Description
The Quad ProSLIC® is a series of low-voltage CMOS devices that integrate both SLIC and codec functionality into a single IC to provide a complete four-channel analog telephone interface in accordance with all relevant Telcordia, ITU, and ETSI specifications. The Si3245 supports centralized ringing for long loop and legacy applications.

Features
- Performs all BORSCHT functions
- Ideal for applications up to 20 kft (6 km)
- External bulk ringer support
- Power offloading
- Low power consumption
- 2.5 Vrms pulse metering (12/16 kHz)
- Software programmable parameters:
    - Two-wire ac impedance
    - Transhybrid balance
    - DC current loop feed (10–50 mA)
    - Loop closure and ring trip thresholds
    - Ground key detect threshold
    - Power alarms
- Automatic switching of up to three battery supplies
- On-hook transmission
- Loop or ground start operation
- Smooth polarity reversal
- DTMF decoder
- Dual tone generators
- Caller ID generator
- A-Law/µ-Law companding, linear PCM
- PCM and SPI bus digital interfaces with programmable interrupts
- GCI/IOM-2 mode support
- 3.3 V operation
- GR-909/844 loop diagnostics
- Audio diagnostics with loopback
- Pb-free/RoHS compliant packages

Applications
- Digital loop carrier (DLC) line cards
- Central office (CO) line cards
- Integrated voice and data (IVD) line cards
- Private Branch Exchange (PBX) systems