ISL5585BIMZ

Telecom Overview

The ISL5585BIMZ is a telecommunications interface integrated circuit belonging to the 3.3 Volt Ringing SLIC family designed for Voice Over Broadband applications. It operates from a single 3.3V VCC supply and supports ringing battery supplies up to 100V. The device features onboard ringing generation with low standby power consumption of 65mW at 75V. It includes programmable transient current limits, silent polarity reversal, pulse metering, and thermal shutdown with alarm indicators. The component is housed in a 28-lead PLCC surface mount package.

Telecom Feature Summary

• Onboard ringing generation supporting sinusoidal or trapezoidal waveforms
• Integrated MTU DC characteristics and improved off-hook software interface
• Low external component count design for simplified board layouts
• Thermal shutdown protection with alarm indicator functionality

Telecom Applications

• Analog Plain Old Telephone Service (POTS) systems
• Wireless and wireline Voice Over Broadband (VOB) equipment
• Customer Premise Equipment (CPE)
• Fiber In The Loop (FITL) markets

Telecom Procurement Notes

Verify the specific suffix 'BIMZ' against official Renesas documentation to confirm temperature range and package variations. Check for End-of-Life notifications as this component series has faced discontinuance actions. Confirm RoHS compliance status through the latest datasheet revision before procurement.

Telecom Selection Notes

Select this component for designs requiring high ringing voltage capability with extended subscriber loop lengths up to 500 ohms. Ensure the system architecture accommodates the 3.3V logic supply while managing the higher voltage ringing battery requirements. Evaluate the need for integrated test access features if loopback testing is required during manufacturing.

Telecom Part Context

This part belongs to the ISL5585 family of Subscriber Line Interface Circuits developed by Intersil, now part of Renesas Electronics. The family targets emerging broadband voice applications where low power consumption and high operating voltages are critical. Variants within the family differ primarily in packaging options such as QFN and PLCC.

Telecom Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Designers should consult official Renesas obsolescence notices for recommended alternatives.