Overview

Description

The 3.3V family of Ringing Subscriber Line Interface Circuits (RSLICs) supports analog Plain Old Telephone Service (POTS) in short and medium loop length, wireless and wireline voice over broadband applications. Ideally suited for customer premise equipment, this family of products offers flexibility to designers with high ringing voltage and low power consumption system requirements. The ISL5585 family is capable of operating with 100V ringing battery supply, which translates directly to the amount of ringing voltage supplied to the subscriber. With the high operating voltage, subscriber loop lengths can be extended to 500Ω (i.e., 5,000 feet) and beyond, allowing this family to serve emerging Fiber In The Loop (FITL) markets. Other key features across the product family include 3.3V VCC operation, low power consumption, ringing using sinusoidal or trapezoidal waveforms, robust auto-detection mechanisms for when subscribers go on or off-hook, and minimal external discrete application components. Integrated test access features are also offered on selected products to support loopback testing as well as line measurement tests. There are ten product offerings of the ISL5585 providing various grades of ringing battery voltage and longitudinal balance.

Features

  • 3.3V operation
  • Onboard ringing generation
  • Low standby power consumption (75V, 65mW)
  • Programmable transient current limit
  • Improved off-hook software interface
  • Integrated MTU DC characteristics
  • Low external component count
  • Silent polarity reversal
  • Pulse metering and on-hook transmission
  • Tip open ground start operation
  • Balanced and unbalanced ringing
  • Thermal shutdown with alarm indicator
  • 28 Ld surface mount packaging
  • QFN package:
    • Compliant to JEDEC PUB95 MO - 220 QFN - Quad flat no leads - Package outline
    • Near chip scale package footprint, which improves PCB efficiency and has a thinner profile
  • Pb-free available (RoHS compliant)

Comparison

Applications

Applications

  • Short loop access platforms
  • Voice over Internet Protocol (VoIP)
  • Voice over cable and DSL modems
  • Internet protocol PBX
  • Fiber To The Home (FTTH)
  • Remote subscriber units
  • Ethernet terminal adapters

Documentation

Type Title Date
Datasheet PDF 993 KB
End Of Life Notice PDF 603 KB
End Of Life Notice PDF 1.17 MB
Product Change Notice PDF 86 KB
Application Note PDF 1.24 MB
Application Note PDF 1.90 MB
Manual - Development Tools PDF 783 KB
Application Note PDF 569 KB
Other PDF 653 KB
9 items

Design & Development

Software & Tools

Software Downloads

Type Title Date
PCB Design Files ZIP 888 KB
1 item

Boards & Kits

Boards & Kits

Models