ISDN S-INTERFACE MODULES
Surface Mount, Dual, 1500 Vrms
RoHS peak reflow temperature rating 245°C°
Meets the pulse waveform template of CCITT I.430 when
recommended transformer and chip pair are used
Developed for enhanced EMC performance
Excellent longitudinal balance
Low- or high-frequency choke options available
Electrical Specifications @ 25°C — Operating Temperature 0°C to 70°C
RoHS
Compliant
Part
Number
OCL Pri
LL Sec
(mH MIN) (µH MAX)
Ratio
(± 2%)
CW/W
(pF MAX)
CD Pri
(pF MAX)
DCR Pri
( +25% MAX)
DCR Sec
( +25% MAX)
D IDC
(mA MAX)
Transformers
Isolation
Voltage
(Vrms MIN)
IDC
(mA MAX)
Secondary
Pins
Chokes
T5037NL
1CT:2.5CT
30
10
150
100
3.4
7.0
4.7 mH
1.4
3
20-18, 13-11
T5038NL
1CT:2CT
30
10
150
100
3.4
5.4
470 µH
1.4
3
20-18, 13-11
T5039NL
1CT:2.5CT
30
10
150
100
3.4
7.0
470 µH
1.4
3
20-18, 13-11
T5049NL
1CT:1CT
30
10
150
100
3.4
3.4
4.7 mH
1.4
3
20-18, 13-11
1:1
22
15
45
100
1.3
3.4
4.7 mH
T5025
1. Non-RoHS part.
NOTE: When ordering Tape & Reel packaging, add a “T” suffix to the part number (ex: T5038NLT).
1.4
3
20-18, 13-11
1
Mechanical
Schematic
CEZ
Weight . . . . . . . . . . . . . 6.94 grams
Tape & Reel . . . . . . . . . . . .250/reel
Tube . . . . . . . . . . . . . . . . . . 15/tube
Dimensions: Inches
mm
Unless otherwise specified, all tolerances are ± .010
0,25
USA 858 674 8100
● Germany
www.pulseeng.com
49 7032 7806 0
● Singapore
65 6287 8998
● Shanghai
1
86 21 32181071
● China
86 755 33966678
● Taiwan
886 3 4643715
T635.C (8/09)
ISDN S-INTERFACE MODULES
Surface Mount, Dual, 1500 Vrms
Module Selection Guide
IC Manufacturer
IC Part Number
Pulse Part Number
AMD
AM79C 30A/32A
T5038NL
Lucent (AT&T)
T7234/ T7254/ T7250/ T7256/ T7259
T7903
T5037/ T5039NL
T5038NL
Mietec
MTC-2072
T5038NL
Mitel
MT8930/ 8931
T5038NL
Motorola
MC145574
T5037NL/ T5039NL
National
TP3420 / 3421
T5038NL
SGS Thomson
ST5420 / 5421
T5038NL
Siemens
PEB2080/ 2081/ 2084/2085/2086
PSB 2186
PSB 21381/ 21382/ 21383/ 21384
Yamaha
T5038NL
T5049NL
YM7405B
T5038NL
Definition of Terms
Ratio:
OCL:
LL Sec:
CW/W:
CD Pri:
This is the turns ratio, expressed as “Primary:Secondary”. The term “CT” designates a center-tapped
winding.
Open Circuit Inductance, measured 20 kHz, 100 mV.
Leakage Inductance measured across the primary with the respective secondary winding short-circuited.
Winding capacitance, formed by the primary and secondary wire. These wires form the “Plates” of this
capacitor. Measured at 100 kHz, 20 mV.
This is the distributed capacitance.
DCR:
This is the resistance of the windings when measured in DC conditions.
IDC:
The maximum specified unbalanced DC current capability of the device.
The minimum primary inductance and the maximum distributed capacitance satisfy the transmitter output and
receiver input impedance requirements of CCITT I.430 for both TE and NT.
The maximum distributed capacitance allows sufficient margin for the capacitance of the IC and a protection
diode network. It is consistent with the overall maximum value specified and permitted length of the basic
access TE cord.
Flammability – Materials used in the products are recognized UL94-VO. Products meet the requirements of
IEC 695-2-2 (needle flame test).
USA 858 674 8100
● Germany
www.pulseeng.com
49 7032 7806 0
● Singapore
65 6287 8998
● Shanghai
2
86 21 32181071
● China
86 755 33966678
● Taiwan
886 3 4643715
T635.C (8/09)
ISDN S-INTERFACE MODULES
Surface Mount, Dual, 1500 Vrms
Application Notes
The S-Interface is the standardized four wire digital telephone access
point defined by the CCITT I-Series recommendations for the Integrated
Service Digital Network. This “basic rate access” accommodates two
64 Kbps “B-channels” for information, one 16 Kbps “D-channel” intended
for signaling and control, and 48 Kbps for framing and other purposes,
giving a total rate of 192 Kbps. The CCITT physical layer recommends
that the user network interface be transformer coupled as shown in our
typical application notes.
Typical S-Interface Application Circuit for Motorola MC145574
*NOTE: Refer to Silicon Vendors’ Application Notes for more details on power supply connection and specific component values.
Common Mode Choke Performance
0
-10
HP-4195A
CH1
CH2
Typical Common Mode
Attenuation for the
high-frequency Common
Mode Choke (470 µH)
based on a 50 Ω system.
COMMON MODE
ATTENUATION (dB)
-20
XFMR
-30
100:50
BALUN
50:100
BALUN
-40
-50
-60
-70
-80
-90
-100
30 kHz
100 kHz
1 MHz
10 MHz
100 MHz
FREQUENCY
USA 858 674 8100
● Germany
www.pulseeng.com
49 7032 7806 0
● Singapore
65 6287 8998
● Shanghai
3
86 21 32181071
● China
86 755 33966678
● Taiwan
886 3 4643715
T635.C (8/09)
ISDN S-INTERFACE MODULES
Surface Mount, Dual, 1500 Vrms
Common Mode Choke Performance (continued)
-0
-10
HP-4195A
CH1
CH2
Typical Common Mode
Attenuation for the
low-frequency Common
Mode Choke (4.7 mH) based
on a 50 Ω system.
COMMON MODE
ATTENUATION (dB)
-20
XFMR
-30
50:100
BALUN
100:50
BALUN
-40
-50
-60
-70
-80
-90
-100
30 kHz
100 kHz
1 MHz
10 MHz
FREQUENCY
For More Information:
Pulse Worldwide
Headquarters
Pulse Europe
Einsteinstrasse 1
12220 World Trade Dr. D-71083 Herrenberg
San Diego, CA 92128 Germany
U.S.A.
www.pulseeng.com
Tel: 858 674 8100
Fax: 858 674 8262
Tel: 49 7032 7806 0
Fax: 49 7032 7806 135
Pulse China Headquarters
Pulse North China
Pulse South Asia
Pulse North Asia
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
Room 1503
XinYin Building
No. 888 YiShan Rd.
Shanghai 200233
China
135 Joo Seng Rd.
#03-02
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No. 26, Kao Ching Rd.
Yang Mei Chen
Taoyuan Hsien
Taiwan
R. O. C.
Tel: 86 21 54643211/2
Fax: 86 21 54643210
TEL: 65 6287 8998
FAX: 65 6280 0080
Tel: 886 3 4643715
Fax: 886 3 4641911
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.
www.pulseeng.com
4
T635.C (8/09)
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