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.

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)

 

Documentation

• Le79R79 Datasheet

Design Manuals

Software Manuals

Application Notes

• Am79R70/79/100/101 Ringing SLIC Device Technical Overview
• Le79R100/101 vs. Le79R79 Comparsion Appnote
• Le79R79 RSLIC Guide Appnote
• Le79R79 Call Processing Considerations Appnote
• Telephone Line Card Power Considerations Appnote
• SLIC Dial Pulse Performance Appnote

Product Previews

• VE79R Product Preview
• VE580 Series Product Preview

Evaluation Boards

• Le71HE0040J Evaluation Board Users Guide

Reference Designs

• Le71HR0021 Reference Design Users Guide

Software URLs

• LE71SK0002: VoicePath API-II Software
• LE71SDKWIN: WinSLAC
• LE71SDKVPS: VP-Script
• LE71SDKUVB: UVB Images
• LE71SDKPRO: Profile Wizard

Typical Applications

Ideal for short-loop applications

Ideal for ISDN-TA and fixed radio access applications

Integrated Access Devices (IADs)

Network Interface Units (NIUs)

Cable Modems

DSL Modems

Set Top / House Side Boxes

Intelligent PBX

Pair Gain

FXS Cards

Voice over ISDN or T1/E1

Smart Residential Gateways

WLL, APON, FITL, NGN, and all other short-loop CPE/ Enterprise telephony applications

White Papers

• Achieving Ultra-Low Power RF in Short-Range Apps

Product Packaging & Availability

Part Number	Package Type	Pin Count	Lead-Free Option	Shipping Option(s)	Lead Time(wks)	Status
LE79R79-3DJC	PLCC	32	GREEN	Tube	10-12 weeks	Production
LE79R79-3DJC	PLCC	32	GREEN	Tube	10-12 weeks	Production
LE79R79-3DJCT	PLCC	32	GREEN	TR	10-12 weeks	Production
LE79R79-3DJCT	PLCC	32	GREEN	TR	10-12 weeks	Production

Packaging Information

• Soldering Profiles
• Moisture Sensitivity
• Shelf Life
• Reliability Data

Technical Support

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