MCP6544T-I/ST Equivalent & Substitute Parts

Part Overview

The MCP6544T-I/ST is a general-purpose CMOS comparator manufactured by Microchip Technology, featuring four independent comparator elements in a 14-TSSOP surface-mount package. The device operates across a supply voltage range of 1.6V to 5.5V with push-pull, rail-to-rail, and TTL-compatible outputs. Currently in active product status with 2660 units in stock, this comparator is widely used in signal conditioning, threshold detection, and level-shifting applications. Equivalent and substitute parts are identified based on matching functional specifications, package compatibility, and electrical performance parameters.

Substiute Parts

MCP6544T-I/ST

Microchip TechnologyIn Stock: 2691MCP6544T-I/ST Datasheet

Current PartRFQ

MCP6544-I/ST

Microchip TechnologyIn Stock: 1819MCP6544-I/ST Datasheet

DirectRFQ

APX339TSG-13

Diodes IncorporatedIn Stock: 5475APX339TSG-13 Datasheet

MFR RecommendedRFQ

MAX978ESE+T

Analog Devices Inc./Maxim IntegratedIn Stock: 5708MAX978ESE+T Datasheet

MFR RecommendedRFQ

TLV3704CD

Texas InstrumentsIn Stock: 983TLV3704CD Datasheet

MFR RecommendedRFQ

TLV3704CPW

Texas InstrumentsIn Stock: 2383TLV3704CPW Datasheet

MFR RecommendedRFQ

TLV3704ID

Texas InstrumentsIn Stock: 991TLV3704ID Datasheet

MFR RecommendedRFQ

TLV3704IDR

Texas InstrumentsIn Stock: 7129TLV3704IDR Datasheet

MFR RecommendedRFQ

TS884IPT

STMicroelectronicsIn Stock: 1938TS884IPT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MCP6544T-I/ST are classified based on the following substitution criteria:

Direct Packaging Equivalent (Same Package, Identical Specifications): MCP6544-I/ST differs only in packaging format (Tube vs. Tape & Reel) while maintaining identical electrical specifications and 14-TSSOP form factor.

Functional Equivalents (Same Element Count, Compatible Output Type, Matching Package): TLV3704CPW and TS884IPT provide four-element comparator functionality in 14-TSSOP packages with push-pull outputs and rail-to-rail operation. These parts maintain compatibility with the MCP6544T-I/ST pinout and package footprint.

Cross-Package Alternatives (Different Package, Comparable Electrical Performance): TLV3704ID and TLV3704CD offer four-element comparator functionality in 14-SOIC packages with CMOS push-pull rail-to-rail outputs. These parts provide electrical equivalence but require PCB layout modification due to package change.

Performance-Enhanced Alternatives (Superior Specifications, Different Package): MAX978ESE+T provides enhanced performance characteristics including lower input offset voltage (2mV vs. 7mV), faster propagation delay (28ns vs. 8µs), and higher CMRR/PSRR ratings (95dB/100dB vs. 70dB/80dB), packaged in 16-SOIC format.

Open-Drain Output Alternative (Different Output Type, Same Package): APX339TSG-13 offers four-element comparator functionality in 14-TSSOP package with open-drain output configuration, suitable for applications requiring pull-up resistor termination.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (No Design Changes Required): MCP6544-I/ST provides identical electrical and functional specifications to the MCP6544T-I/ST, differing only in packaging format (Tube vs. Tape & Reel). Both parts maintain Active product status and ROHS3 compliance. Selection between these variants depends on procurement and assembly requirements.

For Same-Package Substitution (14-TSSOP, Active Status): TS884IPT from STMicroelectronics offers four-element comparator functionality in the same 14-TSSOP package with Active product status. This part features lower quiescent current (500nA vs. 1µA) and extended operating temperature range (-40°C to 125°C vs. -40°C to 85°C). Electrical performance is comparable with 6mV input offset voltage and 16µs propagation delay.

For Enhanced Performance (Different Package Required): MAX978ESE+T provides superior electrical specifications including lower input offset voltage (2mV), significantly faster propagation delay (28ns), and higher CMRR/PSRR ratings (95dB/100dB). This part requires 16-SOIC package accommodation and maintains Active product status with unlimited MSL rating. Suitable for applications requiring tighter offset specifications and faster response times.

For Open-Drain Output Applications (14-TSSOP Package): APX339TSG-13 from Diodes Incorporated provides four-element comparator functionality with open-drain output configuration in 14-TSSOP package. This part is suitable for applications requiring external pull-up resistor termination and maintains Active product status.

Parts to Avoid for New Designs: TLV3704CPW, TLV3704ID, and TLV3704CD carry Last Time Buy or Obsolete product status designations. While currently in inventory, these parts are not recommended for new design implementations due to discontinued manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can MCP6544-I/ST be used as a direct replacement for MCP6544T-I/ST? A: Yes. Both parts are manufactured by Microchip Technology with identical electrical specifications, element count, output type, and 14-TSSOP package. The only difference is packaging format (Tube vs. Tape & Reel). Verify procurement and assembly compatibility with your supplier.

Q: What is the key difference between MCP6544T-I/ST and TS884IPT? A: Both are four-element comparators in 14-TSSOP packages with comparable performance. TS884IPT offers lower quiescent current (500nA vs. 1µA) and extended temperature range (-40°C to 125°C). MCP6544T-I/ST provides TTL-compatible output and slightly faster propagation delay (8µs vs. 16µs). Both maintain Active product status.

Q: Why does MAX978ESE+T require a different package? A: MAX978ESE+T is packaged in 16-SOIC format instead of 14-TSSOP. This package change accommodates enhanced performance specifications including lower input offset voltage and faster propagation delay. PCB layout modification is required for implementation.

Q: Can APX339TSG-13 replace MCP6544T-I/ST in all applications? A: APX339TSG-13 provides four-element comparator functionality in the same 14-TSSOP package but features open-drain output instead of push-pull. Applications requiring push-pull output require external pull-up resistors. Verify output type compatibility with your circuit design.

Q: Should I use TLV3704 series parts for new designs? A: TLV3704CPW, TLV3704ID, and TLV3704CD carry Last Time Buy or Obsolete status. These parts are not recommended for new design implementations. Use Active status alternatives such as MCP6544T-I/ST, TS884IPT, or MAX978ESE+T instead.

Q: What are the supply voltage compatibility considerations? A: MCP6544T-I/ST operates from 1.6V to 5.5V. TS884IPT extends the lower limit to 1.1V. TLV3704 series and MAX978ESE+T require minimum 2.5V to 2.7V supply voltage. Verify your application's supply voltage range against each substitute part specification before selection.

Q: How do propagation delay differences affect circuit performance? A: MCP6544T-I/ST specifies 8µs maximum propagation delay. MAX978ESE+T provides significantly faster 28ns response. TS884IPT specifies 16µs. Faster propagation delay improves response time in high-speed threshold detection and signal conditioning applications. Verify timing requirements for your specific application.