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NLV74HC251ADR2G

更新时间： 2024-11-06 11:01:47

品牌	Logo	应用领域
安森美 - ONSEMI		复用器解复用器
页数	文件大小	规格书
9页	146K
描述
8 输入多工器（3 态）

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中文翻译

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数据手册

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NLV74HC251ADR2G 数据手册

MC74HC251A

8-Input Data Selector/

Multiplexer with

3-State Outputs

High−Performance Silicon−Gate CMOS

http://onsemi.com

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.

MARKING

DIAGRAMS

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

high−impedance state. This 3−state feature allows the HC251 to be

used in bus−oriented systems.

SOIC−16

D SUFFIX

CASE 751B

HC251AG

AWLYWW

TSSOP−16

DT SUFFIX

CASE 948F

251A

ALYWG

The HC251 is similar in function to the HC251 which does not have

3−state outputs.

Features

WL, L

YY, Y

= Assembly Location

= Wafer Lot

= Year

• 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 Pb−Free Devices

WW, W = Work Week

G or G

= Pb−Free Package

(Note: Microdot may be in either location)

PIN ASSIGNMENT

15 D4

14 D5

13 D6

12 D7

11 A0

10 A1

OUTPUT

ENABLE

GND

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 6 of this data sheet.

Publication Order Number:

January, 2010 − Rev. 0

MC74HC251A/D

12 3 4 5 6 7...9

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