PE-64995NL [PULSE]
ISDN S-Interface Transformers;
| 型号： | PE-64995NL |
| 厂家： | 
PULSE A TECHNITROL COMPANY |
| 描述： | ISDN S-Interface Transformers 变压器 综合业务数字网 |
| 文件： | 总7页 (文件大小：1391K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ISDN S-Interface Transformers
Surface Mount, Dual, 2000 Vrms
Meets pulse waveform template of CCITT I.430 when
recommended transformer and chip pair are used
Excellent longitudinal balance
2kVrms isolation voltage
Available in tape and reel, tray or tube packaging
Recognized by UL
Electrical Specifications @ 25°C - Operating Temperature 0°C to +70°C
L
Ratio
(±2%)
OCL Pri
(mH MIN)
L Sec
(μH MAX)
Cw/w
(pF MAX)
CD Pri
(pF MAX)
DCR Pri
(Ω ±25%)
DCR Sec
(Ω ±25%)
Part
Number
C
IDC
Package /
Schematic
∆
A
B
A & B
22
A
5
B
5
A & B
100
A
42
80
B
A
B
A
B
(mA MAX)
PE-65793
PE-65795
1:1
1:1
1:2
42
80
2.4
4.3
2.4
4.3
2.4
4.3
2.4
4.3
1
1
SC-1
SC-1
1:2
22
15
15
100
Mechanical
Schematic
SC-1
16
11
9
10
15 14 13 12
.050
1,27
TYP
.120
3,05
TYP
16
9
8
SEC
.720
MAX
.530
13,46
18,29
.600
.760
.520
MAX
PE-6579X
Date Code
Country of Origin
19,30
13,21
15,24
PRI
.030
0,76
16X
.100
2,54
TYP
.700
17,78
1
2 3
4
5
6 7
8
COIL A
COIL B
.950
24,13
SUGGESTED PAD LAYOUT
MAX
.390
9,91
MAX
.004/0,10
.100
2,54
.040/.050
1,02/1,27
Inches
mm
Dimensions:
16 SURFACES
.010/.020
0,25/0,51
.122
3,10
Unless otherwise specified,
all tolerances are
.010
0,25
USA 858 674 8100
Germany 49 7032 7806 0
Singapore 65 6287 8998
Shanghai 86 21 62787060
China 86 755 33966678
Taiwan 886 3 4356768
1
pulseelectronics.com
T604.F (05/12)
ISDN S-Interface Transformers
Through Hole, Single & Dual, 2000 Vrms
Meets pulse waveform template of CCITT I.430 when
recommended transformer and chip pair are used
Excellent longitudinal balance
2kVrms isolation voltage
Recognized by UL
Electrical Specifications @ 25°C - Operating Temperature 0°C to +70°C
2kV Isolation, Through Hole, Single Transformers
C
L
Part
Number
Ratio
(±2%)
OCL Pri
(mH MIN)
L Sec
Cw/w
(pF MAX)
CD Pri
(pF MAX)
DCR Pri
(Ω ±25%)
DCR Sec
(Ω ±25%)
Isolation
(VRMS MIN)
∆IDC
Package /
Schematic
(μH MAX)
(mA MAX)
PE-64995NL
1CT:2CT
22
15
100
80
2.5
4.3
2000
1
SC-1
Mechanical
Schematic
IS-1
.558
14,20
.400
10,20
.400
10,20
MAX
MAX
PRI : SEC
6
1
2
3
1
6
5
.558
14,20
.400
10,20
MAX
C
5
4
2
3
PE-6499X
DATE CODE
L
4
C
L
.120 .020
–
3,10 0,30
LEADS ARE 22 AWG SOLDERABLE
Electrical Specifications @ 25°C - Operating Temperature -40°C to +125°C
DCR (mΩ MAX)
Equivalent Primary
Turns Ratio
Part
Number
Equivalent
Primary
Pins
Secondary
Pins
Secondary
Pins
Package /
Schematic
Ratio A
1:2
RatioA
Single
Single
Pins
PE-65495NL
1-4
1-4
16-13
1:2
PE-64995NL
5-8
12-9
ID-1
Mechanical
Schematic
ID-1
COIL A
COIL B
16 15 14 13 12 1110
9
SEC
PRI
1
2
3
4
5
6
7
8
2
pulseelectronics.com
T604.F (05/12)
ISDN S-Interface Transformers
Transformer Selection & Packaging
Dual
Surface Mount
Single
Through Hole, 2 kVRMS
Dual
Through Hole
IC
IC
Manufacturer
Part Number
TX & RX
TX
RX
TX & RX
PE-65495
PE-65495
PE-65495
AT&T/Lucent
T7903
PE-65795
PE-64995NL
PE-64995NL
PE-64995NL
PE-64995NL
PE-64995NL
PE-64995NL
Mietec
Mitel
MTC-2072
PE-65795
MT8930
PE-65795
MC145474/145475
MC145574
Motorola
-
-
PE-65495
PE-65795
National D
TP3420/34221
ST5420, ST5421
PEB 2080/2081/2085
PSB 2186
PE-65795
PE-65795
PE-64995NL
PE-64995NL
PE-64995NL
PE-64995NL
PE-65495
PE-65495
SGS Thomson
Siemens
Yamaha
PE-65795
PE-65795
PE-64995NL
PE-64995NL
PE-64995NL
PE-64995NL
PE-65495
PE-65495
PEB 2084/2086
7405B
Notes:
A. In this catalog, turns ratio is expressed as
E. PE-65950 and PE-65853 are recommended for use
with Siemens PEB 2080/2085 and help in meeting the
required longitudinal balance.
