Microchip SY58030U Bedienungsanleitung

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Precision Edge

®

SY58030U

Micrel, Inc.

M9999-082707

[email protected] or (408) 955-1690

ULTRA PRECISION, 400mV

DIFFERENTIAL LVPECL 4:1 MUX with 1:2

FANOUT and INTERNAL TERMINATION

Precision Edge

®

SY58030U

Rev.: DAmendment: /0

Issue Date:August 2007

DESCRIPTION

■Selects 1 of 4 differential inputs

■Provides two copies of the selected input

■Guaranteed AC performance over temperature and

voltage:

•DC-to- >10.7Gbps data rate throughput

•<340ps IN-to-Out t

pd

•<80ps t

r

/t

f

times

■Ultra low-jitter design:

•<10ps

PP

total jitter (clock)

•<1ps

RMS

random jitter

•<10ps

PP

deterministic jitter

•< 0.7ps

RMS

crosstalk-induced jitter

■Unique patended input design minimizes crosstalk

■Accepts an input signal as low as 100mV

■Unique patended input termination and V

T

pin

accepts DC-coupled and AC-coupled inputs (CML,

LVPECL, LVDS)

■400mV 100k LVPECL output swing

■Power supply 2.5V ±5% or 3.3V ±10%

■–40°C to +85°C temperature range

■Available in 32-pin (5mm

××

××

× 5mm) MLF

®

package

FEATURES

APPLICATIONS

■Redundant clock and/or data distribution

■All SONET/SDH clock/data distribution

■Loopback

■All Fibre Channel distribution

■All Gigabit Ethernet clock and/or data distribution

The SY58030U is a 2.5V/3.3V precision, high-speed, 4:1

differential multiplexer with 400mV LVPECL outputs, capable

of handling clocks up to 7GHz and data streams up to

10.7Gbps. In addition, a 1:2 fanout buffer provides two copies

of the selected input.

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

termination architecture that allows customers 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 result is a clean, stub-free, low-jitter

interface solution. The outputs are 400mV LVPECL (100K

temperature compensated) with extremely fast rise/fall times

guaranteed to be less than 80ps.

The SY58030U 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 SY58028U. For 800mV

LVPECL outputs, consider the SY58029U. The SY58030U 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.

TYPICAL PERFORMANCE

Precision Edge is a registered trademark of Micrel, Inc.

Micro

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

Precision Edge

®

FUNCTIONAL BLOCK DIAGRAM

IN0

/IN0

V

T0

50Ω

50Ω

IN1

/IN1

V

T1

50Ω

50Ω

Q0

/Q0

0

1

MUX

4:1 MUX

1:2 Fanout

V

REF-AC0

IN2

/IN2

V

T2

50Ω

50Ω

V

REF-AC2

V

REF-AC1

2

IN3

/IN3

V

T3

50Ω

50Ω

V

REF-AC3

3

SEL0 (CMOS/TTL)

SEL1 (CMOS/TTL)

Q1

/Q1

2.5Gbps Output (2

23

–

1 PRBS)

TIME (100ps/div.)

Output Swing

(100mV/div.)

Produktspezifikationen