SY89113UMY Micrel Inc, SY89113UMY Datasheet

1:12 LVPECL Fanout W/ 2:1 MUX Input (I Temp, Green)

SY89113UMY

Manufacturer Part Number

SY89113UMY

Description

1:12 LVPECL Fanout W/ 2:1 MUX Input (I Temp, Green)

Manufacturer

Micrel Inc

Type

Fanout Buffer (Distribution), Multiplexerr

Series

Precision Edge®r

Datasheet

1.SY89113UMG_TR.pdf (14 pages)

Specifications of SY89113UMY

Number Of Circuits

Ratio - Input:output

2:12

Differential - Input:output

Yes/Yes

Input

CML, CMOS, HSTL, LVDS, LVPECL, TTL

Output

LVDS

Frequency - Max

1GHz

Voltage - Supply

2.375 V ~ 2.625 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

44-MLF®, QFN

Frequency-max

1GHz

Number Of Clock Inputs

Mode Of Operation

Differential

Output Frequency

1000MHz

Output Logic Level

LVDS

Operating Supply Voltage (min)

2.375V

Operating Supply Voltage (typ)

2.5V

Operating Supply Voltage (max)

2.625V

Package Type

MLF

Operating Temp Range

-40C to 85C

Operating Temperature Classification

Industrial

Mounting

Surface Mount

Pin Count

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

576-3236

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December 2007

General Description

The SY89113U is a 2.5V low jitter, low skew, 1:12

LVDS fanout buffer optimized for precision telecom

and enterprise server distribution applications. The

input includes a 2:1 MUX for clock switchover

applications. Unlike other multiplexers, this input

includes a unique isolation design that minimizes

channel-to-channel

distributes clock frequencies from DC to >1GHz

guaranteed over temperature and voltage. The

SY89113U incorporates a synchronous output enable

(EN) so that the outputs will only be enabled/disabled

when they are already in the LOW state.

CLK0 differential input includes Micrel's unique, 3-pin

input termination architecture that directly interfaces to

any differential signal (AC- or DC-coupled) as small as

100mV (200mV

termination resistor networks in the signal path.

CLK1 differential input includes a new version of

Micrel's unique, Any-Input architecture that directly

interfaces

(including

differential (AC- or DC-coupled) LVDS, HSTL, CML,

and LVPECL logic levels as small as 200mV

(400mV

LVDS output swing 325mV into 100 Ω with extremely

fast rise/fall time guaranteed to be less than 250ps.

The SY89113U operates from a 2.5V±5% supply and

is guaranteed over the full industrial temperature

range of -40°C to +85°C. The SY89113U is part of

Micrel's high-speed, Precision Edge

All support documentation can be found on Micrel’s

web site at:

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

). CLK1 input requires external termination.

3.3V

www.micrel.com.

with

) without any level shifting or

single-ended

logic),

crosstalk.

single-ended

TTL/CMOS

The

product line.

SY89113U

LVPECL,

logic

Fanout Buffer with 2:1 Input MUX and

2.5V Low Jitter, Low Skew 1:12 LVDS

Features

• Selects between 1 of 2 inputs, and provides 12

• Guaranteed AC performance over temperature and

• Ultra-low jitter design:

• Unique, patent-pending 2:1 input MUX provides

• CLK0 input features a unique, patent-pending input

• CLK1 accepts virtually any logic standard:

• 325mV LVDS-compatible output swing

• Power supply: 2.5V +5%

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

• Available in 44-pin (7mm x 7mm) QFN package

Applications

• Multi-processor server

• SONET/SDH clock/data distribution

• Fibre Channel distribution

• Gigabit Ethernet clock distribution

precision, low skew LVDS output copies

voltage:

– DC to >1GHz throughput

– <975ps propagation delay CLK0-to-Q

– <250ps rise/fall time

– <25ps output-to-output skew

– <1ps

– <10ps

– <1ps

– <0.7ps

superior isolation to minimize channel-to-channel

crosstalk

termination and VT pin that accepts AC- and DC-

coupled inputs (CML, LVPECL, LVDS)

– Single-ended: TTL/CMOS (including 3.3V logic),

– Differential: LVPECL, LVDS, CML, HSTL

LVPECL

Internal Termination

RMS

SY89113U

cycle-to-cycle jitter

total jitter (clock)

random jitter

crosstalk induced jitter

hbwhelp@micrel.com

Precision Edge

or (408) 955-1690

M9999-120607

Related parts for SY89113UMY

SY89113UMY Summary of contents

Page 1

... 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 December 2007 2.5V Low Jitter, Low Skew 1:12 LVDS ...

