MC74HC251ADG集成电路（IC）的信号开关多路复用器解码器规格书PDF中文资料

MC74HC251ADG属于集成电路（IC）的信号开关多路复用器解码器。由安森美半导体公司制造生产的MC74HC251ADG信号开关，多路复用器，解码器逻辑型信号开关、多路复用器和编码器 IC 可用于对以数字格式表示数据的电信号进行路由和选择。这些器件与设计用于模拟信号的类似产品有所不同，它们保留的信息表示为两个电状态之一，而不是两个外部界限内的无穷变化量。

8-Input Data Selector/Multiplexer with 3-State Outputs

High−Performance Silicon−Gate 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 high−impedance state. This 3−state feature allows the HC251 to be used in bus−oriented systems.

The HC251 is similar in function to the HC251 which does not have 3−state 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 μA

• High Noise Immunity Characteristic of CMOS Devices

• NLV Prefix for Automotive and Other Applications Requiring

Unique Site and Control Change Requirements; AEC−Q100

Qualified and PPAP Capable

• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS

Compliant