ISDN S-INTERFACE TRANSFORMERS Suface Mount, Dual, 2000Vrms 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 @ 25C -- Operating Temperature 0C to 70C Ratio A (2%) Part Number PE-65793 PE-65795 OCL Pri B (mH MIN) LL Sec (H MAX) CW/W (pF MAX) CD Pri (pF MAX) DCR Pri ( 25%) DCR Sec ( 25%) IDC C Package/ (mA MAX) Schematic A B A&B A B A&B A B A B A B 1:1 1:2 1:1 1:2 22 22 5 15 5 15 100 100 42 80 42 80 2.4 2.5 2.4 2.5 2.4 4.3 2.4 4.3 Mechanical 1 1 SC-1 SC-1 Schematic SC-1 .050 TYP 1,27 .120 TYP 3,05 16 16 15 14 13 9 .720 MAX .530 MAX 18,29 13,46 .600 15,24 PE-6579X Date Code Country of Origin 16X .030 0,76 8 .950 MAX 24,13 9 SEC .760 .520 19,30 13,21 .100 TYP 2,54 12 11 10 .700 17,78 SUGGESTED PAD LAYOUT PRI 1 2 3 4 COIL A 5 6 7 8 COIL B .390 MAX 9,91 .122 3,10 .100 2,54 .010/.020 0,25/0,51 .004/0,10 16 SURFACES .040/.050 1,02/1,27 Dimensions: Inches mm Unless otherwise specified all tolerances are .010 0,25 USA 858 674 8100Germany 49 7032 7806 0Singapore 65 6287 8998Shanghai 86 21 62787060China 86 755 33966678Taiwan 886 3 4356768 www.pulseeng.com 1 T604.E (10/10) ISDN S-INTERFACE TRANSFORMERS Through Hole, Single & Dual, 2000Vrms Meets the pulse waveform template of CCITT I.430 when recommended transformer and chip pair are used Excellent longitudinal balance 2kVrms or higher voltage isolation Recognized by UL Electrical Specifications @ 25C -- Operating Temperature 0C to 70C 2KV ISOLATION, THROUGH HOLE, SINGLE TRANSFORMERS PART NUMBER RATIO A (2%) OCL PRI (MH MIN) LL SEC (H MAX) CW/W (PF MAX) CD PRI (PF MAX) DCR PRI ( 25%) DCR SEC ( 25%) ISOLATION (VRMS MIN) IDC C (MA MAX) PACKAGE/ SCHEMATIC PE-64995 1CT:2CT 22 15 100 80 2.5 4.3 2000 1 IS-1 Mechanical Schematic IS -1 .558 MAX 14,20 .400 MAX 10,20 1 6 2 PE-6499X 5 DATE CODE 3 4 .400 10,20 .558 MAX 14,20 .400 10,20 PRI : SEC CL 1 6 2 5 3 4 CL .120 - .020 3,10 0,30 LEADS ARE 22 AWG SOLDERABLE Electrical Specifications @ 25C -- Operating Temperature 0C to 70C COIL A COIL B PART NUMBER RATIO A EQUIVALENT SINGLE PRIMARY PINS SECONDARY PINS RATIO A EQUIVALENT SINGLE PRIMARY PINS SECONDARY PINS PE-65495 1:2 PE-64995 1-4 16-13 1:2 PE-64995 5-8 12-9 Mechanical PACKAGE/ SCHEMATIC ID -1 Schematic ID-1 COIL A COIL B 16 15 14 13 12 1110 9 SEC PRI Dimensions: Inches 1 2 3 4 5 6 7 8 mm Unless otherwise specified all tolerances are .010 Singapore 65 6287 8998 Shanghai 86 21 62787060 China 86 755 33966678 Taiwan 886 3 4356768 USA 858 674 8100Germany 49 7032 7806 00,25 www.pulseeng.com 2 T604.E (10/10) ISDN S-INTERFACE TRANSFORMERS Transformer Selection & Packaging IC MANUFACTURER SINGLE THROUGH HOLE, 2 KVRMS DUAL SURFACE MOUNT IC PART NUMBER DUAL THROUGH HOLE TX & RX TX RX TX & RX AT&T/LUCENT T7903 PE-65795 PE-64995 PE-64995 PE-65495 MIETEC MTC-2072 PE-65795 PE-64995 PE-64995 PE-65945 MITEL MT8930 PE-65795 PE-64995 PE-64995 PE-65495 MOTOROLA MC145474/145475 MC145574 PE-65793 -- -- PE-65495 NATIONAL D TP3420/3421 PE-65795 PE-64995 PE-64995 PE-65495 SGS THOMSON ST5420, ST5421 PE-65795 PE-64995 PE-64995 PE-65495 PE-65795 PE-64995 PE-64995 PE-65495 PE-65795 PE-64995 PE-64995 PE-65495 PEB 2080/2081/2085 PSB 2186 PEB 2084/2086 7405B SIEMENS YAMAHA NOTES E. PE-65950 and PE-65853 are recommended for use with Siemens PEB 2080/2085 and help in meeting the required longitudinal balance. A. In this catalog, turns ratio is