PL IA N T Features M ■ Compact surface mount packaging ■ Contains both transmit and receive CO *R oH S This series is OBSOLETEAND not recommended for new designs. transformer in a single package PT YY 7434 WW 4L ■ Isolation voltage: 1500 Vrms ■ RoHS compliant* Applications ■ Telecom PT74344L - T1/CEPT/ISDN-PRI Transformer Electrical Specifications @ 25 °C Turns Ratio ±5 % ............................ 1:1.15CT & 1CT:2CT Primary Inductance (mH min.) ........................................... 1.20 & 1.20 Primary Leakage Inductance (µH max.) ........................................... 0.60 & 0.60 Cww (pF max.) ............................ 30 & 30 Pri DCR (Ω max.) .................. 0.70 & 0.70 Sec DCR (Ω max.) ................ 0.70 & 1.00 Primary Pins ............................ 16-14, 6-8 Operating Temperature (°C) ....... 0 to +70 *CT : center tap Electrical Schematic 1 Product Dimensions 16 PT74344L 2 (DATE) 3 14 6 11 0.46 TYP. (.018) 7 10 12.83 MAX. (.505) 8 9 6.22 MAX. (.245) E T E L O S B O 1.27 (.050) Packaging Specifications Tape and Reel* .................. 700 pcs./reel *”E” suffix before “L” in part number designates tape & reel packaging, e.g. PT74344EL. How To Order 1.02 TYP. (.040) PT74344E L Model Termination L = Tin only (RoHS Compliant) 16X 0.38 TYP. (.015) 8.89 (.350) 7.1 MAX. (.280) .102 Coplanarity: (.004) 9.15 ± 0.25 (.360 ± .010) 8.89 (.350) 1.91 (.075) 1.27 (.050) 8.38 (.330) 0.71 TYP. (.028) Recommended PAD layout DIMENSIONS: MM (INCHES) TOLERANCES: ± 0.25 (.010) NOTE: DIMENSIONS ARE EXCLUSIVE OF SOLDER REV. 05/13 *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications.