Design Files
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3.3 V, Two Differential Channel, 2-1 Multiplexer/Demultiplexer Switch for PCI Express® Gen2
CBTL02042A/B is a 2 differential channel, 2-to-1 multiplexer/demultiplexer switch for PCI Express Generation 2 (Gen2), and other high-speed serial interface applications. The CBTL02042A/B can switch two differential signals to one of two locations. Using a design technique, NXP has minimized the impedance of the switch such that the attenuation observed through the switch is negligible, and also minimized the channel-to-channel skew as well as channel-to-channel crosstalk, as required by the high-speed serial interface. CBTL02042A/B allows expansion of existing high speed ports for extremely low power.
The device's pinouts are optimized to match different application layouts. CBTL02042A has input and output pins on the opposite of the package, and is suitable for edge connector(s) with different signal sources on the motherboard. CBTL02042B has outputs on both sides of the package, and the device can be placed between two connectors to multiplex differential signals from a controller. Please refer to Section 8 for layout examples.
Outline 3d SOT764-1
Product Details
Block Diagram
Features
Key Features
- 2 bidirectional differential channel, 2 : 1 multiplexer/demultiplexer
- High-speed signal switching for PCIe Gen2 5 Gbit/s
- High bandwidth: 7 GHz at -3 dB
- Low intra-pair skew: 5 ps typical
- Low inter-pair skew: 35 ps maximum
- Low crosstalk: -30 dB at 2.5 GHz
- Low off-state isolation: -25 dB at 2.5 GHz
- Low return loss: -20 dB at 2.5 GHz
- VDD operating range: 3.3 V ±10 %
- Shutdown pin (XSD) for power-saving mode
- Standby current less than 1 µA
- DHVQFN20 package
Low Insertion Loss
- -0.5 dB at 100 MHz
- -1.2 dB at 2.5 GHz
ESD Tolerance
- 8 kV HBM
- 1 kV CDM
Routing of High-Speed Differential Signals with Low Signal Attenuation
- PCIe Gen2
- DisplayPort 1.2
- USB 3.0
- SATA 6 Gbit/s
Part numbers include: CBTL02042ABQ.
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