Skip to main content
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

  • 1.8V/2.5V/3.3V flexible power rails
  • Typical 150fs RMS 12kHz to 20MHz phase jitter​
  • 5/8/12 outputs with integrated crystal options
  • 1kHz to 650MHz LVDS/LP-HCSL outputs
  • 1kHz to 200MHz LVCMOS outputs
  • Programmable hardware configuration select-pins
  • PCIe Gen 5/6/7 ready
  • Space saving packages 4mm × 4mm, 5mm × 5mm, 6mm × 6mm
  • JESD204B/C support on differential or single-ended outputs with DC-coupling or AC-coupling
  • Digital holdover and hitless switching
  • Integrated crystal option for space saving and BOM optimization
  • ITU-T G.8262 and G.82621 compliant for easy synchronized Ethernet application

Description

The RC31xxxB (RC31008B and RC31012B) are small form factor, fully integrated, low-power, high-performance jitter attenuators with network synchronization capabilities. The family supports JEDEC JESD204B/C for converter synchronization and SyncE for network-based synchronization. The RC31xxxB are ideal for driving converter circuits in wireless and wireline infrastructure, data center equipment, and instrumentation applications. The devices are members of Renesas' high-performance VersaClock® 7 family

Up to 27 configurations reusable across multiple designs may be stored in on-chip One-Time Programmable (OTP) memory or external I2C EEPROM. Redundant input is available for backup and used as a reference clock where needed.

This device is factory-configurable.
Try the Custom Part Configuration Utility.

Parameters

AttributesValue
Inputs (#)2
Input TypeLVDS, LP-HCSL, LVCMOS
Product CategoryVersaClock, IEEE 1588, Jitter Attenuators, Network Synchronization, PCI Express Clocks, Programmable Clocks
Diff. Outputs5, 8, 12
Output TypeLVDS, LP-HCSL, LVCMOS
Output Voltage (V)1.8V, 2.5V, 3.3V
Input Freq (MHz)1 - 650
Phase Jitter Typ RMS (ps)0.15
Output Freq Range (MHz)0.001 - 650
Fractional Output Dividers (#)3
Core Voltage (V)1.8V, 2.5V, 3.3V
Output Banks (#)6
Advanced FeaturesJESD204B/C, Spread Spectrum, Hitless Switching

Package Options

Pkg. TypePkg. Dimensions (mm)Lead Count (#)Pitch (mm)
LGA4.0 x 4.0 x 1.0320.4
LGA5.0 x 5.0 x 1.7400.4
LGA6.0 x 6.0 x 0.9480.4
VFQFPN5.0 x 5.0 x 0.9400.4
VFQFPN6.0 x 6.0 x 0.9480.4

Applications

  • Switches/Routers
  • Synchronous Ethernet (SyncE) equipment
  • Telecom Time Slave Clock (T-TSC) equipment
  • Jitter attenuation for 10/25/40/100/200/400 Gbps Ethernet PHYs or switches
  • Small cell for 4.5G and 5G
This device is factory-configurable.
Try the Custom Part Configuration Utility.

Applied Filters: