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Analog Devices Inc./Maxim Integrated MAX6841DUKD0+T
- Part No.:
- MAX6841DUKD0+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6841DUKD0+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,266
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Product details
Overview
MAX6841DUKD0+T from Maxim Integrated is an ultra-low-voltage microprocessor supervisory circuit designed to monitor +0.75V to +1.8V power supplies in portable and battery-powered digital systems. It features a factory-trimmed 0.788V reset threshold (D suffix), 30ms reset timeout (D2 suffix), active-low push-pull RESET output, and debounced manual reset input (MR). It ensures reliable µP reset during brownout and power-up in space-constrained applications such as handheld instruments and telecom baseband modules.
For engineers reviewing the MAX6841DUKD0+T datasheet, MAX6841DUKD0+T pinout, MAX6841DUKD0+T application, or MAX6841DUKD0+T equivalent, this page provides verified functional identity, SOT23-5 pin mapping, reset timing accuracy (±2.5%), VCC transient immunity, and direct alternatives with documented output configuration and timeout differences.
Technical Context
The MAX6841DUKD0+T implements a precision voltage comparator with ±2.5% threshold accuracy over -40°C to +85°C, referenced to a factory-set 0.788V internal bandgap. Its reset assertion logic responds to VCC falling below threshold or MR low assertion, holding RESET low for exactly 30ms (typ) after recovery - no external RC timing required.
It integrates a 20kΩ internal MR pullup, guarantees valid reset output down to VCC = 0.55V (active-low push-pull), and rejects transients ≤150ns at 100mV overdrive. The 5.7µA typical supply current enables operation in always-on monitoring paths without compromising battery life.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 0.788V ±2.5% - factory-trimmed for stable 0.8V-core supply monitoring without external calibration |
| Reset Timeout Period | 30ms (typ) - fixed internal timer ensures consistent µP initialization delay across temperature and voltage |
| Supply Voltage Range | +0.75V to +1.8V - supports modern sub-1V I/O and core rails including 0.8V, 0.9V, and 1.2V domains |
| Supply Current | 5.7µA (typ at 0.9V) - enables multi-year battery operation in maintenance-free portable sensors |
| Output Configuration | Active-low push-pull RESET - drives low without external pullup; compatible with standard CMOS µP reset inputs |
| VCC Transient Immunity | Rejects <150ns glitches at 100mV overdrive - eliminates false resets from switching noise on shared PCB power planes |
| Minimum Valid VCC | 0.55V - guarantees RESET remains asserted and functional even during deep brownout conditions |
Pinout & Package
Package: 5-pin SOT23-5 (lead-free, RoHS-compliant), footprint-compatible with industry-standard 5-lead SOT-23 layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (active-low) | Push-pull output that sinks current when asserted; directly interfaces µP reset pin without pullup resistor |
| 2 | GND | Ground reference for all internal comparators and reset timing circuitry |
| 3 | RESET (active-high) | Inverted complement of Pin 1; provides simultaneous active-high reset signal for auxiliary logic |
| 4 | MR (active-low) | Manual reset input with 20kΩ internal pullup to VCC; momentary switch to GND initiates reset without debounce circuitry |
| 5 | VCC | Monitored supply input; powers internal circuitry and serves as reference for reset threshold detection |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 0.788V (D suffix) with ±2.5% tolerance over full temperature range - eliminates need for external resistor divider or calibration |
| Fixed 30ms reset timeout | Internally generated, temperature-stable delay ensures µP receives minimum reset pulse width per JEDEC JESD8-12 specification |
| Ultra-low quiescent current | 5.7µA typical at 0.9V - reduces standby power in always-on monitoring circuits by >90% vs. discrete solutions |
| MR glitch rejection | 150ns minimum pulse width rejection - prevents accidental reset from ESD or board-level noise coupling |
| VCC valid-to-0.55V operation | Guaranteed RESET assertion integrity down to 0.55V - supports robust power-fail detection in Li-ion battery discharge profiles |
Applications
| Portable Medical Sensors | Industrial IoT Edge Nodes |
|---|---|
Use Scenario: Wearable glucose monitor operating from single-cell Li-ion (2.7–4.2V) with buck converter delivering 0.8V core voltage. IC Role / Device Role / Timing Role: Primary voltage supervisor asserting active-low reset to ARM Cortex-M0+ MCU during battery brownout. Use Value: 30ms guaranteed reset pulse ensures complete register initialization before firmware execution begins, preventing corrupted sensor data capture. |
Use Scenario: Wireless vibration sensor node powered by energy harvesting, using 0.9V LDO for ultra-low-power MCU. IC Role / Device Role / Timing Role: System-level power monitor detecting LDO dropout and triggering controlled shutdown sequence via MR-linked watchdog. Use Value: 5.7µA supply current extends usable runtime between harvest events; ±2.5% threshold accuracy maintains consistent trip point across temperature swings in uncontrolled environments. |
| Telecom Baseband Modules | Automotive Infotainment Subsystems |
Use Scenario: FPGA-based baseband processor in small-cell radio requiring precise 0.85V rail supervision with fast transient immunity. IC Role / Device Role / Timing Role: Dedicated reset generator for FPGA configuration logic, synchronized to 0.85V VCC rail with no external components. Use Value: 150ns glitch rejection prevents spurious resets from high-frequency switching noise on shared DC/DC output traces. |
