Datasheet > SY54020R

SY54020R

更新时间： 2023-12-06 20:11:26

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
14页	550K
描述
The SY54020R is a fully differential, low voltage 1.2V/1.8V/2.5V CML 1:4 Fanout Buffer with active

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SY54020R 数据手册

SY54020R

Low Voltage 1.2V/1.8V/2.5V CML 1:4 Fanout

Buffer with /EN and Fail-Safe Input

3.2Gbps, 2.5GHz

General Description

The SY54020R is a fully differential, low voltage

1.2V/1.8V/2.5V CML 1:4 Fanout Buffer with active-low

Enable (/EN) and Fail-Safe Input (FSI). The Enable is

synchronous so that the outputs will only be

enabled/disabled when they are already in the LOW

state. This avoids any chance of generating a runt clock

pulse when the device is enabled/disabled as can

happen with an asynchronous control. When this device

is used as a clock fanout, disabling the downstream

clock may reduce system power. FSI is a special circuit

designed to sense the amplitude of the input signal and

to latch the output when an invalid or no signal is

present at the input. The SY54020R can process clock

signals up to 2.5 GHz or data patterns up to 3.2Gbps.

Precision Edge^®

Features

• 1.2V/1.8V/2.5V CML 1:4 Fanout Buffer with FSI

• Active-low Enable (/EN) input to disable the outputs

• Guaranteed AC performance over temperature and

voltage:

– DC-to > 3.2Gbps Data throughput

– DC-to > 2.5GHz Clock throughput

– <400 ps propagation delay (IN-to-Q)

– <20ps within-device skew

– <100 ps rise/fall times

• Ultra-low jitter design

– <1ps_RMScycle-to-cycle jitter

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

input termination architecture that interfaces to LVPECL,

LVDS or CML differential signals as small as 100mV

(200mV_pp) without any level-shifting or termination

resistor networks in the signal path. For AC-coupled

input interface applications, an internal voltage

reference is provided to bias the V_Tpin. The outputs are

CML, with extremely fast rise/fall times guaranteed to be

less than 100ps.

• High-speed CML outputs

• 2.5V ±5% V_CC, 1.2/1.8V/2.5V ±5% V_CCOpower supply

operation

• Industrial temperature range: –40°C to +85°C

• Available in 16-pin (3mm x 3mm) MLF^®package

Applications

The SY54020R operates from a 2.5V ±5% core supply

and a 1.2V, 1.8V or 2.5V ±5% output supply and is

guaranteed over the full industrial temperature range

(–40°C to +85°C).

• SONET clock and data distribution

• Fibre Channel clock and data distribution

• Gigabit Ethernet clock and data distribution

Datasheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

Markets

• Storage

• ATE

Functional Block Diagram

• Test and measurement

• Enterprise networking equipment

• High-end servers

• Access

• Metro area network equipment

Precision Edge is a registered trademark of Micrel, Inc.

MLF and MicroLeadFrame are registered trademarks of Amkor Technology.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

M9999-041409-A

hbwhelp@micrel.com or (408) 955-1690

April 2009

12 3 4 5 6 7...14

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与SY54020R相关器件

型号	品牌	描述	获取价格	数据表
SY54020R_09	MICREL	Low Voltage 1.2V/1.8V/2.5V CML 1:4 Fanout Buffer with /EN and Fail-Safe Input 3.2Gbps	获取价格
SY54020RMG	MICREL	Low Voltage 1.2V/1.8V/2.5V CML 1:4 Fanout Buffer with /EN and Fail-Safe Input 3.2Gbps	获取价格
SY54020RMG	MICROCHIP	S SERIES, LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), QCC16	获取价格
SY54020RMGTR	MICREL	Low Voltage 1.2V/1.8V/2.5V CML 1:4 Fanout Buffer with /EN and Fail-Safe Input 3.2Gbps	获取价格
SY54020RMG-TR	MICROCHIP	S SERIES, LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), QCC16	获取价格
SY54023AR	MICREL	Low Voltage 1.2V/1.8V CML 2x2 Crosspoint Switch 3.2Gbps, 3.2GHz	获取价格

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