Description
The CPC7581 is a monolithic solid state switch in a 16 pin surface mount SOIC package. It provides the necessary functions to replace a 2-Form-C electromechanical relay on analog line cards found in Central Office, Access and PBX equipment. The device contains solid state switches for tip and ring line break and ring injection/ring return. The CPC7581 requires only a +5V supply and offers “break-before-make” or “make-before-break” switch operation using simple logic level input control. There are two versions of the CPC7581, the CPC7581BA and the CPC7581BB. The “BA” version has a protection SCR which provides protection to the SLIC device and subsequent circuitry during fault conditions.

FEATUREs
• Small 16 pin surface mount SOIC package
• Monolithic IC reliability
• Low matched RDSON
• Eliminates the need for zero cross switching
• Flexible switch timing to transition from ringing mode to idle/talk mode
• Clean, bounce free switching
• Tertiary Protection consisting of integrated current limiting, thermal shutdown and SLIC protection
• 5V operation with power consumption <10mW
• Intelligent battery monitor
• Latched logic level inputs, no drive circuitry
• Pin to pin compatible to the Lucent 7581 family

APPLICATIONs
• Central office (CO)
• Digital Loop Carrier (DLC)
• PBX Systems
• Digitally Added Main Line (DAML)
• Hybrid Fiber Coax (HFC)
• Fiber in the Loop (FITL)
• Pair Gain System
• Channel Banks