IP4777CZ38 DVI and HDMI interface ESD protection, DDC buffering, hot plug control and backdrive protection

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 flexibility of the DDC lines with respect to the maximum load of 50 pF specified in the HDMI 1.3 specification. 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 simplifies 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 configuration 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 ±8 kV contact in accordance with the IEC 61000-4-2, level 4 standard

产品特点 Features

HDMI 1.3 compliant
Pb-free and RoHS compliant; Dark Green
Robust ESD protection without degradation after several ESD strikes
Low leakage even after several hundred ESD discharges
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
DDC capacitive decoupling between system side and HDMI connector side and buffering to drive cable with high capacitive load (> 700 pF)
Hot plug detect module
CEC ringing prevention by slew rate limiter
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
Matched 0.5 mm trace spacing
Highest integration in a small footprint, PCB-level, optimized RF routing, 38-pin TSSOP lead-free package

应用

SD and HD DVD player
Set-top box
PC graphic card
Game console
HDMI picture performance quality enhancer module

产品实物图

封装

型号	订购码 (12NC)	可订购的器件编号	产品状态	封装
IP4777CZ38/V	9340 620 58118	IP4777CZ38/V,118	量产	TSSOP38 (SOT510-1)

订货和供应

型号	订购码 (12NC)	可订购的器件编号	化学成分
IP4777CZ38/V	9340 620 58118	IP4777CZ38/V,118	IP4777CZ38/V

IP4777CZ38 技术支持

档案名称	标题	类型	格式
IP4777CZ38	DVI and HDMI interface ESD protection, DDC buffering, hot plug control and backdrive protection	Data sheet	pdf
R_10001	Guideline for the laser marking layout of WLCSP devices	Handling precautions	pdf