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T1/E1/CEPT/ISDN-PRI TRANSFORMERS
Quad Port T1/E1 with 8 Transformers, 1500 Vrms
RoHS peak reflow temperature rating 245�C
Models matched to leading quad and dual T1/
E1/CEPT/ISDN-PRI transceivers
Crosstalk: -65 dB or better
UL1950 recognized (some parts pending approval)
RoHS compliant versions available upon request
RoHS Compliant
Part Number
Turns Ratio
(Pri:Sec ±2%)
OCL @ 25C
(mH MIN)
Std Temp. Ex Temp TX RX TX
T1064NL - 1:1.14 1:1.14CT 1.2
T1065NL T1105NL 1:2CT 1:2CT 1.2
T1068NL T1108NL 1:2CT 1:1CT 1.2
T1071NL
- 1:1/1.26 1:2CT 1.2
T1073NL - 1:2 1:2 1.2
T1124NL T1114NL 1:2CT 1CT:2 1.2
T1142NL T1231NL 1:2.4 1:1 1.0
T1145NL
- 1:2/2.4 1:0.79/1 1.0
- TX1262NL 1:2 1:2 1.2
- TX1264NL 1:2CT 1CT:1 1.2
- TX1266NL 1:2 1:1 1.2
- TX1295NL 1:1.26CT 1:1.26CT 1.2
Notes: Chart Notes and TOU Schematics are on page 2.
RX
1.2
1.2
1.2
1.2
1.2
1.2
1.0
1.0
1.2
1.2
1.2
1.2
TOU
Electrical Specifications @ 25C
LL Cww
(μH MAX)
(pF MAX) Package/
Schematic
TX RX TX RX
.6 .6 35 35 TOU/1
.8 .8 35 35 TOU/3
.6 .6 35 35 TOU/2
.6 .6 35 35 TOU/2
.6 .6 35 35 TOU/4
.6 .6 35 35 TOU/3
.5 .5 35 35 TOU/5
1.0 1.0 35 35 TOU/6
.7 .7 35 35 TOU/5
.6 .6 35 35 TOU/3
.6 .6 35 35 TOU/4
.6 .6 35 35 TOU/3
Mechanical
Primary Pins
Transmit
1-2, 6-7, 11-12, 16-17
4-5, 9-10, 14-15, 19-20
1-2, 6-7, 11-12, 16-17
1-2, 6-7, 11-12, 16-17
1-3, 6-8, 11-13, 16-18
4-5, 9-10, 14-15, 19-20
1-2, 8-9, 11-12, 18-19
1-2, 9-10, 11-12, 19-20
1-2, 6-7, 11-12, 16-17
4-5, 9-10, 14-15, 19-20
1-3, 6-8, 11-13, 16-18
4-5, 9-10, 14-15, 19-20
Receive
38-36, 33-31, 28-26, 23-21
24-25, 29-30, 34-35, 39-40
21-22, 26-27, 31-32, 36-37
21-22, 26-27, 31-32, 36-37
4-5, 9-10, 14-15, 19-20
1-3, 6-8, 11-13, 16-18
24-25, 27-28, 34-35, 37-38
37-36, 35-34, 27-26
3-4, 8-9, 13-14, 18-19
1-3, 6-8, 11-13, 16-18
4-5, 9-10, 14-15, 19-20
24-25, 29-30, 34-35, 39-40
USA 858 674 8100
Weight ......................3.8 grams
Tape & Reel ..................175/reel
Tray ..............................105/tray
Dimensions:
Inches
mm
Unless otherwise specified, all tolerances are ±
.010
0,25
Germany 49 7032 7806 0 Singapore 65 6287 8998 Shanghai 86 21 62787060 China 86 755 33966678
Taiwan 886 3 4356768
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T1/E1/CEPT/ISDN-PRI TRANSFORMERS
Quad Port T1/E1 with 8 Transformers, 1500 Vrms
Notes from Electrical Specifications Table
A. OCL (primary inductance) is measured at the primary winding. Turns ratio is specified primary:
secondary.
B. To make a 1CT:1 ratio from a 1CT:2CT ratio, use only one-half of the secondary (2CT) winding.
C. It is possible to use the same transformer model for the three impedance levels of T1 (100 W) and CEPT
(75 & 120 ). For specific connection information and resistor values, refer to IC vendor’s data
book.
