MCP6546-I/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
MCP6546-I/MS is a single-channel open-drain comparator from Microchip Technology, operating from a 1.6 V minimum supply with ultra-low 0.1 nA input bias current. It features a 7 mV maximum offset voltage and is housed in an 8-pin MSOP package. From $0.60, in stock, worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP6546-I/MS 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
Key Features
- Ultra-low input bias current of 0.1 nA enables accurate threshold comparison with high-impedance sensor sources such as photodiodes and resistive dividers without loading the signal
- 1.6 V minimum supply voltage supports single-cell and low-voltage battery-powered designs where rail-to-rail input comparison at sub-2 V supplies is required
- Open-drain output allows flexible logic level shifting and wired-OR bus configurations with pull-up resistors to any supply voltage above the comparator rail
Applications
MCP6546-I/MS is used in battery-powered portable devices for low-voltage threshold detection, wake-up comparators, and window comparator circuits where sub-2 V supply operation is essential. Its ultra-low 0.1 nA input bias current makes it ideal for high-impedance sensor interfaces in medical and industrial monitoring equipment. The 8-pin MSOP package fits tightly in mixed-signal board areas alongside ADCs and microcontrollers.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-8 |
| Reach Compliance Code | Compliant |
| Factory Lead Time | 11Weeks |
| YTEOL | 8 |
| Amplifier Type | COMPARATOR |
| Average Bias Current-Max (IIB) | 0.0001 µA |
| Input Offset Voltage-Max | 7000 µV |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Type | OPEN-DRAIN |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.19 |
| Package Shape | SQUARE |
| 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 | 0.001mA |
| 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 | 0.65mm |
| 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 | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the minimum supply voltage for MCP6546-I/MS, and why does that benefit battery-powered designs?
MCP6546-I/MS operates from a minimum supply voltage of 1.6 V, which is below the end-of-life voltage of most single-cell alkaline and lithium batteries. This allows threshold detection to continue functioning as battery voltage declines from 3.3 V down toward 1.6 V, extending the useful window for low-battery alerts in portable medical, IoT, and wearable devices without requiring a boost converter.
How does the 0.1 nA input bias current of MCP6546-I/MS affect high-impedance sensor interfacing?
With a maximum input bias current of 0.0001 µA (0.1 nA), MCP6546-I/MS introduces negligible loading on high-impedance sources such as photodiodes, thermistors, and resistive voltage dividers in the megaohm range. This means a 10 MΩ source impedance produces less than 1 mV of error from bias current, maintaining accuracy in sensitive analog comparator circuits without buffering the source signal.
What output structure does MCP6546-I/MS use, and how does an open-drain output enable multi-voltage logic systems?
MCP6546-I/MS uses an open-drain output stage, meaning the output pin only pulls low actively and floats high. By connecting an external pull-up resistor to any supply voltage — for example 3.3 V or 5 V — the output logic level can be shifted independently from the comparator's own 1.6 V to 5.5 V supply rail, enabling direct interfacing to 3.3 V MCU GPIO or 5 V CMOS logic without additional level-translation ICs.
For a compact IoT sensor node, what package and footprint does MCP6546-I/MS offer?
MCP6546-I/MS is housed in an 8-pin MSOP package, which has a body width of approximately 3 mm and 0.65 mm pin pitch. This small footprint allows the comparator to be placed close to sensor signal conditioning circuitry on dense IoT PCBs, and the 8 pins provide both input, output, supply, and optional hysteresis connections within a standard surface-mount footprint.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.4370 | $0.44 |
| 25+ | $0.3900 | $9.75 |
| 100+ | $0.3600 | $36.00 |
| 5000+ | $0.3500 | $1750.00 |
| 7500+ | $0.3283 | $2462.25 |
| 10000+ | $0.3210 | $3210.00 |
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