YCL PI1268XX SERIES T1/CEPT/ISDN-PRI Transformers Feature Isolation Voltage : 1500Vrms. Dual Surface mount type. Specification Part No. PI126816 PI126817 PI126818 PI126819 PI126820 PI126821 PI126822 PI126823 See note Turn Ratio OCL LL Sec. (Pri : Sec) (mH min.)Pri. (H max.) A B A B A B 1:1.15CT 1CT:2CT 1.5 1.2 0.8 0.6 1CT:2CT 1:1.36CT 1.2 1.2 0.6 0.8 1CT:2CT 1:1.08CT 1.2 1.2 0.6 0.6 1CT:2CT 1CT:2CT 1.2 1.2 0.6 0.6 1CT:2CT 1:1 1.2 1.2 0.3-0.55 0.8 1:2CT 1:1.14CT 1.2 1.2 0.55 0.8 1:1/1.26 1:2CT 1.5 1.2 0.4 0.5 1:1/1.26 1:1/1.26 1.5 1.5 0.4 0.4 Cww (pF)max A B 35 35 35 37 40 30 35 35 30 30 40 35 40 40 45 45 DCR Pri. ( max.) A B 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.8 0.8 DCR Sec. ( max.) A B 0.9 1.2 1.2 0.9 1.10 0.9 1.2 1.2 1.2 0.7 1.2 0.9 0.9 1.2 1.0 1.0 Schematic S4 S1 S1 S2 S3 S5 S5* S6* Typical Application The PI1268XX series provide the functionality of isolation Transformer that have been specifically designed for implementation of primary rate access in ISDN. Primary rate is used where the requirements for channel capacity exceed that of the basic rate. The primary rate access accommodates 23 duplex 64Kbps `B-channel' for information ,one duplex 64Kbps `D-channel' for signal and control for North American System. The primary rate access also provide 30 B-channel and one D-channel for Europe System. The technigue of line coding are B8ZS(Bipolar with 8-zeros substitution) and HDB3(high density Bipolar 3 zeros) for North American and Europe area respectively. The date rate are 1.544Mbps and 2.048Mbp for North American and Europe system respectively. Typical application configuration have been shown on figure 1. PBX Central Office TE 23 B channels NT TE NT LT T1 Interface S Interface Figure 1 FEB. 1999 R0 Data Sheet Subject to Change without notice SHEET 1 OF 2 PI1268XX SERIES Schematic 12 Pri. S1 11 10 9 1 2 3 4 8 Pri. 7 12 6 1 Pri. 11 10 2 S2 9 3 4 S3 8 7 5 6 Pri. 12 11 10 1 2 3 Pri. 8 5 Pri. 7 12 6 1 Pri. 2 S4 10 9 3 4 8 7 5 6 Pri. 12 1 Pri. 2 S5 10 9 3 4 8 Pri. 7 12 6 1 Pri. S6 Pri. 10 9 3 4 2 7 5 6 Dimension Note : Part Number Turn ratio Sec Pins Turn Ratio Sec. Pins PI126822 1:1 2-3 1:1.26 1-3 PI126823 1:1 2-3/5-6 1:1.26 1-3/4-6 Unless otherwise specified, all tolerances are mm(inch) 0.25 (0.010) For More Information Head Quarters Asia USA EUROPE Taiwan : Taiwan : San Diego : FRANCE : Tel : (619)5363147,5363148. Fax: (619)5363152 Email: jamescudworth@ycl.com.tw Email:stephensedio@ycl.com.tw Tel : (33)247443901 Fax : (33)247447806 Email:mab007@calva.net Email:brbsarl@aol.com Tel: 886-7-7458587 Fax: 886-7-7459120 Tel: 886-2-27962878 Fax: 886-2-27912635 Email:dennis@ycl.com.tw YCL Data Sheet Subject to Change without notice FEB. 1999 R0 SHEET 2OF 2