82V2048SBB IDT, Integrated Device Technology Inc, 82V2048SBB Datasheet - Page 20

• Manufacturer Part Number: 82V2048SBB
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 82V2048SBB

• Screening Level: Industrial
• Mounting: Surface Mount
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Lead Free Status / RoHS Status: Not Compliant

Table-13 Transformer Specifications
1.
IDT82V2048S OCTAL T1/E1 SHORT HAUL LIU WITH SINGLE ENDED OPTION
2.8
are driven through a pair of 9.5
STD Temp.
Pulse T1124 transformer is recommended to be used in Standard (STD) operating temperature range (0°C to 70°C), while Pulse T1114 transformer is recommended to be used in
Extended (EXT) operating temperature range is -40°C to +85°C.
All transmit driver power supplies must be 5.0 V.
In E1 mode, despite the power supply voltage, the 75
T1124
TRANSMIT DRIVER POWER SUPPLY
Part No.
EXT Temp.
T1114
Figure-13 External Transmit/Receive Line Circuitry (Single Ended Receive Interface)
Figure-12 External Transmit/Receive Line Circuitry (Differential Receive Interface)
NOTE:
1. Pulse T1124 transformer is recommended to be used in Standard (STD) operating temperature range (0°C to 70°C), while Pulse T1114 transformer is
recommended to be used in Extended (EXT) operating temperature range is -40°C to +85°C. See Transformer Specifications Table for details.
2. Typical value. Adjust for actual board parasitics to obtain optimum return loss.
3. Common decoupling capacitor for all VDDT and GNDT pins. One per chip.
4. The line input signal is coupled to pin RTIPn with a 100 nF capacitor while pin RRINGn, should be AC coupled to ground through a 100 nF capacitor.
NOTE:
1. Pulse T1124 transformer is recommended to be used in Standard (STD) operating temperature range (0°C to 70°C), while Pulse T1114
transformer is recommended to be used in Extended (EXT) operating temperature range is -40°C to +85°C. See Transformer Specifications Table for
details.
2. Typical value. Adjust for actual board parasitics to obtain optimum return loss.
3. Common decoupling capacitor for all VDDT and GNDT pins. One per chip.
Turns Ratio (Pri: sec ± 2%)
Transmit
1:2CT
Ω
series resistors and a 1:2 transformer.
R
R
X
X
T
T
Line
X
Line
X
Line
Line
A
B
A
(1)
Receive
•
•
•
•
1CT:2
2:1
2:1
2:1
2:1
1
1
1
•
•
1
•
•
0.22 µF
19 Ω
100 nF
100 nF
Cp
Cp
2
2
•
•
•
Ω
OCL @ 25°C (mH MIN)
4
Transmit
1 kΩ
1 kΩ
R
R
R
R
Electrical Specification @ 25°C
R
/120
R
R
R
T
T
T
1.2
T
1 KΩ
R
VDDT
VDDT
VDDT
R
VDDT
Ω
D2
D1
D4
D2
D3
D1
D4
D3
lines
RTIPn
RRINGn
TTIPn
TRINGn
Receive
One of Eight Identical Channels
RTIPn
RRINGn
TTIPn
TRINGn
One of Eight Identical Channels
20
1.2
through a pair of 9.1
mize the power consumption of the device, series resistors are removed
in this case.
harsh cable environment, series resistors are required to improve the
transmit return loss performance and protect the device from surges
coupling into the device.
In T1 mode, only 5.0 V can be selected. 100
For T1 applications, only 5.0 V operation is supported. However, in
Transmit
.6
L
L
VDDDn
GNDTn
(µH MAX)
VDDDn
GNDTn
Receive
0.1 µF
0.1 µF
.6
Ω
VDDT
VDDT
•
•
series resistors and a 1:2 transformer. To opti-
•
•
INDUSTRIAL TEMPERATURE RANGES
Transmit
68 µF
C
35
68 µF
W/W
3
(pF MAX)
3
Receive
35
Package/Schematic
Ω
lines are driven
TOU/3