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PTN3381BBS,518

更新时间： 2024-11-13 14:26:55
品牌 Logo 应用领域
恩智浦 - NXP 商用集成电路
页数 文件大小 规格书
30页 218K
描述
PTN3381B - Enhanced performance HDMI/DVI level shifter with voltage regulator, dongle detect support and active DDC buffer QFN 48-Pin

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PTN3381BBS,518 技术参数

是否Rohs认证： 符合生命周期：Active
零件包装代码：QFN包装说明：HVQCCN,
针数：48Reach Compliance Code：compliant
风险等级：1.62商用集成电路类型：CONSUMER CIRCUIT
JESD-30 代码：S-PQCC-N48长度：7 mm
湿度敏感等级：3功能数量：1
端子数量：48最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：HVQCCN封装形状：SQUARE
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：NOT SPECIFIED
座面最大高度：1 mm最大供电电压 (Vsup)：3.6 V
最小供电电压 (Vsup)：3 V表面贴装：YES
温度等级：INDUSTRIAL端子形式：NO LEAD
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：7 mm
Base Number Matches：1

PTN3381BBS,518 数据手册

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PTN3381B  
Enhanced performance HDMI/DVI level shifter with voltage  
regulator, dongle detect support and active DDC buffer  
Rev. 2 — 15 October 2010  
Product data sheet  
1. General description  
The PTN3381B is a high-speed level shifter device which converts four lanes of low-swing  
AC-coupled differential input signals to DVI v1.0 and HDMI v1.3a compliant open-drain  
current-steering differential output signals, up to 1.65 Gbit/s per lane. Each of these lanes  
provides a level-shifting differential buffer to translate from low-swing AC-coupled  
differential signaling on the source side, to TMDS-type DC-coupled differential  
current-mode signaling terminated into 50 Ω to 3.3 V on the sink side. Additionally, the  
PTN3381B provides a single-ended active buffer for voltage translation of the HPD signal  
from 5 V on the sink side to 3.3 V on the source side and provides a channel with active  
buffering and level shifting of the DDC channel (consisting of a clock and a data line)  
between 3.3 V source-side and 5 V sink-side. The DDC channel is implemented using  
active I2C-bus buffer technology providing capacitive isolation, redriving and level shifting  
as well as disablement (isolation between source and sink) of the clock and data lines.  
To provide the highest level of integration in external adapter (or: dongle) applications,  
PTN3381B includes an onboard 5 V DC regulator. Its output is designed to provide the  
required 5 V power supply to the DVI or HDMI connector, thereby eliminating the need for  
a separate external regulator. The on-board regulator needs only two external capacitors  
to operate, and its output is active whenever a valid 3.3 V is applied to the PTN3381B VDD  
pins.  
The low-swing AC-coupled differential input signals to the PTN3381B typically come from  
a display source with multi-mode I/O, which supports multiple display standards, e.g.,  
DisplayPort, HDMI and DVI. While the input differential signals are configured to carry DVI  
or HDMI coded data, they do not comply with the electrical requirements of the DVI v1.0  
or HDMI v1.3a specification. By using PTN3381B, chip set vendors are able to implement  
such reconfigurable I/Os on multi-mode display source devices, allowing the support of  
multiple display standards while keeping the number of chip set I/O pins low. See  
Figure 1.  
The PTN3381B main high-speed differential lanes feature low-swing self-biasing  
differential inputs which are compliant to the electrical specifications of DisplayPort  
Standard v1.1 and/or PCI Express Standard v1.1, and open-drain current-steering  
differential outputs compliant to DVI v1.0 and HDMI v1.3a electrical specifications. The  
I2C-bus channel actively buffers as well as level-translates the DDC signals for optimal  
capacitive isolation. Its I2C-bus control block also provides for optional software HDMI  
dongle detect by issuing a predetermined code sequence upon a read command to an  
I2C-bus specified address. The PTN3381B also supports power-saving modes in order to  
minimize current consumption when no display is active or connected.  
The PTN3381B is a fully featured HDMI as well as DVI level shifter. It is functionally  
equivalent to PTN3361B but provides an onboard 5 V regulator.  
 
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