SY89218UHY Micrel Inc, SY89218UHY Datasheet

2.5V Integrated Divider + Fanout With 15 LVDS Outputs Asn FSI Inputs (I Temp, )

SY89218UHY

Manufacturer Part Number

SY89218UHY

Description

2.5V Integrated Divider + Fanout With 15 LVDS Outputs Asn FSI Inputs (I Temp, )

Manufacturer

Micrel Inc

Series

Precision Edge®r

Type

Fanout Buffer (Distribution), Divider, Multiplexerr

Datasheet

1.SY89218UHY.pdf (17 pages)

Specifications of SY89218UHY

Number Of Circuits

Ratio - Input:output

2:15

Differential - Input:output

Yes/Yes

Input

CML, LVDS, PECL

Output

LVDS

Frequency - Max

2GHz

Voltage - Supply

2.375 V ~ 2.625 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

64-TQFP Exposed Pad, 64-eTQFP, 64-HTQFP, 64-VQFP

Frequency-max

2GHz

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

576-1615

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

SY89218UHY

Manufacturer:

Microchip

Quantity:

828

Company:

BOSTOCK HK LIMITED

Part Number:

SY89218UHY

Manufacturer:

Micrel Inc

Quantity:

10 000

Current page: 1 of 17
Download datasheet (769Kb)

General Description

The SY89218U is a 2.5V precision, high-speed,

integrated clock divider and LVDS fanout buffer capable

of handling clocks up to 1.5GHz. Optimized for

communications applications, the four 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

or termination resistor networks in the signal path. The

low-skew, low-jitter outputs are LVDS compatible with

extremely fast rise/fall times guaranteed to be less than

200ps.

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 SY89218U is part of Micrel’s Precision Edge

product family. All support documentation can be found

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

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

) without any level shifting

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

Precision 1:15 LVDS Fanout Buffer with 2:1

Features

• Low-skew LVDS output banks with independently

• 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 accepts

• LVDS-compatible outputs

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

• 2.5V ±5% 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

• Storage

• ATE

• Test and measurement

programmable ÷1, ÷2 and ÷4 divider options

voltage:

– Accepts a clock frequency up to 1.5GHz

– <1600ps IN-to-OUT propagation delay

– <200ps rise/fall time

– <35ps within bank skew

– Prevents outputs from oscillating

– <1ps

– <10ps

DC- and AC-coupled inputs (CML, PECL, LVDS)

divider select control

RMS

random jitter

total jitter (clock)

SY89218U

hbwhelp@micrel.com

Banks

or (408) 955-1690

M9999-082407-C

Related parts for SY89218UHY

SY89218UHY Summary of contents

Page 1

... All support documentation can be found at Micrel's web site at: www.micrel.com. 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 SY89218U Precision 1:15 LVDS Fanout Buffer with 2:1 MUX and Four ÷ ...

Page 2

Micrel, Inc. Functional Block Diagram August 2007 2 hbwhelp@micrel.com SY89218U M9999-082407-C or (408) 955-1690 ...

Page 3

... Contact factory for die availability. Dice are guaranteed Tape and Reel. Pin Configuration August 2007 Operating Package Marking Type Range T64-1 Industrial SY89218UHY with Pb-Free bar-line indicator T64-1 Industrial SY89218UHY with Pb-Free bar-line indicator = 25°C, DC Electricals only. A 64-Pin EPAD-TQFP (T64-1) 3 SY89218U Lead Finish Pb-Free Matte-Sn Pb-Free Matte-Sn M9999-082407-C hbwhelp@micrel ...

Page 4

Micrel, Inc. Pin Description Pin Number Pin Name 1, 2 FSELA1, FSELA0 3, 4 FSELB1, FSELB0 15, 16 FSELC1, FSELC0 17, 18 FSELD1, FSELD0 5, 8, IN0, /IN0 11, 14 IN1, /IN1 6, 12 VT0, VT1 7, VREF-AC0, 13 VREF-AC1 ...

Page 5

Micrel, Inc. Pin Description (continued) Pin Number Pin Name 64 EN 19, 32, 49, 63 GND, Exposed Pad Function Table (1) (2, 3) /MR EN CLK_SEL ...

Page 6

Micrel, Inc. Absolute Maximum Ratings Supply Voltage (V ) ............................... –0.5V to +4.0V CC Input Voltage (V ) .......................................–0. Termination Current Source or sink current Input Current Source or sink current on IN, /IN ...

Page 7

Micrel, Inc. LVDS Outputs DC Electrical Characteristics V = +2.5V ±5 100Ω across the outputs Symbol Parameter V Output Voltage Swing (Q, /Q) OUT V Differential Output Voltage Swing DIFF_OUT |Q – /Q| V Output ...

Page 8

Micrel, Inc. AC Electrical Characteristics V = +2.5V ±5 100Ω across the outputs Symbol Parameter f Maximum Operating Frequency MAX t Differential Propagation Delay PD t Reset Recovery Time RR t Differential Propagation Delay PD ...

Page 9

Micrel, Inc. Functional Description Clock Select (CLK_SEL) CLK_SEL is an asynchronous TTL/CMOS compatible input that selects one of the two input signals. Internal 25kΩ pull-up resistor defaults the input to logic HIGH if left open. Delay between the clock selection ...

Page 10

Micrel, Inc. Single-Ended Differential Swings Figure 1a. Single-Ended Voltage Swing Timing Diagrams August 2007 Figure 1b. Differential Voltage Swing Figure 2a. Propagation Delay Figure 2b. Fail Safe Feature 10 SY89218U M9999-082407-C hbwhelp@micrel.com or (408) 955-1690 ...

Page 11

Micrel, Inc. Timing Diagrams August 2007 Figure 2c. Reset with Output Enabled 11 SY89218U M9999-082407-C hbwhelp@micrel.com or (408) 955-1690 ...

Page 12

Micrel, Inc. Timing Diagrams August 2007 Figure 2d. Enable Timing Figure 2e. Disable Timing 12 SY89218U M9999-082407-C hbwhelp@micrel.com or (408) 955-1690 ...

Page 13

Micrel, Inc. Typical Operating Characteristics V = 2.5V, GND = 0V 100mV August 2007 = 100Ω across the outputs 25°C, unless otherwise stated. M9999-082407-C hbwhelp@micrel.com or (408) 955-1690 SY89218U ...

Page 14

Micrel, Inc. Functional Characteristics V = 2.5V, GND = 0V 100mV August 2007 = 100Ω across the outputs 25°C, unless otherwise stated. M9999-082407-C hbwhelp@micrel.com or (408) 955-1690 SY89218U ...

Page 15

Micrel, Inc. Input Stage Internal Termination Input Interface Applications Figure 4a. CML Interface (DC-Coupled) Option: May connect V to VCC T Figure 4d. LVPECL Interface (AC-Coupled) August 2007 Figure 3. Simplified Differential Input Stage Figure 4b. CML Interface (AC-Coupled) Figure ...

Page 16

Micrel, Inc. LVDS Output Interface Applications LVDS specifies a small swing of 325mV typical nominal 1.2V common mode above ground. The common mode voltage has tight limits to permit large variations in the ground between and LVDS driver ...

Page 17

Micrel, Inc. Package Information 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. ...

Related keywords

SY89218UHY datasheet
SY89218UHY data sheet
SY89218UHY pdf datasheet
SY89218UHY component
SY89218UHY part
SY89218UHY distributor
SY89218UHY RoHS
SY89218UHY datasheet download