Abracon | ClearClock® LP-HCSL SMD XOs: Low-Power, High Performance,…


This is an extension of our ClearClock® line of products. They are low-power HCSL SMD XOs available in industry standard 3.2 x 2.5mm and 2.5 x 2.0mm package sizes. They are capable of typical supply currents as low as 12-15mA.

Low-Power HCSL (LP-HCSL) was initially developed to minimize the power consumption associated with traditional HCSL drivers. However, LP-HCSL offers a range of additional benefits, including enhanced performance when driving lengthy traces, simplified AC-coupling, reduced demands onboard space, easier routing on the board, and a reduction in the Bill of Material (BOM) costs. Notably, it's important to highlight that an HCSL receiver cannot differentiate between a traditional HCSL driver and an LP-HCSL driver. Additionally, this product has integrated termination resistors and requires no external components, making it ideal for PCIe applications. LP-HCSL not only delivers substantial power savings but also excels in driving extended traces, conserving board real estate, cutting BOM expenses, and facilitating the handling of AC-coupled transmission lines.


  • Widest temp range: -40ºC to +85ºC
  • Tightest tolerance: ±25ppm
  • 1.8V ,2.5V, 3.3V, 1.71V to 3.63V Continuous Supply Voltage Options


Exceptionally Low RMS Jitter: 117fs Typ

Available in Industry Standard Frequencies between 100MHz & 156.25MHz

Industry Standard 3.2 x 2.5 x 1.0 mm and 2.5 x 2.0 x 1.0 mm footprints

Based on 3rd Overtone, Quartz Crystal Technology

Output Enable (Pad 1 or Pad 2 Active High) Options Available


Optical Transceivers and Modules

Data Centers, Storage, and Servers

Networking Switches and Gateways

100G/200G/400G/800G Ethernet

Fibre Channel/SONET/SDH/PCIe

Industrial and FPGA Applications

Test & Measurement


Series Solution Type Output Jitter Package Size Frequency Frequency Stability Options Inventory
AK2LP ClearClock XO HCSL 117fs RMS 2.5 x 2.0 x 1.0mm 100 - 156.25 MHz ±15 / ±20 / ±25 ppm Check Inventory
AK3LP ClearClock XO HCSL 117fs RMS 3.2 x 2.5 x 1.0mm 100 - 156.25 MHz ±15 / ±20 / ±25 ppm Check Inventory

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