CD74HC147PWT集成電路（IC）的信號(hào)開關(guān)多路復(fù)用器解碼器規(guī)格書PDF中文資料

CD74HC147PWT屬于集成電路（IC）的信號(hào)開關(guān)多路復(fù)用器解碼器。由德州儀器制造生產(chǎn)的CD74HC147PWT信號(hào)開關(guān)，多路復(fù)用器，解碼器邏輯型信號(hào)開關(guān)、多路復(fù)用器和編碼器 IC 可用于對(duì)以數(shù)字格式表示數(shù)據(jù)的電信號(hào)進(jìn)行路由和選擇。這些器件與設(shè)計(jì)用于模擬信號(hào)的類似產(chǎn)品有所不同，它們保留的信息表示為兩個(gè)電狀態(tài)之一，而不是兩個(gè)外部界限內(nèi)的無窮變化量。

1 Features

? Buffered inputs and outputs

? Typical propagation delay: 13ns at VCC = 5V, CL =

15pF, TA = 25oC

? Fanout (over temperature range)

– Bus driver outputs: 15 LSTTL loads

? Wide operating temperature range: -55oC to 125oC

? Balanced propagation delay and transition times

? Significant power reduction compared to LSTTL

logic ICs

? HC types

– 2V to 6V Operation

– High noise immunity: NIL = 30%, NIH = 30% of

VCC at VCC = 5V

? HCT types

– 4.5V to 5.5V Operation

– Direct LSTTL input logic compatibility, VIL= 0.8V

(Max), VIH = 2V (Min)

– CMOS input compatibility, Il ≤ 1μA at VOL, VOH

2 Description

The CDx4HC147 and CD74HCT147 are 9-input

priority encoders. These devices provide the 10-line to

4-line priority encoding function by use of the implied

decimal “zero.”