LT1017IS8#PBF

Overview

The LT1017IS8#PBF is a micropower dual comparator manufactured by Analog Devices Inc. It operates from a single supply voltage ranging from 1.1V to 40V. The device features an internal class B pull-up current source, eliminating the need for external resistive pull-ups. Key electrical specifications include a maximum offset voltage of 1mV and a maximum bias current of 15nA. Typical output drive capability is 70mA. The component is housed in an 8-lead plastic SO package and supports an industrial operating temperature range from -40°C to +85°C.

Feature Summary

• Optimized for lowest operating power consumption within the LT1017/LT1018 family
• Internal Class B pull-up current source removes requirement for external resistive components
• Output stage designed to drive loads connected to supplies more positive than V+
• On-chip trimming minimizes offset voltage while maintaining high gain and common mode rejection

Applications

• Power supply monitors
• Relay driving circuits
• Oscillators

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing. Confirm the IS8 designation corresponds to the Industrial temperature grade (-40°C to +85°C) and the S8 narrow plastic SOIC package format. Ensure compatibility with existing board layouts referencing older dual comparator pinouts.

Selection Notes

Select this part for applications requiring minimal quiescent current alongside robust output drive capabilities. The internal pull-up simplifies design compared to open-collector alternatives. Consider the LT1018 variant if higher speed is required, as it operates at higher power levels. Verify that the 1.1V minimum supply voltage meets the system's low-power constraints.

Part Context

This component belongs to the LT1017/LT1018 series of general-purpose micropower comparators. The LT1017 variant specifically targets ultra-low power operation, whereas the LT1018 offers higher speed at increased power consumption. Both share pin compatibility with legacy dual comparator designs, facilitating direct upgrades in established systems.

Replacement Considerations

The datasheet notes pin compatibility with older dual comparators such as 393 type devices. No specific substitute part numbers are explicitly confirmed in the provided documentation.