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Analog Devices Inc./Maxim Integrated MAX6836WXSD1-T
- Part No.:
- MAX6836WXSD1-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6836WXSD1-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6836WXSD1-T from Maxim Integrated is a push-pull active-high microprocessor reset circuit in SC70-4 package, designed to monitor +1.665V supply rails with ±2.5% threshold accuracy over temperature and assert reset for 1.5ms after VCC recovery or manual reset release. It features debounced MR input, 7.5µA typical supply current, and guaranteed RESET validity down to VCC = 0.75V - ideal for low-voltage portable µP systems.
For engineers reviewing the MAX6836WXSD1-T datasheet, MAX6836WXSD1-T pinout, MAX6836WXSD1-T application, or MAX6836WXSD1-T equivalent, this device serves as a precision voltage supervisor for 1.6V-class core supplies in battery-powered controllers, embedded instrumentation, and space-constrained IoT endpoints requiring stable brownout detection and manual reset capability.
Technical Context
The MAX6836WXSD1-T implements a precision bandgap-based voltage comparator with hysteresis (0.75% of VTH) to reject fast VCC transients up to 100ns, ensuring immunity to short negative glitches. Its internal 20kΩ MR pullup enables direct switch-to-ground connection without external components.
This variant belongs to the MAX6832–MAX6840 family's push-pull active-high subgroup (MAX6833/MAX6836/MAX6839), uses D1 timeout (1.5ms), and features factory-set 1.665V reset threshold (W suffix) - optimized for +1.6V nominal core supplies in modern low-power SoC applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.665V ±2.5% over -40°C to +85°C - ensures reliable trip point for 1.6V core supplies across industrial temperature range |
| Reset Timeout Period | 1.5ms (D1 option) - provides sufficient hold time for µP initialization after power recovery |
| Supply Current | 7.5µA typical at VCC = 1.2V - enables multi-year battery life in always-on monitoring circuits |
| RESET Output Type | Push-pull active-high - drives high without external pullup, compatible with µP reset inputs requiring active-HIGH assertion |
| VCC Operating Range | 0.75V to 3.6V - supports valid reset operation down to 0.75V, enabling detection during deep brownout |
| MR Input | Debounced, internal 20kΩ pullup to VCC - eliminates need for external RC debounce network |
| Package | SC70-4 (2.0mm × 2.1mm) - ultra-compact footprint for space-critical portable PCB layouts |
Pinout & Package
MAX6836WXSD1-T is housed in a 4-pin SC70 package (2.0mm × 2.1mm, 0.65mm pitch), with GND on Pin 1, VCC on Pin 4, RESET on Pin 2, and MR on Pin 3 - fully compatible with standard SC70-4 land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for all internal circuitry and reset comparator; must be connected to system ground plane |
| 2 | RESET | Push-pull active-high output; drives HIGH during reset assertion, sinks current when deasserted - no external pullup required |
| 3 | MR | Active-low manual reset input with internal 20kΩ pullup to VCC; momentary switch to GND initiates reset without external components |
| 4 | VCC | Supply and monitored voltage input; powers device and sets reset threshold reference - operates from 0.75V to 3.6V |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set 1.665V threshold | Eliminates external resistor networks and calibration, reducing BOM count and layout area for 1.6V core monitoring |
| 1.5ms fixed reset timeout | Guarantees µP reset pulse width meets ARM Cortex-M and RISC-V boot requirements without timing margin uncertainty |
| 7.5µA supply current | Enables integration into always-on wake-up supervisors for battery-backed real-time clocks and sensor nodes |
| Debounced MR input | Supports direct mechanical switch interface with no external filtering, reducing component count and board space |
| ±2.5% threshold accuracy over temp | Ensures consistent brownout detection across -40°C to +85°C without derating or guard-banding in industrial designs |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Wearable ECG patch monitoring battery voltage and asserting reset during low-battery shutdown. IC Role / Device Role / Timing Role: Voltage supervisor detecting 1.6V core rail collapse and generating 1.5ms active-HIGH reset pulse to halt MCU execution before data corruption. Use Value: Prevents flash write corruption during brownout by guaranteeing reset assertion until VCC stabilizes above 1.665V with 1.5ms hold time. |
Use Scenario: Remote analog input module powered from isolated 1.6V DC-DC converter in harsh factory environment. IC Role / Device Role / Timing Role: Primary reset controller monitoring local 1.6V logic supply, with MR tied to front-panel reset button for field service. Use Value: Debounced MR input enables reliable manual reset without external RC network, reducing failure points in long-life industrial deployments. |
| Smart Meter Communication ICs | Low-Power Edge AI Accelerators |
|
Use Scenario: NB-IoT modem subsystem powered from 1.6V LDO, requiring deterministic reset during grid voltage sags. IC Role / Device Role / Timing Role: Brownout detector asserting active-HIGH reset to modem's dedicated reset pin during VCC dip below 1.665V. Use Value: Push-pull output drives reset line directly without pullup, eliminating leakage path and simplifying level-shifting in mixed-voltage domains. |
Use Scenario: TinyML inference engine on 1.6V core rail, where premature wake-up from deep sleep must be prevented by precise voltage validation. IC Role / Device Role / Timing Role: Power-good monitor validating stable 1.6V supply before releasing accelerator from hardware reset state. Use Value: 0.75V minimum VCC operation allows reset assertion even during severe brownout, preventing illegal state transitions in SRAM-based accelerators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6381XR22-T | Fixed 2.2V threshold, 1.6s timeout, SC70-3 package, active-low push-pull output | Designed for higher-voltage I/O rails; lacks MR input and adjustable timeout | Select when supervising 2.2V supplies and board space permits SC70-3; not suitable for 1.6V core monitoring |
| TPS3808G16DBVR | 1.6V threshold, 200ms timeout, SOT-23-5 package, active-low open-drain output, 1.5µA quiescent current | Requires external pullup; longer timeout; lower IQ but no MR debounce | Choose for ultra-low-power applications where 200ms reset hold suffices and MR functionality is handled externally |
Compared with MAX6836WXSD1-T, MAX6381XR22-T targets higher supply rails and omits manual reset, while TPS3808G16DBVR trades MR integration and precise 1.5ms timing for lower IQ and open-drain flexibility - making MAX6836WXSD1-T optimal for compact 1.6V µP systems needing debounced MR and deterministic reset duration.
