Products > Integrated Circuits (ICs) > Interface ICs > PEX8508-AC25BI

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Flexible & Versatile PCI Express Switch (iii) ,Switch ICs - Various LOW-PWR 5LANE 5PORT EXPRESSLANE PCIe SWT

Manufacturer : PLX Technology, Inc. (Broadcom)
Package/Case : BGA
Product Categories : Switch ICs - Various
Datasheet: PEX8508-AC25BI Datasheet (PDF)
RoHs Status: Lead free / RoHS Compliant
In-stock: 606


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PEX8508-AC25BI Product Details

The PEX 8505 device offers PCI Express switching capability conforming to the PCI Express Base specification revision 1.1. This device enables users to add scalable high bandwidth, non-blocking interconnects at the lowest cost to a wide variety of applications including communications platforms, consumer products, servers, storage systems, blade servers, industrial systems and embedded-control products. The PEX 8505 can be used as a fan-out, or peer-to-peer switch, and is well-suited for Control Plane Applications, I/O Expansion, Video Surveillance, Multi Function Printers, DVRs, Industrial Control Systems, Medical Imaging Systems, Embedded Systems and AMC modules.


ƒ PEX 8505 General Features
o 5-lane PCI Express switch
- Gen 1 (2.5Gbps) Integrated SerDes
o Up to 5 ports (x1, x2)
o 15mm x 15mm, 196-ball PBGA pkg.
o Typical Power: 0.8 Watts
ƒ PEX 8505 Key Features
o Standards Compliant
- PCI Express Base Specification, r1.1
- PCI Power Management Interface Specification r1.2
o High Performance
- Cut-thru with low packet latency
- Max Payload Size of 1024 Bytes
- Non-blocking internal architecture
- Full line rate on all ports
o Flexible Configuration
- Five flexible & configurable ports
(x1, x2)
- Lane and polarity reversal
- Configurable with strapping pins,
EEPROM, I2 C or Host software
o PCI Express Power Management
- Link power management states: L0,
L0s, L1, L2/L3 Ready and L3
- Device states: D0 and D3hot

o Quality of Service (QoS)

One Virtual Channel per port
- Eight Traffic Classes per port
- Weighted Round-Robin Ingress Port Arbitration
o Reliability, Availability,
- 3 Standard Hot-Plug Controllers
supporting PCI SHPC spec r1.0
- Transaction layer end-to-end CRC
- Poison bit support
- Basic and Advanced Error Reporting support
- Per port error diagnostics
• Bad DLLPs
• Bad TLPs
• CRC errors and more
- Fatal Error (FATAL_ERR#) signal (legacy SERR equivalent)
- INTA# signal
- Port status bits
- Eight software controllable General Purpose Output (GPO) signals
- JTAG boundary scan


Suitable for control plane applications, multi-function printers, DVRs, industrial control systems, medical imaging systems, embedded systems & AMC modules, the PEX 8505 can be configured for a wide variety of form factors and applications.

PEX8508-AC25BI Pinout
(Picture: Pinout)

PEX8508-AC25BI Block Diagram
(Picture: Diagram)

Technical Parameters

  • Packaging
  • Bulk
  • Factory Pack Quantity
  • 840

PEX8508-AC25BI Datasheet

PEX8508-AC25BI Related Products

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Estimated Delivery Time: Dec 13 - Dec 18 days (choose Expedited at checkout).

Shipping & Payment


  • Shipping Type
  • Ship Fee
  • Lead Time
  • $20.00-$40.00 (0.50 KG)
  • 2-5 days
  • $20.00-$40.00 (0.50 KG)
  • 3-7 days
  • $20.00-$45.00 (0.50 KG)
  • 2-5 days
  • $25.00-$65.00 (0.50 KG)
  • 2-5 days
  • $25.00-$45.00 (0.50 KG)
  • 5-14 days
  • $2.00-$3.00 (0.10 KG)
  • 7-30 days

Processing Time:Shipping fee depend on different zone and country.


  • Terms of payment
  • Hand Fee
  • Payment Site
  • charge US$30.00 banking fee.
  • charge 4.0% service fee.
  • charge 3.5% service fee.
  • charge US$0.00 banking fee.
  • charge US$0.00 banking fee.

We provide high quality products, thoughtful service and after sale guarantee

  • We have rich products, can meet your various needs.

    We have rich products, can meet your various needs.

  • Minimum order quantity starts from 1pcs.

    Minimum order quantity starts from 1pcs.

  • Lowest international shipping fee starts from US$2.00.

    Lowest international shipping fee starts from US$2.00.

  • 90 days quality guarantee for all products.

    90 days quality guarantee for all products.


  • Step1:Product

    Step1: Products

  • Step2:Vacuum packaging

    Step2: Vacuum Packaging

  • Step3:Anti-static bag

    Step3: Anti-Static Bag

  • Step4:Individual packaging

    Step4: Individual Packaging

  • Step5:Packaging boxes

    Step5: Packaging Boxes

  • Step6:bar-code shipping tag

    Step6: Bar-Code Shipping Tag

All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

Jotrin ESD packing


1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that PEX8508-AC25BI is the original manufacturer or agent of PLX?
We have a professional business development department to strictly test and verify the qualifications of PLX original manufacturers and agents. All PLX suppliers must pass the qualification review before they can publish their PEX8508-AC25BI devices; we pay more attention to the channels and quality of PEX8508-AC25BI products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of PEX8508-AC25BI chips? Including PLX original factory information, Switch ICs - Various application, PEX8508-AC25BI pictures?
You can use Jotrin's intelligent search engine, or filter by Switch ICs - Various category, or find it through PLX Technology, Inc. (Broadcom) Information page.
Q: Are the PLX's PEX8508-AC25BI price and stock displayed on the platform accurate?
The PLX's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for PEX8508-AC25BI, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
Q: Can I place an order offline?
Yes. We accept offline orders.
We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
Q: What forms of payment can I use in Jotrin?
TT Bank, Paypal, Credit Card, Western Union, and Escrow is all acceptable.
Q: How is the shipping arranged and track my package?
Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of PEX8508-AC25BI?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the PEX8508AC25BI we delivered, we will accept the replacement or return of the PEX8508-AC25BI only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of PEX8508-AC25BI.
(3)The PEX8508-AC25BI is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
Q: How to contact us and get support, such as PEX8508-AC25BI datasheet pdf, PEX8508 pin diagram?
Need any After-Sales service, please feel free contact us:

PLX Technology, Inc. (Broadcom)

PLX Technology, Inc. acquired by Broadcom Limited, is the leading supplier of PCI Express (PCIe) Bridges and Switches and other standard input/output (I/O) interconnect silicon. PLX's innovative products and supporting tools enable customers to develop systems with industry-leading performance, scal...

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