參數(shù)資料
型號: P0300SCRP
英文描述: MCU CMOS 44 LD 20MHZ 8K OTP, -40C to +125C, 44-MQFP, TRAY
中文描述: SIDAC的| 40V的五(公報)最大| 800mA的我(縣)|的DO - 214AA
文件頁數(shù): 58/161頁
文件大小: 986K
代理商: P0300SCRP
Analog Line Cards
SIDACtor
Data Book
3 - 18
Teccor Electronics
(972)580-7777
%,
Because line cards are highly susceptible to transient voltages, network hazards such
as lightning and power cross conditions pose a serious threat to equipment deployed
at the central office and in remote switching locations. To minimize this threat,
adequate levels of protection must be designed to ensure reliable operation and
regulatory compliance.
Protection Requirements
When designing over voltage protection for analog line cards, it is often necessary to
provide both on-hook (relay) and off-hook (SLIC) protection. Figure 3-18 shows this
being accomplished in two stages.
Figure 3-18 SLIC Overview
Applicable Regulatory Requirements
GR 1089-CORE
ITU-T K.20
FCC Part 68
UL 1459
UL 1950
R
E
L
A
Y
S
L
I
C
On Hook
Protection
Off Hook
Protection
F1250T
F1250T
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