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LTC1687IS PDF预览

LTC1687IS

更新时间: 2024-09-24 13:09:47
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
12页 289K
描述
LTC1687 - 52Mbps Precision Delay RS485 Fail-Safe Transceivers; Package: SO; Pins: 14; Temperature Range: -40°C to 85°C

LTC1687IS 技术参数

是否Rohs认证:不符合生命周期:Transferred
零件包装代码:SOIC包装说明:0.150 INCH, PLASTIC, SOP-14
针数:14Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.12Is Samacsys:N
差分输出:YES驱动器位数:1
高电平输入电流最大值:0.000001 A输入特性:DIFFERENTIAL SCHMITT TRIGGER
接口集成电路类型:LINE TRANSCEIVER接口标准:EIA-422; EIA-485
JESD-30 代码:R-PDSO-G14JESD-609代码:e0
长度:8.649 mm湿度敏感等级:1
功能数量:1端子数量:14
最高工作温度:85 °C最低工作温度:-40 °C
最小输出摆幅:1.5 V最大输出低电流:0.004 A
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP14,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):235
电源:5 V认证状态:Not Qualified
最大接收延迟:25 ns接收器位数:1
座面最大高度:1.752 mm子类别:Line Driver or Receivers
最大压摆率:12 mA最大供电电压:5.25 V
最小供电电压:4.75 V标称供电电压:5 V
表面贴装:YES技术:CMOS
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:20
最大传输延迟:25 ns宽度:3.899 mm
Base Number Matches:1

LTC1687IS 数据手册

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LTC1686/LTC1687  
52Mbps Precision Delay  
RS485 Fail-Safe Transceivers  
U
DESCRIPTION  
FEATURES  
The LTC®1686/LTC1687 are high speed, precision delay,  
full-duplex RS485 transceivers that can operate at data  
rates as high as 52Mbps. The devices also meet the  
requirements of RS422.  
Precision Propagation Delay Over Temperature:  
Receiver/Driver: 18.5ns  
High Data Rate: 52Mbps  
Low tPLH/tPHL Skew:  
±3.5ns  
Receiver/Driver: 500ps Typ  
A unique architecture provides very stable propagation  
delays and low skew over a wide common mode and  
ambient temperature range.  
–7V to 12V RS485 Input Common Mode Range  
Guaranteed Fail-Safe Operation Over the Entire  
Common Mode Range  
High Input Resistance: 22k, Even When Unpowered  
Short-Circuit Protected  
Thermal Shutdown Protected  
Driver Maintains High Impedance in Three-State or  
with Power Off  
Single 5V Supply  
Pin Compatible with LTC490/LTC491  
45dB CMRR at 26MHz  
The driver and receiver feature three-state outputs, with  
disabled driver outputs maintaining high impedance over  
the entire common mode range. A short-circuit feature  
detects shorted outputs and substantially reduces driver  
output current. A similar feature also protects the receiver  
output from short circuits. Thermal shutdown circuitry  
protects from excessive power dissipation.  
The receiver has a fail-safe feature that guarantees a high  
output state when the inputs are shorted or are left floating.  
The LTC1686/LTC1687 RS485 transceivers guarantee  
receiver fail-safe operation over the entire common mode  
range (7V to 12V). Receiver input resistance remains  
22k when the device is unpowered or disabled.  
U
APPLICATIONS  
High Speed RS485/RS422 Full Duplex Transceivers  
Level Translator  
Backplane Transceiver  
The LTC1686/LTC1687 operate from a single 5V supply  
and draw only 7mA of supply current.  
STS-1/OC-1 Data Transceiver  
Signal Repeaters  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATION  
10Mbps Data Pulse  
400 Feet Category 5 UTP  
LTC1686  
LTC1686  
DRIVER INPUT  
2V/DIV  
5
3
100Ω  
100Ω  
100Ω  
D
DRIVER  
RECEIVER  
R
D
6
RECEIVER  
INPUT  
1V/DIV  
5V/DIV  
8
7
2
100Ω  
R
DRIVER  
RECEIVER  
RECEIVER  
OUTPUT  
400 FT OF CATEGORY 5 UTP  
100ns/DIV  
1686/87 TA02  
LTC1686/87 • TA01  
1

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