SY89855UMG Micrel Inc, SY89855UMG Datasheet

IC,ANALOG MUX,QUAD,2-CHANNEL,LLCC,32PIN,PLASTIC

SY89855UMG

Manufacturer Part Number

SY89855UMG

Description

IC,ANALOG MUX,QUAD,2-CHANNEL,LLCC,32PIN,PLASTIC

Manufacturer

Micrel Inc

Type

Multiplexerr

Series

SY89r

Datasheet

1.SY89855UMG.pdf (13 pages)

Specifications of SY89855UMG

Circuit

1 x 4:1

Independent Circuits

Voltage Supply Source

Single Supply

Voltage - Supply

3 V ~ 3.6 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

32-MLF®, QFN

Number Of Clock Inputs

Mode Of Operation

Differential

Output Logic Level

LVPECL

Operating Supply Voltage (min)

2.375V

Operating Supply Voltage (typ)

2.5/3.3V

Operating Supply Voltage (max)

3.6V

Package Type

MLF

Operating Temp Range

-40C to 85C

Operating Temperature Classification

Industrial

Signal Type

CML/LVDS/LVPECL

Mounting

Surface Mount

Pin Count

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current - Output High, Low

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

576-2101-5
SY89855UMG

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

SY89855UMG-TR

Manufacturer:

MICROCHIP/微芯

Quantity:

20 000

Current page: 1 of 13
Download datasheet (561Kb)

General Description

The SY89855U is a 2.5V/3.3V precision, high-speed,

4:1 differential multiplexer with 100K LVPECL (800mV)

compatible outputs, capable of handling clocks up to

2.5GHz and data streams up to 2.5Gbps. In addition, a

1:2 fanout buffer provides two copies of the selected

inputs.

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

input termination architecture that allows customers to

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

as small as 100mV without any level shifting or

termination resistor networks in the signal path. The

result is a clean, stub-free, low-jitter interface solution.

The outputs are 800mV LVPECL, (100K temperature

compensated) with fast rise/fall times guaranteed to be

less than 180ps.

The SY89855U operates from a 2.5V ±5% supply or a

3.3V ±10% supply and is guaranteed over the full

industrial temperature range of –40°C to +85°C. For

applications that require higher performance, consider

the SY58029U. The SY89855U is part of Micrel’s high-

speed, Precision Edge

All support documentation can be found on Micrel’s web

site at www.micrel.com.

Typical Performance

August 2007

Precision Edge is a registered trademark of Micrel, Inc.

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

product line.

Precision Low Power Differential LVPECL 4:1

Features

• Select 1 of 4 differential inputs

• Provides two copies of the selected input

• Low power 260mW (V

• Guaranteed AC performance over temperature and

• Ultra low-jitter design:

• Unique, patent-pending input design minimizes

• Accepts an input signal as low as 100mV

• Unique patented input termination and VT pin

• 800mV 100K LVPECL output swing

• Power supply 2.5V ±5% or 3.3V ±10%

• –40°C to +85°C temperature range

• Available in 32-pin (5mm x 5mm) QFN package

Applications

• Redundant clock and/or data distribution

• All SONET/OC-3 to OC-48 clock/data distribution

• Loopback

• All Fibre Channel applications

• All GigE applications

Markets

• LAN/WAN communication

• Enterprise servers

• ATE

• Test and measurement

voltage:

– DC-to->2.5Gbps data rate throughput

– <410ps In-to-Q t

– <180ps t

– <10ps

– <1ps

– <10ps

– <0.7ps

crosstalk

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

LVDS)

MUX with 1:2 Fanout and Internal

RMS

total jitter (clock)

deterministic jitter

random jitter

/ t

crosstalk-induced jitter

SY89855U

times

Termination

hbwhelp@micrel.com

= 2.5V)

M9999-082907-C

or (408) 955-1690

Precision Edge

Related parts for SY89855UMG

SY89855UMG Summary of contents

Page 1

... Typical Performance Precision Edge is a registered trademark of Micrel, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com August 2007 SY89855U Precision Low Power Differential LVPECL 4:1 ...

Page 2

Micrel, Inc. Functional Block Diagram Truth Table SEL1 August 2007 SEL0 SY89855U Q IN0 Input Select IN1 Input Select IN2 Input Select IN3 Input Select M9999-082907-C hbwhelp@micrel.com or (408) 955-1690 ...

Page 3

... Micrel, Inc. (1) Ordering Information Part Number Package Type SY89855UMG QFN-32 (2) SY89855UMGTR QFN-32 Notes: 1. Contact factory for die availability. Dice are guaranteed Tape and Reel. Pin Configuration Pin Description Pin Number Pin Name 1, 4 IN0, /IN0 IN1, /IN1, 25, 28 IN2, /IN2, 29, 32 ...

Page 4

Absolute Maximum Ratings Supply Voltage (V ) ............................–0.5V to +4.0V CC Input Voltage (V ) ....................................–0. LVPECL Output Current (I ) OUT Continuous................................................. ±50mA Surge ....................................................... ±100mA Termination Current Source or Sink Current on V Input Current ...

Page 5

Micrel, Inc. LVPECL Output DC Electrical Characteristics V = 2.5V ±5% or 3.3V ±10 Symbol Parameter V Output High Voltage OH (Q, /Q) V Output Low Voltage OL (Q, /Q) V Output Voltage Swing OUT (Q, /Q) ...

Page 6

Micrel, Inc. AC Electrical Characteristics V = 2.5V ±5% or 3.3V ±10 Symbol Parameter f Maximum Operating Frequency MAX t Propagation Delay pd IN-to-Q SEL-to-Q t Differential Propagation Delay pd Tempco Temperature Coefficient t Output-to-Output SKEW Part-to-Part ...

Page 7

Micrel, Inc. Typical Operating Characteristics V = 2.5V, GND = 100mV August 2007 = –40° 85° 50Ω SY89855U –2V, unless otherwise stated. CC M9999-082907-C hbwhelp@micrel.com ...

Page 8

Micrel, Inc. Functional Characteristics V = 3.3V ±10 –40° 85° August 2007 = 50Ω –2V, unless otherwise stated SY89855U M9999-082907-C hbwhelp@micrel.com or (408) 955-1690 ...

Page 9

Micrel, Inc. Single-Ended and Differential Swings Figure 1a. Single-Ended Voltage Swing Timing Diagram August 2007 Figure 1b. Differential Voltage Swing IN-to-Q Timing Diagram SEL-to-Q Timing Diagram 9 SY89855U M9999-082907-C hbwhelp@micrel.com or (408) 955-1690 ...

Page 10

Micrel, Inc. Input and Output Stages Figure 2a. Simplified Differential Input Stage Input Interface Applications Figure 3a. LVPECL Interface (DC-Coupled) Figure 3d. CML Interface (AC-Coupled) August 2007 option: may connect Figure 3b. LVPECL Interface (AC-Coupled) Figure ...

Page 11

Micrel, Inc. Output Interface Applications LVPECL has high input impedance, very low output (open emitter) impedance, and small signal swing, which result in low EMI. LVPECL is ideal for driving 50Ω and 100Ω controlled impedance transmission lines. There are different ...

Page 12

Package Information (Always solder, or equivalent, the exposed pad to the PCB) August 2007 32-Pin QFN PCB Thermal Consideration for 32-Pin QFN Package Packages Notes: 1. Package meets Level 2 Moisture Sensitivity Classification. 2. All parts are dry-packed before shipment. ...

Page 13

MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http:/www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is ...

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