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参数资料
| 型号： | ISL54103IHZ-T7 |
| 厂商： | INTERSIL CORP |
| 元件分类： | 消费家电 |
| 英文描述： | DDC Accelerator (DDCA) |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO5 |
| 封装： | ROHS COMPLIANT, MO-193, SOT-23, 5 PIN |
| 文件页数： | 5/7页 |
| 文件大小： | 181K |
| 代理商： | ISL54103IHZ-T7 |
5
FN6303.1
June 22, 2006
Functional Description
DDC Overview
DDC is a 2-wire serial communication standard based on the
I
2
C standard. Devices communicate to each other using one
clock (SCL) and one data (SDA) line. These are both
bidirectional.
Each signal is connected to a positive supply voltage via a
current-source or pull-up resistor (see “System Diagram” on
page 2). When the bus is free, both lines are HIGH. The
output stages of all devices connected to the bus must have
an open-drain or open-collector to perform the wired-AND
function.
Simple pull-up resistors on the clock and data lines work well
unless there are long signal lines. The combined
capacitance of long cables increases the rise time on the
signal to such an extent that the communication becomes
unreliable or fails to meet the bus timing specifications.
Smaller value resistors can sometimes compensate for the
extra capacitance, but this increases the current
consumption when the signal lines are pulled LOW.
ISL54103 Operation
To improve the operation of the DDC where larger bus
capacitance exists, the ISL54103 provides active pull-up
using switched current sources. When the bus is idle and
both lines are HIGH, a standby pull-up current of 100μA is
used to maintain the signal level while minimizing power
FIGURE 5. V
TRIPH
VOLTAGE
FIGURE 6. I
DD
CURRENT, DDC1 = DDC2 = OPEN
FIGURE 7. BOOST PULL-UP CURRENT vs DDC VOLTAGE
Typical Performance Curves
(Continued)
0.50
0.55
0.60
0.65
0.70
0.45
0.40
0.35
0.30
-40
-20
0
20
40
60
80
100
-60
TEMPERATURE (°C)
I
T
D
-
VDD = 5.5V
VDD = 2.7V
75
80
85
90
95
70
65
60
55
-40
-20
0
20
40
60
80
100
-60
TEMPERATURE (°C)
S
D
VDD = 5.5V
VDD = 2.7V
2.0
2.5
3.0
3.5
1.5
1.0
0.5
0
1
2
3
4
5
0
DDC VOLTAGE (V)
B
O
6
VDD = 5.0V
VDD = 2.7V
ISL54103
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相关代理商/技术参数 |
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|---|---|
| ISL54103IHZ-T7A | 功能描述:接口 - 专用 ISL55020IRZ FL DIFFR CFA W/LW DISTORTIO RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| ISL54105A | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:TMDS Regenerator |
| ISL54105ACRZ | 功能描述:IC TMDS REGENERATOR 72-QFN RoHS:是 类别:集成电路 (IC) >> 接口 - 专用 系列:- 标准包装:3,000 系列:- 应用:PDA，便携式音频/视频，智能电话 接口:I²C，2 线串口 电源电压:1.65 V ~ 3.6 V 封装/外壳:24-WQFN 裸露焊盘 供应商设备封装:24-QFN 裸露焊盘（4x4） 包装:带卷 (TR) 安装类型:表面贴装 产品目录页面:1015 (CN2011-ZH PDF) 其它名称:296-25223-2 |
| ISL54105ACRZ-EVALZ | 功能描述:EVAL BOARD FOR ISL54105ACRZ RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:* 标准包装:1 系列:PCI Express® (PCIe) 主要目的:接口，收发器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要属性:- 次要属性:- 已供物品:板 |
| ISL54105CRZ | 功能描述:IC TMDS REGENERATOR 72-QFN RoHS:是 类别:集成电路 (IC) >> 接口 - 专用 系列:- 标准包装:3,000 系列:- 应用:PDA，便携式音频/视频，智能电话 接口:I²C，2 线串口 电源电压:1.65 V ~ 3.6 V 封装/外壳:24-WQFN 裸露焊盘 供应商设备封装:24-QFN 裸露焊盘（4x4） 包装:带卷 (TR) 安装类型:表面贴装 产品目录页面:1015 (CN2011-ZH PDF) 其它名称:296-25223-2 |
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