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Analog Devices Inc./Maxim Integrated MAX6832FXRD3
- Part No.:
- MAX6832FXRD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6832FXRD3.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:675
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Product details
Overview
MAX6832FXRD3 from Maxim Integrated is a low-voltage microprocessor supervisory circuit in SC70-3 package, featuring 1.050V factory-set reset threshold, 210ms active timeout period (D3 suffix), and push-pull active-low RESET output. It monitors +1.2V to +1.8V supplies, asserts reset during brownout or manual reset, and guarantees valid reset down to VCC = 0.55V - ideal for portable battery-powered µP systems requiring reliable power-on reset.
For engineers reviewing the MAX6832FXRD3 datasheet, MAX6832FXRD3 pinout, MAX6832FXRD3 application, or MAX6832FXRD3 equivalent, this device serves as a space-constrained, ultra-low-quiescent-current (7.5µA typ) voltage detector and reset generator with ±2.5% threshold accuracy over temperature and immunity to short VCC transients.
Technical Context
The MAX6832FXRD3 implements a precision bandgap-based voltage comparator with 444mV internal reference, comparing VCC against a trimmed 1.050V threshold (F suffix). Its reset assertion logic includes fixed 210ms timeout after VCC recovery and built-in hysteresis (0.75% of VTH) to prevent chatter during slow-rising supply conditions.
This variant lacks MR input and RESET-IN pins - it is a 3-pin SC70-3 device with dedicated GND, VCC, and active-low push-pull RESET terminals. Its reset output remains functional down to VCC = 0.55V, and it draws only 7.5µA at 1.2V, enabling use in always-on subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.050V ±2.5% over -40°C to +85°C - ensures reliable reset assertion for 1.2V core supplies with margin against noise and drift |
| Timeout Period | 210ms - provides sufficient hold time for µP initialization and peripheral stabilization after power-up or brownout recovery |
| Supply Current | 7.5µA typical at 1.2V - enables multi-year battery life in coin-cell–powered IoT sensors and wearables |
| Operating Voltage Range | +0.55V to +3.6V - supports operation during deep brownout and allows valid reset assertion even as VCC collapses |
| Output Type | Push-pull active-low RESET - drives CMOS inputs directly without external pullup, simplifying PCB layout and reducing BOM count |
| Package | SC70-3 (2.0mm × 2.1mm × 0.95mm) - delivers ultra-compact footprint for space-constrained portable designs |
| Reset Valid Down To | VCC = 0.55V - guarantees deterministic reset state while most µPs remain nonfunctional below 0.6V |
Pinout & Package
MAX6832FXRD3 uses the 3-pin SC70-3 package (pin pitch: 0.65mm), optimized for high-density portable PCBs. The package is RoHS-compliant and available in leaded and lead-free variants (-T and +T).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be connected to system ground plane for stable reset timing |
| 2 | RESET | Active-low push-pull output; sinks current when asserted (low), sources current when deasserted (high); interfaces directly with µP reset input |
| 3 | VCC | Monitored supply input and power source; also used as reference for internal voltage detection; requires local 0.1µF bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 1.050V threshold | Eliminates external resistor networks and calibration steps, reducing design cycle time and component count |
| 210ms fixed timeout | Matches typical µP boot sequence requirements without software configuration or external timing components |
| 7.5µA quiescent current | Enables integration into always-on monitoring circuits without compromising battery runtime in portable devices |
| ±2.5% threshold accuracy over temp | Ensures consistent reset behavior across industrial temperature range without derating or guardbanding |
| Immunity to <100ns VCC glitches | Prevents spurious resets in electrically noisy environments such as motor-driven or switching-power-supply systems |
Applications
| Battery-Powered Wearables | Low-Voltage Microcontroller Systems |
|---|---|
Use Scenario: A fitness tracker powered by a 1.2V Li-SOCl₂ coin cell must maintain accurate sensor sampling and BLE transmission during voltage sag. IC Role / Device Role / Timing Role: MAX6832FXRD3 monitors the 1.2V rail and asserts reset if voltage drops below 1.050V, preventing corrupted firmware execution during battery depletion. Use Value: Its 7.5µA supply current extends battery life beyond 3 years, while 210ms timeout ensures full µP initialization before sensor readout begins. |
Use Scenario: An industrial sensor node uses a 1.35V core supply derived from a DC/DC converter; transient load steps cause brief brownouts. IC Role / Device Role / Timing Role: MAX6832FXRD3 acts as a dedicated hardware reset supervisor, asserting RESET until VCC recovers and holds for 210ms to guarantee clean µC boot. Use Value: ±2.5% threshold tolerance prevents false resets during normal 1.35V ±3% regulation, and immunity to sub-100ns transients avoids nuisance triggers. |
| Portable Medical Devices | Energy-Harvesting Edge Nodes |
Use Scenario: A handheld glucose meter operates from a single 1.5V alkaline cell; voltage declines gradually during use, risking firmware lockup. IC Role / Device Role / Timing Role: MAX6832FXRD3 continuously monitors VCC and forces controlled reset before the µP enters undefined states below 1.050V. Use Value: Valid reset output down to VCC = 0.55V ensures deterministic behavior even during final battery discharge phase, improving device safety compliance. |
Use Scenario: A solar-harvested environmental sensor wakes periodically; its 1.2V storage capacitor may dip below safe operating voltage between charge cycles. IC Role / Device Role / Timing Role: MAX6832FXRD3 detects capacitor voltage collapse and holds µP in reset until sufficient charge accumulates to sustain full operation. Use Value: SC70-3 footprint minimizes board area on ultra-small PCBs, and 210ms timeout aligns with typical energy-harvesting charge accumulation windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3 | Same 3-pin SC70 package, 1.050V threshold, but 240ms timeout and 10µA ICC | Higher supply current and longer timeout reduce suitability for ultra-low-power wake-up timing | Select MAX6832FXRD3 when 210ms timing and 7.5µA current are critical for battery budget |
| TPS3123E10DBVR | 3-pin SOT-23, 1.0V threshold, 200ms timeout, 4.5µA ICC, but no VCC = 0.55V guaranteed reset validity | Lacks guaranteed reset functionality below 0.8V, limiting use in deep-brownout scenarios | Choose MAX6832FXRD3 where deterministic reset down to 0.55V is required for safety-critical shutdown |
Compared with MAX809TRD3 and TPS3123E10DBVR, the MAX6832FXRD3 offers tighter threshold accuracy (±2.5% vs ±3.5%), lower quiescent current, and guaranteed reset validity at lower VCC - making it optimal for long-life, low-voltage portable systems demanding precise brownout response.
Availability
MAX6832FXRD3 is available at Aetrix Electronics and suitable for battery-powered wearables, low-voltage microcontroller systems, and portable medical devices requiring stable component supply and long-term lifecycle support.
Supply support for MAX6832FXRD3 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, with emphasis on high-reliability, low-power solutions.
The MAX6832–MAX6840 family was developed specifically for ultra-low-voltage microprocessor supervision in portable and battery-constrained systems, addressing the need for sub-1.2V reset capability and nanoamp-level quiescent current.
FAQ
What is the exact reset threshold voltage of the MAX6832FXRD3?
The MAX6832FXRD3 has a factory-set reset threshold of 1.050V, specified 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 (VTH)" for suffix F, and applies directly to the MAX6832FXRD3 without adjustment or external components.
Does the MAX6832FXRD3 include a manual reset (MR) input?
No, the MAX6832FXRD3 does not include a manual reset input. As a 3-pin SC70-3 variant in the MAX6832 series, it features only GND, VCC, and RESET pins. Manual reset capability is present only on 4-pin versions like MAX6835/MAX6836/MAX6837, which add an MR terminal.
What is the reset timeout period for the MAX6832FXRD3?
The MAX6832FXRD3 has a fixed reset active timeout period of 210ms, indicated by the "D3" suffix in its part number. This duration is guaranteed over temperature and ensures sufficient hold time for microprocessor initialization after power-up or brownout recovery.
Can the MAX6832FXRD3 operate with a 1.2V supply?
Yes, the MAX6832FXRD3 is explicitly designed for 1.2V to 1.8V systems. Its 1.050V reset threshold provides appropriate margin above 1.2V nominal supply, and it functions correctly down to VCC = 0.55V - ensuring robust operation even as the 1.2V rail sags during battery discharge.
Is the RESET output of the MAX6832FXRD3 push-pull or open-drain?
The MAX6832FXRD3 features a push-pull active-low RESET output, as confirmed by its placement in the MAX6832/MAX6835/MAX6838 group in the datasheet. This eliminates the need for an external pullup resistor and allows direct interfacing with standard CMOS µP reset inputs.
MAX6832FXRD3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.05V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6832FXRD3 FAQ
1.How can I place an order for MAX6832FXRD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6832FXRD3 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 MAX6832FXRD3 reliable?
The price and inventory of MAX6832FXRD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6832FXRD3 is usually 5 days.
3.What payment methods are accepted for MAX6832FXRD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6832FXRD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6832FXRD3?
MAX6832FXRD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6832FXRD3 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 MAX6832FXRD3?
For technical support, including MAX6832FXRD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6832FXRD3 requirements.
6.How does Aetrix verify that MAX6832FXRD3 is sourced from the original manufacturer or authorized distributors?
All MAX6832FXRD3 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 MAX6832FXRD3 meets industry standards.
7.What is the process for return or replacement of MAX6832FXRD3?
All MAX6832FXRD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6832FXRD3, 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 MAX6832FXRD3 part is unused and in its original packaging.
Return procedure for MAX6832FXRD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6832FXRD3 Tags
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