描述 Description

The SY89544U is a fast, low-jitter, 4:1 differential MUX with an LVDS (350mV) compatible output with guaranteed data rate throughput of 3.2Gbps over temperature and voltage.The SY89544U differential inputs include a unique, 3-pin internal termination that allows access to the termination network through a VT?pin. This feature allows the device to easily interface to different logic standards, both AC- and DC-coupled without external resistor-bias and termination networks. The result is a clean, stub-free, low-jitter interface solution.The SY89544U operates from a single 2.5V supply and is guaranteed over the full industrial temperature range (-40°C to +85°C). For applications that require a 3.3V supply, consider the SY89545L. For applications that require two differential outputs, consider the SY89546U or SY89547L. The SY89544U is part of Micrel's Precision Edge??product family.

特性 Features

? Selects among four differential inputs
? Guaranteed AC performance over temp and voltage:
? DC-to >3.2Gbps data rate throughput
? <600ps In-to-Out tpd
? <150ps tr/tf
? Ultra low-jitter design:
? <1psRMS?random jitter
? <10psPP?deterministic jitter
? <10psPP?total jitter (clock)
? <0.7psRMS?crosstalk-induced jitter
? Unique input isolation design minimizes crosstalk
? Internal input termination
? Unique input termination and VTpin accepts DCCoupled and AC-Coupled inputs (LVDS, LVPECL, CML)
? 350mV LVDS output swing
? CMOS/TTL compatible MUX select
? Power supply 2.5V ±5%
? -40°C to +85°C temperature range
? Available in 32-pin (5mm x 5mm) MLF??package

簡介

SY89544U屬于集成電路（IC）的信號開關(guān)多路復用器解碼器。由制造生產(chǎn)的SY89544U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。