SY89873LMG Micrel Inc, SY89873LMG Datasheet

SY89873LMG

Manufacturer Part Number

SY89873LMG

Description

IC CLK DVDR ANY DIFF-LVDS 16MLF

Manufacturer

Micrel Inc

Series

Precision Edge®r

Type

Fanout Buffer (Distribution), Dividerr

Datasheet

1.SY89873LMG.pdf (11 pages)

Specifications of SY89873LMG

Number Of Circuits

Ratio - Input:output

1:3

Differential - Input:output

Yes/Yes

Input

CML, HSTL, LVDS, LVPECL

Output

LVDS

Frequency - Max

2GHz

Voltage - Supply

2.97 V ~ 3.63 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

16-MLF®, QFN

Frequency-max

2GHz

Function

Clock Divider

Operating Temperature (max)

85C

Operating Temperature (min)

-40C

Package Type

MLF

Pin Count

Mounting

Surface Mount

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

576-1436

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

SY89873LMG

Manufacturer:

MICREL

Quantity:

436

Company:

Meier Automation Equipment Co., Limited

Part Number:

SY89873LMG

Manufacturer:

MICREL/麦瑞

Quantity:

20 000

Current page: 1 of 11
Download datasheet (107Kb)

M9999-082407

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

Micrel, Inc.

Precision Edge is a registered trademark of Micrel, Inc.

Micro LeadFrame and MLF are registered trademarks of Amkor Technology, Inc.

FEATURES

APPLICATIONS

FUNCTIONAL BLOCK DIAGRAM

Guaranteed AC performance

• > 2.0GHz f

• > 3.0GHz f

• < 800ps t

• < 15ps within-device skew

• < 190ps rise/fall time

Low jitter design

• < 1ps

• < 10ps

Unique input termination and V

and AC-coupled inputs: any differential inputs

(LVPECL, LVDS, CML, HSTL)

Precision differential LVDS outputs

Matched delay: all outputs have matched delay,

independent of divider setting

TTL/CMOS inputs for select and reset/disable

Two LVDS output banks (matched delay)

• Bank A: Buffered copy of input clock (undivided)

• Bank B: Divided output (

3.3V power supply

Wide operating temperature range: –40

Available in 16-pin (3mm × × × × × 3mm) MLF

SONET/SDH line cards

Transponders

High-end, multiprocessor servers

REF-AC

two copies

/IN

/RESET

RMS

50Ω

Decoder

total jitter

cycle-to-cycle jitter

MAX

(matched-delay between banks)

output toggle

input

Enable

Divided

Enable

2, 4, 8

MUX

or 16

pin for DC-coupled

3.3V, 2.0GHz ANY DIFF. IN-TO-LVDS

PROGRAMMABLE CLOCK DIVIDER

FANOUT BUFFER W/ INTERNAL TERMINATION

16),

package

C to +85

/QA

QB0

/QB0

QB1

/QB1

divider accepts any high-speed differential clock input (AC- or

DC-coupled) CML, LVPECL, HSTL or LVDS and divides down

the frequency using a programmable divider ratio to create a

frequency-locked, lower speed version of the input clock. The

SY89873L includes two output banks. Bank A is an exact

copy of the input clock (pass through) with matched

propagation delay to Bank B, the divided output bank. Available

divider ratios are 2, 4, 8 and 16. In a typical 622MHz clock

system this would provide availability of 311MHz, 155MHz,

77MHz or 38MHz auxiliary clock components.

design that allows access to the termination network through

a VT pin. This feature allows the device to easily interface to

all AC- or DC-coupled differential logic standards. A V

reference is included for AC-coupled applications.

Edge

consider the SY89872U. For applications that require an

LVPECL output, consider the SY89871U.

(Bank B). In the pass-through function (Bank A) the /RESET

synchronously enables or disables the outputs on the next

falling edge of IN (rising edge of /N). Refer to the Timing

Diagram.

site at: www.micrel.com.

