參數(shù)資料
型號： DS21554LB
廠商： Maxim Integrated Products
文件頁數(shù)： 110/124頁
文件大小： 0K
描述： IC TXRX E1 1-CHIP 5V 100-LQFP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
產(chǎn)品變化通告： Product Discontinuation 20/Feb/2012
標(biāo)準(zhǔn)包裝： 90
功能： 單芯片收發(fā)器
接口： E1，HDLC，J1，T1
電路數(shù)： 1
電源電壓： 4.75 V ~ 5.25 V
電流 - 電源： 75mA
工作溫度： 0°C ~ 70°C
安裝類型： 表面貼裝
封裝/外殼： 100-LQFP
供應(yīng)商設(shè)備封裝： 100-LQFP（14x14）
包裝： 托盤
包括： 遠(yuǎn)程和 AIS 警報(bào)檢測器 / 發(fā)生器
DS21354/DS21554 3.3V/5V E1 Single-Chip Transceivers
86 of 124
15.4.
Protected Interfaces
In certain applications, such as connecting to the PSTN, it is required that the network interface be
protected from and resistant to certain electrical conditions. These conditions are divided into two
categories, surge and power line cross. A typical cause of surge is lightening strike. Power-line cross
refers to accidental contact with high-voltage power wiring. For protection against surges, additional
components and PC board layout considerations are required to reroute and dissipate this energy. In a
surge event, the network interface must not be damaged and continue to work after the event. In the event
of a power line contact, components such as fuses or PTCs that can “open” the circuit are required to
prevent the possibility of a fire caused by overheating the transformer. The circuit examples in this data
sheet are for “Secondary Over Voltage Protection” schemes for the line terminating equipment. Primary
protection is typically provided by the network service provide and is external to the equipment.
Figure 15-6 shows an example circuit for the 5V device and Figure 15-7 is an example for the 3.3V
device. In both examples, fuses are used to provide protection against power-line cross. Surge protection
is provided by 470
W input resistors on the receive pair, a transient suppresser, and a diode bridge on the
transmit pair. Resistors R1 to R4 provide surge protection for the fuse. Careful selection of the
transformer allows the use of a fuse that requires no additional surge protection such as the circuit shown
in Figure 15-7. The circuit shown in Figure 15-7 is required for 3.3V operation since additional resistance
in the transmit pair cannot be tolerated. For more information on line interface design, consult the E1 Line
Interface Design Criteria and Secondary Overvoltage Protection application notes available on our
相關(guān)PDF資料
PDF描述
VE-B6R-IY-B1 CONVERTER MOD DC/DC 7.5V 50W
VE-B6M-IY-B1 CONVERTER MOD DC/DC 10V 50W
VE-B6H-IY-B1 CONVERTER MOD DC/DC 52V 50W
VE-B5D-IY-B1 CONVERTER MOD DC/DC 85V 50W
VE-B5B-IY-B1 CONVERTER MOD DC/DC 95V 50W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS21554LB+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3/5V E1 Transceiver 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
DS21554LBN 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
DS21554LBN+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3/5V E1 Transceiver 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
DS21554LN 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3/5V E1 Transceiver 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
DS21554LN+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3/5V E1 Transceiver 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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報(bào)價(jià)

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*