PTN3300B Datasheet | NXP Semiconductors

.. DVI and HDMI level shifter Rev. 01 - 8 July 2008 Product data sheet 1. General description The PTN3300B is a high-speed level shifter device which converts four lanes of low-swing AC-coupled differential input signals to DVI and HDMI pliant open-drain current-steering differential output signals, up to 2.25 Gbit/s per lane. Each of these lanes provides a level-shifting differential buffer to translate from low-swing AC-coupled differential signaling on the source side, to TMDS-type DC-coupled differential current-mode signaling terminated into 50 Ω to 3.3 V on the sink side. Additionally, the PTN3300B provides a single-ended active buffer for voltage translation of the HPD signal from 5 V on the sink side to 3.3 V on the source side and provides a channel for level shifting of the DDC channel (consisting of a clock and a data line) between 3.3 V source side and 5 V sink side. The DDC channel is implemented using pass gate technology allowing level shifting as well as disablement (isolation between source and sink) of the clock and data lines. The low-swing AC-coupled differential input signals to the PTN3300B typically e from a display source with multi-mode I/O, which supports multiple display standards, e.g., Display Port, HDMI and DVI. While the input differential signals are configured to carry DVI or HDMI coded data, they do not ply with the electrical requirements of the DVI v1.0 or HDMI v1.3a specification. By using PTN3300B, chip set vendors are able to implement such reconfigurable I/Os on multi-mode display source devices, allowing the support of multiple display standards while keeping the number of chip set I/O pins low. See Figure 1. The PTN3300B main high-speed differential lanes feature low-swing self-biasing differential inputs which are pliant to the electrical specifications of Display Port Standard v1.1 and/or PCI Express Standard v1.1, and open-drain current-steering differential outputs pliant to DVI...