1

SY58026U

Micrel, Inc.

M9999-082707

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

DESCRIPTION

Two independent differential 2:1 multiplexers

Guaranteed AC performance over temperature and

voltage:

• DC-to >5Gbps data rate throughput

Unique, patent-pending input isolation design

minimizes crosstalk

Ultra-low jitter design:

Unique, patent-pending 50ý input termination and

VT pin accepts DC-coupled and AC-coupled inputs

(CML, LVDS, PECL)

800mV LVPECL output swing

Power supply 2.5V ±5% or 3.3V ±10%

–40°C to +85°C temperature range

Available in 32-pin (5mm

∞

∞

∞

∞

FEATURES

ULTRA PRECISION DUAL 2:1 LVPECL

MUX WITH INTERNAL TERMINATION

SY58026U

APPLICATIONS

Data communication systems

SONET applications

Fibre Channel applications

GigE applications

Rev.: E

Amendment: /0

Issue Date:

August 2007

The SY58026U features two ultra-fast, low jitter 2:1

differential muxes with a guaranteed maximum data

throughput of 5Gbps.

The SY58026U differential inputs include a unique

internal termination design that allows access to the

termination network through a VT pin. The device easily

interfaces to different logic standards, both AC- and DC-

coupled, without external resistor-bias and termination

networks. The result is a clean, stub-free, low jitter interface

solution. The differential 800mV LVPECL outputs have

extremely fast rise/fall times guaranteed to be less than

110ps.

The SY58026U operates from a 2.5V or 3.3V supply,

and is guaranteed over the full industrial temperature range

(–40°C to +85°C). The SY58026U is part of Micrel’s Precision

All support documentation can be found on Micrel’s web

site at www.micrel.com.

FUNCTIONAL BLOCK DIAGRAM

AnyGate and Precision Edge are registered trademarks of Micrel, Inc.

MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc.

QA

/QA

INA0

/INA0

50

Ω

50

Ω

INA1

/INA1

50

Ω

50

Ω

0

1

MUX A

SELA

(TTL/CMOS)

S

QB

/QB

INB0

/INB0

50

Ω

50

Ω

INB1

/INB1

50

Ω

50

Ω

0

1

MUX B

SELB

(TTL/CMOS)

S