CBTU04083BS,518

Overview

The CBTU04083BS,518 is an 8-to-4 differential channel multiplexer/demultiplexer switch designed for high-speed serial interfaces. It routes four differential signals to one of two output locations using a single-ended SEL input. The device operates within a VDD range of 1.62 V to 1.98 V and supports signal switching up to 8.0 Gbit/s. Key electrical parameters include a maximum intra-pair skew of 10 ps, inter-pair skew of 35 ps, and crosstalk attenuation of -30 dB at 4 GHz. It provides off-state isolation of -30 dB at 4 GHz with a typical propagation delay of 80 ps.

Feature Summary

• Routes four differential channels between two selectable output ports via a single control pin
• Maintains negligible signal attenuation and minimal channel-to-channel skew for high-speed integrity
• Provides robust electrostatic discharge protection rated at 6 kV HBM and 1 kV CDM

Applications

• Routing PCIe Gen3 differential signals
• DisplayPort 1.2 signal expansion
• USB 3.0 interface switching
• SATA 6 Gbit/s data routing

Procurement Notes

Verify the specific ordering suffix 'BS' against the manufacturer's current documentation to confirm package details and material declarations. Ensure the component meets RoHS compliance requirements for your target market. Confirm that the HVQFN42 package dimensions align with your PCB footprint design before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring low-loss switching for multiple differential pairs. Verify that the operating voltage remains within the 1.8 V ± 10 % specification. Ensure the application environment stays within the recommended temperature range of -40 °C to +85 °C. Check that the required bandwidth does not exceed the specified 4.3 GHz -3 dB limit.

Part Context

This part belongs to NXP's CBTU series of analog switches. It is specifically engineered for expanding existing high-speed ports while maintaining extremely low power consumption. The device utilizes a unique design technique to minimize impedance, ensuring high performance in portable and embedded applications where signal integrity is critical.

Replacement Considerations

Consult official NXP documentation for confirmed substitute part numbers. Do not assume functional equivalence with other series members without verifying pinout and electrical specifications.