expressed as "primary:secondary". The term "CT" designates a center tapped winding. The term "CS" designates a split center tap 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 transmitter output and receiver input impedance requirements of CCITT 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 use 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 connecting only half the secondary winding. See National's application note. Packaging Information PACKAGE F TYPE PART WEIGHT PARTS/TUBE PARTS/TRAY PARTS/REEL REEL DIAMETER LA-1 SMT 2.0 GRAMS 30 60 250 13 INCHES 24 MM 24 MM SC-1 SMT 7.0 GRAMS 20 50 150 13 INCHES 44 MM 24 MM ID-1 THT 7.0 GRAMS 20 - - - - - IS-1 THT 4.0 GRAMS 35 - - - - - TAPE WIDTH PITCH USA 858 674 8100Germany 49 7032 7806 0Singapore 65 6287 8998Shanghai 86 21 62787060China 86 755 33966678Taiwan 886 3 4356768 www.pulseeng.com 3 T604.E (10/10) ISDN S-INTERFACETRANSFORMERS Surface Mount, Dual, 2000Vrms TE NT Sec : Pri Pri : Sec S-INTERFACE IC RCV IC XMIT Sec : Pri Pri : Sec Low Freq Choke RCV High Freq Choke High Freq Choke Low Freq Choke Local Power XMIT DC Supply Figure 1. Typical ISDN S-Interface Application Circuit 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 compliance of the system with I.430 on longitudinal conversion loss (LCL) and signal balance. This is accomplished by a well ACbalanced 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: 1. General Information - The S-interface is the standardized four-wire digital telephone access point defined by the CCITT I-series recommendations for the Integrated Services Digital Network. This "basic rate access" accommodates two 64Kbps "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. 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. * 10kHz to 300kHz: 60dB minimum * 300kHz to 1MHz: Minimum value decreasing 20dB/decade. (continued on next page) USA 858 674 8100Germany 49 7032 7806 0Singapore 65 6287 8998Shanghai 86 21 62787060China 86 755 33966678Taiwan 886 3 4356768 www.pulseeng.com 4 T604.E (10/10) ISDN S-INTERFACETRANSFORMERS Surface Mount, Dual, 2000Vrms HP-8751A Network Analyzer Out R A ISM-1 = Wandel and Goltermann Signal Balance Ratio Bridge B Pri Sec VT EL Terminating Resistor ISM-1 Figure 2. Longitudinal Balance Test Circuit an effective means of compliance with national and international regulations on EMI. They are designed 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. 2. (continued from previous page) A recommended test setup is shown in Figure 2. A high inductance "low frequency" common mode choke, such as PE-65950NL or PE-65853NL, is recommended to improve balance, or to correct inherent unbalances of some 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 low frequency end of 1MHz, it is reasonable to assume that the impedance seen from the line is entirely capacitive. The maximum capacitance budget, derived from the templates, is somewhat 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 budget is 800pF. As a rule, the 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. 5. Surge Voltage Capability for Transformers and Chokes * Longitudinal Voltage Peak: 2,400V 10/700sec * Metallic Voltage Peak: 800V 10/560sec 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 minutes without permanent damage. Such current may be caused by the telephone central battery. The transformer will also survive ringing voltages. These are nominally 120V or 200V maximum at 20 to 60Hz, limited by 1500W resistive or 400 to 600W inductive limiting. These may cause peak currents. 