The TPD12S521 is a single-chip electro-static discharge (ESD) circuit protection device for the high-definition multimedia interface (HDMI) transmitter port. While providing ESD protection with transient voltage suppression (TVS) diodes, the TVS protection adds little or no additional glitch in the high-speed differential signals. The high-speed transition minimized differential signaling (TMDS) ESD protection lines add only 0.8-pF capacitance.
The low-speed control lines offer voltage-level shifting to eliminate the need for an external voltage level-shifter IC. The control line TVS diodes 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 DBT package pitch (0.5 mm) matches with the HDMI connector pitch. In addition, the pin mapping follows the same order as the HDMI connector pin mapping. The TPD12S521 provides an on-chip current limiting switch with output ratings of 55 mA at pin 38. This enables HDMI receiver detection even when the receiver device is powered off.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | TPD12S521 Single-Chip HDMI Transmitter Port Protection and Interface Device datasheet (Rev. F) | PDF | HTML | Feb 8, 2016 |
| Selection guide | System-Level ESD Protection Guide (Rev. E) | PDF | HTML | Aug 5, 2025 | |
| User guide | Reading and Understanding an ESD Protection Data Sheet (Rev. A) | PDF | HTML | Sep 19, 2023 | |
| Application note | ESD Protection Layout Guide (Rev. A) | PDF | HTML | Apr 7, 2022 | |
| Selection guide | ESD by Interface Selection Guide (Rev. A) | Jun 26, 2017 | ||
| White paper | Designing USB for short-to-battery tolerance in automotive environments | Feb 10, 2016 | ||
| Analog design Journal | Design Considerations for System-Level ESD Circuit Protection | Sep 25, 2012 |
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| TSSOP (DBT) | 38 | Ultra Librarian |
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