參數(shù)資料
型號: P2353AA
英文描述: MCU CMOS 68 LD 33MHZ 8K EPRM, 0C to +70C, 68-PLCC, TUBE
中文描述: SIDAC的| 270V的五(公報)最大| 800mA的我(縣)|對220VAR
文件頁數(shù): 54/161頁
文件大?。?/td> 986K
代理商: P2353AA
Digital Transmission Equipment
SIDACtor
Data Book
3 - 14
Teccor Electronics
(972)580-7777
Pair Gain Circuit Protection
A digital pair gain system differs from an ISDN circuit in that ring detection, ring trip,
ring forward, and off hook detection are carried within the 64 kbps bit stream for each
channel rather than using a separate D channel. The pair gain system also uses loop
powering from 10V up to 145V with a typical maximum current of 75mA.
Protection Circuitry
In Figure 3-14, longitudinal protection is required at the Central Office Terminal (COT)
interface because of the ground connection used with loop powering. This is
accomplished using two P1800SC SIDACtor
s for over voltage protection and two
F1250T TeleLink fuses (one on TIP, one on RING) for over current protection. For the
U-interface side of the coupling transformer, additional over voltage protection is
shown using the P0080SA SIDACtor.
For the Customer Premises (CP) and the Remote Terminal (RT) interfaces where an earth
ground connection is not utilized, only metallic protection is required. Figure 3-15 shows
metallic protection being satisfied using a single P3100SC across TIP and RING and a
single F1250T on either Tip or Ring.
Component Selection
The
SC
SIDACtor and F1250T TeleLink were chosen because both components
meet GR 1089 surge immunity requirements without the use of additional series
resistance. The voltage rating of the P1800SC was selected to ensure coordination
with loop powering up to 150V. The voltage rating of the P3100SC was selected to
ensure coordination with POTS ringing and battery voltages.
Figure 3-13 Pair Gain Overview
Switching
System
Line powered
DSL 2-Wire,
160 kbps
2B1Q
POTS
Line 1
Line 2
MDF
Central Office
Terminal (COT)
VF
1
VF
2
HF
VF
1
VF
2
HF
Remote
Terminal
Remote Terminal (RT)
building or pedestal
mounted
POTS
Customer
Premises
(CP)
Central Office (CO)
相關(guān)PDF資料
PDF描述
P2353AARP SIDAC|270V V(BO) MAX|800MA I(S)|TO-220VAR
P2353AB MCU CMOS 64 LD 33MHZ 8K EPRM, -40C to +85C, 64-TQFP, TRAY
P2353ABRP MCU CMOS 64 LD 16MHZ 8K EPRM, -40C to +85C, 64-TQFP, T/R
P2353AC MCU CMOS 64 LD LOW PWR, 0C to +70C, 64-TQFP, TRAY
P2353ACRP MCU CMOS 64 LD LOW PWR, -40C to +85C, 64-TQFP, TRAY
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
P2353AA_ 功能描述:硅對稱二端開關(guān)元件 USE 576-P2353AA RoHS:否 制造商:Bourns 轉(zhuǎn)折電流 VBO:40 V 最大轉(zhuǎn)折電流 IBO:800 mA 不重復(fù)通態(tài)電流: 額定重復(fù)關(guān)閉狀態(tài)電壓 VDRM:25 V 關(guān)閉狀態(tài)漏泄電流(在 VDRM IDRM 下): 保持電流(Ih 最大值):50 mA 開啟狀態(tài)電壓:5 V 關(guān)閉狀態(tài)電容 CO:120 pF 最大工作溫度:+ 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-214AA
P2353AA60 功能描述:硅對稱二端開關(guān)元件 3Chp 200V 50A RoHS:否 制造商:Bourns 轉(zhuǎn)折電流 VBO:40 V 最大轉(zhuǎn)折電流 IBO:800 mA 不重復(fù)通態(tài)電流: 額定重復(fù)關(guān)閉狀態(tài)電壓 VDRM:25 V 關(guān)閉狀態(tài)漏泄電流(在 VDRM IDRM 下): 保持電流(Ih 最大值):50 mA 開啟狀態(tài)電壓:5 V 關(guān)閉狀態(tài)電容 CO:120 pF 最大工作溫度:+ 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-214AA
P2353AAL 功能描述:硅對稱二端開關(guān)元件 3Chp 200V 50A RoHS:否 制造商:Bourns 轉(zhuǎn)折電流 VBO:40 V 最大轉(zhuǎn)折電流 IBO:800 mA 不重復(fù)通態(tài)電流: 額定重復(fù)關(guān)閉狀態(tài)電壓 VDRM:25 V 關(guān)閉狀態(tài)漏泄電流(在 VDRM IDRM 下): 保持電流(Ih 最大值):50 mA 開啟狀態(tài)電壓:5 V 關(guān)閉狀態(tài)電容 CO:120 pF 最大工作溫度:+ 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-214AA
P2353AAL60 功能描述:硅對稱二端開關(guān)元件 3Chp 200V 50A RoHS:否 制造商:Bourns 轉(zhuǎn)折電流 VBO:40 V 最大轉(zhuǎn)折電流 IBO:800 mA 不重復(fù)通態(tài)電流: 額定重復(fù)關(guān)閉狀態(tài)電壓 VDRM:25 V 關(guān)閉狀態(tài)漏泄電流(在 VDRM IDRM 下): 保持電流(Ih 最大值):50 mA 開啟狀態(tài)電壓:5 V 關(guān)閉狀態(tài)電容 CO:120 pF 最大工作溫度:+ 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-214AA
P2353AALRP 功能描述:硅對稱二端開關(guān)元件 3Chp 200V 50A RoHS:否 制造商:Bourns 轉(zhuǎn)折電流 VBO:40 V 最大轉(zhuǎn)折電流 IBO:800 mA 不重復(fù)通態(tài)電流: 額定重復(fù)關(guān)閉狀態(tài)電壓 VDRM:25 V 關(guān)閉狀態(tài)漏泄電流(在 VDRM IDRM 下): 保持電流(Ih 最大值):50 mA 開啟狀態(tài)電壓:5 V 關(guān)閉狀態(tài)電容 CO:120 pF 最大工作溫度:+ 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-214AA