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IP4787CZ32

DVI and HDMI interface ESD protection, DDC/CEC buffering, hot plug handling and backdrive protection

The IP4787CZ32 is designed to protect High-Definition Multimedia Interface (HDMI) receiver interfaces. It includes HDMI 5 V power management, Display Data Channel (DDC) buffering and decoupling, hot plug drive, backdrive protection, Consumer Electronic Control (CEC) buffering and decoupling, and ±12 kV contact ElectroStatic Discharge (ESD) protection for all external I/Os, exceeding the IEC 61000-4-2, level 4 standard.

The IP4787CZ32 incorporates Transmission Line Clamping (TLC) technology on the high-speed Transition-Minimized Differential Signaling (TMDS) lines to simplify routing and help reduce impedance discontinuities. All TMDS lines are protected by an impedance-matched diode configuration that minimizes impedance discontinuities caused by typical shunt diodes.

The 5 V power management enables host access to the [Extended Display Identification Data (EDID)] memory even if no HDMI plug is connected. The overall load to the 5 V line is according to the HDMI requirements.

The DDC lines use a buffering concept which decouples the internal capacitive load from the external capacitive load for use with standard Complementary Metal Oxide Semiconductor (CMOS) or Low Voltage Transistor-Transistor Logic (LVTTL) I/O cells down to 1.2 V. This buffering also redrives the DDC and CEC signals, allowing the use of longer or cheaper HDMI cables with a higher capacitance. The internal hot plug drive module simplifies the application of the HDMI receiver to control the hot plug signal.

All lines provide appropriate integrated pull-ups and pull-downs for HDMI compliance and backdrive protection to guarantee that HDMI interface signals are not pulled down if the system is powered down or enters Standby mode. Only a single external capacitor is required for operation.

This product has been discontinued

Features and benefits

  • HDMI 2.0 and all backward compatible standards are supported
  • 6.0 Gbps TMDS bit rate (600 Mcsc TMDS character rate) compatible
  • Supports UHD 4k (2160p) 60 Hz display modes
  • Impedance matched 100 Ω differential transmission line ESD protection for TMDS lines (±10 Ω). No Printed-Circuit Board (PCB) pre-compensation required
  • Simplified flow-through routing utilizing less overall PCB space
  • DDC capacitive decoupling between system side and HDMI connector side and buffering to drive cable with high capacitive load (> 700 pF/25 m)
  • All external I/O lines with ESD protection of at least ±12 kV, exceeding the IEC 61000-4-2, level 4 standard
  • Hot plug drive module
  • Utility biasing module (HEAC compliant)
  • CEC buffering and isolation, with integrated backdrive-protected 26 kΩ pull-up
  • Robust ESD protection without degradation after repeated ESD strikes
  • Highest integration in a small footprint, PCB level, optimized RF routing, 32-pin HVQFN leadless package

Applications

  • The IP4787CZ32 can be used for a wide range of HDMI sink devices, consumer and computing electronics:
    • Digital High-Definition (HD) TV
    • Set-top box
    • PC monitor
    • Projector
    • Multimedia audio amplifier
    • HDMI picture performance quality enhancer module
    • Digital Visual Interface (DVI)

Package

All type numbers in the table below are discontinued.

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
IP4787CZ32 IP4787CZ32,118
(934066112118)		 Obsolete 4787 no package information
IP4787CZ32Y
(934066112518)		 Obsolete 4787

Environmental information

All type numbers in the table below are discontinued.

Type number Orderable part number Chemical content RoHS RHF-indicator
IP4787CZ32 IP4787CZ32,118 IP4787CZ32 rohs rhf rhf
IP4787CZ32 IP4787CZ32Y IP4787CZ32 rohs rhf rhf
Quality and reliability disclaimer

Documentation (1)

File name Title Type Date
IP4787CZ32 DVI and HDMI interface ESD protection, DDC/CEC buffering, hot plug handling and backdrive protection Data sheet 2015-01-06

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