MC74LCX257集成電路（IC）的信號開關(guān)多路復用器解碼器規(guī)格書PDF中文資料

MC74LCX257屬于集成電路（IC）的信號開關(guān)多路復用器解碼器。由安森美半導體公司制造生產(chǎn)的MC74LCX257信號開關(guān)，多路復用器，解碼器邏輯型信號開關(guān)、多路復用器和編碼器 IC 可用于對以數(shù)字格式表示數(shù)據(jù)的電信號進行路由和選擇。這些器件與設計用于模擬信號的類似產(chǎn)品有所不同，它們保留的信息表示為兩個電狀態(tài)之一，而不是兩個外部界限內(nèi)的無窮變化量。

The MC74LCX257 is a high performance, quad 2?input multiplexer with 3?state outputs operating from a 2.3 to 3.6 V supply. High impedance TTL compatible inputs significantly reduce current loading to input drivers while TTL compatible outputs offer improved switching noise performance. A VI specification of 5.5 V allows MC74LCX257 inputs to be safely driven from 5.0 V devices.

Features

? Designed for 2.3 to 3.6 V VCC Operation

? 5.0 V Tolerant ? Interface Capability with 5.0 V TTL Logic

? Supports Live Insertion and Withdrawal

? IOFF Specification Guarantees High Impedance When VCC = 0 V

? LVTTL Compatible

? LVCMOS Compatible

? 24 mA Balanced Output Sink and Source Capability

? Near Zero Static Supply Current in All Three Logic States (10 A) Substantially Reduces System Power Requirements

? Latchup Performance Exceeds 500 mA

? ESD Performance: Human Body Model >2000 V Machine Model >200 V

? Pb?Free Packages are Available*