DS26528G Maxim Integrated Products, DS26528G Datasheet - Page 74
DS26528G
Manufacturer Part Number
DS26528G
Description
Network Controller & Processor ICs Octal E1-T1-J1 Singl e-Chip Transceiver (
Manufacturer
Maxim Integrated Products
Datasheet
1.DS26528G.pdf
(276 pages)
Specifications of DS26528G
Product
Framer
Number Of Transceivers
8
Supply Voltage (max)
3.465 V
Supply Voltage (min)
3.135 V
Supply Current (max)
875 mA
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Package / Case
TE-CSBGA
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Figure 8-11. Basic Balanced Network Connections
RING
RING
TIP
TIP
RX
TX
TX
RX
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
T1 and T2
T1 and T2
T3 and T4
F1 to F4
S3 to S6
NAME
S1, S2
S7, S8
Changing S7 and S8 to P1800SC devices provides symmetrical voltage suppresion between tip, ring, and ground.
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 S3/S4 pair and the S5/S6 pair should be at least 50 mils wide to conduct the extra current
from a longitudinal power-cross event.
Alternative component recommendations and line interface circuits can be found by contacting
telecom.support@dalsemi.com
The 560pF on TTIP/TRING must be tuned to your application.
F2
F3
F4
F1
S8
S7
1.25A Slow Blow Fuse
1.25A Slow Blow Fuse
25V (max) Transient Suppressor
180V (max) Transient Suppressor
40V (max) Transient Suppressor
Transformer 1:1CT and 1:136CT (5.0V, SMT)
Transformer 1:1CT and 1:2CT (3.3V, SMT)
Dual Common-Mode Choke (SMT)
S3
S4
S5
S6
DESCRIPTION
or in Application Note 324, which is available at www.maxim-ic.com/AN324.
T3
T4
1:1
T1
2:1
T2
74 of 276
60
560 pF
S1
S2
P1800SC MC
P0300SC MC
P0080SA MC
0.1 uF
PE-68678
PE-65857
SMP 1.25
F1250T
T1136
PART
60
RRING
TTIP
TRING
RTIP
Single Chip Transceiver
Line Interface Unit
DS26528 Octal T1/E1/J1 Transceiver
MANUFACTURER
Teccor Electronics
Teccor Electronics
Teccor Electronics
Teccor Electronics
Dallas
Pulse Engineering
Pulse Engineering
Pulse Engineering
or
Bel Fuse
DVDD
RVDD
DVSS
TVDD
RVSS
TVSS
0.1 uF
0.1 uF
0.01 uF
NOTES
1, 4, 5
2, 3, 5
2, 3, 5
1, 5
1, 5
3.3 V
5
5
5
3.3 V
0.1 uF
68 uF
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