TPD12S521

ACTIVE

HDMI transmitter port protection and interface device

Product details

Type HDMI Companion Protocols HDMI Rating Catalog Number of channels 12 Supply voltage (V) 5, 5.5 Operating temperature range (°C) -40 to 85
Type HDMI Companion Protocols HDMI Rating Catalog Number of channels 12 Supply voltage (V) 5, 5.5 Operating temperature range (°C) -40 to 85
TSSOP (DBT) 38 62.08 mm² 9.7 x 6.4
  • IEC 61000-4-2 Level 4 ESD Protection
    • ±8-kV Contact Discharge on External Lines
  • Single-Chip ESD Solution for HDMI Driver
  • On-Chip Current Regulator with 55-mA Current
    Output
  • Supports All HDMI 1.3 and HDMI 1.4 Data Rates
    (–3 dB Frequency > 3 GHz)
  • 0.8-pF Capacitance for the High Speed TMDS
    Lines
  • 0.05-pF Matching Capacitance Between the
    Differential Signal Pair
  • 38-Pin TSSOP Provides Seamless Layout Option
    with HDMI Connector
  • Backdrive Protection
    • TMDS_D[2:0]+/–
    • TMDS_CK+/–
    • CE_REMOTE_OUT
    • DDC_DAT_OUT
    • DDC_CLK_OUT
    • HOTPLUG_DET_OUT
  • Lead-Free Package
  • IEC 61000-4-2 Level 4 ESD Protection
    • ±8-kV Contact Discharge on External Lines
  • Single-Chip ESD Solution for HDMI Driver
  • On-Chip Current Regulator with 55-mA Current
    Output
  • Supports All HDMI 1.3 and HDMI 1.4 Data Rates
    (–3 dB Frequency > 3 GHz)
  • 0.8-pF Capacitance for the High Speed TMDS
    Lines
  • 0.05-pF Matching Capacitance Between the
    Differential Signal Pair
  • 38-Pin TSSOP Provides Seamless Layout Option
    with HDMI Connector
  • Backdrive Protection
    • TMDS_D[2:0]+/–
    • TMDS_CK+/–
    • CE_REMOTE_OUT
    • DDC_DAT_OUT
    • DDC_CLK_OUT
    • HOTPLUG_DET_OUT
  • Lead-Free Package

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.

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.

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Technical documentation

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Type Title Date
* Data sheet TPD12S521 Single-Chip HDMI Transmitter Port Protection and Interface Device datasheet (Rev. F) PDF | HTML 08 Feb 2016
User guide Reading and Understanding an ESD Protection Data Sheet (Rev. A) PDF | HTML 19 Sep 2023
Selection guide System-Level ESD Protection Guide (Rev. D) 07 Sep 2022
Application note ESD Protection Layout Guide (Rev. A) PDF | HTML 07 Apr 2022
Selection guide ESD by Interface Selection Guide (Rev. A) 26 Jun 2017
White paper Designing USB for short-to-battery tolerance in automotive environments 10 Feb 2016
Analog Design Journal Design Considerations for System-Level ESD Circuit Protection 25 Sep 2012

Design & development

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Simulation model

TPD12S521 IBIS Model

SLVM270.ZIP (27 KB) - IBIS Model
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TSSOP (DBT) 38 Ultra Librarian

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