SY58033U datasheet(2/9 Pages) MICREL

Part #	SY58033U

Description	ULTRA-PRECISION 1:8 fanout buffer WITH 400mV LVPECL outputs

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Manufacturer	MICREL [Micrel Semiconductor]

Direct Link	http://www.micrel.com

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2

Precision Edge®

SY58033U

Micrel, Inc.

M9999-072810

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

PACkAGE/ORDERING INFORMATION

Pin Number

Pin Name

Pin Function

3,6

IN,/IN

DifferentialSignalInput: Eachpinofthispairinternallyterminateswith50Ωtothe

VT pin. Note that this input will default to an indeterminate state if left open.

See “Input Interface Applications” section.

4

VT

Input Termination Center-Tap: Each input terminates to this pin. The VT pin provides a

center-tap for each input (IN, /IN) to the termination network for maximum interface

flexibility.See“InputInterfaceApplications”section.

2, 7, 17, 24

GND,

Ground. Exposed pad must be connected to a ground plane that is the same potential

Exposed Pad

as the ground pin.

1, 8, 9, 16,

VCC

Positive Power Supply: Bypass with 0.1µF||0.01µF low ESR capacitors as close to the

18, 23, 25, 32

pins as possible.

31, 30, 29, 28, 27,

Q0,/Q0, Q1,/Q1,

400mV LVPECL Differential Output Pairs: Differential buffered output copy of the

26,22,21,20,19, Q2,/Q2,Q3,/Q3 inputsignal.TheLVPECLoutputswingistypically400mVinto50Ω.Unused

15,14,13,12,

Q4,/Q4,Q5,/Q5, outputpairsmaybeleftfloatingwithnoimpactonjitter.See“LVPECLOutput”section.

11, 10

Q6, /Q6, Q7, /Q7

5

VREF-AC

Bias Reference Voltage: Equal to VCC–1.2V (approx.), and used for AC-coupled

applications. See “Input Interface Applications” section. When using VREF-AC, bypass

with 0.01µF capacitor to VCC. Maximum sink/source current is 0.5mA.

PIN DESCRIPTION

32-PinQFN(QFN-32)

Ordering Information(1)

Package Operating

Package

PartNumber

Type

Range

Marking

SY58033UMG(3)

QFN-32

Industrial

SY58033U with

Pb-Free

Pb-Free bar-line indicator

SY58033UMGTR(2, 3) QFN-32

Industrial

SY58033U with

Pb-Free

Pb-Free bar-line indicator

Notes:

1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC electricals only.

All devices are Pb-Free.

2. Tape and Reel.

3. Pb-Free package recommended for new designs.

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