MIC842NYMT T5 Microchip Undefined or Miscellaneous (Small Outline No-lead) In Stock
The MIC842NYMT T5 is a micropower precision comparator from Microchip (formerly Micrel) with open-drain output and 1.5 V to 5.5 V supply range, housed in a 4-pin TDFN package for ultra-compact threshold detection and battery monitoring circuits. Its open-drain output enables flexible logic interfacing and wired-OR bus configurations. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline No-lead
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Category
- Undefined or Miscellaneous
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Micropower single-channel precision comparator with open-drain output supporting 1.5 V to 5.5 V supply range for battery-powered threshold detection at minimal quiescent current
- Open-drain output stage enabling wired-OR connections and flexible pull-up to supply voltages different from VCC, ideal for mixed-voltage logic interfacing
- 4-pin TDFN package providing the smallest possible PCB footprint for voltage threshold monitoring in IoT sensors, wearables, and miniaturized portable electronics
Applications
The MIC842NYMT T5 is designed for low-power voltage threshold detection in battery management circuits, where its 1.5 V minimum supply allows operation from single-cell alkaline or Li-ion batteries nearing end-of-discharge. Its open-drain output directly drives LED indicators, enable pins of power management ICs, or interrupt inputs of microcontrollers without additional level-shifting. Wearables, IoT sensor nodes, and portable instruments rely on its micropower consumption to extend battery life while continuously monitoring supply or signal threshold crossings.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What supply voltage range does the MIC842NYMT T5 support, and how does it enable battery end-of-life detection?
The MIC842NYMT T5 operates from 1.5 V to 5.5 V, covering single-cell alkaline batteries (down to 0.9 V cutoff with a 1.5 V nominal), Li-ion cells (2.5 V to 4.2 V), and regulated 3.3 V or 5 V rails. By connecting the battery voltage through a resistor divider to the non-inverting input and a precision reference to the inverting input, the comparator triggers its open-drain output when the battery drops below a preset threshold, alerting the system MCU via a GPIO interrupt.
How does the open-drain output of the MIC842NYMT T5 simplify mixed-voltage logic interfacing?
An open-drain output has no internal pull-up to VCC, so a designer can connect an external pull-up resistor to any logic supply voltage between 1.5 V and 5.5 V. This means the comparator running from a 1.8 V supply can drive a 3.3 V logic input directly by pulling up to the 3.3 V rail, eliminating a discrete level-shifter IC and reducing the total BOM by at least 2 components per channel.
In what ways does the 4-pin TDFN package of the MIC842NYMT T5 benefit ultra-compact wearable and IoT PCB designs?
The TDFN-4 package measures approximately 1 mm × 1 mm with a 0.5 mm pitch, occupying less than 1.5 mm² of board area including land pads. This is roughly 10× smaller than an SOT-23-5 comparator package. For a smartwatch or fitness tracker PCB where every square millimeter is contested by battery, sensor, and radio components, a sub-mm² comparator enables threshold monitoring to be added without revisiting the overall board floor-plan.
How does the MIC842NYMT T5 compare to a standard LM393 comparator in power consumption for always-on monitoring?
The MIC842NYMT T5 is a micropower device with supply current typically in the range of 1–6 µA, while the LM393 draws approximately 0.4–1.0 mA per comparator channel. In an always-on battery monitor drawing power continuously from a 200 mAh coin cell, the MIC842NYMT T5's micropower consumption extends the monitoring lifetime by roughly 100× compared to an LM393, enabling months to years of continuous threshold detection on a small primary cell.
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