D. Dual Ratio Transformer (T1071NL and T1145NL) - These transformers have tapped secondary windings
to provide two turns ratios (T/R). Use the entire primary winding and connect the secondary pins
listed below to obtain desired turns ratio:
Part
Number
T1071NL
T1145NL
Turns Secondary Turns Secondary
Ratio 1 Pins Ratio 2 Pins
1:1 40-39 1:1.26 40-38
1:1 35-34 1:1.26 35-33
1:1 30-29 1:1.26 30-28
1:1 25-24 1:1.26 25-23
1:2 40-39 1:2.4 40-38
1:2 33-32 1:2.4 33-31
1:2 30-29 1:2.4 30-28
1:2 23-22 1:2.4 23-21
E. Dual Ratio Transformer for the surface mount package is anti-static tubes. Optional Tape & Reel
packaging can be ordered by adding a “T” suffix to the part number, (i.e. T1064NLT).
F. Extended Temperature Range Models - For extended temperature range transformers (-40C to +85C
operating temperature range), OCL (Open Circuit Inductance) for the primary winding) is specified
at both -40C and +25C. At -40C, OCL is 600 μH minimum. All other parameters are specified at +25C
only. Standard temperature range is 0C to +70C.
Schematics
TOU
Transformer Selection Guide
IC Mfr.
IC Part Number
Comments
Mindspeed
(Conexant)
BT8510
BT8510
CN8380
T1/E1
T1/E1
Cirrus Logic
(Crystal)
61318
61577
61304A/5A/535A/574A,/75
61304A/5A/535A/574A,/75
120 E1
T1 & E1
75 E1
120 E1
61582, 61583
Maxim
(Dallas)
61310, 61581
61584/84A
IQ3
61584/82/83/A
IQ5
DS2196
DS2148/Q48
3V
DS21352/Q352, DS21354/Q354
Exar
Infineon
Technologies
(Siemens)
T5683A, 59L91
T5894, T5897, T5997
T5791/T93/94/95
83L30/34/38
PEB22504
PEB22554
PEB2256 3.3 V
3.3V
3.3V
E1/T1/J1
Intel
(Level One)
LXT 300/301
LXT 304/305/307
LXT 304/305/307
LXT 310/317/318
LXT 331
LXT 331, LXT 332
LXT 334, LXT 335
LXT 334, LXT 335
LXT 336
LXT 350, LXT 351, LXT 359
LXT 360/361/362/363
LXT 380/381/384/386/388
LXT 380/381/384/386/388
LXT 3104, LXT 3108
T1, E1
75 E1, 120E1
T1, E1
T1/E1
75 E1
T1, E1
T1, E1
T1, E1
T1, E1
Lucent T7689, T769, T7698
Technologies TLIU04C1
DS1
DS1
Zarlink MT9076, MT9075
(Mitel) MT9074, MT9075
PMC Sierra PM4318
Octal SMT
STD Temp EXT Temp
T1071NL
T1071NL
T1124NL
T1068NL
T1065NL
T1068NL
T1071NL
T1064NL
T1068NL
T1065NL
T1064NL
T1068NL
T1068NL
T1068NL
T1065NL
T1065NL
T1071NL
T1065NL
T1142NL
T1142NL
T1142NL
T1065NL
T1065NL
T1071NL
T1068NL
T1068NL
T1065NL
T1065NL
T1071NL
T1065NL
T1068NL
T1068NL
T1068NL
T1124NL
T1068
T1064NL
T1064NL
T1142NL
T1068NL
T1065NL
-
-
T1114NL
T1108NL
T1105NL
T1108NL
-
-
T1108NL
T1105NL
-
T1108NL
T1108NL
T1108NL
T1105NL
T1105NL
-
T1105NL
T1231NL
T1231NL
T1231NL
T1105NL
T1105NL
-
T1108NL
T1108NL
T1105NL
T1105NL
-
T1105NL
T1108NL
T1108NL
T1108NL
T1114NL
T1108NL
-
-
T1231NL
T1108NL
T1105NL
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T1/E1/CEPT/ISDN-PRI TRANSFORMERS
Quad Port T1/E1 with 8 Transformers, 1500 Vrms
Application
1. ET Product - All coils have an ET product of 10 V-μsec
minimum.
2. Flammability - Materials used in the products are
recognized as UL94-VO approved. Products meet the
IEC 695-2-2 requirements (Needle Flame Test).
3. Balance Characteristics - The transformers meet the
requirements for longitudinal balance of FCC part 68.
4. Common Mode Rejection Ratio - the CMRR for all
transformers is better than 50dB at 1MHz. A typical test
circuit is shown below.
HP-8751A
P1 P2
50:100
BALUN
XFMR
100:50
BALUN
Metallic Voltage: 800 V peak, 10/560μsec
Longitudinal Voltage:
2,400 V peak, 10/700μsec
8. Isolation Voltage - 100% of transformers are tested during the
specified isolation voltage level.
9. General Information - The transformers are specifically designed
for use in 1.544 Mbps (T1), 2.048 Mbps (CEPT) and ISDN Primary
rate (PRI) interface applications. They are matched to the
majority of the line interface transceiver ICs currently available.
