MAX6412UK22+ Analog Devices Integrated Circuit (SOT23 (5-Pin)) In Stock
Analog Devices MAX6412UK22+ is a low-power microprocessor reset IC with a fixed 2.2 V threshold, manual reset input, and capacitor-adjustable reset timeout delay in a 5-pin SOT-23 package. It supervises a single supply rail and provides a reliable active-low RESET signal for embedded processor and FPGA designs.
- Manufacturer
- Analog Devices
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MAX6412UK22+ Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 2.2 V undervoltage threshold for precise supply supervision with no external resistors
- Capacitor-adjustable reset timeout delay from sub-millisecond to seconds for flexible power-up sequencing
- Manual reset (MR) input for hardware-forced processor reset without supply interruption
- Ultra-low quiescent current suited for battery-powered portable designs
- 5-pin SOT-23 package for minimal PCB footprint in space-constrained applications
Applications
The MAX6412UK22+ is used in microprocessor-based embedded systems, IoT sensor nodes, and portable consumer devices to ensure reliable processor reset during power-up, brownout, and manual reset events. Its capacitor-adjustable timeout is especially useful in designs where the supply rail ramps slowly or where the processor requires a controlled startup delay of tens of milliseconds before de-asserting reset.
Specifications
| Manufacturer Package Code | 5-SOT_23-N/A |
| Date Of Intro | 2002-03-29 |
| YTEOL | 8.5 |
| Additional Feature | MNL RST:Y;PW FL IO:N;PRG RST DLY:Y;WD:N;WDO:N;WWD:N |
| Adjustable Threshold | NO |
| Analog IC - Other Type | VOLTAGE SUPERVISOR/RESET IC |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 0.0045mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +2.188V |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | SOT23 (5-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 | Japan, Mainland China, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand, USA |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How is the reset timeout delay adjusted on the MAX6412UK22+ and what range is achievable?
The reset timeout on the MAX6412UK22+ is set by connecting an external capacitor to the CT pin; larger capacitance extends the delay. A 10 nF capacitor yields a reset timeout of approximately 100 ms, while values from 1 nF to 100 nF cover a range of roughly 10 ms to 1000 ms, allowing firmware and power supply sequencing requirements to be met without a separate timing IC.
What supply voltage trip point does the MAX6412UK22+ use to assert the reset signal?
The MAX6412UK22+ has a fixed undervoltage reset threshold of 2.2 V. When the monitored supply drops below 2.2 V, the device asserts the active-low RESET output and holds it low for the programmed timeout period after the supply recovers above threshold, ensuring the processor does not run with an unstable supply.
Does the MAX6412UK22+ support forced hardware reset without cycling the supply?
Yes. The MAX6412UK22+ includes a manual reset (MR) input pin that allows an external signal or push-button switch to assert the RESET output at any time regardless of the supply voltage level. This is useful in field-service scenarios where a software-controlled or operator-triggered processor restart of the 1-channel supervisor is required without power cycling.
Is the MAX6412UK22+ suitable for a 3.3 V rail monitoring scenario in an industrial controller?
The MAX6412UK22+ monitors a 2.2 V threshold, which is below a nominal 3.3 V rail. For a 3.3 V supply, the -22 suffix (2.2 V) would assert reset only when the supply falls below 2.2 V, roughly 33% below nominal. Designers targeting a tighter 3.3 V brownout window should select a MAX6412 variant with a threshold closer to 3.0 V or 3.08 V to match the 5-pin SOT-23 footprint.
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Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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