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NXP Semiconductors - 2 : 1 multiplexer/demultiplexer switch

Numéro de référence CBTL04082B
Description 2 : 1 multiplexer/demultiplexer switch
Fabricant NXP Semiconductors 
Logo NXP Semiconductors 





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CBTL04082B fiche technique
CBTL04082A; CBTL04082B
3.3 V, 4 differential channel, 2 : 1 multiplexer/demultiplexer
switch for PCI Express Gen2
Rev. 1 — 28 February 2011
Product data sheet
1. General description
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 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.
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.
2. Features and benefits
„ 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
„ VDD 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

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