Broadcom PEX8696,PEX8680,PEX8649,PEX8648,PEX8647 PCIe Gen2 Switches
Broadcom PEX8696, PEX8680, PEX8649, PEX8648 and PEX8647 PCIe Gen2 Switch ICs
Broadcom PEX8696, PEX8680, PEX8649, PEX8648 and PEX8647 are PCIe Gen2 switch ICs designed for systems that require reliable PCI Express expansion. These devices are useful for legacy platforms, industrial systems, communication equipment, storage systems and embedded computing designs where PCIe Gen2 architecture is still required.
The PEX8696 and PEX8680 offer high lane counts for large PCIe expansion platforms. The PEX8649, PEX8648 and PEX8647 provide 48-lane options for medium-to-large systems.
Model Comparison Table
| Part Number | PCIe Spec | Lanes | Port Count | Latency | Package Size | Typical Power | Read Pacing |
| PEX8696 | Gen2 / r2.0 | 96 | 24 | 176 ns | 35 mm x 35 mm | 10.2 W | Yes |
| PEX8680 | Gen2 / r2.0 | 80 | 20 | 176 ns | 35 mm x 35 mm | 9.0 W | Yes |
| PEX8649 | Gen2 / r2.0 | 48 | 12 | 176 ns | 27 mm x 27 mm | 6.7 W | Yes |
| PEX8648 | Gen2 / r2.0 | 48 | 12 | 140 ns | 27 mm x 27 mm | 3.5 W | Yes |
| PEX8647 | Gen2 / r2.0 | 48 | 3 | 140 ns | 27 mm x 27 mm | 3.5 W | Yes |
Typical Applications
These models can be used in PCIe backplanes, embedded computing boards, legacy server platforms, industrial control systems, high-speed data acquisition equipment and network communication devices. They are also suitable for repair, replacement and long-life-cycle system maintenance projects.
Product Selection Notes
Choose PEX8696 when your design needs 96 lanes and up to 24 ports. Choose PEX8680 for 80-lane, 20-port applications. Choose PEX8649 for 48-lane systems requiring 12 ports. Choose PEX8648 when lower typical power and 48 lanes are important. Choose PEX8647 for 48-lane designs with fewer ports.
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