Microchip SY89546U Bedienungsanleitung

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SY89546U

Features

•Selects Among Four Differential Inputs

•Provides Two Copies of the Selected Input

•Guaranteed AC Parameters Over Temp/Voltage:

-DC- to >3.2Gbps Data Rat Throughput

-<620ps In-to-Out t

PD

-<150ps t

r

/t

f

Time

-Unique Input Isolation Design Minimize

Crosstalk

•Ultra-Low Jitter Design:

-<1ps

RMS

Random Jitter

-<10ps

PP

Deterministic Jitter

-<10ps

PP

Total Jitter (Clock)

-<0.7ps

RMS

Crosstalk Induced Jitter

•Internal Input Termination

•Unique Input Termination and VT Pin Accepts DC-

Coupled and AC-Coupled Inputs (LVDS, LVPECL,

CML)

•350mV LVDS Output Swing

•Power Supply 2.5V ±5%

•–40°C to +85°C Temperature Range

•Available in 32-pin (5mm x 5mm) VQFN

Package

Applications

•SONET/SDH Multi-Channel Select applications

•Fibre Channel Applications

•GigE application

General Description

The SY89546U is a precision, high-speed 4:1

differential multiplexer that provides two copies of the

selected input. The high speed LVDS (350mV)

compatible outputs with a guaranteed throughput of up

to 3.2Gbps over temperature and voltage.

The SY89546U differential inputs include Microchip’s

unique 3-pin internal termination design 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 SY89546U 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 SY89547L. Or, for

applications that only require one differential output,

consider the SY89544U or SY89545L. The SY89546U

is part of Microchip’s Precision Edge

®

product family.

Package Type

SY89546U

5mm x 5mm VQFN-32 (M)

(Top View)

2.5V, 3.2Gbps Differential 4:1 LVDS Multiplexer with

1:2 Fanout and Internal Termination

Produktspezifikationen