sy89221u Micrel Semiconductor, sy89221u Datasheet

sy89221u

Manufacturer Part Number

sy89221u

Description

Precision 1 15 Lvpecl Fanout Buffer With 2 1 Mux And Four ?1/?2/?4 Clock Divider Output Banks

Manufacturer

Micrel Semiconductor

Datasheet

1.SY89221U.pdf (17 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

BOSTOCK HK LIMITED

Part Number:

sy89221uHY

Manufacturer:

Micrel Inc

Quantity:

10 000

Current page: 1 of 17
Download datasheet (829Kb)

General Description

The SY89221U is a 2.5/3.3V precision, high-speed,

integrated clock divider and LVPECL fanout buffer

capable of handling clocks up to 1.5GHz. Optimized

for

independently controlled output banks are phase-

matched and can be configured for pass through ÷1,

÷2 or ÷4 divider ratios.

The differential input includes Micrel’s unique, 3-pin

input termination architecture that allows the user to

interface to any differential signal (AC- or DC-coupled)

as small as 100mV (200mV

shifting or termination resistor networks in the signal

path. The low-skew, low-jitter outputs are LVPECL

compatible with extremely fast rise/fall times that are

guaranteed to be less than 220ps.

The /MR (master reset) input asynchronously resets

the outputs. A four-clock delay after de-asserting /MR

allows the counters to synchronize and start the

outputs from the same state without any runt pulse.

The SY89221U is part of Micrel’s Precision Edge

product family. All support documentation can be

found at Micrel's web site at: www.micrel.com.

Precision Edge is a registered trademark of Micrel, Inc.

August 2007

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (

communications

applications,

) without any level

the

four

Precision 1:15 LVPECL Fanout Buffer with

2:1 MUX and Four ÷1/÷2/÷4 Clock Divider

408

Features

• Four low-skew LVPECL output banks with

• Four output banks, 15 total outputs

• Guaranteed AC performance over temperature and

• Fail Safe Input

• Ultra-low jitter design:

• Patent-pending input termination and VT pin

• CMOS/TTL-compatible output enable (EN) and

• 2.5V ±5% or 3.3V ±10% power supply

• –40°C to +85°C temperature range

• Available in 64-pin TQFP

Applications

• All SONET/SDH applications

• All Fibre Channel applications

• All Gigabit Ethernet applications

Markets

• LAN/WAN routers/switches

• Enterprise servers

• Storage

• ATE

• Test and measurement

) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

independently programmable ÷1, ÷2 and ÷4 divider

options

voltage:

– Accepts a clock frequency up to 1.5GHz

– <1600ps IN-to-OUT propagation delay

– <270ps rise/fall time

– <35 ps within-bank skew

– Prevents outputs from oscillating

– <1ps

– <10ps

accepts DC- and AC-coupled inputs (CML, PECL,

LVDS)

divider select control

RMS

random jitter

total jitter (clock)

Output Banks

SY89221U

hbwhelp@micrel.com

or (408) 955-1690

M9999-082407-C

Related parts for sy89221u

Related keywords

sy89221u datasheet
sy89221u data sheet
sy89221u pdf datasheet
sy89221u component
sy89221u part
sy89221u distributor
sy89221u RoHS
sy89221u datasheet download