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11 Outputs HiFlex™ Ethernet Network Clock Generator

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The PI6LC58S1101 is very low jitter clock generator target for applications that demand extremely low phase noise, such as 10GbE, 40GbE, 100GbE, and 400GbE. It uses Diodes' proprietary LC VCO-based PLL design to achieve an optimum combination of those popular networking clock frequencies and low phase noise performance along with high power supply noise rejection.

The PI6LC58S1101 has four output banks which can be configured independently for different frequencies and different output signaling types based on control pins. The pin control method provides an easy way to configure the device at the hardware level.


  • 3.3V Supply Voltage
  • Crystal/CMOS Input: 25MHz/50MHz
  • Differential Input: 25MHz/50MHz
  • Selectable Output Frequencies
  • Four Output Banks with Selectable Output Signaling: LVPECL or LVDS
  • Very low RMS Phase jitter: 0.08ps (typ.), 156.25MHz (10kHz to 20MHz)
  • Excellent phase noise: -145dBc/Hz, 156.25MHz at 100kHz offset
  • Power Supply Noise Rejection: -55dBc
  • Industrial Temperature Support: -40°C to 85°C
  • Totally Lead-Free & Fully RoHS Compliant 
  • Halogen and Antimony Free. “Green” Device 
  • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/
  • Packaging (Pb-free & Green): 64-lead 9mm × 9mm TQFN

Product Specifications

Product Parameters

Supply Voltage (V) 3.3
Jitter RMS (ps) 0.08
Skew (PS) N/A
Output Frequency (MHz) 25, 50, 125, 156.25, 312.5MHz
Input Type(s) Crystal
Output Type(s) LVPECL, LVDS
Number of Outputs 11
Supported Frequencies (MHz) 25, 50, 125, 156.25, 312.5
Ambient or Junction Temperature (°C) - 40 to 85C

Related Content




Technical Documents

Recommended Soldering Techniques


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

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Orderable Part Number Status Package Environmental Compliance Packing Buy from Distributor /
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Qty. Carrier
PI6LC58S1101ZDIEX Active V-QFN9090-64 TPGP 3000 T&R


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Mouser Electronics Inc. 499 11/26/2022 South America, North America, Asia, Europe, Middle East Buy Now
Digi-Key Electronics 2900 11/25/2022 Europe, Asia, North America Buy Now
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Environmental Compliance Legend:
LFF: Pb-Free Finish and RoHS 5/6
TLFP: Totally Pb-Free Product and RoHS 6/6
LFGP: Pb-free Finish and Green Product, RoHS 5/6 and Halogen Free
TPGP: Totally Pb-Free and Green Product, RoHS 6/6 and Halogen Free
GREEN: Halogen-free and RoHS compliant
RoHS: RoHS compliant but NOT halogen-free


Related Application FAQs

Related Protocol FAQs

PI6LC58S1101 FAQs

What is HiFlex® clock IC?

PI6LCxxxx is Pericom's newly developed high frequency, very low jitter clock generator family, which use high Q silicon VCO to dramatically reduce traditional PLL clock jitter. They are especially good for Telecom, Datacom, and Ethernet for phase jitter <=1 ps designs.  HiFlex Clock FInder tool

What is LVPECL clock and its termination?

LVPECL is Low Voltage Positive (supply) Emitter Couple Logic. Its voltage level is around 2V+/-400mV and the most use termination is 150 ohm pull-down at output pin and AC or DC coupling to an equivalent 100 ohm across pair at RX ASIC side. Check ASIC datasheet  to prevent double termination.