Description

The NX254 XO series is a high performance HCSL crystal oscillator family with very low jitter performance. Other than PCIe clock frequencies, it also supports various options including other Networking frequencies, 2.5V/3.3V voltage, and various stabilities.

It is designed to meet the clock source specifications for PCIe interface, SGMII of communication systems, and other high performance equipment.

Application(s)

Networking systems
Servers and storage systems
Professional video equipment
Test and measurement
FPGA/ASIC clock generation

Feature(s)

Meets PCIe Gen2, Gen3, and Gen4 clock requirements at 100MHz
Very low phase jitter - < 1.0ps RMS max.
Wide frequency range - 5 ~ 212.5MHz
Thicker crystal for improved reliability
Low supply current - 70mA max.
Industrial Temperature Range
Pb-free & RoHS compliant
Fast lead time

Specifications & Technical Documents

Product Parameters

Subfamily	Programmable XO
Product Series	NX2
Freq Range (MHz)	5 to 212.5
Jitter RMS (ps)	<1ps
Compliance (Only Automotive Supports PPAP)	Standard
Stability (PPM)	20 to 50
Package Size (mm)	2.5x2.0x0.9
PkgType	Ceramic Seam
Output Logic	HCSL
Supply Voltage (V)	3.3, 2.5
Pads	6

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Additional Technical Documents are available upon request:
Application information, Evaluation board, and Other technical documents

Request Documents

Purchase & Availability

Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2770	2025-10-30	2025-10-30	Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products

NX254