HDSL
Line Interface Transformers
Available in Thru-hole and Surface Mount Versions
Operating Temperature
Range -40
0
C to +85
0
C
Primary is Line Side
Secondary is Chip Side
Electrical Specifications at 25
O
C
Parameter
Turns Ratio
(1)
Manufacturer I.C.
Name
P/N
Brooktree
BT8921
Brooktree
Brooktree
Brooktree
Level One
Level One
T-882
1:1:1
3.00
2.2
2.2
70
55
20.0
-75
1500
C
T-883
1:1:1
2.00
2.2
2.2
70
55
16.5
-75
1500
C
mH
Ω
Ω
mA
dB
dB
dB
V
RMS
Units
BT8921
BT8952
BT8952
SK7074
SK7074
Bit
Rate
784
1168
784
1168
784
1168
Transformer
P/N
T-882
T-883
T-718
T-717
T-977
T-848
Surge Voltage Capability
Metallic
Voltage: 800 V peak, 10/700
µS
Longitudinal
Voltage: 2400 V peak, 10/560
µS
T-977
1:1.8
2.75
3.0
3.2
75
50
20.0
-75
2000
A
T-848
1:1.8
2.06
2.0
2.0
75
50
16.5
-75
2500
B
T-718
2:1:1
3.00
2.2
4.4
160
55
20.0
-75
1500
C
T-717
2:1:1
2.00
2.2
4.4
160
55
16.5
-75
1500
C
Schematic "A"
PRI
SEC
Inductance
(2)
DC Resistance Pri
DC Resistance Sec
D.C. Current
Longitudinal Balance
Return Loss
Harmonic Distortion
Isolation
Schematic Style
Schematic "B"
PRI
SEC
1. Chip Side (Primary) to Line side (Secondary)
2. Line side
3. For all parts, unused Pin # 5 can be removed for keying to printed circuit board.
Add suffix "-9"
Schematic "C"
PRI
SEC
Refer to Individual Data Sheets for test conditions & additional information
RS2311 Package Dimensions in inches (mm)
1.070
(27.18)
REF. .900
(22.86)
REF.
10
Bottom View
1
2
3
4
5
.470
(11.94)
MAX.
.100
(2.54)
MIN.
.040
(1.02)
TYP.
.150
(3.81)
TYP.
1.070
(27.18)
REF. .900
(22.86)
REF.
1
2
3
4
5
.570
(14.48)
MAX.
10
9
8
7
6
.920
(23.37)
MAX.
9
8
7
6
Top View
.040
(1.02)
TYP.
.920
(23.37)
MAX.
.150
(3.81)
TYP.
Terminal Dimensions
.020 (.051) X .040 (1.02) Typical.
.800
(20.32)
Termination Numbers for Reference Only.
.470
(11.94)
MAX.
Part Number Examples:
.090
(2.29)
TYP.
1.19
(30.23)
1.10 (27.94)
1.04 (26.42)
T-977
T-977-9
T-977G
T-977-9G
(10-Pin Thru-hole)
(Thru-hole, Pin 5 Removed)
(10-Pin SMD)
(SMD, Pin 5 Removed)
.150
(3.81)
.080
(2.03)
.180
(4.57)
Specifications subject to change without notice.
For other values & Custom Designs, contact factory.
HDSL-RS - 4/99
Rhombus
Industries Inc.
22
15801 Chemical Lane, Huntington Beach, CA 92649-1595
Tel: (714) 898-0960
•
Fax: (714) 896-0971
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