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MAX4889B, MAX4889C
2.5/5.0/8.0Gbps PCIe Passive Switch
High-Speed PCI Express Passive Switches Enable Gen II Switching with Low Insertion Loss and Superior Return Loss
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Status
Active: In Production.
Description
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.
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Data Sheet
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An evaluation kit is available: MAX4889BEVKIT
Key Features
- 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
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Applications/Uses
- Desktop PCs
- Notebook PCs
- Servers
- Video Graphics Cards—SLI® (Scaled Link Interface) and CrossFire™
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Key Specifications:
| Switches and Multiplexers (Low Voltage) |
| Part Number |
Protocol |
Config. |
Channels |
VSUPPLY (Single)
(V) |
VSUPPLY (Single)
(V) |
VSIGNAL
(V) |
VSIGNAL
(V) |
Dynamic Range (max)
(V) |
RON
(Ω) |
RFLAT(ON) |
BW
(MHz) |
IL(OFF)
(nA) |
Budgetary Price |
| min |
max |
min |
max |
max |
max |
typ |
max |
See Notes |
| MAX4889B |
PCIe |
2:1 |
8 |
3 |
3.6 |
0 |
1.8 |
1.8 |
8.4 |
0.3 |
5000 |
1000 |
$2.05 @1k |
| MAX4889C |
SAS |
6000 |
$2.05 @1k |
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See All Switches and Multiplexers (Low Voltage) (186)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Functional Diagram
More Information
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Information Index
Document Ref.: 19-4148
Rev 2;
2010-09-01
This page last modified: 2011-08-15
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