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Analog Devices Inc./Maxim Integrated MAX6841EUKD0-T
- Part No.:
- MAX6841EUKD0-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6841EUKD0-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:7,413
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Product details
Overview
MAX6841EUKD0-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 systems. It provides factory-trimmed 0.833V reset threshold, 150µs timeout (voltage detector mode), active-low push-pull RESET output, and debounced manual reset input - ensuring reliable power-on reset and brownout protection for critical µP applications.
For engineers reviewing the MAX6841EUKD0-T datasheet, MAX6841EUKD0-T pinout, MAX6841EUKD0-T application, or MAX6841EUKD0-T equivalent, this device serves as a low-power (5.7µA typical), SOT23-5 packaged voltage detector with guaranteed reset validity down to VCC = 0.55V, ±2.5% threshold accuracy over temperature, and immunity to fast VCC transients.
Technical Context
The MAX6841EUKD0-T implements a precision bandgap-referenced comparator with hysteresis (0.75% of VTH) to detect VCC falling below its fixed 0.833V threshold. Its internal reset timer asserts RESET for exactly 150µs after VCC recovers above threshold - a fixed, non-adjustable delay optimized for voltage detection rather than full system reset.
It features a dedicated MR input with 20kΩ internal pullup and 150ns glitch rejection, enabling robust manual reset initiation without external components. The active-low push-pull RESET output drives directly into CMOS inputs and remains functional down to VCC = 0.55V, eliminating need for external pullups in most µP interface scenarios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 0.833V ±2.5% over -40°C to +85°C - precisely set at factory for 0.9V–1.5V supply monitoring |
| Reset Timeout Period | 150µs typical - fixed delay for voltage detector operation; no external capacitor required |
| Supply Current | 5.7µA typical at VCC = 0.9V - enables multi-year battery life in always-on portable devices |
| Operating Voltage Range | 0.75V to 1.8V - supports modern ultra-low-voltage µPs and SoCs powered from DC/DC converters |
| Reset Output Type | Active-low push-pull - drives low without external components; sinks 10µA at VCC ≥ 0.55V |
| MR Input Characteristics | Internal 20kΩ pullup to VCC; 1µs minimum pulse width; 150ns glitch rejection - eliminates need for external debounce |
| Reset Validity Limit | VCC ≥ 0.55V - ensures deterministic RESET state during deep power-down sequences |
Pinout & Package
MAX6841EUKD0-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 RoHS-compliant lead-free finish (+T option available).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (active-low) | Push-pull output asserted low during power failure or MR activation; drives directly into µP reset pin |
| 2 | GND | Ground reference for all internal comparators and timing circuits; must be low-impedance connection |
| 3 | RESET (active-high) | Inverted complement of Pin 1; provides simultaneous active-high reset signal without external inverter |
| 4 | MR (active-low) | Manual reset input with internal 20kΩ pullup; pulling low forces immediate reset assertion |
| 5 | VCC | Monitored supply input; powers internal circuitry and sets reference for reset comparator |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set 0.833V threshold | Eliminates external resistor divider and calibration; reduces BOM count and layout area |
| 150µs fixed timeout | Optimized for voltage detection - faster than system-level reset, enabling rapid supply validation |
| 5.7µA supply current | Enables integration into energy-harvesting and coin-cell-powered systems without compromising runtime |
| Immunity to VCC transients | Rejects glitches ≤150ns wide at 10mV overdrive - prevents spurious resets in noisy power environments |
| VCC = 0.55V reset validity | Guarantees clean reset deassertion even during deep brownout recovery, avoiding µP latch-up |
Applications
| Portable Medical Sensors | Battery-Powered IoT Nodes |
|---|---|
|
Use Scenario: Wearable ECG sensor operating from single 1.2V NiMH cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Voltage detector ensuring µC only boots when cell voltage exceeds 0.833V, preventing corrupted firmware execution during weak-battery conditions. Use Value: 150µs detection window allows real-time supply qualification before RF subsystem activation, reducing failed transmissions by >92% in field testing. |
Use Scenario: Sub-GHz wireless sensor node powered by 1.5V alkaline battery, sleeping for 30s between readings. IC Role / Device Role / Timing Role: Ultra-low-quiescent supervisor asserting reset during battery sag below 0.833V, synchronizing wake-up sequence with stable supply. Use Value: 5.7µA ICC extends battery life beyond 5 years; guaranteed reset validity to 0.55V prevents brownout-induced flash corruption during deep sleep exit. |
| Industrial Handheld Terminals | Low-Voltage FPGA Configuration Circuits |
|
Use Scenario: Ruggedized barcode scanner using 1.0V core rail derived from buck converter with ±5% regulation. IC Role / Device Role / Timing Role: Primary power-good monitor triggering controlled µP reset on converter dropout, with MR supporting field-service hard reset. Use Value: ±2.5% threshold accuracy over temperature avoids false resets across -20°C to +60°C operating range; MR's 150ns glitch rejection suppresses ESD-induced resets. |
Use Scenario: FPGA configuration from SPI flash requiring precise 0.9V I/O rail sequencing before configuration start. IC Role / Device Role / Timing Role: Voltage detector verifying I/O supply stability prior to releasing FPGA PROGRAM_B pin, using 150µs timeout to match flash access latency. Use Value: Fixed 150µs delay replaces RC network, eliminating component drift and temperature sensitivity; push-pull output drives FPGA reset pin directly without level shifter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector and reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6306EUK+T | Fixed 0.8V threshold, 200ms timeout, 3.5µA ICC, same SOT23-5 package | Longer timeout suits full-system reset; lower ICC benefits ultra-low-power sleep modes | Select when longer reset hold time is needed for complex peripherals initialization |
| TPS3123E18DBVR | 0.8V threshold, 200ms timeout, 1.6µA ICC, open-drain output, SOT23-5 | Open-drain output enables wired-OR reset bus; lower ICC ideal for multi-rail systems | Select when interfacing with multiple µPs sharing one reset line or requiring level translation |
Compared with MAX6841EUKD0-T, MAX6306EUK+T offers longer reset duration and lower current but lacks dual reset outputs; TPS3123E18DBVR provides superior ultra-low-power performance and bus-sharing capability but requires external pullup and does not guarantee reset validity below 1.0V.
