CBTL02043A Datasheet, PDF (1/16 Pages) NXP Semiconductors – 3.3 V, 2 differential channel, 2 : 1 multiplexer/demultiplexer switch for PCI Express Gen3

CBTL02043A; CBTL02043B
3.3 V, 2 differential channel, 2 : 1 multiplexer/demultiplexer
switch for PCI Express Gen3
Rev. 1 — 10 March 2011
Product data sheet
1. General description
CBTL02043A/B is a 2 differential channel, 2-to-1 multiplexer/demultiplexer switch for
PCI Express Generation 3 (Gen3), or other high-speed serial interface applications. The
CBTL02043A/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. CBTL02043A/B allows expansion of existing high speed ports
for extremely low power.
The device's pinouts are optimized to match different application layouts. CBTL02043A
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. CBTL02043B 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 Gen3 8 Gbit/s
„ High bandwidth: 10 GHz at −3 dB
„ Low insertion loss:
‹ −0.5 dB at 100 MHz
‹ −1.3 dB at 4.0 GHz
„ Low return loss: −20 dB at 4 GHz
„ Low crosstalk: −35 dB at 4 GHz
„ Low off-state isolation: −20 dB at 4 GHz
„ Low intra-pair skew: 5 ps typical
„ Low inter-pair skew: 35 ps maximum
„ V_DD operating range: 3.3 V ± 10 %
„ Shutdown pin (XSD) for power-saving mode
‹ Standby current less than 1 μA
„ ESD tolerance:
‹ 2000 V HBM
‹ 1000 V CDM
„ DHVQFN20 package