Use of the proper transformer allows the interface circuit to
comply with ITU-T G.703 and other standards regarding pulse
waveform, return loss, and balance.
10. Common Mode Chokes - Additional high-frequency 4-line
common mode chokes may be used to provide an effective
means of complying with national and international regulations
on EMI. The common mode chokes are designed to be used in
conjunction with Pulse’s T1/CEPT transformers as shown in the
typical application below. Crosstalk is typically -65 dB or better.
Typical Application
5. Crosstalk Attentuation - In the packages which contain
transmit and receive transformers side by side, sufficient
crosstalk attentuation is achieved by the inherent
characteristics of the toroid cores as well as by their
proper positioning. The crosstalk attentuation is typically
65 dB or better. This result was established with the test
circuit shown below.
HP-8751A
P1 P2
50:100
BALUN
100
100
XFMR 100:50
BALUN
6. Return Loss - ITU-T G.703 and European national
regulatory documents specify minimum return loss levels.
The transformers will allow these limits to be complied
with the situations where they are applicable.
Frequency
50-100 kHz 10 kHz-2MHz 2-3 MHz
Return Loss
Transmit
9 dB
15 dB
11 dB
Receive
12 dB
18 dB
14 B
7. Surge Voltage Capability - All transformers and chokes meet
surge voltage tests according to the most stringent regulatory
documents, when used with the proper voltage and current
suppression devices:
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T1/E1/CEPT/ISDN-PRI TRANSFORMERS
Quad Port T1/E1 with 8 Transformers, 1500 Vrms
RoHS Compliant
Part Number
Number of
Lines
High Frequency Common Mode Chokes
Turns Ratio
(±5%)
Electrical Specifications @ 25°C
OCL Cw/w
LL
(μH MIN)
(pF MAX)
(μH MAX)
T8008NL*
16 (8 x 2 line) 1:1 (8 places)
47.0
25
.18
PE-65554NL
4
1:1:1:1 24.0
15
.20
PE-65555NL
4
1:1:1:1 8.0
10
.20
PE-65854NL
4
1:1:1:1 47.0
16
.20
PE-65857NL
4
1:1:1:1 24.0
15
.23
*Notes: Please see page 1 for TOU mechanical specifications.
Schematic
TOU 2
1 40
2 39
3 38
5 36
6 35
7 34
8 33
10 31
11 30
12 29
13 28
15 26
16 25
17 24
18 23
Mechanicals
20
21
IN
DCR
(MAX)
0.40
0.30
0.25
0.30
0.30
Isolation
(Vrms MIN)
Package/Schematic
500 TOU/2 (Surface Mount)
500 IN/1 (Through Hole)
500 IN/1 (Through Hole)
500 SH/1 (Surface Mount)
500 LA/1 (Surface Mount)
Schematic
SH
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T1/E1/CEPT/ISDN-PRI TRANSFORMERS
Quad Port T1/E1 with 8 Transformers, 1500 Vrms
Mechanical
LA
Schematic
Weight ......................0.3 grams....................2 grams......................2.5 grams
Tape & Reel ................1500/reel...................250/reel..............................(N/A)
Tray ................................25/tray....................30/tube..........................35/tube
Dimensions:
Inches
mm
Unless
otherwise
specified,
all
tolerances
are
±
.010
0,25
For More Information
Pulse Worldwide
Headquarters
12220 World Trade Drive
San Diego, CA
92128
U.S.A.
Tel: 858 674 8100
Fax: 858 674 8262
Pulse Europe
Einsteinstrasse 1
D-71083 Herren-
berg
Germany
Tel: 49 7032 78060
Fax: 49 7032 7806 135
Pulse China Headquarters
B402, Shenzhen Academy of
Aerospace Technol-
ogy Bldg.
10th Kejinan Road
High-Tech Zone
Nanshan District
Shenzen, PR China
518057
Tel: 86 755 33966678
Fax: 86 755 33966700
Pulse North China
Room 2704/2705
Super Ocean Finance
Ctr.
2067 Yan An Road
West
Shanghai 200336
China
Tel: 86 21 62787060
Fax: 86 2162786973
Pulse South Asia
135 Joo Seng Road
#03-02
PM Industrial Bldg.
Singapore 368363
Tel: 65 6287 8998
Fax: 65 6287 8998
Pulse North Asia
3F, No. 198
Zhongyuan Road
Zhongli City
Taoyuan County 320
Taiwan R. O. C.
Tel: 886 3 4356768
Fax: 886 3 4356823 (Pulse)
Fax: 886 3 4356820 (FRE)
Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product names mentioned herein may be
trademarks or registered trademarks of their respective owners. © Copyright, 2012. Pulse Electronics, Inc. All rights reserved.
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