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General description

The CBTL06141 is a six-channel (‘hex’) multiplexer for DisplayPort and PCI Express

applications at Generation 1 (‘Gen1’) speeds. It provides four differential channels

capable of 1 : 2 switching or 2 : 1 multiplexing (bidirectional and AC-coupled) PCI Express

or DisplayPort signals, using high-bandwidth pass-gate technology. Additionally, it

provides for switching/multiplexing of the Hot Plug Detect signal as well as the AUX or

DDC (Direct Display Control) signals, for a total of six channels on the display side. The

AUX and DDC channels provide a four-position multiplexer such that an additional level of

multiplexing can be accomplished when AUX and DDC I/Os are on separate pins of the

display source device.

The CBTL06141 is designed for Gen1 speeds, at 2.5 Gbit/s for PCI Express or 2.7 Gbit/s

for DisplayPort, and for inputs voltages of up to 3.3 V typical. It consumes very low current

in operational mode (less than 1 mA typical) and provides for a shutdown function (less

than 10 μA) to support battery-powered applications.

A typical application of CBTL06141 is on motherboards where one of two GPU display

sources needs to be selected to connect to a display sink device or connector. A controller

chip selects which path to use by setting a select signal HIGH or LOW. Due to the

non-directional nature of the signal paths (which use high-bandwidth passgate

technology), the CBTL06141 can also be used in the reverse topology, e.g., to connect

one display source device to one of two display sink devices or connectors.

Optionally, the hex MUX device can be used in conjunction with an HDMI/DVI level shifter

device (PTN3300A, PTN3300B or PTN3301) to allow for DisplayPort as well as HDMI/DVI

connectivity.

Features and benefits

- 1 : 2 switching or 2 : 1 multiplexing of DisplayPort (v1.1 - 2.7 Gbit/s) or PCI Express

(v1.1 - 2.5 Gbit/s) signals

- 4 high-speed differential channels with 2 : 1 muxing/switching for DisplayPort or

PCI Express signals

- 1 channel with 4 : 1 muxing/switching for AUX differential signals or DDC

single-ended clock and data signals

- 1 channel with 2 : 1 muxing/switching for single-ended HPD signals

- High-bandwidth analog pass-gate technology

- Very low intra-pair differential skew (< 5 ps)

- Very low inter-pair skew (< 180 ps)

- Switch/multiplexer position select CMOS input

- Shutdown mode CMOS input

- Shutdown mode minimizes power consumption while switching all channels off

- DDC and AUX ports tolerant to being pulled to +5 V via 2.2 kΩ resistor

- Supports HDMI/DVI incorrect dongle connection

- Single 3.3 V power supply

- Very low operation current of 0.2 mA typical

- Very low shutdown current of < 10 μA

- ESD 8 kV HBM, 1 kV CDM

- ESD 2 kV HBM, 500 V CDM for control pins

- Available in 5 mm × 5 mm, 0.5 mm ball pitch TFBGA48 package

Applications

- Motherboard applications requiring DisplayPort and PCI Express switching/multiplexing

- Docking stations

- Notebook computers

- Chip sets requiring flexible allocation of PCI Express or DisplayPort I/O pins to board

connectors