Microchip SY89545L Bedienungsanleitung

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Precision Edge

®

SY89545L

Micrel, Inc.

M9999-060308

[email protected] or (408) 955-1690

DESCRIPTION

Selects among four differential inputs

Guaranteed AC performance over temp and voltage:

• DC-to > 3.2Gbps data rate throughput

• < 600ps In-to-Out t

pd

• < 150ps t

r

/t

f

Ultra-low jitter design:

• < 1ps

RMS

random jitter

• < 10ps

PP

deterministic jitter

• < 10ps

PP

total jitter (clock)

• < 0.7ps

RMS

crosstalk-induced jitter

Unique input isolation design minimizes crosstalk

Internal input termination

Unique input termination and V

T

pin accepts DC-

coupled and AC-coupled inputs (LVDS, LVPECL,

CML)

350mV LVDS output swing

CMOS/TTL compatible MUX select

Power supply 3.3V +10%

–40°C to +85°C temperature range

Available in 32-pin (5mm x 5mm) MLF

®

package

FEATURES

APPLICATIONS

SONET/SDH channel select applications

Fiber Channel multi-channel select applications

Gigabit Ethernet multi-channel select

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Rev.: DAmendment: /0

Issue Date:June 2008

The SY89545L is a fast, low jitter 4:1 differential MUX

with an LVDS (350mV) compatible output with guaranteed

data rate throughput of 3.2Gbps over temperature and

voltage.

The SY89545L differential inputs include a unique, 3-pin

internal termination that allows access to the termination

network through a V

T

pin. This feature allows the device to

easily interface 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 SY89545L operates from a single 3.3V supply, and

is guaranteed over the full industrial temperature range

(–40°C to +85°C). For applications that require a 2.5V supply,

consider the SY89544U. For applications that require two

differential outputs, consider the SY89546U or

SY89545L.The SY89545L is part of a Micrel’s Precision

Edge

®

product family. All support documentation can be

found on Micrel’s web site at www.micrel.com.

TYPICAL PERFORMANCE

FUNCTIONAL BLOCK DIAGRAM

Precision Edge

®

IN0

/IN0

V

T0

50Ω

50Ω

IN1

/IN1

V

T1

50Ω

50Ω

Q

/Q

0

1

MUX

4:1 MUX

LVDS

IN2

/IN2

V

T2

50Ω

50Ω

2

IN3

/IN3

V

T3

50Ω

50Ω

3

S0

S1

SEL0

SEL1

Precision Edge is a registered trademark of Micrel, Inc.

Micro

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

0

50

100

150

200

250

300

350

400

0123456

OUTPUT AMPLITUDE (mV)

FREQUENCY (GHz)

Output Amplitude

vs. Frequency

3.3V, 3.2Gbps DIFFERENTIAL

4:1 LVDS MULTIPLEXER with

INTERNAL INPUT TERMINATION

Precision Edge

®

SY89545L

Produktspezifikationen