MCP6546RT-E/OT

Comparators Overview

The MCP6546RT-E/OT is a single-channel analog comparator from the Microchip Technology MCP6546 family, housed in a SOT-23-5 surface-mount package. It operates on a single supply voltage ranging from 1.6V to 5.5V with a typical quiescent current of 600 nA per comparator. The device features rail-to-rail input capability extending from VSS - 0.3V to VDD + 0.3V and an open-drain output capable of supporting pull-up voltages up to 10V. Key electrical specifications include a typical propagation delay of 4 µs at 100 mV overdrive, an input offset voltage of ±7 mV, and an internal hysteresis of 3.3 mV. It supports an industrial temperature range of -40°C to +85°C.

Comparators Feature Summary

• Rail-to-rail input operation allows signal detection across the full supply voltage range without phase reversal issues.
• Open-drain digital output facilitates level-shifting applications and wired-OR logic configurations using external pull-up resistors.
• Integrated internal hysteresis eliminates output chattering caused by input noise voltage while maintaining low switching currents.

Comparators Applications

• Laptop computers
• Mobile phones
• Metering systems
• Hand-held electronics
• Alarm and monitoring circuits

Comparators Procurement Notes

Verify that the ordering suffix 'RT' corresponds to the specific reel or cut tape packaging configuration required for your assembly line. Confirm the 'E' suffix indicates the extended temperature grade (-40°C to +125°C) if higher thermal performance is needed beyond the standard industrial range. Ensure the SOT-23-5 footprint matches your PCB design constraints before finalizing procurement.

Comparators Selection Notes

Select this component when a single comparator with ultra-low power consumption is required for battery-operated devices. The open-drain output is suitable for interfacing with various logic families via pull-up resistors. Consider the MCP6546R variant if a different pinout arrangement within the same package is preferred, or the MCP6546U for SC-70-5 packaging options.

Comparators Part Context

This part belongs to the MCP6546/6R/6U/7/8/9 family of sub-microamp comparators fabricated on CMOS process technology. The family includes single, dual, and quad configurations, as well as variants with chip select capabilities like the MCP6548. These devices are optimized for low-power, single-supply applications where minimizing dynamic power consumption during switching is critical.

Comparators Replacement Considerations

The MCP6546R-E/OT offers the same electrical characteristics but utilizes a different pinout arrangement within the SOT-23-5 package. For SC-70-5 packaging, the MCP6546U series serves as a physical alternative. Push-pull output versions such as the MCP6541/2/3/4 family provide CMOS/TTL-compatible outputs but lack the open-drain level-shifting capability.