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3-to-8 line decoder/demultiplexer for memory chip select and digital logic design
SMD | CMOS | 3 inputs, 8 outputs | 2.0-6.0V | -40 to 125C | 10 x 4 x 1.45mm
Cascade several devices to build a 1-of-32 decoder
滿千免運優惠(限郵寄和超商純取貨) on order
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74HC138D 是一款高速 CMOS 3-to-8 線解碼器/解多工器。它能將三個二進位輸入(A0、A1、A2)解碼為八個互斥輸出(Y0 至 Y7)。晶片內建三個使能輸入(E1、E2、E3),僅在 E1、E2 為低電位且 E3 為高電位時,輸出才會啟用。此多重使能功能可方便地進行擴充,例如與其他 74HC138 搭配可形成 1-of-32 解碼器。該元件亦可作為解多工器使用,並具備輸入箝位二極體,可搭配限流電阻以容忍高於 VCC 的輸入電壓,應用靈活。
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