July 2019

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• www.diodes.com

UX22/UX252

Document Number DS42057 Rev 2-2

© Diodes Incorporated

2.5V/3.3V LVPECL XO

The World's Smallest Ultra Low Jitter Crystal Oscillator

2.5 x 2.0mm

UX22/UX252

A product Line of

Diodes Incorporated

Product Features

• Ultra low phase jitter for 40G/100G systems

- 0.1 to 0.2ps RMS max. (12kHz to 20MHz),

Category 1

- 0.3ps RMS max. (12kHz to 20MHz), Category 2

• Industrial Temperature Range

• Pb-free & RoHS compliant

Product Description

The UX22/UX252 XO series is the world's

smallest crystal oscillator family optimized

to save board space. The series consists of

high performance LVPECL crystal oscillators

with ultra low jitter performance to meet strict

chipset requirements. It supports various options

including wider frequency range, 2.5V/3.3V

voltage, and various stabilities. It is designed

to meet the clock source specifications for

communication systems, and other high

performance equipment.

Applications

• Networking Systems

• Servers and Storage Systems

• Profession Video Equipment

• Test and Measurement

• FPGA/ASIC Clock Generation

Pin Functions:

Pin

Function

1

OE

2

NC

3

VEE

4

Output

5

Output N

6

VCC

Recommended Land Pattern:

2.5 x 2.0mm Ceramic SMD

*Extended high frequency power

decoupling is recommended (see test

circuit for minimum recommendation).

To ensure optimal performance, do not

route RF traces beneath the package.

1

2.0 ± 0.2

2.5 ± 0.2

0.8 ± 0.1

0.55 TYP.

1.72 TYP.

#1

#2

#4

#3

0.35 TYP.

0.50 TYP.

0.70 TYP.

#5

#6

0.70

1.50

2.70

0.60

Package: (Scale: none; dimensions are in mm)

UX 252 V I FFFF.FFFFFF

A

B

C

B = ±25 ppm -20 to +70°C

C = ±50 ppm -20 to +70°C

D = ±25 ppm -40 to +85°C

E = ±50 ppm -40 to +85°C

Stability and Temp Range:

Stability Temp Range

Frequency:

FFFF.FFFFFF

MHz, “4 digits/decimal/6 digits” format

Voltage:

1=+3.3V

2=+2.5V

Part Ordering Information Category 1*:

Part Ordering Information Category 2*:

UX22 XXX YYY

Product�Family

XXX = Frequency�Code

YYYY = Specification�Code

*Not for all frequencies in the

frequency range. Please contact

sales for details.

*Please contact us for custom requirements for your specific application needs