www.DataSheet4U.com ISDN S-Bus TEW6045 is designed to comply with the requirements of an input/output transformer in the ISDN S-Bus Interface. TEW6045 complies with the requirements of CCITT I.430. It has been designed and approved for the following devices: Input/Output Transformer TEW6045 TEW6045 AMD Mitel 79C30A MT8930A, B & C MT8931A, B & C National TP3420 Siemens PEB2080 PEB2081 PEB2085 PEB2086 Cologne HFC-SP Intel 29C53 TEW6045-1 TEW6045-2 TEW6045-3 Motorola MC145574 Motorola MC145.