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TPD12S521DBTR 数据表(PDF) 7 Page - Texas Instruments |
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TPD12S521DBTR 数据表(HTML) 7 Page - Texas Instruments |
7 / 19 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 55-mA Overcurrent Switch 5V_OUT 5V_SUPPLY 7 TPD12S521 www.ti.com SLVS639F – OCTOBER 2007 – REVISED FEBRUARY 2016 Product Folder Links: TPD12S521 Submit Documentation Feedback Copyright © 2007–2016, Texas Instruments Incorporated 8 Detailed Description 8.1 Overview The TPD12S521 is a single-chip ESD solution for the HDMI transmitter 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 TPD12S521 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 TPD12S521 adds little or no additional glitch in the high-speed differential signals (see Figure 5 and Figure 6). 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. The TPD12S521 provides an on-chip regulator with current output ratings of 55 mA at pin 38. This current enables HDMI receiver detection even when the receiver device is powered off. 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. 8.2 Functional Block Diagram |
类似零件编号 - TPD12S521DBTR |
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类似说明 - TPD12S521DBTR |
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