MCP6549T-E/SL Equivalent & Substitute Parts

Part Overview

The MCP6549T-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 with open-drain, rail-to-rail, and TTL-compatible output characteristics. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained within the specified parameter tolerances for this comparator category.

Substiute Parts

MCP6549T-E/SL

Microchip TechnologyIn Stock: 947MCP6549T-E/SL Datasheet

Current PartRFQ

MCP6549-E/SL

Microchip TechnologyIn Stock: 3147MCP6549-E/SL Datasheet

DirectRFQ

TLV3404IDR

Texas InstrumentsIn Stock: 13315TLV3404IDR Datasheet

MFR RecommendedRFQ

TS884IDT

STMicroelectronicsIn Stock: 2610TS884IDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MCP6549T-E/SL are qualified based on the following criteria:

Packaging Compatibility: All substitute parts maintain the 14-SOIC surface-mount package format with identical 0.154" (3.90mm) width, ensuring direct PCB footprint compatibility.

Functional Equivalence: Substitute parts contain four independent comparator elements with general-purpose application capability and identical operating temperature range (-40°C to 125°C).

Electrical Performance: Substitute parts operate within overlapping supply voltage ranges and maintain comparable input offset voltage, input bias current, output current capability, and propagation delay characteristics suitable for general-purpose comparator applications.

Compliance & Status: All substitute parts maintain active production status, ROHS3 compliance, and unlimited moisture sensitivity rating (MSL 1), ensuring long-term availability and regulatory alignment.

Parameter Comparison

Engineering Selection Recommendations

MCP6549-E/SL (Microchip Technology): This part is an identical functional equivalent to the MCP6549T-E/SL, differing only in packaging format (Tube versus Tape & Reel). Both parts share identical electrical specifications, supply voltage range, and performance characteristics. Selection between these two variants depends on procurement and assembly requirements rather than technical performance.

TLV3404IDR (Texas Instruments): This substitute operates across an extended supply voltage range (2.7V to 16V single supply, ±1.35V to ±8V dual supply) and demonstrates superior CMRR and PSRR performance (88dB and 105dB respectively). However, propagation delay is significantly longer at 300µs maximum compared to 8µs for the MCP6549T-E/SL. Input bias current is higher at 250pA. This part is suitable for applications where extended voltage range and improved noise rejection are required, provided timing-critical functions can tolerate the increased propagation delay.

TS884IDT (STMicroelectronics): This substitute features a push-pull output configuration rather than open-drain, operates across a supply range of 1.1V to 5.5V, and demonstrates lower quiescent current (500nA). Propagation delay is 16µs, approximately double that of the MCP6549T-E/SL. The push-pull output topology represents a functional difference that may require circuit redesign in applications dependent on open-drain characteristics. This part is applicable where push-pull output behavior is compatible with the system design.

All substitute parts maintain ROHS3 compliance, active production status, and unlimited moisture sensitivity rating, ensuring regulatory and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can MCP6549-E/SL be used as a direct replacement for MCP6549T-E/SL?

A: Yes. Both parts are manufactured by Microchip Technology and share identical electrical specifications, supply voltage range (1.6V to 5.5V), and performance parameters. The only difference is packaging format: MCP6549T-E/SL is supplied in Tape & Reel format, while MCP6549-E/SL is supplied in Tube format. PCB footprint and electrical performance are identical.

Q: What are the key differences between MCP6549T-E/SL and TLV3404IDR?

A: The TLV3404IDR operates across a wider supply voltage range (2.7V to 16V) and provides superior CMRR and PSRR performance. However, propagation delay is significantly longer at 300µs maximum versus 8µs for the MCP6549T-E/SL. Input bias current is also higher at 250pA. Selection depends on whether the application requires extended voltage range and improved noise rejection, with tolerance for increased propagation delay.

Q: Why does TS884IDT have a different output type (push-pull versus open-drain)?

A: Output topology is a fundamental design characteristic. The TS884IDT uses push-pull output configuration, while the MCP6549T-E/SL uses open-drain output. These configurations have different electrical behavior and may require circuit modifications. Push-pull outputs actively drive both high and low states, whereas open-drain outputs only pull low, requiring external pull-up resistors. Verify circuit compatibility before substitution.

Q: Are all substitute parts available in the same 14-SOIC package?

A: Yes. All substitute parts are packaged in 14-SOIC format with identical 0.154" (3.90mm) width, ensuring direct PCB footprint compatibility. Mounting type is surface mount for all variants.

Q: Do all parts meet the same compliance standards?

A: Yes. The MCP6549T-E/SL and all substitute parts (MCP6549-E/SL, TLV3404IDR, TS884IDT) are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1) and active production status, ensuring regulatory alignment and long-term supply availability.

Q: Which substitute part has the fastest propagation delay?

A: The MCP6549T-E/SL and MCP6549-E/SL both have the fastest propagation delay at 8µs maximum. The TS884IDT has 16µs, and the TLV3404IDR has 300µs. For timing-critical applications, the MCP6549 variants are preferred.