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PEX 8525
PEX 8525: 24 Lane, 5 Port PCI Express Switch, 31 x 31mm² PBGA
The ExpressLane™ PEX 8525 device offers 24 PCI Express lanes, capable of configuring up to 5 flexible ports. The switch conforms to the PCI Express Base Specification, rev 1.1. The 24-lane switch enables users to add scalable, high bandwidth I/Os to a wide variety of applications including servers, storage, communications, blade servers, and embedded-control systems. The PEX 8525 is well suited for fan-out, aggregation, dual-graphics, peer-to-peer, and intelligent I/O module applications. The architecture supports packet cut-thru with the industry's lowest latency of 115ns (x8 to x8) for a 24-lane switch. This, combined with large packet memory (1024 byte maximum payload size) and non-blocking internal switch architecture, provide full line-rate on all ports for performance-hungry applications. The PEX 8525 is offered in a 31 x 31mm² 736-ball PBGA package. This device is available in leaded and lead-free packaging.
Page Index
Related Gen 1 Devices
Related Gen 2 Devices
Supporting Documentation
- PCIe Technical Info & White Papers
- General PLX Product Documentation
- Support Documentation (Quality, FAQs, RoHS...)
Hot Applications
Usage Models
Suitable for host-centric and peer-to-peer traffic patterns

PEX 8525 Technical Documentation
| Document/Resources | Everyone Access | Requires Membership | Requires NDA | Description | Version | Date |
|---|---|---|---|---|---|---|
| Product Brief | Download | Product Overview | 1.5 | 05/08 | ||
| Data Book | Download | Detailed Technical Specifications | 1.5 | 01/08 | ||
| Design Notes | Download | I2C Level Shifting and Voltage Management | 1.0 | 08/07 | ||
| Part Numbers Listing | View HTML | Part Number, Listing and Compliance | -- | -- |
PEX 8525 Development Tools
| Document/Resources | Everyone Access | Requires Membership | Requires NDA | Description | Version | Date |
|---|---|---|---|---|---|---|
| Software Development Kit (SDK) | View HTML | Software Development Kit | -- | -- | ||
| BSDL | Download | Boundary Scan Description Language files | 1.1 | 01/08 | ||
| HSPICE Model | Download | PEX 8525 HSPICE Model | 1.0 | 09/06 | ||
| IBIS Models | Download | IBIS Model | 1.0 | 10/06 | ||
| OrCAD | Download | PEX 8525 RDK OrCAD Design files | 1.0 | 07/07 | ||
| Download | PEX 8525 OrCAD library files | 1.0 | 12/06 | |||
| GERBER | Download | PEX 8525 RDK Gerber files | 1.0 | 07/07 |
PEX 8525 Applications
| Application | Description | Document | |
|---|---|---|---|
| Embedded | Imaging / Graphics | PCI Express Switch in Embedded Systems - Expands PCIe Ports & End Points | ExpressApps#16 (PDF) |
| Printer | |||
| Medical | |||
| Industrial | |||