SN74F157A屬于集成電路（IC）的信號開關(guān)多路復用器解碼器。由美國德州儀器公司制造生產(chǎn)的SN74F157A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(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。

? Buffered Inputs and Outputs

? Package Options Include Plastic

Small-Outline Packages, Ceramic Chip

Carriers, and Standard Plastic and Ceramic

300-mil DIPs

description

The ′F157A is a quadruple 2-input data

selector/multiplexer featuring a common strobe

(G) input. When the strobe is high, all outputs are

low. When the strobe is low, a 4-bit word is

selected from one of two sources and is routed to

the four outputs. The ′F157A provides true data.

The SN54F157A is characterized for operation

over the full military temperature range of ?55°C

to 125°C. The SN74F157A is characterized for

operation from 0°C to 70°C.