Features
- LP-HCSL outputs eliminate up to 16 termination resistors.
- PCIe Gen 1–7 compliance
- 2:4 or two 1:2 multiplexer options
- Drive both source-terminated and double-terminated loads selectable 85Ω and 100Ω output impedance
- Open-drain LOS (Loss-Of-Signal) indication output
- Power down tolerance (PDT)
- Flexible startup sequencing (FSS)
- Automatic clock parking (ACP)
- Dedicated OE# pins to control group output
- 4mm × 4mm 28-VFQFPN package
Description
The RC19204 is a 2:4 PCIe Gen7 multiplexer that is backward compatible with earlier PCIe generations. The RC19204 provides ultra-low additive jitter and reduced in-to-out delay performance for better design margin and incorporates several features for easier and more robust design.
Parameters
| Attributes | Value |
|---|---|
| Diff. Outputs | 4 |
| Diff. Output Signaling | LP-HCSL |
| Output Freq Range (MHz) | 1 - 400 |
| Diff. Inputs | 2 |
| Power Consumption Typ (mW) | 92 |
| Supply Voltage (V) | 3.3 - 3.3 |
| Output Type | LP-HCSL |
| Battery Backup | No |
| Battery Seal | No |
| CPU Supervisory Function POR | No |
| Crystal Frequency Trimming | No |
| Frequency Out Pin | No |
| Inputs (#) | 2 |
| Input Freq (MHz) | 1 - 400 |
| Adjustable Phase | No |
| Noise Floor (dBc/Hz) | -154 |
| Channels (#) | 2 |
| Additive Phase Jitter Typ RMS (fs) | 37 |
| Function | Multiplexer |
| Input Type | LVDS, HCSL |
| Output Banks (#) | 2 |
| Core Voltage (V) | 3.3 |
| Output Voltage (V) | 0.8 |
| Product Category | Clock Buffers & Drivers, PCI Express Clocks |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| VFQFPN | 4.0 x 4.0 x 0.9 | 28 | 0.4 |
Application Block Diagrams
 | AMD 4th-Gen EPYC (Genoa) Power & Timing System Complete power and timing system for AMD Genoa with SVI3, DDR5, and PCIe Gen 5/6 support. |