TPD7S019-15DBQR Circuit Protection

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1. Description

The TPD7S019-15DBQR device is an integrated electrostatic discharge (ESD) circuit protection solution for VGA and DVI-I connectors. It integrates transient voltage suppression (TVS) protection diodes for VIDEO, DDC and SYNC signals and meets the IEC61000-4-2 standard for ±8-kV contact ESD protection. The TVS diodes only add low capacitances to help signals run at high-speed. It also provides level-shifting for the DDC signals saving external level-shifters. Two noninverting drivers on HSYNC and VSYNC convert TTL input levels to CMOS output levels and each buffer has a series termination resistor connected to the SYNC_OUT pin, eliminating the external termination resistors. Three supply lines control the power rails of the VIDEO, DDC and SYNC channels to facilitate interfacing with low voltage video controller ICs in mixed supply-voltage environments. The TPD7S019-15DBQR comes with two package options. The 16-pin RSV is compact and space-saving. The 16-pin DBQ package and pinout are optimized for easy board layout. This ESD protection product is a good solution to protect the VGA and DVI-I ports for desktop and laptop PCs, set top boxes, TVs and monitors.

2. Features

    1. 7-Channel ESD Protection Includes ESD Protection, Level-Shifting, Buffering and Sync Impedance Matching

    2. Exceeds IEC61000-4-2 (Level 4) ESD Protection to Requirements on the External Pins

        – ±8-kV IEC 61000-4-2 Contact Discharge

    3. Very Low Loading Capacitance from ESD Protection Diodes on VIDEO Lines (2.5 pF)

    4. 5-V Drivers for HSYNC and VSYNC Lines

    5. Integrated Impedance Matching Resistors on Sync Lines

    6. Bidirectional Level-Shifting N-Channel FETs Provided for DDC_CLK and DDC_DATA Channels

    7. Flow-Through Single-In-Line Pin Mapping Ensures no Additional Board Layout Burden While Placing the ESD Protection Chip Near the Connector

3. Applications

    1. End Equipment:

        – Desktop and Notebook PCs

        – Set Top Boxes

        – TVs

    2. Interfaces:

        – VGA

        – DVI-I

4. Feature Description

The TPD7S019-15DBQR is an integrated protection solution for VGA and DVI-I ports. It has the low capacitance ESD TVS diodes for the VIDEO signals to ensure high speed data transmission. Level-shifting on the DDC lines translate signals on the cable to the level can be processed by downstream ICs. Buffers on the SYNC lines condition the signal levels and quality. The integrated termination resistors help reduce external devices. The TPD7S019 exceeds IEC61000-4-2 (Level 4) ESD standard of ±8-kV contact discharge, making the system robust against system level ESD. The two package options provide the freedom to choose between a compact package or a flow through package.

5. Application Information

When a system contains a human interface connector, it becomes vulnerable to large system-level ESD strikes that standard ICs cannot survive. The TPD7S019 provides IEC61000-4-2 Level 4 Contact ESD rating to the VGA or DVI-I port. The integrated voltage level-shifting, buffering and termination reduce the board space needed to implement the control lines functions.