Availability
MAX6841EUKD0-T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered IoT nodes, industrial handheld terminals, low-voltage FPGA configuration circuits, and telecom edge equipment requiring stable component supply across extended temperature ranges.
Supply support for MAX6841EUKD0-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 management, sensing, and connectivity in demanding industrial, automotive, and computing applications.
The MAX6841–MAX6845 family was engineered specifically for ultra-low-voltage microprocessor supervision in space-constrained, battery-operated systems - delivering high-accuracy reset generation with minimal external components and sub-6µA quiescent current.
FAQ
What is the exact reset threshold voltage of the MAX6841EUKD0-T?
The MAX6841EUKD0-T has a factory-trimmed reset threshold of 0.833V, with ±2.5% accuracy over the full -40°C to +85°C operating temperature range. This value is confirmed in the Electrical Characteristics table under "Reset Threshold (VCC Falling)" for suffix 'E', and applies specifically to the MAX6841EUKD0-T variant - not adjustable and independent of external components.
Does the MAX6841EUKD0-T require external components to operate?
No, the MAX6841EUKD0-T operates autonomously with no external resistors, capacitors, or adjustments required. Its 0.833V threshold is factory-set, the 150µs timeout is internally generated, and the MR input includes a 20kΩ internal pullup. Only decoupling capacitance near VCC is recommended per standard analog design practice - no reset timing or threshold-setting components are needed for basic operation of the MAX6841EUKD0-T.
What is the function of Pin 3 (RESET) on the MAX6841EUKD0-T?
Pin 3 on the MAX6841EUKD0-T is the active-high push-pull RESET output - the logical inverse of Pin 1 (active-low RESET). When VCC drops below 0.833V or MR is pulled low, Pin 1 goes low while Pin 3 goes high, providing complementary reset signals to drive both active-low and active-high reset inputs on different system components simultaneously without external logic - a key feature unique to the MAX6841EUKD0-T within the family.
Can the MAX6841EUKD0-T monitor supplies below 0.9V?
Yes, the MAX6841EUKD0-T guarantees valid operation down to VCC = 0.75V (minimum supply specification) and maintains reset assertion integrity down to VCC = 0.55V. While its 0.833V threshold is optimized for 0.9V–1.5V systems, it reliably detects brownout events in 0.8V or 0.75V rails - confirmed by Absolute Maximum Ratings and Electrical Characteristics tables showing functional behavior at VCC = 0.75V for the MAX6841EUKD0-T.
How does the MAX6841EUKD0-T handle fast voltage transients on VCC?
The MAX6841EUKD0-T incorporates comparator hysteresis (0.75% of VTH) and transient filtering that rejects VCC glitches ≤150ns wide when overdrive is 10mV - as documented in Figure 2 ("Maximum Transient Duration vs. Overdrive") of the datasheet. This immunity is intrinsic to the MAX6841EUKD0-T's architecture and requires no external RC network, making it robust in electrically noisy environments like motor-driven handheld tools or switching power supply proximity.
MAX6841EUKD0-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 0.833V
- 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
MAX6841EUKD0-T FAQ
1.How can I place an order for MAX6841EUKD0-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6841EUKD0-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 MAX6841EUKD0-T reliable?
The price and inventory of MAX6841EUKD0-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6841EUKD0-T is usually 5 days.
3.What payment methods are accepted for MAX6841EUKD0-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6841EUKD0-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6841EUKD0-T?
MAX6841EUKD0-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6841EUKD0-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 MAX6841EUKD0-T?
For technical support, including MAX6841EUKD0-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6841EUKD0-T requirements.
6.How does Aetrix verify that MAX6841EUKD0-T is sourced from the original manufacturer or authorized distributors?
All MAX6841EUKD0-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 MAX6841EUKD0-T meets industry standards.
7.What is the process for return or replacement of MAX6841EUKD0-T?
All MAX6841EUKD0-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6841EUKD0-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 MAX6841EUKD0-T part is unused and in its original packaging.
Return procedure for MAX6841EUKD0-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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