“primary:secondary”. The term “CT” designates a
center tapped winding. A center tapped winding
can be created by connecting two ends of a split
center winding together on the printed circuit board. In
ISDN-S applications, the primary winding is the line
side transformer winding.
F. Standard packaging for all chokes and transformers
listed in this catalog is anti-static tubes. Optional
anti-static tray packaging can be ordered for the
surface mount SC-1 and LA-1 packages by adding an
“R” suffix to the part number, (ie: PE-65795R). Optional
tape and reel packaging can be ordered for all surface
mount packages by adding a “T” suffix to the part
number, (ie: PE-65795T).
B. The minimum primary inductance and the maximum
distributed capacitance satisfy the transmistter
output and receiver input impedance requirements of
CCITTI I.430 for both the TE and the 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 the permitted length of the basic access
TE cord.
G. For PE-65854, OCL at -40C is 27 H minimum. For
maximum performance, using windings (1-8) and (2-7)
as a pair and windings (3-6) and (4-5) as a pair.
H. For transformers and choke modules, refer to data
sheet T632.
C. The maximum specified unbalanced DC current
capability is based on 20 mH minimum primary OCL
D. National recommends a 1:2 receive transformer, but
used as a 1:1 ratio by connectin only half the secondary
winding. See National’s application note.
Packaging Information
PackageF
LA-1
Type
SMT
SMT
THT
Part Weight Parts/Tube
Parts/Tray
Parts/Reel
Reel Diameter
Tape Width
Pitch
24 mm
24 mm
-
2.0 Grams
7.0 Grams
7.0 Grams
4.0 Grams
30
20
20
35
60
50
-
250
150
-
13 Inches
24 mm
SC-1
13 Inches
44 mm
ID-1
-
-
-
-
IS-1
THT
-
-
-
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pulseelectronics.com
T604.F (05/12)
ISDN S-Interface Transformers
Surface Mount, Dual, 2000Vrms
TE
NT
Sec : Pri
Pri : Sec
Pri : Sec
S-INTERFACE
IC
RCV
IC
XMIT
Sec : Pri
Low
High
Freq
High
Freq
Low
Freq
Freq
XMIT
RCV
Choke Choke
Choke Choke
Local
Power
DC
Supply
Figure 1. Typical ISDN S-Interface Application Circuit
1. General Information - The S-interface is the
standardized four-wire digital telephone access point
defined by the CCITTI I-series recommendations for
the Integrated Services Digital Network. This “basic
rate access” accommodates two 64Kpbs “B-channels”
for information, one 16Kbps “D-channel” intended
for signaling and control, and 48 Kbps for framing
and other purposes, giving a total rate of 192Kbps. The
CCITT physical layer recommends that the user network
interface be transformer coupled. A typical application
circuit is presented in Figure 1.
