Le79R79-1FQC
FEATURES
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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)
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DESCRIPTION
The Le79R79 Ringing SLIC device is a bipolar monolithic SLIC that offers on-chip ringing. Designers can achieve significant cost reductions at the system level for short-loop applications by integrating the ringing function on chip. Examples of such applications would be ISDN terminal adaptors, fiber-in-theloop, radio-in-the-loop, hybrid fiber/coax and video telephony (home-side) boxes. The Le79R79 Ringing SLIC device can...
