ISDN S-INTERFACE LOW PROFILE DUAL SMT TRANSFORMERS RoHS peak reflow temperature rating 245°C Meets pulse waveform template of CCITT I.430 when recommended transformer and chip pair are used Excellent longitudinal balance 2 KVrms isolation voltage Available in Tape & Reel or tube packaging UL recognized Electrical Specifications @ 25°C — Operating Temperature 0°C to 70°C RoHS Compliant Part Number Ratio A (±2%) OCL Pri (mH MIN) LL Sec CW/W (µH MAX) (pF MAX) CD Pri B (pF MAX) DCR Pri ( ±25%) DCR Sec (W ±25%) D IDC C (mA MAX) T5005NL A 1:2.5 B 1:2.5 A&B 22 A 40 B 40 A&B 100 A 110 B 110 A 2.4 B 2.4 A 5.3 B 5.3 T5007NL 1:2 1:2 22 5 5 100 80 80 2.4 2.4 4.2 4.2 1 T5008NL 1:1 1:1 22 5 5 100 42 42 2.4 2.4 2.4 2.4 1 T5010NL 1:1.8 1:1.8 22 15 15 100 160 160 2.4 2.4 3.8 3.8 1 1 U.S. Patent No. 5,015,981Z A. 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. B. Minimum primary inductance and 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. C. The maximum specified unbalanced DC current capability is based on 20 mH minimum primary OCL. See next page for detailed packaging information. Mechanical Schematic TSJ 16 15 14 13 12 11 10 9 SEC PRI 1 2 3 4 COIL A 5 6 7 8 COIL B Dimensions: Inches mm 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 32181071 • China 86 755 33966678 • Taiwan 886 3 4643715 www.pulseeng.com 1 T613.C (10/09) ISDN S-INTERFACE LOW PROFILE DUAL SMT TRANSFORMERS IC Manufacturer IC Part Number Dual Surface Mount Packaging Information TX & RX Type T5005NL T5007NL T5007NL Part Weight Mietec T7250/7256/7259 T7903 MTC-2072 Mitel MT8930 T5007NL Motorola MC145474/145475 MC145574 T5008NL T5005NL Reel Diameter Tape Width National* 44 mm TP3420/3421 T5007NL Pitch 24 mm SGS Thomson ST5420, ST5421 T5007NL Siemens PEB 2080/2081/2085 PSB 2186 PEB 2084/2086 T5007NL Yamaha 7405B, YTD421 T5007NL B 29C53 T5010NL AT&T/Lucent SMT 7 grams Parts/Tube 20 Parts/Tray* 50 Parts/Reel* 200 13 inches *NOTE: Standard packaging for all transformers on this data sheet is anti-static tubes. Optional Tape & Reel packaging can be ordered by adding a “T” suffix to the end of the part number, (i.e: T5005NLT). *NOTE: National recommends a 1:2 receive transformer, but used as a 1:1 ratio by connecting only half the secondary winding. Application Notes 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 64 Kbps “B-channels” for information, one 16Kbps “D-channel” intended for signaling and control, and 48Kbps for framing and other purposes, giving a total rate of 192Kbps. The CCITT physical layer recommends that the user network interface be transformer coupled. 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. 2. Safety Standards Recognition – All transformers listed in this data sheet are recognized to UL 1459 and UL 1950 as a basic insulation barrier. The transformeAr 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. 3. Flammability – Materials used in the products are recognized UL94-VO. Products meet the requirements of IEC 695-2-2 (needle flame test). 4. For more application notes please refer to data sheet T604. Transformers described in this data sheet are matched to the transceivers offered by the IC manufacturers listed. Common Mode Chokes Refer to data sheet G002 for selection of low and high frequency common mode chokes. For More Information: Pulse Worldwide Headquarters Pulse Europe Pulse China Headquarters Pulse North China 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 B402, Shenzhen Academy of Aerospace Technology Bldg. 10th Kejinan Rd. High-Tech Zone Nanshan District Shenzen, PR China 518057 Tel: 49 7032 7806 0 Tel: 86 755 33966678 Fax: 49 7032 7806 135 Fax: 86 755 33966700 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. www.pulseeng.com 2 T613.C (10/09)