CPC7581

INTEGRATED CIRCUITS DIVISION CPC7581 Line Card Access Switch Features Low, Matched RON Eliminates the Need for Zero-Cross Switching 5V Operation With Power Consumption < 10 mW Flexible Switch Timing for Transition from Ringing Mode to Idle/Talk Mode Clean, Bounce-Free Switching Tertiary Protection Consisting of Integrated Current Limiting, Thermal Shutdown for SLIC Protection Intelligent Battery Monitor Latched Logic-Level Inputs, No External Drive Circuitry Required SOIC Package Pin-Compatible With Legerity Product Small 16-pin SOIC Package Monolithic IC reliability 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 Figure 1. CPC7581 Block Diagram Description The CPC7581 is a monolithic solid-state four-pole switch in a 16-pin package. It provides the necessary functions to replace a 2-Form-C electromechanical relay on traditional analog and integrated voice and data (IVD) line cards found in central office, access, and PBX equipment. The CPC7581 contains solid-state switches for tip and ring lead line break and ringing injection/ringing return. The device requires only a +5 V supply, and offers break-before-make and make-before-break operation using logic-level inputs. The CPC7581BA versions include an SCR that provides protection to the SLIC and subsequent circuitry during a fault condition. Ordering ...