MCP100T-315I/TT Microchip Integrated Circuit (SOT23 (3-Pin)) In Stock
The MCP100T-315I/TT is a single-channel voltage supervisor IC from Microchip with a fixed 3.075 V threshold and active-low open-drain reset output. It monitors supply rails and holds a processor in reset during power-up and brownout in a tiny 3-pin SOT-23 package.
- Manufacturer
- Microchip
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP100T-315I/TT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1820(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
- Fixed 3.075 V threshold voltage supervisor with active-low open-drain reset output, providing precise supply monitoring for 3.3 V microcontroller and logic reset circuits
- Minimal component count: single 3-pin SOT-23 package with no external resistors required, enabling the smallest possible power-on reset footprint of under 3 mm²
- Wide operating temperature range and Pb-free packaging meeting IPC/JEDEC J-STD-020 MSL standards for industrial and consumer embedded system reliability
Applications
The MCP100T-315I/TT is used in 3.3 V microcontroller-based embedded systems to guarantee a clean power-on reset, preventing processors from starting in an undefined state when the supply voltage rises slowly or drops momentarily during brownout. It fits portable consumer electronics and IoT sensor nodes where board space is at a premium and a discrete 3-pin SOT-23 supervisor occupies less than 3 mm² versus a larger SOIC alternative. Its fixed 3.075 V threshold also provides plug-and-play monitoring of 3.3 V regulators in industrial controllers and data-logging equipment.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-3 |
| Factory Lead Time | 15Weeks |
| YTEOL | 8 |
| Adjustable Threshold | NO |
| Analog IC - Other Type | VOLTAGE SUPERVISOR/RESET IC |
| 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 |
| Supply Current-Max (Isup) | 0.06mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1V |
| Supply Voltage-Nom (Vsup) | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +3.08V |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
At what supply voltage does MCP100T-315I/TT assert its active-low reset output?
The MCP100T-315I/TT asserts the active-low reset output when the monitored supply falls below 3.075 V, holding the reset line low until the supply recovers above the threshold and an internal timeout of typically 140 ms (for a standard MCP100 variant) has elapsed, ensuring safe microcontroller startup.
How does the 3-pin SOT-23 package of MCP100T-315I/TT compare in size to 5-pin or 6-pin supervisor alternatives?
The 3-pin SOT-23 measures approximately 1.3 mm x 2.9 mm, occupying under 3.8 mm² of PCB area, whereas a 5-pin SOT-23 supervisor measures about 1.6 mm x 2.9 mm and a 6-pin SC-70 variant is similar—so MCP100T-315I/TT saves roughly 20–30% board space while providing identical single-rail monitoring functionality.
Can MCP100T-315I/TT directly drive the RESET pin of a 3.3 V MCU without additional buffering?
Yes, the open-drain active-low output of MCP100T-315I/TT can directly connect to a microcontroller RESET pin that has an internal pull-up to 3.3 V, sinking sufficient current to pull the reset line below 0.4 V (VOL) while the supply is below 3.075 V, meeting the VIL reset threshold of virtually all 3.3 V microcontrollers.
In a dual-voltage 3.3 V and 5 V system, when would MCP100T-315I/TT be chosen over an adjustable-threshold supervisor?
When the design uses only a 3.3 V logic supply and the reset threshold of 3.075 V is acceptable, MCP100T-315I/TT eliminates the 2 external resistors needed by an adjustable-threshold device, saving component cost and reducing the BOM by 2 lines, which is especially valuable in high-volume production runs of IoT or consumer devices.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
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