7. Flammability - Materials used in the products are recognized UL94-VO. Products meet the requirements of IEC 695-2-2 (Needle Flame Test). 4. Common Mode Chokes - The "high frequency" 4-wire common mode chokes shown on pages 7 and 8 provide USA 858 674 8100Germany 49 7032 7806 0Singapore 65 6287 8998Shanghai 86 21 62787060China 86 755 33966678Taiwan 886 3 4356768 www.pulseeng.com 5 T604.E (10/10) 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 @ 25C -- Operating Temperature 0C to 70C Part Number OCL Pri LL Sec (H MAX) CW/W (pF MAX) DCR (W MAX) Isolation (Vrms MIN) 6.0 mH MIN 1.0 mH MIN 4.7 mH 30% 4.7 mH 30% 35 10 1 1 25 10 60 50 1.40 0.70 1.20 1.00 1,500 1,500 500 500 24.0 H MIN 8.0 H MIN 47.0 H MIN 22.5 H MIN .20 .20 .18 .23 15 10 20 17 0.30 0.25 0.40 0.30 500 500 500 500 Package/ Schematic LOW FREQUENCY PE-65541NL PE-65542NL PE-65853NL E PE-65950NL E HIGH FREQUENCY PE-65554NL PE-65555NL PE-65854NL F PE-65857NL IS-4/1C (Through Hole) IS-4/1C (Through Hole) PA-2/5C (Surface Mount) IS-4/1C (Through Hole) IN-1/C (Through Hole) IN-1/C (Through Hole) SH-4/C (Surface Mount) LA-1/C (Surface Mount) 20K 18K 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. Impedance () 16K 14K 12K PE-65541 10K 8K PE-65950/65853 6K 4K PE-65542 2K 0 100 KHz 1 MHz 10 MHz Frequency -5 PE-65555 -10 -15 Typical impedance for high frequency common mode chokes based on a 100 system. PE-65554/65857 -20 PE-65854 -25 -30 1 MHz 10 MHz Frequency 100 MHz Impedance () Typical common mode attenuation for high frequency common mode chokes based on a 100 system. Attenuation (dB) 0 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 PE-65854 PE-65554/65857 PE-65555 1 MHz 10 MHz 100 MHz Frequency USA 858 674 8100Germany 49 7032 7806 0Singapore 65 6287 8998Shanghai 86 21 62787060China 86 755 33966678Taiwan 886 3 4356768 www.pulseeng.com 6 T604.E (10/10) ISDN S-INTERFACE TRANSFORMERS Common Mode Chokes for Telecom Applications Mechanicals1, 2 IN-1 SH-4 .300 7,62 MAX .595 MAX 15,11 8 7 6 5 .480 MAX 12,20 PE-XXXXX Date Code Country of Origin 1 2 3 .100 2,54 .300 7,62 LC 4 .130 - .010 3,30 - 0,25 CL IN-4 PA-2 LA-1 Schematics C 1. Dimensions: 1C 1 2 3 4 1 3 5 7 8 7 6 5 2 4 6 8 Inches .010 Unless otherwise specified all tolerances are mm 0,25 2. See page 3 for packaging information. 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 Pulse China Headquarters Pulse North China Pulse South Asia Pulse North Asia Einsteinstrasse 1 D-71083 Herrenberg Germany 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 2704/2705 Super Ocean Finance Ctr. 2067 Yan An Rd. West Shanghai 200336 China 135 Joo Seng Rd. #03-02 PM Industrial Bld g. Singapore 368363 Tel: 86 21 62787060 Fax: 86 2162786973 Tel: 65 6287 8998 Fax: 65 6287 8998 3F, No. 198 Zhongyuan Rd. Zhongli City Taoyuan County 320 Taiwan R. O. C. Tel: 886 3 4356768 Fax: 886 3 4356823 (Pulse) Fax: 886 3 4356820 (FRE) Tel: 49 7032 7806 0 Fax: 49 7032 7806 135 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. (c) Copyright, 2010. Pulse Engineering, Inc. All rights reserved. www.pulseeng.com 7 T604.E (10/10)