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| 型号： | MC74HC251ADG |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 编、解码器及复用、解复用 |
| 英文描述： | MULTIPLEXER, PDSO16 |
| 封装： | LEAD FREE, SOIC-16 |
| 文件页数： | 1/9页 |
| 文件大小： | 158K |
| 代理商： | MC74HC251ADG |
Semiconductor Components Industries, LLC, 2010
January, 2010 Rev. 0
1
Publication Order Number:
MC74HC251A/D
MC74HC251A
8-Input Data Selector/
Multiplexer with
3-State Outputs
HighPerformance SiliconGate CMOS
The MC54/74HC251 is identical in pinout to the LS251. The device
inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LSTTL outputs.
This device selects one of the eight binary Data Inputs, as
determined by the Address Inputs. The Output Enable pin must be a
low level for the selected data to appear at the outputs. If Output
Enable is high, both the Y and the Y outputs are in the
highimpedance state. This 3state feature allows the HC251 to be
used in busoriented systems.
The HC251 is similar in function to the HC251 which does not have
3state outputs.
Features
Output Drive Capability: 10 LSTTL Loads
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2 to 6 V
Low Input Current: 1 mA
High Noise Immunity Characteristic of CMOS Devices
These are PbFree Devices
http://onsemi.com
MARKING
DIAGRAMS
SOIC16
D SUFFIX
CASE 751B
TSSOP16
DT SUFFIX
CASE 948F
1
16
1
16
HC251AG
AWLYWW
HC
251A
ALYWG
G
1
16
A
= Assembly Location
WL, L
= Wafer Lot
YY, Y
= Year
WW, W = Work Week
G or G
= PbFree Package
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
ORDERING INFORMATION
(Note: Microdot may be in either location)
PIN ASSIGNMENT
1
16
13
14
15
16
9
10
11
12
5
4
3
2
1
8
7
6
D7
D6
D5
D4
VCC
A2
A1
A0
D0
D1
D2
D3
GND
OUTPUT
ENABLE
Y
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC74HC251ADR2G | 功能描述:编码器、解码器、复用器和解复用器 IC MULTIPLEXER 3ST 8INPUT 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 |
| MC74HC251ADTG | 功能描述:编码器、解码器、复用器和解复用器 IC MULTIPLEXER 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 |
| MC74HC251ADTR2G | 功能描述:编码器、解码器、复用器和解复用器 4 CH. EMI FILTER 3ST 8INPUT 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 |
| MC74HC251D | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC74HC251DR2 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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