CBTL02042ABQ,115 NXP

CBTL02042A CBTL02042B 3.3 V, 2 differential channel, 2 : 1 multiplexer/demultiplexer switch for PCI Express Gen2 Rev. 1 10 March 2011 Product data sheet 1. General description 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 unique 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. 2. Features and benefits 2 bidirectional differential channel, 2 : 1 multiplexer/demultiplexer High-speed signal switching for PCIe Gen2 5 Gbit/s High bandwidth: 7 GHz at 3dB Low 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 operating range: 3.3 V 10 % DD Shutdown pin (XSD) for power-saving mode Standby current less than 1 A ESD tolerance: 8kV HBM 1 kV CDM DHVQFN20 packageCBTL02042A CBTL02042B NXP Semiconductors 3.3 V, 2 differential channel, 2 : 1 MUX/deMUX switch for PCIe Gen2 3. Applications Routing of high-speed differential signals with low signal attenuation PCIe Gen2 DisplayPort 1.2 USB 3.0 SATA 6 Gbit/s 4. Ordering information Table 1. Ordering information Type number Package Name Description Version CBTL02042ABQ DHVQFN20 plastic dual in-line compatible thermal enhanced very thin quad flat SOT764-1 1 package no leads 20 terminals body 2.5 4.5 0.85 mm CBTL02042BBQ DHVQFN20 plastic dual in-line compatible thermal enhanced very thin quad flat SOT764-1 1 package no leads 20 terminals body 2.5 4.5 0.85 mm 1 Total height after printed-circuit board mounting = 1.0 mm maximum. 5. Functional diagram A0 P B0 P A0 N B0 N A1 P B1 P A1 N B1 N C0 P C0 N C1 P C1 N SEL XSD 002aaf073 Fig 1. Functional diagram of CBTL02042A CBTL02042B CBTL02042A CBTL02042B All information provided in this document is subject to legal disclaimers. NXP B.V. 2011. All rights reserved. Product data sheet Rev. 1 10 March 2011 2 of 16