描述 Description

The NBSG72A is a high-bandwidth fully differential 2 X 2 crosspoint switch with Output Level Select (OLS) capabilities. This is a part of the GigaComm family of high performance Silicon Germanium products. The device is housed in a low profile 3 X 3 mm 16-pin QFN package.Differential inputs incorporate internal 50 Ω termination resistors and accept NECL (Negative ECL), PECL (Positive ECL), LVCMOS/LVTTL, CML, or LVDS. The OLS input is used to program the peak-to-peak output amplitude between 0 and 800 mV in five discrete steps. The SELECT inputs are single-ended and can be driven with either LVECL or LVCMOS/LVTTL input levels.

特性 Features

? Maximum Input Clock Frequency > 7 GHz Typical
? Maximum Input Data Rate > 7 Gb/s Typical
? 200 ps Typical Propagation Delay (OLS = FLOAT)
? 55/45 ps Typical Rise/Fall Times (OLS = FLOAT)
? Selectable Swing PECL Output with Operating Range: VCC = 2.375 V to 3.465 V with VEE = 0 V
? Selectable Swing NECL Output with NECL Inputs with Operating Range: VCC = 0 V with VEE = ?2.375 V to ?3.465 V
? Selectable Output Levels (0 mV, 200 mV, 400 mV, 600 mV or 800 mV Peak-to-Peak Output)
? 50 Ω Internal Input Termination Resistors
? Single?ended LVECL or LVCMOS/LVTTL Select Inputs (SELA, SELB)
? Failure management system to automatically re-route data

應(yīng)用 Application

? Interfacing between standard SDH equipment and DWDM equipment to select which lambda (wavelength) to be transmitted.
? Routing reference clocks to SERDES/Framers to support Metro Applications using MULTI-RATE devices
? Telecom/Datacom switching
? Serial digital video routing
? Fanout Buffering
? Automatic protection switching
? Automatic test protocol to verify the switch system (router) operates
? ADSL router

簡介

NBSG72A屬于集成電路（IC）的信號開關(guān)多路復(fù)用器解碼器。由制造生產(chǎn)的NBSG72A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。