參數(shù)資料
型號: DS21348T
英文描述: 3.3V E1/T1/J1 Line Interface
中文描述: 3.3 E1/T1/J1線路接口
文件頁數(shù): 50/73頁
文件大?。?/td> 551K
代理商: DS21348T
DS21348/Q348
50 of 73
Figure 9-2
PROTECTED INTERFACE USING INTERNAL RECEIVE
TERMINATION
NOTES:
1.
All resistor values are ±1%.
2.
C1 = C2 = 0.1μF.
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 9-1). No return loss is required
for T1 applications.
8.
The transmit transformer turns ratio (N) would be 1:2 for 3.3V operation.
9.
The 68 F 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)
DS21348
1.0μF
(non-
polarized)
VDD (21)
VSS (22)
0.1μF
VDD (36)
VSS (35)
0.1μF
+VDD
0.01μF
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
(optional)
+VDD
C2
D5
D6
D7
D8
Rt
Rt
68μF
S
Transmit
Line
Rp
Fuse
Rp
Fuse
(optional)
10μF
10μF
0.1μF
60
60
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS21348T+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流(最大值):595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21348TB 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流(最大值):595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21348TN 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流(最大值):595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21348TN+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流(最大值):595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21348TNB 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流(最大值):595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray