T1/E1/CEPT/ISDN-PRI
INTERFACE MODULES
Four Transformer Modules for Dual SMT
T1/E1 Ports, Extended Temperature Range
RoHS peak reflow temperature rating 245°C
Optimized for enhanced EMC performance
SMT Dual Port package contains transformers with optional
common mode chokes on both transmit and receive channels
Models matched to leading transceiver ICs
Patented Interlock Base construction for high-reliability
Recognized to UL 1950
Isolation Voltage: 1500 Vrms
www.pulseeng.com 1 T662.D (10/09)
Dimensions: Inches. Unless otherwise specified, all tolerances are ± .010
mm 0,25
Electrical Specifications @ 25°C
RoHS Compliant
Part Number
Turns Ratio 2
(Pri:Sec ± 2%)
Secondary
OCL @ 25°C
(mH MIN)
CW/W
(pF MAX)
DCR Pri
(Ω MAX)
Package/
Schematic
Primary Pins
w/CMC wo/CMC Transmit Receive Transmit Receive
EXTENDED
TEMPERATURE
RANGE
MODELS 1
–
OPERATING
TEMPERATURE
-40°C
TO
+85°C
T1176NL —1CT:2.4CT 1CT:1CT 1.20 35 .80 WAT/2 1-3 & 10-12 21-19 & 18-16
TX1192NL TX1322NL 1CT:2.42CT 1CT:2.42CT 1.20 25 .80 WAT/1 4-6 & 10-12 1-3 & 7-9
TX1193NL TX1323NL 1CT:2CT 1CT:1CT 1.20 35 .80 WAT/1 4-6 & 10-12 24-22 & 18-16
1. Extended Temperature Range Models — For extended temperature range transformers (-40°C to +85°C operating temperature range), OCL (Open Circuit Inductance)
is specified at both -40°C and +25°C. At -40°C, OCL is 600 µH minimum. All other parameters are specified at +25°C only.
2. Turns ratio is specified primary:secondary (CT = Center Tap).
3. Standard packaging 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. T1176NLT).
USA 858 674 8100 • Germany 49 7032 7806 0 • Singapore 65 6287 8998 • Shanghai 86 21 32181071 • China 86 755 33966678 • Taiwan 886 3 4643715
Weight . . . . . . . . . . . . . . .4.0 grams
Tape & Reel . . . . . . . . . . . . 250/reel
Tube . . . . . . . . . . . . . . . . . . 30/tube
WAT
Mechanical Schematic
www.pulseeng.com 2 T662.D (10/09)
1. Flammability — Materials used in these products are recognized as
UL94-VO approved. Products meet the requirements of IEC 695-2-2
(Needle Flame Test).
2. Balance Characteristics — The transformers meet the requirements
for longitudinal balance of FCC part 68.
3. Common Mode Rejection Ratio — the CMRR for all transformers is
better than 50 dB at 1 MHz.
4. Crosstalk Attenuation — In the packages which contain transmit
and receive transformers side by side, sufficient crosstalk attenuation
is achieved by the inherent characteristics of the toroid cores as well
as by their proper positioning. The crosstalk attenuation is typically
65 dB or better.
5. Return Loss — ITU-T G.703 and the European national regulatory
documents specify minimum return loss levels. The transformers will
allow these limits to be complied within the situations where they
are applicable.
Frequency 50-100 KHz 100 KHz-2 MHz 2-3 MHz
Return Loss
XMIT 9 dB 15 dB 11 dB
RCV 12 dB 18 dB 14 dB
6. General Information — The transformers are specifically designed for use in
1.544 Mbps (T1), 2.048 Mbps (CEPT) and ISDN Primary Rate Interface (PRI)
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.
Application Notes
For More Information:
Pulse Worldwide
Headquarters
12220 World Trade Dr.
San Diego, CA 92128
U.S.A.
www.pulseeng.com
Tel: 858 674 8100
Fax: 858 674 8262
Pulse Europe
Einsteinstrasse 1
D-71083 Herrenberg
Germany
Tel: 49 7032 7806 0
Fax: 49 7032 7806 135
Pulse China Headquarters
B402, Shenzhen Academy of
Aerospace Technology Bldg.
10th Kejinan Rd.
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 Rd. West
Shanghai 200336
China
Tel: 86 21 62787060
Fax: 86 2162786973
Pulse South
Asia
135 Joo Seng Rd.
#03-02
PM Industrial Bldg.
Singapore 368363
Tel: 65 6287 8998
Fax: 65 6287 8998
Pulse North Asia
3F, No. 198
Zhongyuan Rd.
Zhongli City
Taoyuan County 320
Taiwan R. O. C.
Tel: 886 3 4356768
Fax: FRE 886 3 4356820
Pulse: 886 3 4356823
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, 2009. Pulse Engineering, Inc. All rights reserved.
T1/E1/CEPT/ISDN-PRI
INTERFACE MODULES
Four Transformer Modules for Dual SMT
T1/E1 Ports, Extended Temperature Range
