IP4791CZ12_11 Datasheet, PDF (1/17 Pages) NXP Semiconductors – HDMI ESD protection, level shifter and backdrive protection

IP4791CZ12
HDMI ESD protection, level shifter and backdrive protection
Rev. 3 — 7 January 2011
Product data sheet
1. General description
The IP4791CZ12 is designed to protect mobile High-Definition Multimedia
Interface (HDMI) transmitter interfaces. It includes level shifting for the Data Display
Channel (DDC), Consumer Electronic Control (CEC), hot plug signal and backdrive
protection. In addition, all signals are protected by high-level ElectroStatic
Discharge (ESD) protection diodes.
The level shifting function is required to protect the I/Os against overvoltages when the
transmitter operates at a supply voltage lower than the external devices. The IP4791CZ12
contains active buffers to provide the level shifting function, hot plug detect input and the
CEC pull-up current source.
The ESD protection diodes provide protection from ESD voltages up to ±8 kV, according
to IEC 61000-4-2, level 4.
2. Features and benefits
„ HDMI 1.3 compliant
„ Pb-free, Restriction of Hazardous Substances (RoHS) compliant and free of halogen
and antimony (Dark Green compliant)
„ Robust ESD protection without degradation after multiple ESD strikes
„ Low leakage even after several hundred ESD discharges
„ Bidirectional level shifting buffer provided for DDC clock and data channels
„ Backdrive protection
„ Power management
„ CEC pull-up current source and level shifting buffer
„ Hot plug detect module with pull-down resistor
„ Matched 0.4 mm trace spacing for HDMI type C connector
3. Applications
The IP4791CZ12 can be used with a range of HDMI transmitter devices including:
„ Personal computer
„ Notebook
„ Mobile phone
„ DV camcorder
„ Digital still camera
„ MP3 player