MAX4889B
PRODUCTION2.5/5.0/8.0Gbps PCIe Passive Switch
High-Speed PCI Express Passive Switches Enable Gen II Switching with Low Insertion Loss and Superior Return Loss
- Part Models
- 2
- 1ku List Price
- Starting From $3.83
Part Details
- Single +3.3V Power-Supply Voltage
- Support PCIe Gen I, Gen II, and Gen III Data Rates
- Supports SAS I, SAS II, and SAS 6.0Gbps (MAX4889C)
- Superior Return Loss
- Better than -22dB (typ) at 4.0GHz
- Excellent Return Loss
- Better than -1.2dB (typ) at 4.0GHz
- Small 3.5mm x 9.0mm, 42-Pin TQFN Package
- Industry-Standard Pinouts
The MAX4889B/MAX4889C high-speed passive switches route PCI Express® (PCIe) data between two possible destinations in desktop or notebook PCs. The MAX4889B/MAX4889C are quad double-pole/double-throw (4 x DPDT) switches ideal for switching four half lanes of PCIe data between two destinations. The MAX4889B/MAX4889C feature a single digital control input (SEL) to switch signal paths.
The MAX4889C is intended for use in systems (e.g., SAS) where both the input and output are capacitively coupled, and provides a 10µA (typ) source current and a 60kΩ (typ) internal biasing resistor to GND at the _OUT_ terminals.
The MAX4889B/MAX4889C are fully specified to operate from a single +3.3V (typ) power supply. Both devices are available in an industry-standard 3.5mm x 9.0mm, 42-pin TQFN package. These devices operate over the -40°C to +85°C extended temperature range.
Applications
- Desktop PCs
- Notebook PCs
- Servers
- Video Graphics Cards—SLI® (Scaled Link Interface) and CrossFire™
Documentation
Data Sheet 1
Reliability Data 1
Design Note 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX4889BETO+ | 42-LFCSP-3.5X9X0.75 | ||
| MAX4889BETO+T | 42-LFCSP-3.5X9X0.75 |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareTools & Simulations
IBIS Model 1
Evaluation Kits
Evaluation Kit for the MAX4889B and MAX4889C