DS26503L+ Maxim Integrated Products, DS26503L+ Datasheet - Page 91
DS26503L+
Manufacturer Part Number
DS26503L+
Description
IC T1/E1/J1 BITS ELEMENT 64-LQFP
Manufacturer
Maxim Integrated Products
Type
BITS Elementr
Datasheet
1.DS26503L.pdf
(122 pages)
Specifications of DS26503L+
Voltage - Supply
3.135 V ~ 3.465 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
64-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Frequency-max
-
Output
-
Input
-
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Figure 13-5. Software-Selected Termination, Longitudinal Protection
Table 13-2. Component List (Software-Selected Termination, Longitudinal
Protection)
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
S3, S4, S5, S6
T1 and T2
T3 and T4
S1 and S2
S7 and S8
F1 to F4
NAME
T3 and T4 are optional. For more information, contact the Telecom Support Group at
www.maxim-ic.com/support.
A list of alternate transformer part numbers and manufacturers is available 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.
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.
1.25A slow blow fuse
25V (max) transient suppressor (Note 1)
180V (max) transient suppressor (Note 1)
40V (max) transient suppressor
Transformer 1:1CT and 1:136CT (5.0V, SMT) (Note 2)
Transformer 1:1CT and 1:2CT (3.3V, SMT) (Note 2)
Dual common-mode choke (SMT)
DESCRIPTION
91 of 122
DS26503 T1/E1/J1 BITS Element
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