MCP6546-E/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
MCP6546-E/SN is a single rail-to-rail input/output comparator with open-drain output, 9 V maximum supply, 1.6 V minimum supply, and 7 mV max offset. Available in SOIC-8 package with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP6546-E/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3210(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP6546-E/SN?
- Rail-to-rail input and output (RRIO) enabling full supply-range signal comparison from 1.6 V to 9 V
- Open-drain output compatible with multiple logic levels for flexible system interfacing
- Ultra-low bias current of 0.005 µA minimizing loading on high-impedance sensor sources
- Wide supply voltage range of 1.6 V to 9 V supporting battery and 5 V logic systems
- SOIC-8 package with industry-standard footprint for straightforward PCB assembly and sourcing
What is MCP6546-E/SN used for?
MCP6546-E/SN is commonly used in battery voltage monitoring circuits, window comparator threshold detection, and zero-crossing detectors in power supply control loops where a 1.6 V to 9 V supply range provides design flexibility. Its open-drain output with rail-to-rail input simplifies interfacing to microcontroller GPIO pins and mixed-voltage logic buses in IoT sensor nodes and portable instruments. The device also suits overvoltage and undervoltage lockout circuits, analog switch control, and level-translation applications in industrial and consumer electronics.
What are the specifications of MCP6546-E/SN?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 5Weeks |
| YTEOL | 8 |
| Amplifier Type | COMPARATOR |
| Average Bias Current-Max (IIB) | 0.005 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 |
| 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 | AUTOMOTIVE |
| 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-E/SN datasheet?
MCP6546-E/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP6546-E/SN?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input offset voltage specification of MCP6546-E/SN, and how does it impact threshold accuracy?
MCP6546-E/SN has a maximum input offset voltage of 7000 µV (7 mV). In a battery undervoltage lockout circuit with a 3.0 V trip threshold, this offset can shift the actual trip point by up to ±7 mV, requiring designers to include a small hysteresis band of at least 20 mV to prevent output chatter near the threshold in noisy supply environments.
How does the open-drain output of MCP6546-E/SN enable interfacing to 3.3 V and 5 V logic systems simultaneously?
MCP6546-E/SN's open-drain output sinks current when the comparator trips but does not actively drive high, allowing an external pull-up resistor to set the output logic level independently of the comparator supply. Connecting a 10 kΩ pull-up to a 3.3 V rail gives a 3.3 V logic-high output, while a 5 V pull-up gives 5 V compatibility, all from a single comparator operating at 1.6 V to 9 V, without additional level-translation ICs.
What supply voltage range does MCP6546-E/SN support, and which battery chemistries does this cover?
MCP6546-E/SN operates from a single supply voltage of 1.6 V to 9 V. This range covers a discharged single-cell Li-Ion battery at 3.0 V through a fully charged 2-cell alkaline pack at 3.2 V, as well as 5 V regulated logic supplies and 9 V PP3 batteries, making the comparator usable across a wide range of portable, industrial, and mixed-supply designs without a separate regulator.
In a zero-crossing detector for a 50 Hz AC signal, what propagation delay should be budgeted for MCP6546-E/SN?
MCP6546-E/SN has a typical propagation delay of approximately 1.5 µs under standard operating conditions. For a 50 Hz sinusoidal signal, the zero-crossing event occurs twice per cycle, meaning the comparator output transitions 100 times per second. A 1.5 µs delay corresponds to a phase error of only 0.027° at 50 Hz, making MCP6546-E/SN well-suited for zero-crossing detection in motor speed control, lamp dimmers, and power measurement circuits.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.4700 | $0.47 |
| 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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