MCP6548-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP6548-I/SN is a single-channel, open-drain analog comparator operating from 1.6 V to 5.5 V supply with a chip-select input and 7 mV maximum input offset voltage in an SOIC-8 package. Suited for low-power threshold detection. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP6548-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3571(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 MCP6548-I/SN?
- Single comparator with open-drain output and hardware chip-select input enabling direct connection to SPI or GPIO-controlled enable lines without external logic
- Ultra-low 0.0001 µA input bias current and 1.6 V minimum supply voltage for nano-power threshold detection in energy-harvesting and coin-cell applications
- 7 mV maximum input offset voltage ensures predictable switching thresholds without calibration in voltage monitoring and window detection circuits
- Open-drain output is directly wire-OR-able with other comparators or logic signals for fault-detect bus aggregation without additional discrete components
- SOIC-8 package with -40°C to +85°C industrial temperature rating and RoHS-compliant, Pb-free construction for standard automated assembly
What is MCP6548-I/SN used for?
The MCP6548-I/SN is used in battery-level detection, over-temperature warning circuits, and power-good monitoring where a low-power open-drain comparator with chip-select must assert a fault flag to a microcontroller GPIO with minimal quiescent draw. Its 1.6 V minimum supply supports direct operation from a single alkaline or Li-ion cell in portable devices such as handheld instruments and IoT sensor nodes. The chip-select input also makes it useful in multi-comparator threshold monitoring systems where several MCP6548 devices share a common open-drain fault bus and are individually enabled by MCU I/O lines.
What are the specifications of MCP6548-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 MCP6548-I/SN datasheet?
MCP6548-I/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP6548-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 MCP6548-I/SN and does it operate from a single Li-ion cell?
The MCP6548-I/SN operates from a minimum supply voltage of 1.6 V up to 5.5 V, covering the full discharge range of a single Li-ion cell (nominally 2.5 V to 4.2 V). It continues to function correctly at the end of battery life when the cell voltage drops below 2.0 V, making it reliable for battery-level detection circuits that must trigger a low-battery alert before the system shuts down at around 2.5 V.
How does the chip-select input of the MCP6548-I/SN work in a multi-comparator fault detection system?
The chip-select (CS) pin enables or disables the comparator output independently of the input voltages. When CS is driven low by an MCU GPIO, the open-drain output is active and can pull the fault bus low if the threshold condition is met. When CS is high, the output is disabled (high-impedance), effectively disconnecting that comparator from the shared open-drain wire-OR bus. This allows a system with 4 or 8 MCP6548 devices on a single fault line to poll each comparator individually without reading false faults from unselected channels.
What is the input offset voltage of the MCP6548-I/SN and how does it affect threshold accuracy?
The maximum input offset voltage is 7 mV (7000 µV), which means the actual switching threshold can deviate up to ±7 mV from the intended reference voltage. For a 3.3 V system monitoring a power-good threshold set at 3.0 V, the worst-case trigger point shifts by ±0.23% of supply. This level of offset is acceptable for most voltage monitoring applications and eliminates the need for external calibration or trimming resistors in threshold detection circuits.
Can the open-drain output of the MCP6548-I/SN directly drive a logic-level signal to a 3.3 V MCU?
Yes. The open-drain output requires an external pull-up resistor to the desired logic supply, typically 3.3 V or 5 V, with a resistor value between 1 kOhm and 100 kOhm depending on the required response speed. A 10 kOhm pull-up to 3.3 V gives a time constant under 1 µs for typical PCB parasitic capacitance below 100 pF, providing fast enough response for battery monitoring and power sequencing applications. The output voltage low level is typically below 0.4 V at 4 mA sink current, compatible with standard CMOS logic thresholds.
How does the MCP6548-I/SN compare to a standard comparator without a chip-select for building a window detector?
A conventional comparator requires 2 devices and 2 open-drain outputs wire-ORed through discrete components to implement a window detector flagging both over-voltage and under-voltage conditions. With the MCP6548's chip-select, both upper and lower threshold comparators can share a single fault wire and be polled sequentially by toggling 2 MCU GPIO lines, replacing a small-signal MOSFET or diode OR circuit. The 1.6 V to 5.5 V range, 0.0001 µA bias current, and SOIC-8 package keep the BOM compact for industrial sensor nodes monitoring supply rails from 1.8 V to 5 V.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.5300 | $0.53 |
| 25+ | $0.4209 | $10.52 |
| 100+ | $0.3893 | $38.93 |
| 7500+ | $0.3662 | $2746.50 |
| 10000+ | $0.3580 | $3580.00 |
| 15000+ | $0.3571 | $5356.50 |
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