DESCRIPTION

The M54/74HC138 is a high speed CMOS 3 TO 8 LINE DECODER fabricated in silicon gate C2MOS technology. It has the same high speed performance of LSTTL combinedwithtrue CMOSlowpower consumption.

■ HIGH SPEED tPD = 16 ns (TYP.) at VCC = 5 V

■ LOW POWER DISSIPATION ICC = 4 μA AT TA = 25 °C

■ OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS

■ BALANCED PROPAGATION DELAYS tPLH = tPHL

■ SYMMETRICAL OUTPUT IMPEDANCE |IOH| = IOL

■ COMPATIBLE WITH TTL OUTPUTS VIH = 2V (MIN.) VIL = 0.8V (MAX)

■ PIN AND FUNCTION COMPATIBLE WITH 54/74LS138

M74HCT138B1R屬于集成電路（IC） > 信號開關(guān)，多路復(fù)用器，解碼器。意法半導(dǎo)體（ST）集團(tuán)制造生產(chǎn)的M74HCT138B1R信號開關(guān)，多路復(fù)用器，解碼器邏輯型信號開關(guān)、多路復(fù)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(jìn)行路由和選擇。這些器件與設(shè)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。