MCP6546-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The MCP6546-I/SN is a single open-drain comparator from Microchip, operating from 1.6 V to 5.5 V with a 100 pA bias current in an 8-pin SOIC package. Available in stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP6546-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3210(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 MCP6546-I/SN?
- Ultra-low bias current of 100 pA max enabling accurate comparisons across high-impedance signal sources
- Open-drain output compatible with any logic level from 1.6 V to 5.5 V for flexible system integration
- Wide supply range from 1.6 V to 5.5 V supporting both 1.8 V IoT nodes and 5 V industrial systems
- 8-pin SOIC package with RoHS-compliant Pb-free construction for modern manufacturing environments
What is MCP6546-I/SN used for?
The MCP6546-I/SN is ideal for battery-level detection, window comparator circuits, and threshold-crossing alarms in portable equipment that must operate reliably from supplies as low as 1.6 V. Its open-drain output simplifies wire-OR bus configurations where multiple comparators share a single interrupt line on a microcontroller GPIO. Industrial sensors, HVAC controllers, and white-goods appliances use this device to detect temperature or pressure thresholds while minimizing quiescent current draw.
What are the specifications of MCP6546-I/SN?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 5Weeks |
| YTEOL | 8 |
| Amplifier Type | COMPARATOR |
| Average Bias Current-Max (IIB) | 0.0001 µA |
| Input Offset Voltage-Max | 7000 µV |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Type | OPEN-DRAIN |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| 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 | 1.27mm |
| Terminal Position | DUAL |
| 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 | Thailand |
Where can I find the MCP6546-I/SN datasheet?
MCP6546-I/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP6546-I/SN?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the minimum supply voltage for the MCP6546-I/SN, and which battery chemistries does this enable?
The MCP6546-I/SN operates from as low as 1.6 V, making it compatible with a single alkaline cell (1.5 V nominal, dropping to 1.0 V at end of life is outside spec), a single NiMH cell at 1.2 V (marginally low), or two-cell coin-cell stacks at 3 V to 3.6 V. Most designers use it in 1.8 V and 3.3 V lithium-ion systems where it stays well within its 1.6 V to 5.5 V rated range.
How does the open-drain output of the MCP6546-I/SN differ from a push-pull output, and when does this matter?
An open-drain output can only pull the output line low; it relies on an external pull-up resistor (typically 10 kΩ to 100 kΩ) to pull high. This allows the output to interface with logic supplies different from the comparator supply, enables wire-OR connection of multiple comparators to a single interrupt pin, and provides inherent short-circuit protection without shoot-through current.
With an input offset voltage of 7 mV max, how precise is the MCP6546-I/SN for threshold detection near a 1.2 V reference?
A 7 mV maximum input offset voltage introduces a switching threshold uncertainty of ±7 mV around the nominal set point. For a 1.2 V reference this represents ±0.58% threshold error, acceptable for battery-undervoltage detection and level-crossing alarms but insufficient for precision 0.1% measurement applications where a lower-offset comparator would be required.
Can multiple MCP6546-I/SN devices share a single interrupt line in an embedded system, and what is the recommended pull-up value?
Yes, since the MCP6546-I/SN has an open-drain output, multiple devices can connect their outputs directly to a single pull-up resistor and a shared MCU GPIO interrupt pin in a wire-OR topology. A 10 kΩ pull-up to the logic supply is a standard starting point, yielding a rise time determined by the total node capacitance; for capacitances under 100 pF the line rises in under 1 µs.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.4700 | $0.47 |
| 4+ | $0.3674 | $1.47 |
| 100+ | $0.3600 | $36.00 |
| 5000+ | $0.3500 | $1750.00 |
| 7500+ | $0.3283 | $2462.25 |
| 10000+ | $0.3210 | $3210.00 |
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