DESCRIPTION

TYPICAL APPLICATION

This 3.3V low-skew, low-jitter, precision LVDS output clock

The differential input buffer has a unique internal termination

The SY89873L is part of Micrel’s high-speed Precision

The /RESET input asynchronously resets the divider outputs

All support documentation can be found on Micrel’s web

622MHz LVPECL

Clock In

timing and distribution family. For 2.5V applications,

/IN

Bank B: 155.5MHz: For OC-3 line card

Bank A: 622MHz: For OC-12 line card

SONET Clock Generator

622MHz/155.5MHz

Set to pass-through

Set to divide-by-4

Clock Gen

OC-12 or

OC-3

Precision Edge

/QA

/QB

Rev.: F

Issue Date: February 2007

Precision Edge

155.5MHz LVDS

SY89873L

622MHz LVDS

Clock Out

Amendment: /0

SY89873L

REF-AC

Related parts for SY89873LMG

SY89873LMG Summary of contents

Page 1

Micrel, Inc. FEATURES Guaranteed AC performance • > 2.0GHz f output toggle MAX • > 3.0GHz f input MAX • < 800ps t (matched-delay between banks) PD • < 15ps within-device skew • < 190ps rise/fall time Low jitter design ...

Page 2

... SY89873LMI MLF-16 (2) SY89873LMITR MLF-16 (3) SY89873LMG MLF-16 (2, 3) SY89873LMGTR MLF-16 Notes: 1. Contact factory for die availability. Dice are guaranteed Tape and Reel. 3. Pb-Free package is recommended for new designs. Pin Function Differential Buffered Output Clocks: Divide 16. LVDS compatible. Differential Buffered Undivided Output Clock: LVDS compatible. ...

Page 3

Micrel, Inc. Absolute Maximum Ratings Supply Voltage (V ) .................................. –0.5V to +4.0V CC Input Voltage (V ) .................................. –0. LVDS Output Current (I ) .................................... ±10mA OUT Input Current IN, / .......................................... ±50mA IN ...

Page 4

Micrel, Inc. LVDS OUTPUT DC ELECTRICAL CHARACTERISTICS V = 3.3V ±10 –40°C to +85°C; Unless otherwise stated Symbol Parameter V Output Voltage Swing OUT V Output High Voltage OH V Output Low Voltage OL V Output ...

Page 5

Micrel, Inc. AC ELECTRICAL CHARACTERISTICS V = 3.3V ±10 –40°C to +85°C; Unless otherwise stated Symbol Parameter f Maximum Output Toggle Frequency MAX (Bank A and Bank B) Maximum Input Frequency t Differential Propagation Delay PD ...

Page 6

Micrel, Inc. LVDS OUTPUT GND Figure 1a. LVDS Differential Measurement DEFINITION OF SINGLE-ENDED AND DIFFERENTIAL SWING 350mV (Typical) Figure 1c. Single-Ended Swing TIMING DIAGRAM /RESET /IN QB /QB QA /QA M9999-082407 hbwhelp@micrel.com ...

Page 7

Micrel, Inc. TYPICAL OPERATING CHARACTERISTICS V = 3.3V 400mV 25°C, unless otherwise stated Output Amplitude vs. Frequency 350 300 250 200 150 100 500 1000 1500 2000 2500 FREQUENCY (MHz) ...

Page 8

Micrel, Inc. FUNCTIONAL CHARACTERISTICS Conditions 3.3V 25°C, unless otherwise stated 622MHz and QB @ 155.5MHz (Divided-by-4) QA /QA 622MHz QB ÷4 /QB 155MHz TIME (1ns/div.) M9999-082407 hbwhelp@micrel.com or (408) 955-1690 QA Output ...

Page 9

Micrel, Inc. INPUT BUFFER STRUCTURE V CC 1.86kΩ 1.86kΩ IN 50Ω 50Ω GND /IN Figure 2a. Simplified Differential Input Stage M9999-082407 hbwhelp@micrel.com or (408) 955-1690 1.86kΩ 1.86kΩ Figure 2b. Simplified TTL/CMOS Input 9 Precision Edge SY89873L V CC ...

Page 10

Micrel, Inc. INPUT INTERFACE APPLICATIONS CML /IN SY89873L GND REF-AC Figure 3a. DC-Coupled CML Input Interface LVPECL ...

Page 11

Micrel, Inc. ® 16-PIN MicroLeadFrame 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. MICREL, INC. 2180 FORTUNE DRIVE SAN ...

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