MABA-011104 Step Down Auto Transformer MACOM MABA-011104 Step Down Auto Transformer features a 1218MHz max. frequency, a 1.5:1 impedance rating, and a 200mA DC current. This MACOM MABA-011104 Transformer is ideally suited to match single-ended 50 to 75Ω impedance in CATV DOCSIS 3.1 nodes and line extenders. MACOM MABA-011104 Step Down Auto Transformer operates in the -40°C to +85°C temperature range.