www.DataSheet4U.com CEPT/T1 TEW5716 is designed to be used, as a transmit transformer in the ISDN primary rate access network interfacing the Mitel MT89760/60B and MT89790/90B devices. TEW5716-4 is designed for MT89790B when operating from a single 5V dc source. Output Transformer TEW5716 Applications: Primary rate ISDN network nodes. PBX or computer to T1/CEPT Digital Trunks. TDM Multiplexers. MECHANICAL 0.40 1 Device 2 3 6 120 Ω 5 75 Ω Line side 4 Com. 0..