MCP6544T-E/SL Equivalent & Substitute Parts

Part Overview

The MCP6544T-E/SL is a general-purpose CMOS comparator manufactured by Microchip Technology, featuring four independent comparator elements in a 14-SOIC surface-mount package. This device operates across a supply voltage range of 1.6V to 5.5V and delivers rail-to-rail, push-pull, TTL-compatible outputs suitable for precision signal detection and threshold monitoring applications. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or specific application performance parameters that fall within acceptable tolerance ranges for the intended circuit function.

Substiute Parts

MCP6544T-E/SL

Microchip TechnologyIn Stock: 4171MCP6544T-E/SL Datasheet

Current PartRFQ

MCP6544-E/SL

Microchip TechnologyIn Stock: 4260MCP6544-E/SL Datasheet

DirectRFQ

MAX978ESE+

Analog Devices Inc./Maxim IntegratedIn Stock: 1148MAX978ESE+ Datasheet

MFR RecommendedRFQ

TLV3494AIPWT

Texas InstrumentsIn Stock: 962TLV3494AIPWT Datasheet

MFR RecommendedRFQ

TS884IDT

STMicroelectronicsIn Stock: 2610TS884IDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MCP6544T-E/SL are classified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Number of comparator elements: 4 independent channels
• Output configuration: Push-pull, rail-to-rail capability
• Supply voltage range overlap: Minimum 1.6V operation or lower
• Operating temperature range: -40°C to 125°C minimum
• Surface-mount package compatibility: 14-pin SOIC or TSSOP footprint
• Product status: Active manufacturing
• Compliance: ROHS3 and REACH requirements

Secondary Performance Parameters:

• Input offset voltage: Maximum 15mV @ rated voltage
• Input bias current: Maximum 10pA
• Quiescent current: Maximum 1.2µA
• Propagation delay: Maximum 28ns to 14.6µs range
• Hysteresis: 4mV to 6.5mV range

Substitutes are grouped into two categories: direct equivalents (identical package and pinout) and functional alternatives (different package with compatible electrical performance).

Parameter Comparison

Engineering Selection Recommendations

MCP6544-E/SL (Direct Equivalent) This part is functionally identical to the MCP6544T-E/SL with matching electrical specifications and 14-SOIC package. The only difference is packaging format (Tube versus Tape & Reel). Selection is appropriate for applications requiring identical performance characteristics with alternative supply chain sourcing. Both parts maintain active product status and ROHS3 compliance.

MAX978ESE+ (Functional Alternative) This part offers superior performance in CMRR (95dB), PSRR (100dB), and propagation delay (28ns) compared to the MCP6544T-E/SL. However, it operates within a narrower supply voltage range (2.7V minimum versus 1.6V) and features a 16-SOIC package requiring PCB layout modification. Operating temperature range is limited to -40°C to 85°C. Selection is appropriate only when the 2.7V minimum supply voltage and 85°C maximum temperature are compatible with the application, and when superior noise rejection is required.

TLV3494AIPWT (Functional Alternative) This part provides CMOS, push-pull, rail-to-rail output in a 14-TSSOP package with supply voltage range of 1.8V to 5.5V. Input offset voltage is higher at 15mV maximum, and propagation delay is 14.6µs. MSL rating is 2 (1 Year) versus 1 (Unlimited) for the main part. Selection is appropriate when TSSOP package footprint is preferred and the higher input offset voltage is acceptable for the application.

TS884IDT (Functional Alternative) This part operates across the widest supply voltage range (1.1V to 5.5V) with the lowest quiescent current (500nA) and features a 14-SOIC package. Input offset voltage is 6mV, and propagation delay is 16µs. Selection is appropriate for ultra-low-power applications or systems requiring operation below 1.6V supply voltage.

All substitute parts maintain active product status, ROHS3 compliance, and REACH unaffected status, meeting standard regulatory requirements for industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can MCP6544-E/SL be used as a direct replacement for MCP6544T-E/SL? A: Yes. Both parts are manufactured by Microchip Technology with identical electrical specifications, operating temperature range (-40°C to 125°C), and 14-SOIC package. The difference is packaging format: MCP6544T-E/SL is supplied in Tape & Reel, while MCP6544-E/SL is supplied in Tube. No circuit modifications are required.

Q: What are the package compatibility considerations for MAX978ESE+? A: MAX978ESE+ uses a 16-SOIC package compared to the 14-SOIC of MCP6544T-E/SL. This requires PCB layout modification and cannot be used as a direct pin-for-pin replacement. Additionally, the minimum supply voltage is 2.7V, which may not be suitable for applications requiring 1.6V operation.

Q: Is TLV3494AIPWT compatible with 1.6V supply voltage applications? A: No. TLV3494AIPWT has a minimum supply voltage of 1.8V, making it unsuitable for applications requiring 1.6V operation. TS884IDT or MCP6544-E/SL are appropriate alternatives for 1.6V minimum supply voltage requirements.

Q: Which substitute part offers the lowest power consumption? A: TS884IDT provides the lowest quiescent current at 500nA maximum, compared to 1µA for MCP6544T-E/SL. This makes TS884IDT suitable for battery-powered or ultra-low-power applications.

Q: Can MAX978ESE+ be used in applications requiring operation above 85°C? A: No. MAX978ESE+ has a maximum operating temperature of 85°C, while MCP6544T-E/SL operates to 125°C. For high-temperature applications, MCP6544-E/SL, TLV3494AIPWT, or TS884IDT are appropriate alternatives.

Q: What is the significance of MSL rating differences between substitute parts? A: MSL (Moisture Sensitivity Level) 1 (Unlimited) indicates the part can be stored indefinitely without moisture bake-out requirements. MSL 2 (1 Year) requires moisture bake-out if the part has been exposed to ambient humidity for more than one year. MCP6544T-E/SL, MCP6544-E/SL, MAX978ESE+, and TS884IDT all have MSL 1 rating. TLV3494AIPWT has MSL 2 rating, requiring additional handling considerations for long-term storage.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts (MCP6544-E/SL, MAX978ESE+, TLV3494AIPWT, and TS884IDT) are ROHS3 compliant and REACH unaffected, meeting standard regulatory requirements for industrial and commercial applications.

Q: Which substitute part has the fastest propagation delay? A: MAX978ESE+ has the fastest propagation delay at 28ns maximum, compared to 8µs for MCP6544T-E/SL. However, MAX978ESE+ requires a minimum 2.7V supply voltage and operates only to 85°C maximum temperature.