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Renesas Electronics Corporation

Renesas’ Timing product portfolio has been acquired by SiTime.

Datasheets, documentation, and sample orders remain available on Renesas.com through late 2026. For new designs, purchasing, support, and product inquiries, visit SiTime.com or send an email to [email protected]. Full transition to SiTime is expected by late 2026.

Features

  • LP-HCSL outputs; eliminate 12 resistors, save 20mm² of area
  • PCIe Gen 1–5 compliance
  • 6 OE# pins; hardware control of each output
  • Selectable PLL BW; minimizes jitter peaking in cascaded PLL topologies
  • Hardware/SMBus control of PLL bandwidth and bypass; change mode without power cycle
  • Spread spectrum compatible; tracks spreading input clock for EMI reduction
  • 100MHz PLL Mode; UPI support
  • 5mm × 5mm 40-VFQFPN package; small board footprint

Description

The 9ZXL0631E is a second-generation, enhanced-performance DB800ZL derivative. The part is a pin-compatible upgrade to the 9ZXL0631A while offering a much-improved phase jitter performance. A fixed external feedback maintains low drift for critical QPI/UPI applications.

Parameters

AttributesValue
Diff. Outputs6
Diff. Output SignalingLP-HCSL
Output Freq Range (MHz)1 - 400
Diff. Inputs1
Diff. Input SignalingHCSL
Accepts Spread Spec InputYes
Power Consumption Typ (mW)257
Supply Voltage (V)3.3 - 3.3
Output TypeLP-HCSL
Diff. Termination Resistors24
Package Area (mm²)81
Battery BackupNo
Battery SealNo
CPU Supervisory Function PORNo
Crystal Frequency TrimmingNo
Frequency Out PinNo
Inputs (#)1
Input Freq (MHz)33 - 150
FunctionZero Delay Buffer
Input TypeHCSL
Output Banks (#)1
Core Voltage (V)3.3
Output Voltage (V)0.7
Product CategoryPCI Express Clocks, Processor Clock Buffers, Zero Delay Buffers

Package Options

Pkg. TypePkg. Dimensions (mm)Lead Count (#)Pitch (mm)
VFQFPN5.0 x 5.0 x 0.9400.4

Applications

  • Servers/High-performance Computing
  • nVME Storage
  • Networking
  • Accelerators
  • Industrial Control

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