Page 2

Micrel, Inc. Functional Block Diagram December 2007 2 hbwhelp@micrel.com SY89113U M9999-120607 or (408) 955-1690 ...

Page 3

... Micrel, Inc. (1) Ordering Information Part Number Package Type SY89113UMY QFN-44 (2) SY89113UMYTR QFN-44 Notes: 1. Contact factory for die availability. Dice are guaranteed Tape and Reel. Pin Configuration Truth Table Note: 1. Transition occurs on next negative transition of the non-inverted input. December 2007 Operating Package Marking ...

Page 4

Micrel, Inc. Pin Description Pin Number Pin Name GND 11, 22, 34 Exposed Pad CLK0, /CLK0 VT0 4 VREF-AC0 7 SE-TERM 8, 10 CLK1, /CLK1 9 VBB1 12 EN 13, 23, 28, VCC 33, 43 ...

Page 5

Micrel, Inc. Absolute Maximum Ratings Supply Voltage (V ) .......................... –0.5V to +4.0V CC Input Voltage (Differential Input CLK0, CLK1 Current on Reference Voltage Outputs Source or sink current on VREF-AC0, VBB1 ..... ±2mA Termination Current Source or sink current ...

Page 6

Micrel, Inc. LVDS Outputs DC Electrical Characteristics V = +2.5V ±5 –40°C to +85° Symbol Parameter V Output Voltage Swing OUT Differential Output Voltage Swing DIFF-OUT Output Common Mode ...

Page 7

Micrel, Inc. AC Electrical Characteristics V = +2.5V ±5 –40° 85° Symbol Parameter f Maximum Operating Frequency MAX Propagation Delay CLK0-to CLK1-to-Q CLK_SEL-to-Q t Differential Propagation Delay Temperature PD Tempco Coefficient ...

Page 8

Micrel, Inc. Typical Operating Characteristics V = 2.5V, GND = 400mV Functional Characteristics V = 2.5V, GND = 400mV December 2007 = 100Ω across the output pair; T ...

Page 9

Micrel, Inc. Single-Ended and Differential Swings Figure 1a. Single-Ended Voltage Swing CLK0 Timing Diagrams /CLK CLK /Q Q CLK_SEL / /CLK CLK /Q Q December 2007 Figure 1b. Differential Voltage Swing CLK0 t PD Differential In-to-Differential Out V ...

Page 10

Micrel, Inc. Input and Output Stages Figure 2a. CLK1 Differential Input Structure CLK0 Input Interface Applications Figure 3a. LVPECL Interface (DC-Coupled) Figure 3d. CML Interface (AC-Coupled) December 2007 Figure 2b. CLK0 Differential Input Structure Figure 3b. LVPECL Interface (AC-Coupled) Figure ...

Page 11

Micrel, Inc. CLK1 Input Interface Applications Figure 4a. CML, LVDS Interface (DC-Coupled) Figure 4d. PECL Interface (AC-Coupled) December 2007 Figure 4b. CML Interface (DC-Coupled) Figure 4e. PECL Interface (Single-Ended) 11 SY89113U Figure 4c. PECL Interface (DC-Coupled) (See Single-Ended TTL/CMOS Recommended ...

Page 12

Micrel, Inc. Single-Ended TTL/CMOS Recommended Resistor Value The SY89113U can be driven by a TTL/CMOS input signal. See Figure 4f. The resistor R, in Table 1, below is calculated according to the following equation:   1  ...

Page 13

Micrel, Inc. Package Information Package Notes: 1. Package meets Level 2 moisture sensitivity classification, and is shipped in dry pack form. 2. Exposed pads must be soldered to a ground for proper thermal management. December 2007 44-Pin QFN 44-Pin QFN ...

Page 14

Micrel, Inc. 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 ...

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