參數(shù)資料
型號： DS21349Q+
廠商： Maxim Integrated Products
文件頁數(shù)： 20/35頁
文件大?。?/td> 0K
描述： IC LIU T1/J1 3.3V 28-PLCC
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 37
類型： 線路接口裝置（LIU）
電源電壓： 3.135 V ~ 3.465 V
安裝類型： 表面貼裝
封裝/外殼： 28-LCC（J 形引線）
供應(yīng)商設(shè)備封裝： 28-PLCC（11.51x11.51）
包裝： 管件
DS21349
27 of 35
11. NETWORK INTERFACE
Transformer specifications are listed in Table 11-A and Table 11-B. Table 11-C illustrates the series
resistance necessary for the basic interface and is associated with different transformer turns ratios.
Smaller turns ratios result in lower power-supply requirements. However, series resistance provides
added protection from potentially damaging voltages that can occur during lightning strikes. A basic
network interface is illustrated in Figure 11-1. For a complete discussion of network interface design,
refer to Application Note 324: T1/E1 Network Interface Design.
Table 11-A. Specifications for Receive Transformer
SPECIFICATION
RECOMMENDED VALUE
Turns Ratio (all applications)
1:1 ±2%
Primary Inductance
600
H minimum
Leakage Inductance
1.0
H maximum
Interwinding Capacitance
40pF maximum
Receive Transformer DC Resistance
Primary (Device Side)
Secondary
2 maximum
Table 11-B. Specifications for Transmit Transformer
SPECIFICATION
RECOMMENDED VALUE
Turns Ratio, 3.3V
1:3 ±2%
Primary Inductance
600
H minimum
Leakage Inductance
1.0
H maximum
Interwinding Capacitance
40pF maximum
Transmit Transformer DC Resistance
Primary (Device Side)
Secondary
1.0 maximum
2.0 maximum
Table 11-C. Transformer Turns Ratio vs. Series Resistance
XFMR1
(CR4.0)
XFMR2
(CR4.1)
OPERATING
VOLTAGE
(V)
APPLICATION
N
Rt ()
Long/Short
0
3.3
D4
1:3
0
1:2
0
1
3.3
Long/Short
1:3
3
1:2.5
0
1
0
3.3
Long/Short
1:3
1
1:2
0
1
3.3
Long/Short
1:3
3
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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: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
DS21349Q+ 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
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: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
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