SN74LVC2G157DCUR屬于集成電路（IC）的信號開關(guān)多路復(fù)用器解碼器。由美國德州儀器公司制造生產(chǎn)的SN74LVC2G157DCUR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(jì)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(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

1? Available in the Texas Instruments

NanoFree? package

? Supports 5-V VCC operation

? Inputs accept voltages to 5.5 V

? Max tpd of 6 ns at 3.3 V

? Low power consumption, 10-μA Maximum ICC

? ±24-mA Output drive at 3.3 V

? Typical VOLP (Output ground bounce)

<0.8 V at VCC = 3.3 V, TA = 25°C

? Typical VOHV (Output VOH undershoot)

>2 V at VCC = 3.3 V, TA = 25°C

? Ioff Supports live insertion, partial-power-down

mode, and back-drive protection

? Can be used as a down translator to translate

inputs from a maximum of 5.5 V down

to the VCC Level

? Latch-up performance exceeds 100 mA per

JESD 78, Class II

? ESD Protection exceeds JESD 22

– 2000-V Human body model (A114-A)

– 1000-V Charged-device model (C101)

2 Applications

? Barcode scanner

? Cable solutions

? E-books

? Embedded PC

? Field transmitter: temperature or pressure sensors

? Fingerprint biometrics

? HVAC: Heating, ventilating, and air conditioning

? Network-attached storage (NAS)

? Server motherboard and PSU

? Software defined radio (SDR)

? TV: High definition (HDTV), LCD, and digital

? Video communications systems

? Wireless data access cards, headsets, keyboards,

mice, and LAN cards

3 Description

This single 2-line to 1-line data selector multiplexer is

designed for 1.65-V to 5.5-V VCC operation.

The SN74LVC2G157 device features a common

strobe (G) input. When the strobe is high, Y is low

and Y is high. When the strobe is low, a single bit is

selected from one of two sources and is routed to the

outputs. The device provides true and complementary

data.

NanoFree? package technology is a major

breakthrough in IC packaging concepts, using the die

as the package.

This device is fully specified for partial-power-down

applications using Ioff. The Ioff circuitry disables the

outputs, preventing damaging current backflow

through the device when it is powered down.