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Analog Devices Inc./Maxim Integrated MAX6836VXSD3
- Part No.:
- MAX6836VXSD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6836VXSD3.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,501
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Product details
Overview
MAX6836VXSD3 from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit designed to monitor +1.575V supply rails in low-voltage digital systems. It asserts RESET when VCC drops below 1.575V (±2.5% over temperature) or MR is pulled low, maintains reset for 210ms after recovery, and draws only 9µA typical supply current at 1.8V - enabling reliable power-on reset in portable battery-powered controllers.
For engineers reviewing the MAX6836VXSD3 datasheet, MAX6836VXSD3 pinout, MAX6836VXSD3 application, or MAX6836VXSD3 equivalent, key selection criteria include its 210ms timeout period, 1.575V factory-set threshold, SC70-4 package compatibility, and push-pull active-high RESET output behavior under brownout conditions.
Technical Context
The MAX6836VXSD3 integrates a precision voltage comparator with ±2.5% threshold accuracy over -40°C to +85°C, a debounced manual reset input (MR) with internal 20kΩ pullup, and fixed 210ms reset timeout logic. Its reset assertion is immune to VCC transients <100ns wide at 100mV overdrive.
This device operates across VCC = 0.75V to 3.6V, guarantees valid RESET output down to VCC = 0.75V (active-high), and uses BiCMOS process technology with 681 transistors - optimized for ultra-low-power monitoring of 1.2V–1.8V core supplies without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.575V ±2.5% - precisely matches 1.6V nominal supply rails; eliminates need for external resistor divider |
| Reset Timeout Period | 210ms - ensures µP completes full power-up initialization before release; avoids premature execution |
| Supply Current | 9µA typ at 1.8V - enables multi-year operation on coin-cell batteries in always-on monitoring applications |
| Operating Voltage Range | 0.75V to 3.6V - supports valid reset assertion during deep brownout down to sub-1V VCC |
| Output Type | Push-pull active-high RESET - drives high without external pullup; compatible with CMOS inputs requiring asserted-HIGH reset |
| Manual Reset Input | Debounced MR with 20kΩ internal pullup - eliminates external RC debounce; accepts momentary switch to GND |
| VCC Transient Immunity | Rejects <100ns negative glitches at 100mV overdrive - prevents false resets in noisy power environments |
Pinout & Package
MAX6836VXSD3 is housed in a 4-pin SC70-4 package (2.0mm × 2.1mm, 0.65mm pitch), optimized for space-constrained portable designs. Pin 1 = GND, Pin 2 = RESET (push-pull active-high), Pin 3 = MR (debounced manual reset), Pin 4 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for all internal comparators and output stage; must be low-impedance connection |
| 2 | RESET | Push-pull active-high output; drives HIGH during reset assertion; sinks 150µA minimum when LOW |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC; 2µs minimum pulse width required |
| 4 | VCC | Supply and monitored voltage input; powers device and sets comparator reference; valid from 0.75V |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set 1.575V threshold | Eliminates calibration effort and external resistors; ensures consistent reset point across production lots |
| 210ms fixed timeout | Guarantees sufficient hold time for slow-ramping 1.5V/1.6V core supplies in FPGA and SoC power sequencing |
| Debounced MR input | Removes need for external RC filter or firmware debounce; supports direct switch-to-ground interface |
| 7.5µA to 16µA supply current | Enables >10-year battery life in maintenance-free IoT sensor nodes powered by CR2032 cells |
| SC70-4 footprint | Reduces PCB area by 60% vs. SOT-23; compatible with high-density layout requirements of handheld medical devices |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered glucose meter with ARM Cortex-M0+ MCU requiring deterministic reset during cold-start from 1.5V Li-SOCl₂ cell. IC Role / Device Role / Timing Role: Primary power-on reset supervisor asserting active-high RESET until 1.575V rail stabilizes and holds for 210ms. Use Value: Prevents firmware crash during marginal battery voltage; eliminates external reset IC and BOM cost. |
Use Scenario: DIN-rail mounted programmable logic controller with isolated 1.6V FPGA configuration supply. IC Role / Device Role / Timing Role: Dedicated voltage monitor for FPGA core rail; generates synchronized reset pulse upon brownout detection. Use Value: Ensures FPGA reconfiguration only after stable 1.6V supply; avoids partial bitstream loading errors. |
| Wearable Fitness Trackers | Smart Energy Meters |
Use Scenario: Ultra-thin wristband with integrated heart-rate sensor and BLE SoC operating from single 1.5V alkaline cell. IC Role / Device Role / Timing Role: Low-quiescent-current supervisor providing active-high reset signal compatible with SoC's native reset polarity. Use Value: Extends battery runtime by minimizing idle current; leverages push-pull output to avoid pullup resistor leakage. |
Use Scenario: ANSI C12.20-compliant electricity meter with dual 1.5V/3.3V supply domains and tamper-detection logic. IC Role / Device Role / Timing Role: Independent reset source for metrology ASIC; immune to 100ns EFT bursts on main supply rail. Use Value: Maintains measurement integrity during conducted EMI events; meets IEC 61000-4-4 Level 3 immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6836VXSD1 | 1.5ms reset timeout instead of 210ms; identical threshold (1.575V), package, and output type | Suitable for fast-boot MCUs where shorter reset hold time is acceptable | Select MAX6836VXSD1 if system boot sequence completes in <2ms; otherwise retain MAX6836VXSD3 for robust 210ms hold |
| MAX6833VXRD3 | SC70-3 package (no MR pin); same 1.575V threshold and 210ms timeout; push-pull active-high output | Used where manual reset is unnecessary and board space is extremely constrained | Choose MAX6836VXSD3 when MR functionality is required; use MAX6833VXRD3 only if MR is omitted and footprint must be minimized |
Compared with MAX6836VXSD1 and MAX6833VXRD3, the MAX6836VXSD3 uniquely combines 210ms timeout, debounced MR input, and SC70-4 packaging - making it optimal for portable systems needing both timing margin and field-service reset capability.
