、复用器和解复用器 2-6V Quad 2-Input 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 |
| MC74AC158D | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:ON Semiconductor 功能描述: |
| MC74AC158N | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:QUAD 2-INPUT MULTIPLEXER |
| MC74AC160D | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
发布紧急采购，3分钟左右您将得到回复。