| Function Interface Number of Circuits Voltage - Supply Current - Supply Power (Watts) Operating Temperature Mounting Type Package / Case Supplier Device Package | Quad Digital Adapter for Subscriber Loops (QDASL) ISDN 4 4.75 V ~ 5.25 V 75mA - 0°C ~ 70°C Surface Mount 28-LCC (J-Lead) 28-PLCC (11.51x11.51) |