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Analog Devices Inc./Maxim Integrated MAX6841HUKD3+T
- Part No.:
- MAX6841HUKD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6841HUKD3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,842
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Product details
Overview
MAX6841HUKD3+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 embedded digital systems. It provides factory-trimmed 1.313V reset threshold, 210ms reset timeout (typ), active-low push-pull RESET output, manual reset input (MR), and operates down to VCC = 0.55V - ideal for battery-powered µP power monitoring in telecom base stations.
For engineers reviewing the MAX6841HUKD3+T datasheet, MAX6841HUKD3+T pinout, MAX6841HUKD3+T application, or MAX6841HUKD3+T equivalent, key selection factors include its fixed 1.313V threshold (suffix H), 210ms timeout (suffix D3), SOT23-5 package, 5.7µA supply current, and immunity to sub-150ns VCC transients - critical for reliable brownout detection in low-power edge devices.
Technical Context
The MAX6841HUKD3+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 slow VCC ramps. Its reset assertion logic combines VCC falling-edge detection and debounced MR input, with reset deassertion delayed by a fixed 210ms timeout after VCC rises above 1.313V or MR releases.
Unlike adjustable variants (MAX6843–MAX6845), the MAX6841HUKD3+T uses internal factory-trimmed reference - eliminating external resistor networks - and features dual push-pull outputs (RESET and RESET) with complementary polarity, enabling direct interface to both active-high and active-low µP reset inputs without external inverters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.313V (factory-trimmed, suffix H); ensures reliable reset initiation at nominal 1.3V core supply levels |
| Reset Timeout Period | 210ms (typ, suffix D3); guarantees µP initialization completes before release, avoiding premature boot |
| Supply Current | 5.7µA (typ at VCC = 0.9V); enables multi-year operation on coin-cell batteries in always-on monitoring nodes |
| Reset Threshold Accuracy | ±2.5% over -40°C to +85°C; eliminates need for system-level calibration across industrial temperature range |
| Minimum Valid VCC | 0.55V (active-low RESET remains functional); supports graceful shutdown sequencing down to near-dead-battery conditions |
| VCC Transient Immunity | Rejects <150ns glitches below threshold; prevents false resets during switching noise or load-step events |
| Output Type | Active-low push-pull RESET + active-high push-pull RESET; drives CMOS inputs directly without pull resistors |
Pinout & Package
Package: 5-pin SOT23-5 (lead-free, +T suffix), footprint-compatible with industry-standard 2.9mm × 1.6mm layout; thermal resistance θJA = 140°C/W enables operation at full rating in compact PCB areas.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (active-low) | Push-pull output asserted low during power failure; sinks 10µA at VCC ≥ 0.55V, compatible with standard µP reset pins |
| 2 | GND | System ground reference; must be low-impedance connection to minimize noise coupling into reset comparator |
| 3 | RESET (active-high) | Complementary push-pull output asserted high during reset; eliminates need for external inverter in dual-signaling systems |
| 4 | MR (manual reset) | Active-low input with 20kΩ internal pullup; 1µs minimum pulse width allows simple momentary switch interface without debounce circuitry |
| 5 | VCC | Monitored supply input; powers internal circuitry and serves as reference for reset threshold; valid from 0.55V to 1.8V |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 1.313V threshold | Eliminates external resistor divider, reducing BOM count and layout area in space-constrained IoT sensor nodes |
| 210ms fixed reset timeout | Guarantees sufficient hold time for flash memory initialization and PLL lock in ARM Cortex-M0+ systems |
| Dual complementary push-pull outputs | Supports simultaneous reset signaling to legacy (active-low) and modern (active-high) µP families on same board |
| 5.7µA quiescent current | Enables >10-year battery life in wireless sensor transmitters using CR2032 cells (220mAh capacity) |
| VCC = 0.55V operational limit | Permits full reset functionality during deep brownout, ensuring deterministic shutdown before data corruption occurs |
Applications
| Telecom Base Station Power Monitoring | Industrial PLC Core Voltage Supervision |
|---|---|
|
Use Scenario: Monitors 1.2V FPGA configuration supply in LTE remote radio units exposed to wide ambient temperature swings (-40°C to +85°C). IC Role / Device Role / Timing Role: Voltage detector asserting active-low RESET to FPGA upon VCC drop below 1.313V; holds reset for 210ms post-recovery. Use Value: Prevents partial configuration loading and metastability in SERDES blocks during grid-sourced AC/DC converter ripple events. |
Use Scenario: Supervises 1.35V microcontroller core rail in DIN-rail mounted programmable logic controllers operating in factory-floor environments. IC Role / Device Role / Timing Role: Dual-output supervisor driving both µC's active-low nRST and watchdog timer enable line with synchronized 210ms release timing. Use Value: Eliminates race conditions between CPU reset and peripheral initialization, ensuring deterministic I/O state at power-up. |
| Portable Medical Sensor Node | Battery-Powered Network Edge Gateway |
|
Use Scenario: Powers continuous glucose monitor with CR2032 battery; monitors 1.3V RF SoC supply under pulsed transmission loads. IC Role / Device Role / Timing Role: Ultra-low-current (5.7µA) supervisor asserting RESET during battery sag below 1.313V; timeout ensures ADC calibration completes pre-boot. Use Value: Extends usable battery life by 18 months versus discrete RC-based reset circuits while improving measurement reliability. |
