Microchip SY58035U Handleiding

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1

M9999-073010

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

DESCRIPTION

■Provides six ultra-low skew copies of the selected

input

■2:1 MUX input included for clock switchover

applications

■Guaranteed AC performance over temperature and

voltage:

•Clockfrequencyrange: DCto>4.5GHz

• <320psIN-to-OUTtpd

• <110pstr

/ tf times

• <20psskew(output-to-output)

■Ultra-low jitter design:

• 50fsRMSphasejitter(typ)

■Lowsupplyvoltageoperation: 2.5Vand3.3V

■UniqueinputterminationandVTpinacceptsDC-

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

■Uniqueinputisolationdesignminimizescrosstalk

■100KLVPECLcompatibleoutputswing

■–40°Cto+85°Ctemperaturerange

■Availablein32-pin(5mmx5mm)MLF® package

FEATURES

4.5GHz,1:6LVPECLFANOUT

BUFFERWITH2:1 MUX INPUT

AND INTERNAL TERMINATION

Precision Edge®

SY58035U

APPLICATIONS

■Redundantclockdistribution

■AllSONET/SDHclock/datadistribution

■AllFibreChanneldistribution

■AllGigabitEthernetclockdistribution

The SY58035U is a 2.5V/3.3V precision, high-speed, 1:6

fanout capable of handling clocks up to 4.5GHz. A differential

2:1 MUX input is included for redundant clock switchover

applications.

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

termination architecture that allows the device 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 outputs are LVPECL (100K,

temperature compensated), with extremely fast rise/fall times

guaranteed to be less than 110ps.

The SY58035U 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 CML outputs, consider the SY58034U or for 400mV

LVPECL outputs the SY58036U. The SY58035U is part of

Micrel’s high-speed, Precision Edge® product line.

All support documentation can be found on Micrel’s web

site at www.micrel.com.

FUNCTIONALBLOCKDIAGRAM

Precision Edge®

Q0

/Q0

Q1

/Q1

Q2

/Q2

Q3

/Q3

Q4

/Q4

Q5

/Q5

IN0

/IN0

V

T0

50Ω

50Ω

IN1

/IN1

V

T1

50Ω

50Ω

0

1

Mux

SEL

(TTL/CMOS)

S

V

REF-AC0

V

REF-AC1

2:1 Mux

1:6 Fanout

Rev.: F Amendment: /0

Issue Date: July 2010

Precision Edge is a registered trademark of Micrel, Inc.

MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc.

Product specificaties