LE79R79-3
Ringing SLIC (Subscriber Line Interface Circuit)
Overview
We are transitioning to Microchip; this page will be directed to Le79R79 product page at www.microchip.com.
| The Le79R79-3 is a bipolar monolithic SLIC device that support integrated (on-chip) ringing, pin-for-pin compatibility and flexibility for varying loop lengths. With the Ringing SLIC, you can achieve significant system-level cost reductions while designing innovative linecard solutions. |
Detailed Block Diagram
Features & Benefits
- Through trapezoidal ringing
- On-chip ring-trip detector
- Low standby state power
- Battery operation:
- VBAT1: -40.5 to -75 V
- VBAT2: -19 V to VBAT1
- On-chip battery switching and feed selection
- On-hook transmission
- Two-wire impedance set by single external impedance
- Programmable constant-current feed
- Programmable Open Circuit voltage
- Programmable loop-detect threshold
- Current gain = 1000
- Ground-key detector
- Polarity reversal option available
- Internal VEE regulator (no external -5 V power supply required)