2. Longitudinal Balance for Transformers - The
longitudinal conversion loss specification in I.430 includes
a test setup that is intended for system evaluation,
whether TE or NT. Such a test is performed with DC
current present. The transformer plays an essential role
in achieving the required balance. However, all other
elements in the circuit should be also designed to provide
the highest possible symmetry. These elements include
the protection circuitry, series resistors, chip transmitter
output and receiver input, as well as the cables used
and the TE cord where applicable. A high level of
transformer balance compensates for some circuit AC-
unbalance, and assures compliances of the system with
I.430 on longitudinal conversion loss (LCL) and signal
balance. This is accomplished by a well AC-balanced
winding configuration whereby the capacitive coupling
between primary and secondary windings is evenly
distributed. Also, both halves of the lineside winding are
well balanced. The transformers meet the following LCL
specifications:
The transformer provides isolation for the line card
or the terminal from the line. It is also a way to provide
phantom power feeding to the terminal over the S-loop.
Each end requires a transmit and a receive transformer.
Chokes are used in some applications to reduce
common mode noise (see note 5).
The transformers described in this data sheet are
matched to the transceivers offered by the major IC
manufacturers listed. The use of a transformer-chip pair
assures that all requirements of CCITT I.430 are met
with respect to pulse waveform templates, impedance
and longitudinal balance. In addition, the transformers
provide the isolation voltages required by the regulatory
agencies and are capable of passing surge voltage tests.
ꢀ
ꢀ
•ꢀꢀ10kHzꢀtoꢀ300kHz:ꢀ60dBꢀminimum
•ꢀꢀ300kHzꢀtoꢀ1MHz:ꢀMinimumꢀvalueꢀdecreasing
20dB/decade.
(continued on next page)
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pulseelectronics.com
T604.F (05/12)
ISDN S-Interface Transformers
Surface Mount, Dual, 2000Vrms
ISM-1 = Wandel and Goltermann
Signal Balance Ratio Bridge
HP-8751A
Network Analyzer
Out
R
A
B
Pri
Sec
VT
EL
Terminating
Resistor
ISM-1
Figure 2. Longitudinal Balance Test Circuit
2. (continued from previous page) A recommended
test set up is shown in Figure 2. A high inductance “low
frequency” is common mode choke, such as PE-
65950NL or PE-65853NL, is recommended to improve
balance, or to correct inherent unbalances of some
circuits.
ꢀꢀꢀꢀandꢀinternationalꢀregulationsꢀonꢀEMI.ꢀTheyꢀareꢀdesignedꢀ
to be used in conjunction with either Pulse’s ISDN
S-Interface or T1/CEPT transformers as shown in Figure
1. A high inductance “low frequency” common mode
choke is recommended to improve balance, or to
correct inherent unbalances of some ISDN S-Interface
circuits.
3. Impedance Requirements - The requirements for
minimum impedance in the inactive and powered-
down states are expressed by impedance templates
for both transmitter and receiver in NT and TE. At the
ꢀꢀꢀꢀꢀlowꢀfrequencyꢀendꢀofꢀ1MHz,ꢀitꢀisꢀreasonableꢀtoꢀ
assume that the impedance seen from the line is
entirely capacitive. The maximum capacitance budget,
derived from the templates, is somewat different
for the NT and the TE. Contributors to the total
capacitance are: the chip output, the protection circuit,
the transformer, common mode choke, and any other
element that may be present. In the TE case, there is
also the maximum allowable TE cord impedance. Here
the maximum buget is 800pF. As a rule, the
5. Surge Voltage Capability for Transformers and
Chokes
ꢀ
ꢀ
•ꢀꢀLongitudinalꢀVoltageꢀPeak:ꢀ2,400Vꢀ10/700μsec
•ꢀꢀMetallicꢀVoltageꢀPeak:ꢀꢀ800Vꢀꢀ10/560μsec
6. Behavior Under Fault Conditions - Telephony voltages
may accidentally appear on the ISDN S-Interface line
to the transformer. The transformer will withstand a
DC current of 0.5 Amps for 15 minues without
permanent damage. Such current may be cauased by
the telephone central battery. The transformer will
also survive ringing voltages. These are nominally
ꢀꢀꢀꢀꢀ120Vꢀorꢀ200Vꢀmaximumꢀatꢀ20ꢀtoꢀ60Hz,ꢀlimitedꢀbyꢀ
1500W resistive or 400 to 600W inductive limiting.
These may cause peak currents.
capacitances should be kept as low as possible in the
interface circuit design. With the specified transformer
capacitances, it is possible to remain within budget
and have a reasonable margin for measurement errors.
