DS2149DK/DS21349DK T1/J1 Line Interface Unit Design Kit
LINE-SIDE CONNECTIONS
The DS2149DK/DS21349DK implements the Tx and Rx line interface networks recommended in the DS2149 and
DS21349 data sheets and as shown in Figure 2 . To connect the DS2149DK/DS21349DK to T1 or J1 test
equipment, connect the equipment to the RJ48 connector or to the two bantam connectors, J2 and J3. Please
notice the relays disconnecting TTIP and TRING on T1 and T2. These relays disconnect the series resistors R4
and R5, which is recommended for some long-haul configurations. Pin 16 on the system connector serves as the
control line for the relays. When pin 16 is high, T2 is enabled with TTIP and TRING. When it is held low, T1 is
enabled with TTIP and TRING.
Figure 2. Line-Side Circuitry
J2
TRANSMIT
T1
C2
1 m F
TTIP
TRING
T2
R4
4.7 W
(1%)
R5
Dallas
Semiconductor
DS2149/DS21349
J3
RECEIVE
T3
4.7 W
(1%)
RTIP
R9
R8
50 W
(1%)
4 of 14
50 W
(1%)
RRING
相关PDF资料
DS21352DK KIT DESIGN FOR DS21352
DS21354DK KIT DESIGN FOR DS21354
DS21458DK KIT DESIGN FOR G511DS21458
DS2156DK KIT DESIGN FOR DS2156
DS21Q348DK KIT DESIGN FOR DS21Q348
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DS2436K KIT DEMO BATT ID/MON CHIP DS2436
DS2438K KIT DEMO SMART BATT MON DS2438
相关代理商/技术参数
DS21349Q 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流(最大值):595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS21349Q/T&R+ 制造商:Maxim Integrated Products 功能描述:FRAMER J1/T1 3.3V 28PLCC - Tape and Reel
DS21349Q/T&R 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流(最大值):595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS21349Q+ 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流(最大值):595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS21349Q+T&R 制造商:Maxim Integrated Products 功能描述:FRAMER J1/T1 3.3V 28PLCC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC LIU T1/J1 3.3V 28-PLCC
DS21349Q+T&R 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流(最大值):595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS21349QN 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流(最大值):595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray