1

SY58018U

Micrel, Inc.

M9999-082707

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

DESCRIPTION

Guaranteed AC performance over temperature and

voltage:

• DC to 5Gbps data throughput

• < 260ps propagation delay

Ultra-low jitter design:

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

800mV (100k) LVPECL output swing

Power supply 2.5V ±5% or 3.3V ±10%

–40°C to +85°C temperature range

Available in 16-pin (3mm

∞

∞

∞

∞

FEATURES

ULTRA-PRECISION

DIFFERENTIAL LVPECL 2:1 MUX

with INTERNAL TERMINATION

SY58018U

APPLICATIONS

Redundant clock distribution

SONET/SDH clock/data distribution

Loopback

Fibre Channel distribution

Rev.: D

Amendment: /0

Issue Date:

August 2007

The SY58018U is a 2.5V/3.3V precision, high-speed, 2:1

differential MUX capable of handling clocks up to 4GHz

and data up to 5Gbps.

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 outputs are 800mV, 100k

compatible, LVPECL, with extremely fast rise/fall times

guaranteed to be less than 110ps.

The SY58018U 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 SY58017U or for 400mV

LVPECL outputs the SY58019U. The SY58018U is part of

All support documentation can be found on Micrel’s web

site at www.micrel.com.

FUNCTIONAL BLOCK DIAGRAM

TYPICAL PERFORMANCE

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

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

Q0

/Q0

IN0

/IN0

50

Ω

50

Ω

IN1

/IN1

50

Ω

50

Ω

0

1

MUX

SEL

(TTL/CMOS)

S

5Gbps Output

TIME (25ps/div.)

(2