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TPD12S520DBTR Datasheet(PDF) 7 Page - Texas Instruments |
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TPD12S520DBTR Datasheet(HTML) 7 Page - Texas Instruments |
7 / 22 page TMDS_D2+ TMDS_GND TMDS_D2– TMDS_D1+ TMDS_GND TMDS_D1– TMDS_D0+ TMDS_GND TMDS_D0– TMDS_CK+ TMDS_GND TMDS_CK– 5V_SUPPLY DDC_DAT_OUT HOTPLUG_DET_OUT ESD_BYP LV Supply LV Supply CE_REMOTE_IN CE_REMOTE_OUT DDC_DAT_IN LV Supply LV Supply DDC_CLK_IN DDC_CLK_OUT HOTPLUG_DET_IN TPD12S520 www.ti.com SLVS640F – OCTOBER 2007 – REVISED FEBRUARY 2015 7 Detailed Description 7.1 Overview The TPD12S520 is a single-chip ESD solution for the HDMI receiver port. In many cases the core ICs, such as the scalar chipset, may not have robust ESD cells to sustain system-level ESD strikes. In these cases, the TPD12S520 provides the desired system-level ESD protection, such as the IEC61000-4-2 (Level 4) ESD, by absorbing the energy associated with the ESD strike. While providing the ESD protection, the TPD12S520 adds little or no additional glitch in the high-speed differential signals (see Figure 7 and Figure 8). The high-speed TMDS lines add only 0.8-pF capacitance to the lines. In addition, the monolithic integrated circuit technology ensures that there is excellent matching between the two-signal pair of the differential line. This is a direct advantage over discrete ESD clamp solutions where variations between two different ESD clamps may significantly degrade the differential signal quality. The low-speed control lines offer voltage-level shifting to eliminate the need for an external voltage level-shifter IC. The control line ESD clamps add 3.5-pF capacitance to the control lines. The 38-pin DBT package offers a seamless layout routing option to eliminate the routing glitch for the differential signal pairs. DBT package pitch (0.5 mm) matches with HDMI connector pitch. In addition, pin mapping follows the same order as the HDMI connector pin mapping. The 24-pin RMN package offers flow through routing using only two layers for highly integrated, space-efficient full HDMI protection. 7.2 Functional Block Diagram Copyright © 2007–2015, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: TPD12S520 |
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