ISL8700IBZ-T

Supervisors Overview

The ISL8700IBZ-T is an adjustable quad sequencer IC from the ISL870X family, designed to manage input power sequencing for high-performance DSPs, FPGAs, microprocessors, and subsystems. It monitors four input voltages within a nominal range of +2.5V to +24V. The device provides four delay-adjustable sequenced outputs with open-drain or open-collector configurations. Key features include user-adjustable timing for undervoltage/overvoltage compliance to sequencing start via an external capacitor in auto-start mode, and adjustable time delays between ENABLE output signals using external resistors. It operates over a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Provides four independently delay-adjustable sequenced outputs for precise power-up control
• Monitors distributed input voltages for overvoltage and undervoltage compliance
• Supports easy daisy-chaining to expand sequencing capabilities beyond four signals
• Requires minimal external components for implementation

Supervisors Applications

• Power sequencing for high-performance digital signal processors (DSPs)
• Input power management for field-programmable gate arrays (FPGAs)
• Voltage sequencing for microprocessor subsystems
• Multi-rail power supply initialization in complex electronic systems

Supervisors Procurement Notes

Verify component authenticity through authorized Renesas distributors due to discontinued status. Confirm package integrity and lead condition upon receipt. Validate datasheet revisions against current official documentation. Ensure storage conditions comply with moisture sensitivity level requirements. Cross-reference ordering part numbers with legacy Intersil specifications if sourcing from secondary markets.

Supervisors Selection Notes

Select this component when designing systems requiring synchronized multi-voltage power-up sequences for sensitive digital logic. Choose based on the required voltage monitoring range up to 24V and the need for adjustable timing delays. Consider the SOIC-14 package constraints and thermal performance within the specified operating temperature range. Evaluate external component availability for setting timing parameters.

Supervisors Part Context

The ISL8700IBZ-T belongs to the ISL870X series of adjustable quad sequencers originally developed by Intersil and later integrated into Renesas Electronics' portfolio. This family includes variants like the ISL8701 and ISL8702, which offer similar functionality but with different voltage ranges. The ISL8700 specifically supports higher voltage inputs compared to other members of the series.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.