MCP111T-240E/TT Microchip Integrated Circuit (SOT23 (3-Pin)) In Stock
MCP111T-240E/TT is a single-channel voltage supervisor from Microchip with a precise 2.32 V nominal reset threshold (2.262 V to 2.378 V trip range), active-low open-drain output, and a tiny 3-pin SOT-23 package for low-voltage MCU and processor reset monitoring.
- Manufacturer
- Microchip
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP111T-240E/TT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2710(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 2.32 V nominal threshold with ±2.5% accuracy (2.262 V to 2.378 V trip window)
- Active-low open-drain reset output for direct connection to MCU RESET pins
- Ultra-low supply current below 35 µA for minimal power consumption in always-on monitoring
- No external components required — threshold set internally for simplified board design
- 3-pin SOT-23 package occupying less than 3 mm² of PCB area
- Lead-free RoHS-compliant with JESD-609 e3 moisture rating
- Industrial temperature range -40°C to +125°C
Applications
MCP111T-240E/TT is used as a power-on reset supervisor for microcontrollers and FPGAs operating from a 2.5 V supply, ensuring the processor holds in reset until the rail rises above the 2.32 V threshold and preventing erratic operation during brown-out events or slow supply ramp conditions. It is widely integrated into battery-backed SRAM circuits, flash memory write-protect circuits, and low-voltage embedded boards where a compact, accurate, and inexpensive supervisory function is required with no external resistor divider.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-3 |
| Factory Lead Time | 7Weeks |
| 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 |
| 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) | 2.262V |
| 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 | +2.32V |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| 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
What voltage threshold does MCP111T-240E/TT detect, and how tight is the trip-point tolerance?
MCP111T-240E/TT monitors a 2.32 V nominal threshold with a ±2.5% tolerance, meaning the reset asserts between 2.262 V and 2.378 V. This tight window is achieved through an on-chip precision reference, making it suitable for 2.5 V rail supervisory functions without requiring an external resistor divider or trimming.
How does MCP111T-240E/TT's open-drain output interface with MCU reset pins that require different pull-up voltages?
The active-low open-drain RESET output can be pulled up to any voltage up to the device's VCC rating, allowing the supervisor to drive MCU RESET pins operating at 1.8 V, 3.3 V, or 2.5 V logic levels simply by selecting the appropriate pull-up resistor value, typically 10 kΩ, without level-shifting circuitry.
For a space-constrained wearable design, how large is the SOT-23 package footprint of MCP111T-240E/TT?
The 3-pin SOT-23 package body is approximately 2.9 mm × 1.6 mm with a maximum height of 1.45 mm and 0.95 mm lead pitch, making it one of the smallest available voltage supervisor packages; a single pull-up resistor and bypass capacitor complete the application circuit in under 10 mm² of total board area.
Is MCP111T-240E/TT a suitable replacement for MAX803 in a 2.5 V processor reset circuit?
MCP111T-240E/TT and MAX803 are both 3-pin SOT-23 voltage supervisors with an active-low open-drain output and similar threshold accuracy. The Microchip part operates to -40°C to +125°C versus MAX803's +70°C limit, so MCP111T-240E/TT is a better fit for industrial or automotive reset circuits that must function across an extended temperature range.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.4500 | $0.45 |
| 25+ | $0.3700 | $9.25 |
| 100+ | $0.3400 | $34.00 |
| 250+ | $0.3247 | $81.17 |
| 500+ | $0.3214 | $160.70 |
| 1000+ | $0.2710 | $271.00 |
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