RC19104AGNL#BB0

Overview

The RC19104AGNL#BB0 is a Renesas Electronics PCIe Gen7 compliant clock buffer operating at 1.8V with four differential outputs. It features ultra-low additive phase jitter, specified at 2.6fs RMS for PCIe Gen7 and 33fs RMS at 156.25MHz (12kHz to 20MHz). The device accepts HCSL or LVDS input signals and provides LP-HCSL outputs with selectable differential impedances of 33Ω, 85Ω, or 100Ω via pins or SMBus. Packaged in a 28-lead VFQFPN (4x4mm) case, it supports an operating temperature range of -40°C to +105°C.

Feature Summary

• PCIe Gen7 compliance with 2.6fs RMS additive jitter
• Four LP-HCSL outputs with selectable 33Ω/85Ω/100Ω impedance
• Supports HCSL or LVDS input signal levels
• Integrated PDT, FSS, and ACP functions

Applications

• Cloud and high-performance computing systems
• NVMe storage controllers
• AI accelerator cards

Procurement Notes

Verify the specific suffix #BB0 against official documentation to confirm packaging details such as tray quantity or reel specifications. Ensure the 28-VFQFPN exposed pad package matches the target PCB footprint requirements. Confirm RoHS compliance status through the manufacturer's latest datasheet before finalizing procurement orders.

Selection Notes

Select this component when designing for PCIe Gen7 signaling standards requiring minimal added jitter. The 1.8V supply voltage and LP-HCSL output type are critical for compatibility with modern server and accelerator architectures. Verify that the required output impedance configuration can be set via available control pins or SMBus interface.

Part Context

This part belongs to the RC191xx family of 1.8V PCIe Gen7 buffers. It serves as a direct upgrade path for legacy designs using lower-generation PCIe clocks, offering improved jitter performance and flexible output drive capabilities while maintaining backward compatibility with earlier PCIe standards.

Replacement Considerations

The RC19108A series offers eight outputs instead of four. For three-output configurations, consider the RC19103A variant. Ensure any replacement maintains the 1.8V supply requirement and compatible package dimensions.