IP4777CZ38 DVI and HDMI interface ESD protection, DDC buffering, hot plug control and backdrive protection Rev. 02 12 February 2009 Product data sheet 1. General description The IP4777CZ38 is designed for HDMI transmitter host interface protection. The IP4777CZ38 includes DDC buffering and decoupling, hot plug detect, backdrive protection, CEC slew rate control, and high-level ESD protection diodes for the TMDS lines. The DDC lines use a new buffering concept which decouples the internal capacitive load from the external capacitive load. This allows greater design exibility of the DDC lines with respect to the maximum load of 50 pF specied in the HDMI 1.3 specication. This buffering also boosts the DDC signals, allowing the use of longer HDMI cables having a higher capacitive load than 700 pF. The CEC slew rate limiter prevents ringing on the CEC line. The internal hot plug detect module simplies the application of the HDMI transmitter to control the hot plug signal. The DDC, hot plug and CEC lines are backdrive protected to guarantee HDMI interface signals are not pulled down if the system is powered down or enters standby mode. All TMDS intra-pairs are protected by a special diode conguration offering a low line capacitance of 0.7 pF only (to ground) and 0.05 pF between the TMDS pairs. These diodes provide protection to components downstream from ESD voltages of up to 8kV contact in accordance with the IEC 61000-4-2, level 4 standard. 2. Features n HDMI 1.3 compliant n Pb-free and RoHS compliant Dark Green n Robust ESD protection without degradation after several ESD strikes n Low leakage even after several hundred ESD discharges n Very high diode switching speed (ns) and low line capacitance of 0.7 pF to ground and 0.05 pF between channel can ensure signal integrity n DDC capacitive decoupling between system side and HDMI connector side and buffering to drive cable with high capacitive load (> 700 pF) n Hot plug detect module n CEC ringing prevention by slew rate limiter n All TMDS lines with integrated rail-to-rail clamping diodes with downstream ESD protection of 8 kV in accordance with IEC 61000-4-2, level 4 standard n Matched 0.5 mm trace spacingIP4777CZ38 NXP Semiconductors DVI and HDMI interface ESD protection n Highest integration in a small footprint, PCB-level, optimized RF routing, 38-pin TSSOP lead-free package 3. Applications n The IP4777CZ38 can be used for a wide range of HDMI source devices, consumer and computing electronics e.g.: u SD and HD DVD player u Set-top box u PC graphic card u Game console u HDMI picture performance quality enhancer module 4. Ordering information Table 1. Ordering information Type number Package Name Description Version IP4777CZ38 TSSOP38 plastic thin shrink small outline package: 38 leads SOT510-1 body width 4.4 mm lead pitch 0.5 mm IP4777CZ38/V IP4777CZ38 2 NXP B.V. 2009. All rights reserved. Product data sheet Rev. 02 12 February 2009 2 of 25