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Analog Devices Inc./Maxim Integrated MAX6841HUKD0+T
- Part No.:
- MAX6841HUKD0+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6841HUKD0+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,914
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Product details
Overview
MAX6841HUKD0+T from Maxim Integrated is an ultra-low-voltage microprocessor supervisory circuit designed to monitor +0.9V to +1.5V power supplies in portable and battery-powered digital systems. It features a factory-trimmed 1.313V reset threshold (H suffix), 150µs timeout (D0 suffix), active-low push-pull RESET output, and manual reset input (MR). Its 5.7µA typical supply current and guaranteed reset validity down to VCC = 0.55V make it suitable for critical µP power monitoring in space-constrained applications.
For engineers reviewing the MAX6841HUKD0+T datasheet, MAX6841HUKD0+T pinout, MAX6841HUKD0+T application, or MAX6841HUKD0+T equivalent, key selection criteria include its fixed 1.313V threshold, 150µs reset timeout, SOT23-5 package compatibility, push-pull active-low output configuration, and immunity to sub-150ns VCC transients - all verified for -40°C to +85°C operation.
Technical Context
The MAX6841HUKD0+T implements a precision voltage comparator with ±2.5% threshold accuracy over temperature and built-in hysteresis (0.75% of VTH) to prevent chatter during brownout recovery. Its reset assertion logic responds exclusively to VCC falling below 1.313V or MR low assertion, with no RESET IN functionality - distinguishing it from MAX6843–MAX6845 variants.
Reset deassertion follows a fixed 150µs timeout after VCC rises above 1.313V and MR returns high. The active-low push-pull RESET output drives low with <0.2×VCC VOL at 10µA sink, remains valid down to VCC = 0.55V, and requires no external pullup - unlike open-drain alternatives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.313V ±2.5% - factory-trimmed for stable monitoring of 1.3V-core supplies without external resistors |
| Reset Timeout Period | 150µs (typ) - ultra-fast response for voltage detector mode, enabling rapid system recovery after transient dips |
| Supply Current | 5.7µA (typ at VCC = 0.9V) - enables multi-year battery life in always-on portable instrumentation |
| Operating Voltage Range | +0.75V to +1.8V - supports operation down to sub-1V logic rails while maintaining reset validity to 0.55V |
| Output Configuration | Active-low push-pull - eliminates need for external pullup resistor and ensures defined logic state during full VCC range |
| MR Input Characteristics | Internal 20kΩ pullup; 1µs minimum pulse width - allows direct connection to momentary switches without debounce circuitry |
| Transient Immunity | Rejects VCC glitches <150ns wide at 10mV overdrive - prevents false resets in noisy power environments |
Pinout & Package
MAX6841HUKD0+T is housed in a 5-pin SOT23-5 package (JEDEC MO-178AA), measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads and lead-free +T marking per RoHS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (active-low) | Push-pull output asserted low during reset; sinks current to GND without external components |
| 2 | GND | Ground reference for all internal comparators and output stage |
| 3 | RESET (active-high) | Inverted complement of Pin 1 - provides simultaneous active-high reset signal for dual-input µPs |
| 4 | MR (active-low) | Manual reset input with internal 20kΩ pullup to VCC; asserts reset when pulled ≤0.3×VCC |
| 5 | VCC | Monitored supply input; powers device and sets reference for reset comparator |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set 1.313V threshold | Eliminates external resistor network and calibration effort for 1.3V core supply monitoring |
| 150µs reset timeout | Enables use as a voltage detector rather than supervisor - ideal for fast-response power-good signaling |
| Active-low push-pull output | Drives µP reset pin directly without pullup resistor, reducing BOM count and PCB area |
| Guaranteed reset down to VCC = 0.55V | Ensures deterministic reset behavior across full discharge curve of Li-ion and coin-cell batteries |
| MR glitch rejection | Filters noise spikes <150ns, allowing reliable manual reset in electrically noisy industrial handheld devices |
Applications
| Portable Medical Sensors | Battery-Powered IoT Edge Nodes |
|---|---|
|
Use Scenario: Wearable ECG sensor operating from single 3.0V CR2032 coin cell with 1.2V LDO output powering ARM Cortex-M0+ MCU. IC Role / Device Role / Timing Role: Voltage detector asserting reset when LDO output falls below 1.313V due to battery depletion or load surge. Use Value: Prevents MCU corruption during brownout by triggering controlled shutdown before supply collapses below functional voltage. |
Use Scenario: LoRaWAN node powered by 2xAA alkaline cells stepping down to 1.3V for ultra-low-power microcontroller and RF transceiver. IC Role / Device Role / Timing Role: Supervisor ensuring µP remains held in reset until regulated 1.3V rail stabilizes post-power-up and during voltage sags. Use Value: Eliminates need for RC-based reset circuits, improving startup reliability across 0.9V–1.5V battery voltage range. |
| Industrial Handheld Terminals | Low-Voltage FPGA Configuration Circuits |
|
Use Scenario: Ruggedized barcode scanner using 1.3V core supply derived from buck converter, subject to motor-induced supply transients. IC Role / Device Role / Timing Role: Immune reset monitor rejecting <150ns VCC glitches while asserting clean reset on sustained brownouts. Use Value: Maintains system integrity in electromagnetically harsh environments without false reboots. |
Use Scenario: FPGA configuration circuit where 1.3V auxiliary rail powers configuration PROM and I/O banks prior to core logic initialization. IC Role / Device Role / Timing Role: Voltage detector generating precise 150µs reset pulse synchronized to 1.3V rail stabilization. Use Value: Guarantees FPGA starts configuration only after stable 1.3V is confirmed - preventing bitstream corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6841FUKD0+T | Lower 1.050V reset threshold (F suffix); same 150µs timeout, SOT23-5, push-pull outputs | Targets 1.0V–1.1V core supplies (e.g., some ultra-low-power MCUs), not 1.3V rails | Select when monitoring sub-1.1V supplies; otherwise MAX6841HUKD0+T's 1.313V threshold matches common 1.3V LDOs. |
| TLV803EC26DBVR | 1.6V threshold, 200ms timeout, SOT23-5, open-drain active-low output; 1.8µA ICC | Designed for higher-voltage systems (>1.6V) requiring longer timeout; open-drain demands external pullup | Choose for 1.6V+ supplies needing longer reset hold time; MAX6841HUKD0+T offers tighter threshold accuracy and push-pull simplicity for 1.3V systems. |
Compared with MAX6841FUKD0+T and TLV803EC26DBVR, the MAX6841HUKD0+T uniquely delivers 1.313V precision thresholding with 150µs response and integrated push-pull drive - optimizing for 1.3V-core portable electronics where minimal BOM, fast detection, and guaranteed low-VCC operation are critical.
