SN74AHC157集成電路（IC）的信號(hào)開(kāi)關(guān)多路復(fù)用器解碼器規(guī)格書(shū)PDF中文資料

SN74AHC157屬于集成電路（IC）的信號(hào)開(kāi)關(guān)多路復(fù)用器解碼器。由德州儀器制造生產(chǎn)的SN74AHC157信號(hào)開(kāi)關(guān)，多路復(fù)用器，解碼器邏輯型信號(hào)開(kāi)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(lèi)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(wú)窮變化量。

1 Features

? AEC-Q100 qualified for automotive applications:

– Device temperature grade 1: -40°C to +125°C

– Device HBM ESD classification level 2

– Device CDM ESD classification level C4B

? Available in wettable flank QFN package

? Operating range 2V to 5.5V VCC

? Low delay, 12ns (VCC = 5V, CL = 50pF

? Latch-up performance exceeds 250mA

per JESD 17

2 Applications

? Memory device selection with shared data bus

? Reduce required number of outputs for chip select

applications

? Route data

3 Description

The SN74AHC157-Q1 is a quadruple 2-line to 1-line

data selectors/multiplexers are designed for 2-V to

5.5-V VCC operation. The SN74AHC157-Q1 devices

feature 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 device provides true

data.