DS26303LN-120+A3 Maxim Integrated Products, DS26303LN-120+A3 Datasheet - Page 58
DS26303LN-120+A3
Manufacturer Part Number
DS26303LN-120+A3
Description
Buffers & Line Drivers 3.3V E1/T1/J1 Short Haul Octal LIU
Manufacturer
Maxim Integrated Products
Datasheet
1.DS26303LN-120A3.pdf
(101 pages)
Specifications of DS26303LN-120+A3
Lead Free Status / Rohs Status
Details
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6.3.2 LIU Transmit Front-End
It is recommended to configure the transmitter’s LIU as described in
resistors are required. The transmitter has internal termination for E1, J1, and T1 modes.
Figure 6-4. LIU Front-End
Table 6-4. LIU Front-End Values
Tx Capacitance
Tx Protection
Rx Transformer 1:2
Tx Transformer 1:2
Tx Decoupling (ATVDD)
Tx Decoupling (ATVDD)
Rx Decoupling (AVDDn)
Rx Decoupling (AVDDn)
Rx Termination
Rx Termination
Voltage Protection
C1
C3
3.3V
3.3V
3.3V
TVS1
MODE
C2
C4
AVSSn
AVDDn
TVSSn
TVDDn
(One Channel)
DS26303
COMPONENT
A75
TRING
RRING
TVS1
RTIP
TTIP
TFr
TFt
C1
C2
C3
C4
C5
A100
Ct
Dt
Rt
A110
30
560pF typical. Adjust for board parasitics for optimal return loss.
International Rectifier: 11DQ04 or 10BQ060
Motorola: MBR0540T1
Pulse: T1124 (0°C to +70°C)
Pulse: T1114 (-40°C to +85°C)
Common decoupling for all eight channels is 68μF.
Recommended decoupling per channel is 0.1μF.
Common decoupling for all eight channels is 68μF.
Common decoupling for all eight channels is 0.1μF.
When in external impedance mode, Rx capacitance for all eight
channels is 0.1μF. Do not populate if using internal impedance
mode.
When in external impedance mode, the two resistors for all modes
are 15.0Ω ±1%. Do not populate if using internal impedance mode.
SGS-Thomson: SMLVT 3V3 (3.3V transient suppressor)
C5
75Ω COAX
DS26303: 3.3V, T1/E1/J1, Short-Haul, Octal Line Interface Unit
58 of 101
Dt
Dt
Dt
Dt
Rt
Rt
120Ω TWISTED
Figure 6-4
Ct
PAIR
and in
TFr
TFt
1:2
1:2
Table
TWISTED PAIR
100Ω/110Ω
Rx Line
6-4. No series
Tx Line
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