Availability
MAX6841HUKD0+T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered IoT edge nodes, industrial handheld terminals, and low-voltage FPGA configuration circuits requiring stable component supply across extended temperature ranges.
Supply support for MAX6841HUKD0+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for power, sensing, interface, and reliability-critical applications.
The MAX6841–MAX6845 family was engineered specifically for ultra-low-voltage microprocessor supervision in portable and battery-operated equipment, addressing the need for sub-1V reset accuracy, nanoamp quiescent current, and robust transient immunity.
FAQ
What is the exact reset threshold voltage of the MAX6841HUKD0+T?
The MAX6841HUKD0+T has a factory-trimmed reset threshold of 1.313V with ±2.5% accuracy over the -40°C to +85°C temperature range. This value is fixed by the 'H' suffix in the part number and does not require external resistor adjustment. The threshold is referenced to VCC and remains stable across voltage and temperature variations as specified in the Electrical Characteristics table.
Does the MAX6841HUKD0+T support adjustable reset thresholds via RESET IN?
No, the MAX6841HUKD0+T does not support RESET IN functionality. It belongs to the MAX6841/MAX6842 subgroup, which uses factory-trimmed internal thresholds only. Adjustable threshold capability is exclusive to MAX6843/MAX6844/MAX6845 variants. The MAX6841HUKD0+T has no RESET IN pin - Pin 3 is the active-high RESET output, not an input.
What is the function of Pin 3 on the MAX6841HUKD0+T?
Pin 3 of the MAX6841HUKD0+T is the active-high push-pull RESET output - the logical inverse of Pin 1 (active-low RESET). When VCC drops below 1.313V or MR is asserted, Pin 1 goes low while Pin 3 goes high, providing complementary reset signals for microprocessors or logic that require either polarity. Both outputs share the same 150µs timeout period.
Can the MAX6841HUKD0+T operate reliably at VCC = 0.75V?
Yes, the MAX6841HUKD0+T is fully specified to operate from VCC = 0.75V to +1.8V. Its reset comparator remains functional, and both push-pull RESET outputs maintain valid logic levels down to VCC = 0.55V. At 0.75V, supply current is ~6.2µA (typ), and reset threshold accuracy holds within ±2.5%, making it suitable for deep-battery-discharge scenarios.
Is a pullup resistor required for the RESET output of the MAX6841HUKD0+T?
No, a pullup resistor is not required for either RESET output (Pins 1 or 3) of the MAX6841HUKD0+T because both are push-pull configured. The active-low output (Pin 1) actively drives low during reset and high when deasserted; the active-high output (Pin 3) actively drives high during reset and low when deasserted. This eliminates external components and ensures defined states across the entire VCC operating range.
MAX6841HUKD0+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.313V
- Output:
- Push-Pull, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 150µs Typical
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6841HUKD0+T FAQ
1.How can I place an order for MAX6841HUKD0+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6841HUKD0+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX6841HUKD0+T reliable?
The price and inventory of MAX6841HUKD0+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6841HUKD0+T is usually 5 days.
3.What payment methods are accepted for MAX6841HUKD0+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6841HUKD0+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6841HUKD0+T?
MAX6841HUKD0+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6841HUKD0+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX6841HUKD0+T?
For technical support, including MAX6841HUKD0+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6841HUKD0+T requirements.
6.How does Aetrix verify that MAX6841HUKD0+T is sourced from the original manufacturer or authorized distributors?
All MAX6841HUKD0+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX6841HUKD0+T meets industry standards.
7.What is the process for return or replacement of MAX6841HUKD0+T?
All MAX6841HUKD0+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6841HUKD0+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX6841HUKD0+T part is unused and in its original packaging.
Return procedure for MAX6841HUKD0+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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