LE79R70-1
Ringing SLIC (Subscriber Line Interface Circuit)
Overview
We are transitioning to Microchip; this page will be directed to Le79R70 product page at www.microchip.com.
| The Le79R70-1 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
- Ideal for ISDN-TA and set top applications
- On-chip ringing with on-chip ring-trip detector
- Low Standby state power
- Battery operation:
- VBAT1: -40 V to -67 V
- VBAT2: -19 V to VBAT1
- On-chip battery switching and feed selection
- On-hook transmission
- Polarity reversal option
- Programmable constant-current feed
- Programmable open circuit voltage
- Programmable loop-detect threshold
- Two-wire impedance set by single component
- Ground-key detector
- Tip Open state for ground-start lines
- Internal VEE regulator (no external -5 V power supply required)
- Two on-chip relay drivers and snubber circuits
- Space-saving package options (8x8 QFN)
