DS26502LN+ Maxim Integrated Products, DS26502LN+ Datasheet - Page 90
![IC T1/E1/J1 64KCC ELEMENT 64LQFP](/photos/6/50/65017/64-lqfp_21-0083_sml.jpg)
DS26502LN+
Manufacturer Part Number
DS26502LN+
Description
IC T1/E1/J1 64KCC ELEMENT 64LQFP
Manufacturer
Maxim Integrated Products
Type
BITS Elementr
Datasheet
1.DS26502LN.pdf
(125 pages)
Specifications of DS26502LN+
Voltage - Supply
3.135 V ~ 3.465 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
64-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Frequency-max
-
Output
-
Input
-
- Current page: 90 of 125
- Download datasheet (4Mb)
13.8 Recommended Circuits
Figure 13-4. Software-Selected Termination, Metallic Protection
Table 13-1. Component List (Software-Selected Termination, Metallic
Protection)
RING
RING
TIP
TIP
Note 1:
Note 2:
Note 3:
Note 4:
RX
TX
TX
RX
T1 and T2
T3 and T4
F1 and F2
S1 and S2
S3 andS4
NAME
F2
F1
T3 and T4 are optional. For more information, contact the Telecom Support Group at
www.maxim-ic.com/support.
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.
Some T1 (never in E1) applications source or sink power from the network-side center taps of
the Rx/Tx transformers.
A list of transformer part numbers and manufacturers is available by contacting
www.maxim-ic.com/support.
S4
S3
1.25A slow blow fuse
Transformer 1:1CT and 1:136CT (5.0V, SMT) (Note 1)
Transformer 1:1CT and 1:2CT (3.3V, SMT) (Note 1)
25V (max) transient suppressor
77V (max) transient suppressor
Dual common-mode choke (SMT)
T3
T4
DESCRIPTION
1:1
T1
2:1
T2
90 of 125
60
S1
S2
10uF
0.1 uF
60
RRING
TTIP
TRING
RTIP
DS26502
DVDD
RVDD
DVSS
TVDD
RVSS
TVSS
0.1 uF
0.1 uF
0.01 uF
3.3 V
3.3 V
DS26502
0.1 uF
68 uF
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