Microchip SY58023U Handleiding

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1

Precision Edge

®

SY58023U

Micrel, Inc.

M9999-082807

[email protected] or (408) 955-1690

DESCRIPTION

■Guaranteed AC performance over temperature and

voltage:

•>10.7Gbps data throughput

•<60ps t

r

/t

f

times

•<285ps t

pd

(IN-to-Q)

•<20ps skew

■Low jitter:

•<10ps

pp

total jitter (clock)

•<1ps

rms

random jitter (data)

•<10ps

pp

deterministic jitter (data)

■Crosstalk induced jitter:<0.7ps

rms

■Accepts an input signal as low as 100mV

■Unique input termination and V

T

pin accepts DC-

coupled and AC-coupled differential inputs:

LVPECL, LVDS, and CML

■50Ω source terminated CML outputs

■Fully differential inputs/outputs

■Power supply 2.5V ±5% and 3.3V ±10%

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

■Available in 16-pin (3mm

××

××

× 3mm) MLF

®

package

FEATURES

ULTRA-LOW JITTER 2

××

××

×2 CROSSPOINT

SWITCH w/CML OUTPUTS AND

INTERNAL I/O TERMINATION

Precision Edge

®

SY58023U

Rev.: GAmendment: /0

Issue Date:August 2007

The SY58023U is a 2.5V/3.3V precision, high-speed, fully

differential CML 2×2 crosspoint switch. The SY58023U is

optimized to provide two identical output copies with less

than 20ps of skew and ultra-low jitter. It can route clock

signals as fast as 6GHz or data up to 10.7Gbps.

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

termination architecture that allows the SY58023U to directly

interface to LVPECL, LVDS, and CML differential signals

(AC- or DC-coupled) as small as 100mV (200mV

pp

) without

any level-shifting or termination resistor networks in the signal

path. The CML outputs features 400mV typical swing into

50Ωloads, and provide an extremely fast rise/fall time

guaranteed to be less than 60ps.

The SY58023U operates from a +2.5V ±5% supply or

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

temperature range (–40°C to +85°C). For applications that

require high speed dual CML switches, consider the

SY58024U. The SY58023U is part of Micrel’s high-speed,

Precision Edge

®

product line.

Datasheets and support documentation can be found on

Micrel’s website at www.micrel.com.

Precision Edge is a registered trademark of Micrel , Inc.

Micro

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

Precision Edge

®

IN0

/IN0

Q1

/Q1

Q0

/Q0

V

T0

50Ω

50Ω

IN1

/IN1

V

T1

50Ω

50Ω

SEL0

(TTL/CMOS)

SEL1

(TTL/CMOS)

0

1

0

1

FUNCTIONAL BLOCK DIAGRAM

APPLICATIONS

■Gigabit Ethernet data/clock routing

■SONET data/clocking routing

■Switch fabric clock routing

■Redundant switchover

■Backplane redundancy

Product specificaties