MCP111T-300E/TT Microchip Integrated Circuit (SOT23 (3-Pin)) In Stock
Microchip MCP111T-300E/TT is a fixed-threshold voltage detector with a 2.93 V trip point and active-low open-drain reset output in a 3-pin SOT-23 package. Monitors supply voltage for microcontroller reset generation in battery-powered and embedded systems. Available from stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP111T-300E/TT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1938(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 2.93 V threshold provides accurate supply voltage monitoring without external resistor divider, reducing BOM and component count
- Active-low open-drain reset output drives processor reset pins directly in 3.3 V embedded systems with a single 3-pin SOT-23 package
- Operating range down to 1 V and wide temperature tolerance suit portable and industrial battery-powered reset supervision applications
Applications
MCP111T-300E/TT is used as a power-on reset and brown-out detection circuit in microcontroller-based designs where the supply voltage must be monitored before allowing code execution. Its 2.93 V trip point suits 3.3 V supply rails in IoT sensors, wearable devices, and industrial controllers. The 3-pin SOT-23 package minimizes board space consumption, making it practical for compact portable electronics where dedicated reset supervisor ICs replace software brown-out detection.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-3 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| Additional Feature | MNL RST:N;PW FL IO:N;PRG RST DLY:N;WD:N;WDO:N;WWD:N |
| Adjustable Threshold | NO |
| Analog IC - Other Type | VOLTAGE DETECTOR |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TO-236 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Supply Current-Max (Isup) | 0.00175mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1V |
| Supply Voltage-Nom (Vsup) | 3V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.96mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +2.93V |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
At what threshold voltage does MCP111T-300E/TT assert its reset output, and how precise is this threshold?
MCP111T-300E/TT asserts its active-low reset output when the supply voltage falls below 2.93 V (nominal), which corresponds to the -300 suffix in the part number indicating a 3.00 V threshold family. Microchip specifies tight trip point accuracy of ±1.5% over temperature, ensuring the reset fires reliably before the supply drops below the 2.7 V minimum operating voltage of most 3.3 V microcontrollers. This eliminates the need for external resistor dividers used in soft comparator reset circuits.
How does the open-drain output of MCP111T-300E/TT interface with a microcontroller's active-low reset pin?
The open-drain active-low output of MCP111T-300E/TT connects directly to a microcontroller's MCLR or NRST pin with a pull-up resistor of typically 10 kΩ to the supply. When VCC falls below the 2.93 V trip point, the output pulls the reset line low, holding the MCU in reset until the supply recovers above the threshold plus any built-in hysteresis. This 3-pin SOT-23 circuit requires no additional components beyond the pull-up resistor, saving board space compared to RC-based or discrete comparator reset solutions.
How does MCP111T-300E/TT compare with MCP102T for a 3.3 V supervisory circuit in a portable design?
MCP102T is the 2.93 V variant from Microchip's push-pull output voltage supervisor family, while MCP111T-300E/TT uses an open-drain output that tolerates different logic-level pull-up voltages. For a standard single-supply 3.3 V design with an MCU that has a built-in pull-up on its reset pin, both parts work at the same 2.93 V trip point in the 3-pin SOT-23 package. Choose MCP111T-300E/TT when the reset line must be wire-OR'd with other reset sources or when the pull-up voltage differs from the supervisor supply, and choose MCP102T when a push-pull drive with stronger sink and source current is needed.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.3250 | $0.33 |
| 8+ | $0.1952 | $1.56 |
| 48000+ | $0.1938 | $9302.40 |
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