CBTL04082A_CBTL04082B: 3.3 V, 4 differential channel, 2 : 1 multiplexer/demultiplexer switch for PCI Express Gen2 ARCHIVED

Overview

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CBTL04082A/B is an 8-to-4 bidirectional differential channel multiplexer/demultiplexer switch for PCI Express Generation 2 (Gen2) applications. The CBTL04082A/B can switch four 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. CBTL04082A/B allows expansion of existing high speed ports for extremely low power.

The devices’ pinouts are optimized to match different application layouts. CBTL04082A 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. CBTL04082B 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.

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Features

4 bidirectional differential channel, 2 : 1 multiplexer/demultiplexer
High-speed signal switching for PCIe Gen2 5 Gbit/s
High bandwidth: 6 GHz at -3 dB
Insertion loss:
- -0.5 dB at 100 MHz
- -1.2 dB at 2.5 GHz
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
V_DD operating range: 3.3 V ± 10 %
Dual shutdown pins for channel 0/1 and 2/3 independently to minimize power consumption
- Standby current less than 1 μA
ESD tolerance:
- 8 kV HBM
- 1 kV CDM
HVQFN42 package

Target Applications

Routing of high-speed differential signals with low signal attenuation
- PCIe Gen2
- DisplayPort 1.2
- USB 3.0
- SATA 6 Gbit/s

MoreLess

Features

4 bidirectional differential channel, 2 : 1 multiplexer/demultiplexer
High-speed signal switching for PCIe Gen2 5 Gbit/s
High bandwidth: 6 GHz at -3 dB
Insertion loss:
- -0.5 dB at 100 MHz
- -1.2 dB at 2.5 GHz
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
V_DD operating range: 3.3 V ± 10 %
Dual shutdown pins for channel 0/1 and 2/3 independently to minimize power consumption
- Standby current less than 1 μA
ESD tolerance:
- 8 kV HBM
- 1 kV CDM
HVQFN42 package

Target Applications

Routing of high-speed differential signals with low signal attenuation
- PCIe Gen2
- DisplayPort 1.2
- USB 3.0
- SATA 6 Gbit/s

Data Sheets

Application Notes