MCP6549-I/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP6549-I/ST is a quad rail-to-rail input/output comparator with open-drain outputs, operating up to 9 V supply and featuring 100 pA maximum input bias current, housed in a 14-pin TSSOP package. Four independent comparator channels share a single package, saving board space and BOM cost. Available from stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MCP6549-I/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.9176(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP6549-I/ST?
- Quad open-drain comparator outputs supporting wired-OR logic and direct interfacing to 3.3 V and 5 V logic levels from a single 9 V supply rail
- Rail-to-rail input range allowing detection of signals that span the full supply voltage from ground to VDD, maximizing dynamic range in low-voltage systems
- 100 pA maximum input bias current enabling use with high-impedance resistive divider threshold networks without threshold shift errors
What is MCP6549-I/ST used for?
The MCP6549-I/ST is designed for multi-channel threshold detection, window comparator circuits, and battery monitoring systems that require four independent comparator channels in a compact 14-pin TSSOP footprint. Its rail-to-rail input range and open-drain outputs make it suitable for level translation between mixed 3.3 V and 5 V logic domains and for driving indicator LEDs or optocouplers directly. Industrial overcurrent protection circuits, motor drive fault detection, and HVAC control panels commonly use this device to consolidate multiple voltage threshold comparisons into a single low-cost IC.
What are the specifications of MCP6549-I/ST?
| Pbfree Code | Yes |
| Manufacturer Package Code | TSSOP-14 |
| Factory Lead Time | 9Weeks |
| YTEOL | 8 |
| Amplifier Type | COMPARATOR |
| Average Bias Current-Max (IIB) | 0.0001 µA |
| Input Offset Voltage-Max | 7000 µV |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e3 |
| Number of Functions | 4 |
| Output Type | OPEN-DRAIN |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Response Time-Nom | 3000ns |
| Screening Level | TS 16949 |
| Supply Current-Max | 0.004mA |
| Supply Voltage Limit-Max | 7V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
| Country of Origin | Malaysia, Thailand |
Where can I find the MCP6549-I/ST datasheet?
MCP6549-I/ST Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP6549-I/ST?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many comparator channels does MCP6549-I/ST integrate, and what topology do its outputs use for multi-channel fault detection?
The MCP6549-I/ST integrates 4 independent comparator channels in a single 14-pin TSSOP package. Each channel has an open-drain output, which allows multiple comparator outputs to be wire-OR connected to a single pull-up resistor for fault-bus implementations. This topology is standard in battery management systems and motor drives where any of several fault conditions must assert a common fault line.
What maximum supply voltage does MCP6549-I/ST support, and how does this compare to lower-voltage quad comparators for industrial designs?
The MCP6549-I/ST supports supply voltages up to 9 V, covering 5 V, 6 V, and 7.5 V industrial rails with margin to spare. Many general-purpose quad comparators such as LM339 are rated to 36 V but lack rail-to-rail inputs, while MCP6549 adds RRIO capability within its 9 V maximum, making it optimal for 3.3 V and 5 V mixed-signal systems rather than high-voltage industrial buses.
What is the input offset voltage of MCP6549-I/ST, and for which precision threshold detection tasks is it appropriate?
The MCP6549-I/ST specifies a maximum input offset voltage of 7 mV (7000 µV). This level of precision is acceptable for battery undervoltage detection, window comparator circuits with thresholds spaced more than 50 mV apart, and overcurrent sense resistor monitoring where threshold accuracy requirements are in the tens of millivolts range rather than sub-millivolt precision applications.
For a compact motor-drive PCB, how does placing all 4 comparator channels of MCP6549-I/ST in one TSSOP-14 package reduce component count versus discrete solutions?
Using MCP6549-I/ST consolidates 4 separate comparator channels into a 14-pin TSSOP footprint of approximately 5 mm x 4.4 mm, compared to four individual SOT-23 single comparators that would collectively occupy over 4x the board area. The shared package also reduces the number of decoupling capacitors from 4 to 1 and eliminates 3 additional power routing traces, directly simplifying PCB layout and cutting BOM line items in motor-drive fault protection circuits.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.3100 | $1.31 |
| 5+ | $1.2833 | $6.42 |
| 25+ | $1.0889 | $27.22 |
| 100+ | $0.9900 | $99.00 |
| 5000+ | $0.9800 | $4900.00 |
| 100000+ | $0.9176 | $91760.00 |
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