参数资料
型号: DS2148T
厂商: Maxim Integrated Products
文件页数: 46/73页
文件大小: 0K
描述: IC LIU E1/T1/J1 5V 44-TQFP
产品培训模块: Lead (SnPb) Finish for COTS
产品变化通告: Product Discontinuation 20/Feb/2012
标准包装: 160
类型: 线路接口装置(LIU)
驱动器/接收器数: 1/1
规程: T1/E1/J1
电源电压: 4.75 V ~ 5.25 V
安装类型: 表面贴装
封装/外壳: 44-TQFP
供应商设备封装: 44-TQFP(10x10)
包装: 管件
DS2148/DS21Q48
50 of 73
Figure 7-2. Protected Interface Using Internal Receive Termination
NOTES:
1) All resistor values are ±1%.
2) C1 = C2 = 0.1F.
3) S is a 6V transient suppresser.
4) D1 to D8 are Schottky diodes.
5) The fuses are optional to prevent AC power line crosses from compromising the transformers.
6) Rp resistors exist to keep the Fuses from opening during a surge. If they are used, then the 60
receive termination resistance must
be adjusted to match the line impedance.
7) The Rt resistors are used to increase the transmitter return loss (Table 7-1). No return loss is required for T1 applications.
8) The transmit transformer turns ratio (N) would be 1:1.36 for 5V operation.
9) The 68F is used to keep the local power plane potential within tolerance during a surge.
RTIP
RRING
TTIP
TRING
Receive
Line
N:1
(larger winding
toward the network)
DS2148
0.47uF
(non-
polarized)
VDD (21)
VSS (22)
0.1uF
VDD (36)
VSS (35)
0.1uF
+VDD
0.01uF
2.048MHz
(this clock can also
be 1.544MHz for T1
only applications)
MCLK
+VDD
S
C1
D1
D2
D3
D4
1:1
Rp
Fuse
Rp
Fuse
+VDD
C2
D5
D6
D7
D8
Rt
68uF
S
(optional)
Transmit
Line
Rp
Fuse
Rp
Fuse
(optional)
10uF
0.1uF
60
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相关代理商/技术参数
参数描述
DS2148T+ 功能描述:网络控制器与处理器 IC 5V 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
DS2148TA2 功能描述:网络控制器与处理器 IC 5V 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
DS2148TB 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
DS2148TC1 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
DS2148TN 功能描述:网络控制器与处理器 IC 5V 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