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CPC7691BB Datasheet(PDF) 1 Page - Clare, Inc. |
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CPC7691BB Datasheet(HTML) 1 Page - Clare, Inc. |
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1 / 17 page  DS-CPC7691 - R00E PRELIMINARY 1 RoHS 2002/95/EC e3 Pb CPC7691 Line Card Access Switch Features • Improved switch dV/dt immunity of 1500 V/ μs • Drop-In Replacement for CPC7591 • Replaces CPC7581, and allows removal of power-up control discrete components • TTL logic level inputs for 3.3V logic interfaces • Smart logic for power up / hot plug state control • Small 16-pin SOIC package • Monolithic IC reliability • Low, matched R ON • Eliminates the need for zero-cross switching • Flexible switch timing for transition from ringing mode to idle/talk mode. • Clean, bounce-free switching • Tertiary protection consisting of integrated current limiting, voltage clamping, and thermal shutdown for SLIC protection • 5 V operation with power consumption < 10.5 mW • Intelligent battery monitor • Latched logic-level inputs, no external drive circuitry Applications • VoIP Gateways • 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 Description The CPC7691 is a member of Clare’s third-generation Line Card Access Switch (LCAS) family. This monolithic 4-pole solid state switch is available in a 16-pin SOIC package. It provides the necessary functions to replace the 2-Form-C electromechanical ringing relay and it’s associated snubber circuitry on traditional analog line cards or contemporary integrated voice and data (IVD) line cards found in Central Office (CO), Access, and PBX equipment. Because this device contains solid state switches for tip and ring line break and for ringing injection/return, it requires only a +5 V supply for operation and TTL logic-level inputs for control. The CPC7691 provides stable start-up conditioning during system power up and for hot plug insertion applications. Once active, the inputs respond to traditional TTL logic levels, enabling the CPC7691 to be used with 3.3V-only logic. For negative transient voltage protection the CPC7691BA version includes SCRs to provide voltage fold-back protection for the SLIC and subsequent circuitry, while the CPC7691BB version utilizes clamping diodes to the VBAT pin. For positive transient voltage protection all versions provide clamping diodes to the FGND pin. Ordering Information Figure 1. CPC7691 Block Diagram Device Description CPC7691BA With Protection SCR, in Tubes (50/Tube) CPC7691BATR With Protection SCR, Tape & Reel (1000/Reel) CPC7691BB Without Protection SCR, in Tubes (50/Tube) CPC7691BBTR Without Protection SCR, Tape & Reel (1000/Reel) CPC7691 T LINE R LINE T BAT V DD R BAT D GND V BAT F GND V REF IN RINGING T SD LATCH 3 6 14 2 7 8 9 16 1 12 15 10 11 L A T C H Switch Control Logic SCR Trip Circuit (CPC7691xA) +5 Vdc Tip Ring SLIC Secondary Protection X X X X SW2 SW4 RINGING 300 (min.) Ω T RINGING SW3 SW1 V BAT R RINGING |
Similar Part No. - CPC7691BB |
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Similar Description - CPC7691BB |
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