CBTL05023

CBTL05023 Multiplexer/demultiplexer switch for Thunderbolt applications Rev. 5 — 15 July 2013 Product data sheet 1. General description The CBTL05023 is a multiplexer/demultiplexer switch chip for DisplayPort v1.2 signals and the control signals of a 10 Gbit/s channel. The 10 Gbit/s channel does not pass through this switch. This chip provides BIASOUT output control signal, and the DC-biasing pull-down resistors to facilitate an external 10 Gbit/s channel. The AUX MUX is a 2 : 1 switch with CA_DETect pin selecting between AUX and DDC (Direct Display Control) signals. The DP MUX is a 2 : 1 switch that selects between DPML (DisplayPort Main Link) and LSTX/LSRX signals. This chip also includes three control signal buffers: HPDOUT, CA_DETOUT and BIASOUT. CBTL05023 is powered by a 3.3 V supply and it is available in 3 mm  3 mm HVQFN24 package with 0.4 mm pitch. 2. Features and benefits 2.1 AUX MUX 2 : 1 switch  This 2 : 1 switch is controlled by CA_DET signal multiplexing of the 1 Mbit/s differential AUX and DDC (Direct Display Control) signals  When CA_DET is HIGH, DDC path is selected  Differential AUX channel:  Low insertion loss: 0.5 dB at 5 MHz  Low return loss: 19 dB at 5 MHz  Low ON-state resistance: 7.5   Bandwidth: 5 GHz  Low off-state isolation: 75 dB at 5 MHz  Low crosstalk: 40 dB at 5 MHz  Common-mode input voltage VIC: 0 V to 3.3 V  Differential input voltage VID: 1.4 V (maximum)  DDC channel has DDC_CLK and DDC_DAT I2C signals  100 kHz 3.3 V vo...