MCP6543-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The MCP6543-I/SN is a single-channel analog comparator operating from as low as 1.6 V supply with push-pull output, chip select, and a maximum input bias current of 0.1 nA in an 8-pin SOIC package. It features a maximum input offset voltage of 7000 µV and integrates a chip-select pin for output enable control. Available from stock with Pb-free RoHS-compliant construction and worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP6543-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3580(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 MCP6543-I/SN?
- Single analog comparator with push-pull output and integrated chip-select (CS) pin, operating from a 1.6 V minimum supply for low-voltage battery applications
- Ultra-low maximum input bias current of 0.1 nA (100 pA) minimizes loading on high-impedance threshold detection networks
- Compact 8-pin SOIC-8 Pb-free package with 7000 µV max input offset voltage, suitable for window comparator and threshold detection circuits
What is MCP6543-I/SN used for?
The MCP6543-I/SN is used in threshold detection and signal comparison circuits for battery management systems, over-voltage or under-voltage protection, and zero-crossing detectors where 1.6 V operation enables direct integration with low-voltage battery-powered designs. Its push-pull output with chip-select pin simplifies interfacing to microcontrollers by allowing the comparator output to be tri-stated when not needed, reducing bus contention in multiplexed analog monitoring systems. The SOIC-8 package and low 0.1 nA input bias current make it well suited for portable instrumentation and IoT sensor nodes.
What are the specifications of MCP6543-I/SN?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| 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 | PUSH-PULL |
| 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 | 4000ns |
| 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 MCP6543-I/SN datasheet?
MCP6543-I/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP6543-I/SN?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the minimum supply voltage of the MCP6543-I/SN and how does it benefit battery-powered designs?
The MCP6543-I/SN operates from a minimum supply voltage of 1.6 V, allowing it to function from a single alkaline cell or lithium coin cell throughout most of its discharge curve. This 1.6 V minimum operation extends battery life in portable devices without requiring a boost converter.
How does the chip-select pin on the MCP6543-I/SN simplify integration with microcontrollers in a multi-comparator monitoring system?
The integrated chip-select (CS) pin on the MCP6543-I/SN tri-states the push-pull output when de-asserted, allowing multiple comparators to share a common output line without bus contention. This reduces GPIO usage on the host MCU and simplifies wiring in systems monitoring multiple thresholds simultaneously.
What maximum input offset voltage does the MCP6543-I/SN have, and what does that imply for threshold accuracy?
The MCP6543-I/SN has a maximum input offset voltage of 7000 µV (7 mV), which sets the worst-case threshold accuracy; at a 1.6 V reference, this represents about 0.4% error. For applications requiring tighter thresholds below ±5 mV, a precision comparator with lower offset voltage should be considered instead.
For an over-voltage protection circuit at 3.3 V, why would the MCP6543-I/SN be selected over a general-purpose op-amp used as a comparator?
The MCP6543-I/SN is purpose-built as a comparator with a push-pull output, 0.1 nA input bias current, and 1.6 V to 5.5 V supply range, providing faster switching and a rail-to-rail output suitable for direct MCU interfacing. General-purpose op-amps used as comparators typically lack output stage speed and may exhibit phase reversal, making them less reliable in over-voltage protection circuits.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.5300 | $0.53 |
| 25+ | $0.4400 | $11.00 |
| 100+ | $0.4000 | $40.00 |
| 5000+ | $0.3900 | $1950.00 |
| 7500+ | $0.3662 | $2746.50 |
| 10000+ | $0.3580 | $3580.00 |
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