T1/E1/CEPT/ISDN-PRI TRANSFORMERS
Quad Port T1/E1 with 8 Transformers, 1500 Vrms
RoHS peak reflow temperature rating 245½C
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
Electrical Specifications @ 25½C
LL
Cww
Package/
(μH MAX)
(pF MAX)
Schematic
TX
RX
TX
RX
.6
.8
.6
.6
.6
.6
.5
1.0
.7
.6
.6
.6
.6
.8
.6
.6
.6
.6
.5
1.0
.7
.6
.6
.6
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
TOU/1
TOU/3
TOU/2
TOU/2
TOU/4
TOU/3
TOU/5
TOU/6
TOU/5
TOU/3
TOU/4
TOU/3
RoHS Compliant
Part Number
Std Temp.
T1064NL
T1065NL
T1068NL
T1071NL
T1073NL
T1124NL
T1142NL
T1145NL
-
-
-
-
Ex Temp
-
T1105NL
T1108NL
-
-
T1114NL
T1231NL
-
TX1262NL
TX1264NL
TX1266NL
TX1295NL
Turns Ratio
(Pri:Sec
±2%)
TX
1:1.14
1:2CT
1:2CT
1:1/1.26
1:2
1:2CT
1:2.4
1:2
1:2CT
1:2
RX
1:1.14CT
1:2CT
1:1CT
1:2CT
1:2
1CT:2
1:1
1:2
1CT:1
1:1
OCL @ 25½C
(mH MIN)
TX
1.2
1.2
1.2
1.2
1.2
1.2
1.0
1.0
1.2
1.2
1.2
1.2
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
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
1:2/2.4 1:0.79/1
1:1.26CT 1:1.26CT
Notes: Chart Notes
and TOU Schematics are on page 2.
Mechanical
TOU
Weight
......................3.8 grams
Tape & Reel
..................175/reel
Tray
..............................105/tray
Dimensions:
Inches
Unless otherwise specified, all tolerances are
±
.010
mm
0,25
USA 858 674 8100
1
Germany 49 7032 7806 0
Singapore 65 6287 8998
Shanghai 86 21 62787060
China 86 755 33966678
Taiwan 886 3 4356768
T622.K (04/12)
pulseelectronics.com
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
Ω
& 120
Ω).
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:
Transformer Selection Guide
IC Mfr.
Mindspeed
(Conexant)
IC Part Number
Comments
T1/E1
T1/E1
120 E1
T1 & E1
75 E1
120 E1
IQ3
IQ5
3V
Octal SMT
STD Temp
BT8510
BT8510
CN8380
Cirrus Logic
61318
61577
(Crystal)
61304A/5A/535A/574A,/75
61304A/5A/535A/574A,/75
61582, 61583
61310, 61581
61584/84A
61584/82/83/A
Maxim
DS2196
(Dallas)
DS2148/Q48
DS21352/Q352, DS21354/Q354
Exar
T5683A, 59L91
T5894, T5897, T5997
T5791/T93/94/95
83L30/34/38
Infineon
PEB22504
Technologies
PEB22554
(Siemens)
PEB2256 3.3 V
Intel
LXT 300/301
(Level One) 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
Lucent
T7689, T769, T7698
Technologies
TLIU04C1
Zarlink
MT9076, MT9075
(Mitel)
MT9074, MT9075
PMC Sierra
PM4318
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
EXT Temp
-
-
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
Part
Number
Turns
Ratio 1
1:1
1:1
1:1
1:1
1:2
1:2
1:2
1:2
Secondary
Pins
40-39
35-34
30-29
25-24
40-39
33-32
30-29
23-22
Turns
Ratio 2
1:1.26
1:1.26
1:1.26
1:1.26
1:2.4
1:2.4
1:2.4
1:2.4
Secondary
Pins
40-38
35-33
30-28
25-23
40-38
33-31
30-28
23-21
T1071NL
T1145NL
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 (-40½C to +85½C
operating temperature range), OCL (Open Circuit Inductance) for the primary winding) is specified
at both -40½C and +25½C. At -40½C, OCL is 600
μH
minimum. All other parameters are specified at +25½C
only. Standard temperature range is 0½C to +70½C.
3.3V
3.3V
E1/T1/J1
T1, E1
75 E1, 120E1
T1, E1
T1/E1
75 E1
T1, E1
T1, E1
T1, E1
T1, E1
DS1
DS1
Schematics
TOU
2
pulseelectronics.com
T622.K (04/12)
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.
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.
50:100
BALUN
XFMR
100:50
BALUN
HP-8751A
P1 P2
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
Return Loss
Transmit
Receive
9 dB
12 dB
15 dB
18 dB
11 dB
14 B
50-100 kHz
10 kHz-2MHz
2-3 MHz
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:
3
pulseelectronics.com
T622.K (04/12)
T1/E1/CEPT/ISDN-PRI TRANSFORMERS
Quad Port T1/E1 with 8 Transformers, 1500 Vrms
RoHS Compliant
Number of
Part Number
Lines
High Frequency Common Mode Chokes
T8008NL*
PE-65554NL
PE-65555NL
PE-65854NL
PE-65857NL
16 (8 x 2 line)
4
4
4
4
Turns Ratio
(±5%)
1:1 (8 places)
1:1:1:1
1:1:1:1
1:1:1:1
1:1:1:1
Electrical Specifications @ 25°C
LL
C w/w
OCL
(μH MIN)
(pF MAX)
(μH MAX)
47.0
24.0
8.0
47.0
24.0
25
15
10
16
15
.18
.20
.20
.20
.23
DCR
(Ω MAX)
0.40
0.30
0.25
0.30
0.30
Isolation
(Vrms MIN)
500
500
500
500
500
Package/Schematic
TOU/2 (Surface Mount)
IN/1 (Through Hole)
IN/1 (Through Hole)
SH/1 (Surface Mount)
LA/1 (Surface Mount)
*Notes:
Please see page 1 for TOU mechanical specifications.
Schematic
1
2
3
5
6
7
8
10
11
12
13
15
16
17
18
20
TOU
2
40
39
38
36
35
34
33
31
30
29
28
26
25
24
23
21
Mechanicals
IN
Schematic
SH
4
pulseelectronics.com
T622.K (04/12)
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 China Headquarters
Pulse North China
Pulse South Asia
Pulse North Asia
B402, Shenzhen Academy of
Room 2704/2705
135 Joo Seng Road
3F, No. 198
Aerospace Technol-
Super Ocean Finance
#03-02
Zhongyuan Road
ogy Bldg.
Ctr.
PM Industrial Bldg.
Zhongli City
10th Kejinan Road
2067 Yan An Road
Singapore 368363
Taoyuan County 320
High-Tech Zone
West
Taiwan R. O. C.
Nanshan District
Shanghai 200336
Tel: 886 3 4356768
Shenzen, PR China
China
Tel: 65 6287 8998
Fax: 886 3 4356823 (Pulse)
Tel: 858 674 8100
Tel: 49 7032 78060
518057
Fax: 65 6287 8998
Fax: 886 3 4356820 (FRE)
Fax: 858 674 8262
Fax: 49 7032 7806 135
Tel: 86 755 33966678
Tel: 86 21 62787060
Fax: 86 755 33966700
Fax: 86 2162786973
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.
Pulse Worldwide
Headquarters
12220 World Trade Drive
San Diego, CA
92128
U.S.A.
Pulse Europe
Einsteinstrasse 1
D-71083 Herren-
berg
Germany
5
pulseelectronics.com
T622.K (04/12)
DSP 与 ARM 处理器
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