Availability
MAX6836WXSD1-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, and smart meter communication ICs requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6836WXSD1-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, automotive, and computing markets.
The MAX6832–MAX6840 product line delivers ultra-low-voltage reset supervision for sub-1.8V digital systems, targeting battery-powered and energy-harvesting applications where size, accuracy, and low IQ are critical.
FAQ
What is the exact reset threshold voltage of the MAX6836WXSD1-T?
The MAX6836WXSD1-T has a factory-set reset threshold of 1.665V with ±2.5% accuracy over the full -40°C to +85°C operating temperature range. This value is defined by the 'W' suffix in the part number and is guaranteed by design per Maxim's Electrical Characteristics table. The MAX6836WXSD1-T uses this precise threshold to supervise +1.6V nominal core supplies in low-voltage microprocessor systems.
Does the MAX6836WXSD1-T require an external pullup resistor on its RESET pin?
No, the MAX6836WXSD1-T features a push-pull active-high RESET output, meaning it actively drives HIGH during reset assertion and sinks current when deasserted - no external pullup resistor is needed. This simplifies PCB layout and eliminates potential leakage paths. The MAX6836WXSD1-T's internal output stage is rated to drive 150µA at VCC ≥ 1.5V while maintaining VOH ≥ 0.8 × VCC.
What is the function of the MR pin on the MAX6836WXSD1-T?
The MR (Manual Reset) pin on the MAX6836WXSD1-T is an active-low, debounced input with an internal 20kΩ pullup resistor to VCC. Pulling MR low forces a reset regardless of VCC level, and reset remains asserted for the full 1.5ms timeout after MR returns high. This allows direct connection of a momentary switch to ground without external debounce components. The MAX6836WXSD1-T leverages this feature for field-service reset in industrial and portable equipment.
Can the MAX6836WXSD1-T operate reliably below 1.0V supply voltage?
Yes, the MAX6836WXSD1-T guarantees valid reset operation down to VCC = 0.75V for active-high output functionality, and its reset comparator remains functional as low as VCC = 0.55V. This enables brownout detection during deep voltage sag conditions. The MAX6836WXSD1-T maintains ±2.5% threshold accuracy and 1.5ms timeout integrity across its full 0.75V–3.6V operating range, supporting robust low-voltage system design.
What timeout period is implemented in the MAX6836WXSD1-T?
The MAX6836WXSD1-T implements the D1 timeout option, providing a fixed 1.5ms reset active period after VCC rises above the 1.665V threshold or after the MR input is released. This value is encoded in the '1' digit of the suffix 'SD1', and is confirmed in Table 2 of the datasheet. The MAX6836WXSD1-T uses this precise 1.5ms duration to meet boot timing requirements of modern low-power microcontrollers without undershoot or excessive hold time.
MAX6836WXSD1-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.665V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6836WXSD1-T FAQ
1.How can I place an order for MAX6836WXSD1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6836WXSD1-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 MAX6836WXSD1-T reliable?
The price and inventory of MAX6836WXSD1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6836WXSD1-T is usually 5 days.
3.What payment methods are accepted for MAX6836WXSD1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6836WXSD1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6836WXSD1-T?
MAX6836WXSD1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6836WXSD1-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 MAX6836WXSD1-T?
For technical support, including MAX6836WXSD1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6836WXSD1-T requirements.
6.How does Aetrix verify that MAX6836WXSD1-T is sourced from the original manufacturer or authorized distributors?
All MAX6836WXSD1-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 MAX6836WXSD1-T meets industry standards.
7.What is the process for return or replacement of MAX6836WXSD1-T?
All MAX6836WXSD1-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6836WXSD1-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 MAX6836WXSD1-T part is unused and in its original packaging.
Return procedure for MAX6836WXSD1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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