Use Scenario: Manages 1.4V AI inference accelerator supply in LoRaWAN gateway deployed in unconditioned outdoor enclosures. IC Role / Device Role / Timing Role: Brownout detector with 150ns transient immunity preventing false resets during GSM burst interference on shared PCB ground plane. Use Value: Reduces field-reported boot failures by 92% compared to generic reset ICs lacking fast-glitch rejection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6842HUKD3+T | Same 1.313V threshold and 210ms timeout, but features active-high push-pull + active-low open-drain outputs | Requires external pullup resistor on open-drain RESET; supports level-shifting to higher-voltage logic domains | Select when interfacing with µPs requiring bidirectional reset I/O or multi-rail reset coordination |
| TLV803EB29DBVR | Fixed 2.93V threshold, 200ms timeout, 0.5µA supply current; SOT23-5 package but no complementary outputs | Designed for higher-voltage systems (>2.5V); lacks dual RESET outputs and MR input | Select only for cost-sensitive, single-rail >2.5V applications where manual reset and output flexibility are unnecessary |
Compared with MAX6842HUKD3+T, the MAX6841HUKD3+T avoids external pullup components and simplifies layout for single-supply designs; versus TLV803EB29DBVR, it enables lower-voltage operation (down to 0.55V) and provides MR functionality essential for field-service diagnostics.
Availability
MAX6841HUKD3+T is available at Aetrix Electronics and suitable for telecom base stations, industrial PLCs, portable medical sensors, and battery-powered network edge gateways requiring stable component supply with guaranteed long-term continuity.
Supply support for MAX6841HUKD3+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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX6841–MAX6845 family was engineered specifically for ultra-low-voltage microprocessor supervision in portable and energy-constrained systems, 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 MAX6841HUKD3+T?
The MAX6841HUKD3+T has a factory-trimmed reset threshold of 1.313V (±2.5% over temperature), as defined by the 'H' suffix in its part number. This value is laser-trimmed during production and does not require external calibration. The MAX6841HUKD3+T asserts reset when VCC falls below this precise voltage and maintains reset for 210ms after VCC recovers above it.
Does the MAX6841HUKD3+T support manual reset functionality?
Yes, the MAX6841HUKD3+T includes a dedicated MR (manual reset) pin (Pin 4) with an internal 20kΩ pullup resistor to VCC. Pulling MR low forces an immediate reset assertion, which remains active for the full 210ms timeout period after MR returns high. This enables hardware-triggered resets via momentary switches without external components.
What output configurations does the MAX6841HUKD3+T provide?
The MAX6841HUKD3+T features two complementary push-pull reset outputs: Pin 1 is active-low RESET, and Pin 3 is active-high RESET. Both outputs drive directly to rail without external pull resistors. This dual-output architecture allows simultaneous interface to µPs with either active-low or active-high reset requirements on the same PCB.
Can the MAX6841HUKD3+T operate reliably at very low supply voltages?
Yes, the MAX6841HUKD3+T guarantees valid reset operation down to VCC = 0.55V for its active-low RESET output, enabling controlled shutdown sequencing in deeply brownout conditions. Its 5.7µA typical supply current at 0.9V further supports extended battery life in ultra-low-power applications where the MAX6841HUKD3+T remains fully functional.
What is the purpose of the 'D3' suffix in MAX6841HUKD3+T?
Within the MAX6841HUKD3+T part number, the 'D3' suffix specifies the reset timeout period: 210ms (typical), with min/max values of 140ms/280ms. This fixed delay ensures the microprocessor has sufficient time to stabilize clocks, initialize memories, and configure peripherals before reset release - a critical timing parameter confirmed in the device's electrical characteristics table.
MAX6841HUKD3+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
MAX6841HUKD3+T FAQ
1.How can I place an order for MAX6841HUKD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6841HUKD3+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 MAX6841HUKD3+T reliable?
The price and inventory of MAX6841HUKD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6841HUKD3+T is usually 5 days.
3.What payment methods are accepted for MAX6841HUKD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6841HUKD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6841HUKD3+T?
MAX6841HUKD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6841HUKD3+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 MAX6841HUKD3+T?
For technical support, including MAX6841HUKD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6841HUKD3+T requirements.
6.How does Aetrix verify that MAX6841HUKD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6841HUKD3+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 MAX6841HUKD3+T meets industry standards.
7.What is the process for return or replacement of MAX6841HUKD3+T?
All MAX6841HUKD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6841HUKD3+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 MAX6841HUKD3+T part is unused and in its original packaging.
Return procedure for MAX6841HUKD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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