4. Common Mode Chokes - The “high frequency” 4-wire
common mode chokes shown on pages 7 and 8
7. Flammabilityꢀ-ꢀMaterialsꢀusedꢀinꢀtheꢀproductsꢀareꢀ
ꢀꢀꢀꢀꢀrecognizedꢀUL94-VO.ꢀProductsꢀmeetꢀtheꢀrequirementsꢀ
of IEC 695-2-2 (Needle Flame Test).
provide an effective means of compliance with national
5
pulseelectronics.com
T604.F (05/12)
ISDN S-Interface Transformers
Common Mode Chokes for Telecom Applications
Designed for 4-wire links, ISDN-S/T and T1/E1/CEPT
High frequency chokes for EMI reduction
Low frequency chokes improve longitudinal balance in
ISDN-S/T links
Surface mount and through hole models available
Electrical Specifications @ 25°C - Operating Temperature 0°C to +70°C
L
Part
Number
OCL Pri
(mH MIN)
L Sec
Cw/w
(pF MAX)
DCR
(W MAX)
Isolation
(VRMS MIN)
Package /
Schematic
(μH MAX)
Low Frequency
E
PE-65853NL
4.7 mH ±30%
4.7 mH ±30%
1
1
60
50
1.20
1.00
500
500
PA-2/5C (Surface Mount)
IS-4/1C (Through Hole)
PE-65950NL E
High Frequency
PE-65554NL
PE-65854NL F
PE-65857NL
24.0 μH MIN
47.0 μH MIN
22.5 μH MIN
.20
.18
15
20
17
0.30
0.40
0.30
500
50
IN-1/C (Through Hole)
SH-4/C (Surface Mount)
LA-1/C (Surface Mount)
.23
500
20K
18K
16K
14K
12K
10K
8K
Typical common
mode attenuation
for low frequency
common mode
chokes based on
a 100 system.
Typical impedance
for low frequency
common mode
chokes based on
a 100 system.
PE-65541
PE-65950/65853
6K
4K
2K
0
100 KHz
1 MHz
10 MHz
Frequency
3.0K
2.8K
2.6K
2.4K
2.2K
2.0K
1.8K
1.6K
1.4K
1.2K
1K
800
600
400
200
0
0
-5
PE-65854
Typical common
mode attenuation
for high frequency
common mode
chokes based on
a 100 system.
-10
Typical impedance
for high frequency
common mode
chokes based on
a 100 system.
PE-65554/65857
-15
-20
-25
-30
PE-65554/65857
PE-65854
1 MHz
10 MHz
100 MHz
Frequency
1 MHz
10 MHz
100 MHz
Frequency
6
pulseelectronics.com
T604.F (05/12)
ISDN S-Interface Transformers
Common Mode Chokes for Telecom Applications
Mechanicals
IN-1
SH-4
.300
7,62
MAX
.595
.100
2,54
MAX
6
15,11
8
7
5
4
.480
12,20
.300
7,62
MAX
PE-XXXXX
C
L
Date Code
1Country of Origin
2
3
.130 – .010
3,30 – 0,25
C
L
IN-4
PA-2
IN-1
Schematics
C
1C
1
3
4
5
7
8
1
8
2
7
3
6
4
2
6
5
Inches
mm
.010
0,25
1. Dimensions:
Unless otherwise specified, all tolerances are
2. See page 3 for packaging information.
For More Information
Pulse Worldwide
Headquarters
12220 World Trade Drive
San Diego, CA
92128
Pulse Europe
Einsteinstrasse 1
D-71083 Herren-
berg
Pulse China Headquarters
Pulse North China
Pulse South Asia
Pulse North Asia
3F, No. 198
B402, Shenzhen Academy of
Aerospace Technol-
ogy Bldg.
Room 2704/2705
135 Joo Seng Road
Super Ocean Finance
Ctr.
2067 Yan An Road
West
Shanghai 200336
China
#03-02
PM Industrial Bldg.
Singapore 368363
Zhongyuan Road
Zhongli City
Germany
10th Kejinan Road
High-Tech Zone
Nanshan District
Shenzen, PR China
518057
Tel: 86 755 33966678
Fax: 86 755 33966700
Taoyuan County 320
Taiwan R. O. C.
Tel: 886 3 4356768
Fax: 886 3 4356823 (Pulse)
Fax: 886 3 4356820 (FRE)
U.S.A.
Tel: 65 6287 8998
Fax: 65 6287 8998
Tel: 858 674 8100
Fax: 858 674 8262
Tel: 49 7032 78060
Fax: 49 7032 7806 135
Tel: 86 21 62787060
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.
7
pulseelectronics.com
T604.F (05/12)
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