ESD protection for high-speed interfaces

June 21, 2011

The IP4285CZ9-TBB is designed to protect high-speed interfaces such as High-Definition Multimedia Interface (HDMI), DisplayPort, external Serial Advanced Technology Attachment (eSATA) and Low Voltage Differential Signaling (LVDS) Interfaces against electrostatic discharge (ESD).

All signal lines are protected by a special diode configuration offering ultra low line capacitance of 0.85 pF maximum. These diodes provide protection to downstream components from ESD voltages up to ±12 kV contact, exceeding IEC 61000-4-2, level 4.

The device is housed in a 4-channel, 0.4 mm pitch SOT1178 (XSON9) package. The extremely small package dimensions make this product an excellent choice for portable devices. The pinout is designed for convenient flow-through routing of high-speed signal lines.

Key features and benefits

  • Pb-free, Restriction of Hazardous Substances (RoHS) compliant and free of halogen and antimony (Dark Green compliant)
  • System ESD protection for HDMI 1.3 and HDMI 1.4, DisplayPort, eSATA and LVDS
  • All signal lines with integrated rail-to-rail clamping diodes for downstream ESD protection of ±12 kV, exceeding IEC 61000-4-2, level 4
  • Matched 0.4 mm trace spacing
  • Signal lines with = 0.05 pF matching capacitance between signal pairs
  • Line capacitance of 0.85 pF maximum for each channel
  • 4-channel, XSON9 Pb-free package
  • Design-friendly 'flow-through' signal routing

Key applications

  • Portable devices
  • Mobile handsets, tablet computers
  • TVs, monitors
  • DVD recorders and players
  • Notebooks, mother boards, graphic cards and ports
  • Set-top boxes and game consoles

Selection guide

Type Number of protected lines VRWM (V) Cline typ (pF) ESD rating max
(kV)		 Package Configuration
Unidirectional Bidirectional
IP4285CZ9-TBB 4 0 5.5 0.8 12 SOT1178
(1.0 x 2.1 x 0.5 mm)

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