Use Scenario: Infotainment SoC domain controller powered by 0.9V core rail, requiring fail-safe reset during cold-cranking (battery dip to 6V). IC Role / Device Role / Timing Role: Secondary supervisor monitoring post-regulator 0.9V supply, asserting reset if rail collapses below 0.788V. Use Value: Factory-trimmed 0.788V threshold matches SoC's 0.9V nominal rail with 12% margin, eliminating design iteration for margin tuning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6842DUKD0+T | Same 0.788V threshold and 30ms timeout, but features active-low open-drain RESET output instead of push-pull | Requires external pullup resistor; enables level-shifting or wired-OR reset bus configurations | Select when interfacing with bidirectional µP reset pins or multi-supply reset arbitration networks |
| TPS3123DQDBVR | 0.79V threshold, 200ms timeout, 1.2µA supply current, SOT23-5 package, but lacks active-high RESET complement | Higher timeout and lower current suit long-duration power-fail holdoff; no dual-output capability | Select when minimizing standby power is critical and only one reset polarity is needed |
Compared with MAX6841DUKD0+T, MAX6842DUKD0+T offers open-drain flexibility at the cost of added BOM component, while TPS3123DQDBVR trades dual outputs and faster timeout for superior ultra-low-power performance in infrequently powered systems.
Availability
MAX6841DUKD0+T is available at Aetrix Electronics and suitable for portable medical sensors, industrial IoT edge nodes, telecom baseband modules, and automotive infotainment subsystems requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MAX6841DUKD0+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, and interface applications in industrial, computing, and communications markets.
The MAX6841–MAX6845 family was engineered specifically for ultra-low-voltage microprocessor reset supervision in battery-constrained systems, emphasizing minimal footprint, sub-10µA quiescent current, and factory-calibrated accuracy without external components.
FAQ
What is the exact reset threshold voltage of the MAX6841DUKD0+T?
The MAX6841DUKD0+T has a factory-trimmed reset threshold of 0.788V with ±2.5% accuracy over -40°C to +85°C. This value is confirmed by the 'D' suffix in the part number per Maxim's Threshold Suffix Guide (Table 1), and applies to VCC falling conditions. The threshold is internally referenced and requires no external adjustment.
Does the MAX6841DUKD0+T provide both active-high and active-low reset outputs?
Yes, the MAX6841DUKD0+T provides two complementary reset outputs: Pin 1 is active-low push-pull RESET, and Pin 3 is active-high push-pull RESET. Both outputs are asserted/deasserted simultaneously, enabling direct connection to µPs requiring either polarity without level-shifting circuitry.
What is the reset timeout period for the MAX6841DUKD0+T, and is it adjustable?
The MAX6841DUKD0+T has a fixed 30ms typical reset timeout period, indicated by the 'D2' suffix in its ordering code. This timeout is internally generated and not adjustable via external components. It remains stable across temperature and supply voltage variations within the specified operating range.
Can the MAX6841DUKD0+T operate with a supply voltage below 1.0V?
Yes, the MAX6841DUKD0+T operates from +0.75V to +1.8V, making it fully functional at 0.8V and 0.9V supply rails. Its guaranteed reset assertion down to VCC = 0.55V ensures reliability during deep brownout conditions common in lithium battery discharge profiles.
Is a pullup resistor required for the RESET output of the MAX6841DUKD0+T?
No, the MAX6841DUKD0+T features an active-low push-pull RESET output (Pin 1) that actively drives low and high - no external pullup resistor is required. This simplifies layout and eliminates a potential source of leakage or noise coupling in compact portable designs.
MAX6841DUKD0+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:
- 0.788V
- 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
MAX6841DUKD0+T FAQ
1.How can I place an order for MAX6841DUKD0+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6841DUKD0+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 MAX6841DUKD0+T reliable?
The price and inventory of MAX6841DUKD0+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6841DUKD0+T is usually 5 days.
3.What payment methods are accepted for MAX6841DUKD0+T?
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4.How is shipping managed for MAX6841DUKD0+T?
MAX6841DUKD0+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6841DUKD0+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 MAX6841DUKD0+T?
For technical support, including MAX6841DUKD0+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6841DUKD0+T requirements.
6.How does Aetrix verify that MAX6841DUKD0+T is sourced from the original manufacturer or authorized distributors?
All MAX6841DUKD0+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 MAX6841DUKD0+T meets industry standards.
7.What is the process for return or replacement of MAX6841DUKD0+T?
All MAX6841DUKD0+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6841DUKD0+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 MAX6841DUKD0+T part is unused and in its original packaging.
Return procedure for MAX6841DUKD0+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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