MCP6542-I/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP6542-I/MS is a dual push-pull output rail-to-rail I/O comparator operating from 1.6 V with 100 fA maximum bias current and 7 mV maximum input offset voltage. Both channels share an MSOP-8 package, enabling space-efficient threshold detection in battery-powered systems. Available in stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP6542-I/MS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4146(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
- Dual push-pull rail-to-rail output comparators in MSOP-8 operate from 1.6 V, enabling direct GPIO-level detection in single-cell battery systems without external pull-up resistors
- 100 fA maximum input bias current allows comparison of signals from high-impedance sources such as capacitive sensors and pH electrodes without threshold shift errors
- 7 mV maximum input offset voltage over temperature ensures repeatable switching thresholds in overcurrent detection and window comparator circuits across -40°C to 125°C industrial range
Applications
The MCP6542-I/MS dual comparator is used in battery-management threshold detection, overcurrent protection circuits, and window comparator designs where push-pull outputs directly drive logic inputs at 1.8 V, 3.3 V, or 5 V without open-drain pull-ups. Its 100 fA bias current makes it suitable for capacitive level detection, MEMS sensor threshold monitoring, and electrochemical sensor alarm circuits where the input source impedance exceeds 10 MOhm. The dual-channel MSOP-8 package is also used in portable equipment for independent high and low threshold comparisons in power-good or undervoltage lockout detection circuits.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-8 |
| 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 | 2 |
| Output Type | PUSH-PULL |
| 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 | 4000ns |
| Supply Current-Max | 0.002mA |
| 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
Compatible alternatives and drop-in replacements for MCP6542-I/MS:
Comparator, 2 Func, 7000uV Offset-Max, 4000ns Response Time, CMOS, PDSO8
Frequently Asked Questions
What is the minimum supply voltage of MCP6542-I/MS and does it support 1.8 V logic-level systems directly?
The MCP6542-I/MS operates from 1.6 V minimum single supply. Its push-pull rail-to-rail outputs swing to within millivolts of either supply rail, so at a 1.8 V supply the output high level reaches approximately 1.79 V and the output low level falls below 10 mV, making it directly compatible with 1.8 V CMOS logic inputs without level-shift buffers.
How does the push-pull output of MCP6542-I/MS differ from open-drain comparator outputs in practical circuit design?
Push-pull outputs actively drive both logic high and logic low states, eliminating the need for external pull-up resistors required by open-drain comparators such as LM393. This reduces component count by 2 resistors per channel, speeds up rising-edge transitions at the output node, and simplifies layout by removing the pull-up resistor footprints on space-constrained PCBs operating from 1.6 V to 5.5 V.
What maximum input offset voltage does MCP6542-I/MS specify and how does it affect threshold accuracy in overcurrent detection?
The maximum input offset voltage is 7 mV (7000 µV). In an overcurrent detection circuit with a 50 mOhm shunt resistor detecting a 1 A threshold (50 mV signal), a 7 mV offset introduces a 14% threshold error. To compensate, the reference voltage should include a 7 mV margin or a lower-offset comparator should be selected for applications requiring better than 5% threshold accuracy.
For a two-channel window comparator design, how does the MCP6542-I/MS dual package help reduce BOM cost versus two single comparators?
Using both channels in one MSOP-8 package instead of two individual SOT-23-5 single comparators reduces the package count by 1, saves approximately 3 mm x 3 mm of PCB area, and cuts component procurement to a single line item. At a typical unit price, dual-package comparators are generally 30% to 50% lower cost than purchasing two separate single-channel devices for the same window comparator function.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.6200 | $0.62 |
| 25+ | $0.5200 | $13.00 |
| 100+ | $0.4700 | $47.00 |
| 7500+ | $0.4198 | $3148.50 |
| 10000+ | $0.4187 | $4187.00 |
| 15000+ | $0.4146 | $6219.00 |
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