MCP6546T-I/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
The MCP6546T-I/OT is a single-channel open-drain output voltage comparator from Microchip operating on 1.6 V to 5.5 V supply with 50 ms propagation delay and 100 pA maximum bias current. It is housed in a compact SOT-23-5 package for space-constrained designs. Available in stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MCP6546T-I/OT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1350(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Wide supply range of 1.6 V to 5.5 V supports both 1.8 V and 5 V logic families, enabling flexible threshold detection in mixed-voltage embedded systems
- Open-drain output allows wired-OR connection with multiple comparators and direct level shifting to higher-voltage logic rails via an external pull-up resistor
- Ultra-low 100 pA maximum input bias current minimizes loading on high-impedance sensor outputs such as resistive dividers or electrochemical cells
Applications
The MCP6546T-I/OT is used in battery-powered IoT devices and portable instruments for voltage threshold detection, power supply monitoring, and window comparator circuits where low supply current and wide voltage range are required. Its open-drain output simplifies wired-OR logic in multi-comparator fault detection systems and directly drives interrupt pins on microcontrollers without voltage level translation. The SOT-23-5 footprint conserves PCB space in compact designs such as wearables and sensor nodes.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-5 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Amplifier Type | COMPARATOR |
| Average Bias Current-Max (IIB) | 0.0001 µA |
| Input Offset Voltage-Max | 7000 µV |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Type | OPEN-DRAIN |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Response Time-Nom | 3000ns |
| Screening Level | TS 16949 |
| Supply Current-Max | 0.001mA |
| 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 | 0.95mm |
| Terminal Position | DUAL |
| Package | SOT23 (5-Pin) |
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 | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the supply voltage range of the MCP6546T-I/OT and which logic voltage families does it support?
The MCP6546T-I/OT operates from 1.6 V to 5.5 V, covering 1.8 V, 2.5 V, 3.3 V, and 5 V logic families. This wide range allows the comparator to serve as a threshold detector in both low-voltage IoT microcontroller systems and legacy 5 V industrial control boards without requiring supply voltage adjustment or external level shifters.
Why does the MCP6546T-I/OT use an open-drain output, and how should the pull-up resistor be sized?
The open-drain output allows the MCP6546T-I/OT to pull its output low on a trip condition while an external pull-up resistor sets the logic-high level to any desired voltage up to the pull-up rail. A typical pull-up resistor of 10 kΩ to 100 kΩ limits quiescent current while ensuring rise times compatible with most microcontroller interrupt inputs. Wired-OR connection of multiple comparators is also possible with a single shared pull-up resistor.
How does the MCP6546T-I/OT compare to a standard op-amp used as a comparator for low-voltage threshold detection?
Unlike a general-purpose op-amp such as LM358, the MCP6546T-I/OT is optimized as a dedicated comparator with a 50 ms propagation delay specification and an open-drain output that directly interfaces with digital logic. It also operates down to 1.6 V supply versus most op-amps that require at least 3 V, and its 100 pA bias current versus typical op-amp bias of 20 nA to 100 nA reduces measurement error on high-impedance divider threshold networks.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.0000 | $2.00 |
| 4+ | $1.6000 | $6.40 |
| 14+ | $1.2000 | $16.80 |
| 25+ | $0.3300 | $8.25 |
| 100+ | $0.3000 | $30.00 |
| 250+ | $0.1350 | $33.75 |
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