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MCP6544-I/SL

MCHPMCP6544-I/SL

Microchip Technology
Comparator Standard (General Purpose) CMOS, Push-Pull, Rail-to-Rail, TTL 14-SOIC
Active483 in stock
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Overview

The MCP6544-I/SL is a quad, ultra-low-power comparator designed for single-supply operation down to 1.6V. It features a push-pull output stage that eliminates the need for external pull-up resistors while maintaining compatibility with CMOS and TTL logic levels. With a typical quiescent current of only 600nA per comparator, it is optimized for battery-powered systems where power consumption is critical.

Why Choose This Part

The device offers a significant power advantage with a maximum quiescent current of 1uA, extending battery life in always-on applications. It includes 6.5mV of internal hysteresis to prevent output oscillations caused by noisy input signals. The rail-to-rail input capability and wide supply range (1.6V to 5.5V) provide flexibility for interfacing with various low-voltage logic families.

Applications

Battery-Powered Monitoring
Ideal for low-voltage battery supervisors and alarm circuits in portable devices due to its sub-microamp current draw.
Windowed Comparators
The quad-channel configuration and rail-to-rail inputs allow for efficient implementation of upper and lower limit detection circuits.
RC Timer Circuits
Utilizes ultra-low input bias current (1pA typical) to allow for long time constants with high-impedance timing components.
Hand-held Electronics
Saves board space and power in mobile phones and handheld meters that require basic signal threshold detection.

Key Specifications

Type Standard (General Purpose)
Hysteresis 6.5mV
Output Type CMOS, Push-Pull, Rail-to-Rail, TTL
Mounting Type Surface Mount
Package / Case 14-SOIC (0.154", 3.90mm Width)
CMRR, PSRR (Typ) 70dB CMRR, 80dB PSRR
Number of Elements 4
Operating Temperature -40degC ~ 85degC
Propagation Delay (Max) 8us
Supplier Device Package 14-SOIC
Current - Quiescent (Max) 1uA
Current - Input Bias (Max) 1pA @ 5.5V
Voltage - Input Offset (Max) 7mV @ 5.5V
Voltage - Supply, Single/Dual (+/-) 1.6V ~ 5.5V

Getting Started

To evaluate this part, use a SOIC-14 to DIP adapter for breadboard prototyping. Ensure bypass capacitors (typically 0.1uF) are placed close to the VDD pin to maintain stability, especially when switching capacitive loads. Since the output is push-pull, do not tie multiple outputs together or use them in wired-OR configurations.

Part of Microchip MCP6xxx Op-Amps family » MCP6544

MCP6544 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Temp Range Stock
MCP6544-I/SL (this part) SOIC-14 -40degC ~ 85degC 483
MCP6544-E/P DIP-14 -40degC ~ 125degC 440

Also Consider

LM339ADR TITexas Instruments - A standard quad comparator choice if higher power consumption and higher supply voltages are acceptable in exchange for lower cost.

Categories

Analog ICs > Comparators