參數(shù)資料
型號(hào): DS26502LN+
廠商: Maxim Integrated Products
文件頁數(shù): 117/125頁
文件大?。?/td> 0K
描述: IC T1/E1/J1 64KCC ELEMENT 64LQFP
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: 2:3
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: -40°C ~ 85°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)
DS26502
91 of 125
Figure 13-5. Software-Selected Termination, Longitudinal Protection
DS26502
DVDD
DVSS
TVSS
TVDD
RVSS
RVDD
0.01 uF
0.1 uF
68 uF
0.1 uF
3.3 V
TTIP
TRING
RTIP
RRING
S1
S2
S3
S4
S5
S6
S7
S8
T1
T2
T3
T4
2:1
1:1
F1
F2
F3
F4
TX
TIP
TX
RING
RX
TIP
RX
RING
60
0.1 uF
10uF
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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