MCP6546UT-E/OTVAO

Comparators Overview

The MCP6546UT-E/OTVAO is a single-channel analog comparator from the Microchip MCP6546 family, designed for low-power applications. It features an open-drain output capable of level shifting up to 10V and operates on a single supply voltage ranging from 1.6V to 5.5V. The device draws a typical quiescent current of 600 nA per comparator. Key electrical characteristics include a propagation delay of 4 µs (typical) with 100 mV overdrive, rail-to-rail input capability extending from VSS - 0.3V to VDD + 0.3V, and internal hysteresis of 3.3 mV (typical). It supports extended temperature operation up to +125°C.

Comparators Feature Summary

• Rail-to-rail input stage allows signal detection across the full supply range without phase reversal.
• Open-drain digital output facilitates wired-OR logic configurations and level shifting up to 10V.
• Internal hysteresis eliminates output chattering caused by input noise voltage.
• Optimized for low power consumption with sub-microamp quiescent current draw.

Comparators Applications

• Laptop Computers
• Mobile Phones
• Metering Systems
• Hand-held Electronics
• Alarm and Monitoring Circuits

Comparators Procurement Notes

Verify that the specific suffix 'E/OTVAO' corresponds to the Extended Temperature (-40°C to +125°C) variant within the SC-70-5 package as documented in official Microchip datasheets. Confirm automotive or industrial qualification requirements if applicable to the end-use environment. Ensure pull-up resistor values are selected appropriately for the target voltage levels, as the open-drain output requires external termination for proper high-state logic levels.

Comparators Selection Notes

Select this component when a single comparator with low quiescent current and rail-to-rail inputs is required. The open-drain output is suitable for interfacing with different logic families via level shifting. Consider the MCP6541 family if push-pull outputs are preferred instead of open-drain. Verify that the SC-70-5 package dimensions fit the available PCB space. Ensure the application does not require chip select functionality, which is available in the related MCP6548 model.

Comparators Part Context

This part belongs to the MCP6546/6R/6U/7/8/9 family of open-drain output comparators manufactured by Microchip Technology. The family includes single, dual, and quad configurations. The MCP6546 represents the single-channel version. Related devices like the MCP6541 offer push-pull outputs, while the MCP6548 includes a Chip Select pin for power management. All variants share similar low-power characteristics and input specifications.

Comparators Replacement Considerations

MCP6546UT-I/LT: Industrial temperature variant (-40°C to +85°C) in the same SC-70-5 package.

Comparators FAQ

Does the MCP6546UT-E/OTVAO experience phase reversal?

No, the device uses CMOS transistors at the input designed to prevent phase inversion even when input pins exceed the supply voltages.

What is the maximum output voltage for the open-drain pin?

The open-drain output can be pulled up to a maximum of 10V using an external resistor.