參數(shù)資料
型號(hào): DS26503L+
廠商: Maxim Integrated Products
文件頁數(shù): 114/122頁
文件大小: 0K
描述: IC T1/E1/J1 BITS ELEMENT 64-LQFP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 160
類型: BITS 元件,多路復(fù)用器
PLL:
主要目的: T1/E1
輸入: 時(shí)鐘
輸出: 時(shí)鐘
電路數(shù): 1
比率 - 輸入:輸出: 2:2
差分 - 輸入:輸出: 無/無
頻率 - 最大: 6.312MHz
電源電壓: 3.135 V ~ 3.465 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 64-LQFP
供應(yīng)商設(shè)備封裝: 64-LQFP(10x10)
包裝: 托盤
產(chǎn)品目錄頁面: 1430 (CN2011-ZH PDF)
DS26503 T1/E1/J1 BITS Element
91 of 122
Figure 13-5. Software-Selected Termination, Longitudinal Protection
Table 13-2. Component List (Software-Selected Termination, Longitudinal
Protection)
NAME
DESCRIPTION
F1 to F4
1.25A slow blow fuse
S1 and S2
25V (max) transient suppressor (Note 1)
S3, S4, S5, S6
180V (max) transient suppressor (Note 1)
S7 and S8
40V (max) transient suppressor
Transformer 1:1CT and 1:136CT (5.0V, SMT) (Note 2)
T1 and T2
Transformer 1:1CT and 1:2CT (3.3V, SMT) (Note 2)
T3 and T4
Dual common-mode choke (SMT)
Note 1:
T3 and T4 are optional. For more information, contact the Telecom Support Group at
Note 2:
A list of alternate transformer part numbers and manufacturers is available at
Note 3:
The layout from the transformers to the network interface is critical. Traces should be at least 25
mils wide and separated from other circuit lines by at least 150 mils. The area under this portion
of the circuit should not contain power planes.
Note 4:
Some T1 (never in E1) applications source or sink power from the network-side center taps of
the Rx/Tx transformers.
Note 5:
The ground trace connected to the S2/S3 pair and the S4/S5 pair should be at least 50 mils wide
to conduct the extra current from a longitudinal power-cross event.
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