Availability
MAX6836VXSD3 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, wearable fitness trackers, smart energy meters, and battery-backed data loggers requiring stable component supply across extended product lifecycles.
Supply support for MAX6836VXSD3 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 interface applications - serving industrial, automotive, and communications markets since 1983.
The MAX6832–MAX6840 family was engineered specifically for ultra-low-voltage microprocessor supervision in space- and power-constrained systems, targeting 1.2V–1.8V supply domains in portable and battery-operated equipment.
FAQ
What is the exact reset threshold voltage of the MAX6836VXSD3 and how accurate is it over temperature?
The MAX6836VXSD3 has a factory-set reset threshold of 1.575V with ±2.5% accuracy over the full -40°C to +85°C operating range. This specification is guaranteed by design and verified across temperature extremes, ensuring reliable detection of 1.6V supply brownouts without calibration or trimming.
Does the MAX6836VXSD3 require an external pullup resistor on its RESET pin?
No, the MAX6836VXSD3 features a push-pull active-high RESET output and does not require an external pullup resistor. It actively drives HIGH during reset assertion and LOW otherwise, simplifying PCB layout and eliminating pullup leakage current that would impact battery life in portable applications using MAX6836VXSD3.
What is the function of the MR pin on the MAX6836VXSD3 and how should it be used?
The MR pin on MAX6836VXSD3 is a debounced active-low manual reset input with an internal 20kΩ pullup to VCC. To initiate a reset, pull MR to GND via a momentary switch; release to allow automatic timeout recovery. No external debounce circuitry is needed, and MR remains functional even when VCC is as low as 0.75V.
Can the MAX6836VXSD3 operate reliably when VCC falls below 1.0V?
Yes, the MAX6836VXSD3 guarantees valid active-high RESET output down to VCC = 0.75V. Below this level, reset behavior is not specified. Its ability to assert reset at sub-1V VCC makes MAX6836VXSD3 suitable for deep-brownout protection in systems powered by aging primary batteries or low-headroom DC/DC converters.
How does the 210ms reset timeout period of the MAX6836VXSD3 benefit system reliability?
The 210ms timeout ensures the MAX6836VXSD3 holds RESET active long enough for slow-ramping 1.5V–1.6V supplies (e.g., LDO outputs feeding FPGA cores or RF SoCs) to stabilize fully before releasing the processor. This prevents race conditions and firmware lockups that occur when reset is released prematurely - a critical reliability feature confirmed in MAX6836VXSD3 qualification testing.
MAX6836VXSD3 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:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6836VXSD3 FAQ
1.How can I place an order for MAX6836VXSD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6836VXSD3 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 MAX6836VXSD3 reliable?
The price and inventory of MAX6836VXSD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6836VXSD3 is usually 5 days.
3.What payment methods are accepted for MAX6836VXSD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6836VXSD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6836VXSD3?
MAX6836VXSD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6836VXSD3 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 MAX6836VXSD3?
For technical support, including MAX6836VXSD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6836VXSD3 requirements.
6.How does Aetrix verify that MAX6836VXSD3 is sourced from the original manufacturer or authorized distributors?
All MAX6836VXSD3 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 MAX6836VXSD3 meets industry standards.
7.What is the process for return or replacement of MAX6836VXSD3?
All MAX6836VXSD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6836VXSD3, 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 MAX6836VXSD3 part is unused and in its original packaging.
Return procedure for MAX6836VXSD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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