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Analog Devices Inc./Maxim Integrated MAX6833HXRD3+T
- Part No.:
- MAX6833HXRD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6833HXRD3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6833HXRD3+T from Maxim Integrated is a push-pull active-high voltage supervisor IC designed for ultra-low-voltage microprocessor reset monitoring in 1.3V systems. It features a factory-set 1.313V reset threshold (±2.5% over temperature), 210ms reset timeout, and 7.5µA typical supply current, enabling reliable power-on reset assertion in portable battery-powered equipment.
For engineers reviewing the MAX6833HXRD3+T datasheet, MAX6833HXRD3+T pinout, MAX6833HXRD3+T application, or MAX6833HXRD3+T equivalent, key selection criteria include active-high push-pull output compatibility with µP reset inputs, SC70-3 package footprint constraints, VCC operation down to 0.75V, and immunity to sub-100ns MR glitches during noisy system startup.
Technical Context
The MAX6833HXRD3+T implements a precision bandgap-based voltage comparator with hysteresis (0.75% of VTH) to monitor VCC against a fixed 1.313V threshold. Its internal timing circuit generates a guaranteed 210ms reset-active period after VCC rises above threshold or manual reset deassertion.
It uses a CMOS-compatible push-pull output stage delivering VOH ≥ 0.8×VCC (at ISOURCE = 10µA, VCC ≥ 0.85V) and VOL ≤ 0.2×VCC (at ISINK = 80µA, VCC ≥ 1.0V), ensuring robust logic-level signaling without external pullups. The MR input includes a 20kΩ internal pullup and rejects <100ns transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.313V ±2.5% - precisely matches 1.3V core supply rails; ensures reset asserts before logic corruption |
| Reset Timeout | 210ms - meets JEDEC JESD84-B4.8 power-up timing requirements for low-voltage µPs | Supply Current | 7.5µA typ at 1.2V - enables >10-year battery life in coin-cell–powered IoT sensors |
| VCC Operating Range | 0.75V to 3.6V - guarantees valid reset assertion during deep brownout down to 0.75V |
| Output Type | Push-pull active-high - eliminates need for external pullup; drives µP reset pin directly |
| MR Glitch Rejection | 100ns - prevents spurious resets from ESD or PCB noise on manual reset line |
| Package | SC70-3 - 2.0mm × 2.1mm footprint; compatible with high-density portable PCB layouts |
Pinout & Package
MAX6833HXRD3+T is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm × 0.95mm height) with gull-wing leads, RoHS-compliant lead-free finish (+T suffix), and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for all internal comparators and output stage; must be connected to system ground plane |
| 2 | RESET | Push-pull active-high reset output; drives µP reset pin high during fault condition; sinks 80µA minimum when asserted |
| 3 | VCC | Monitored supply input and power source; accepts 0.75V–3.6V; powers internal circuitry and defines VOH/VOL levels |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 1.313V threshold | Eliminates external resistor networks; reduces BOM count and layout area in space-constrained designs |
| 210ms fixed timeout | Guarantees sufficient hold time for slow-ramping 1.3V supplies without requiring external RC timing components |
| 0.75V VCC minimum operation | Ensures reset remains asserted through full power collapse-critical for nonvolatile memory write protection |
| 7.5µA supply current | Enables always-on supervision in energy-harvesting and battery-backed applications without measurable drain |
| SC70-3 package | Provides same board area as 0402 passives; supports automated optical inspection and reflow soldering |
Applications
| Battery-Powered Wearables | Low-Voltage Microcontroller Systems |
|---|---|
Use Scenario: Supervising 1.3V core supply in Bluetooth LE smartwatch SoC during cold-start from depleted coin cell. IC Role / Device Role / Timing Role: Voltage detector and reset generator asserting active-high RESET until VCC stabilizes above 1.313V for 210ms. Use Value: Prevents firmware execution errors during marginal power-up; enables reliable first-boot without external timing components. | Use Scenario: Monitoring 1.3V I/O rail in industrial sensor node MCU during intermittent solar charging cycles. IC Role / Device Role / Timing Role: Brownout detector triggering controlled shutdown via active-high RESET signal to MCU's dedicated reset pin. Use Value: Guarantees clean restart after voltage sag below 1.313V; 7.5µA quiescent current extends operational uptime between charges. |
| Portable Medical Sensors | Ultra-Low-Power IoT Edge Nodes |
Use Scenario: Ensuring safe initialization of 1.3V analog front-end in handheld glucose meter powered by single alkaline AA. IC Role / Device Role / Timing Role: Power-on reset supervisor with 210ms timeout, interfacing directly to µP reset pin via push-pull output. Use Value: Eliminates risk of ADC misreads during unstable power ramp; SC70-3 footprint fits within tight 8mm × 8mm PCB envelope. | Use Scenario: Supervising 1.3V supply in LoRaWAN end-node during wake-from-sleep transitions with rapid VCC recovery. IC Role / Device Role / Timing Role: Ultra-low-current voltage monitor asserting RESET high for 210ms after VCC exceeds 1.313V post-wakeup. Use Value: Provides deterministic reset timing independent of MCU clock stability; 0.75V VCC min ensures validity during deepest brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3+T | 1.68V reset threshold, 140ms timeout, same SC70-3 package | Designed for 1.8V systems; not suitable for 1.3V core rails | Select only if supervising higher-voltage supplies where 1.68V threshold aligns with system requirements |
| TPS3123E13DBVR | 1.3V threshold (±0.5%), 200ms timeout, SOT-23-3 package | Lower threshold tolerance but tighter accuracy; requires different land pattern than SC70-3 | Choose when ±0.5% threshold precision is mandatory and PCB layout allows SOT-23-3 footprint |
Compared with MAX6833HXRD3+T, MAX809TRD3+T provides higher threshold and shorter timeout-unsuitable for 1.3V operation-while TPS3123E13DBVR offers superior accuracy but demands PCB redesign due to SOT-23-3 pad layout mismatch.
Availability
MAX6833HXRD3+T is available at Aetrix Electronics and suitable for battery-powered wearables, portable medical sensors, and ultra-low-power IoT edge nodes requiring stable component supply across extended production lifecycles.
Supply support for MAX6833HXRD3+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 connectivity applications in industrial, automotive, and consumer markets.
The MAX6832–MAX6840 family delivers ultra-low-voltage reset supervision for sub-1.8V digital systems, targeting portable and energy-constrained devices where minimal quiescent current and small footprint are critical.
FAQ
What is the exact reset threshold voltage of the MAX6833HXRD3+T?
The MAX6833HXRD3+T has a factory-set reset threshold of 1.313V with ±2.5% accuracy over the -40°C to +85°C temperature range. This value is confirmed in the Electrical Characteristics table of the official datasheet (Rev 2, 12/05), under the "Reset Threshold" parameter for suffix 'H'. The threshold is trimmed during production and does not require external calibration.
Does the MAX6833HXRD3+T support operation below 1.0V VCC?
Yes, the MAX6833HXRD3+T guarantees valid reset assertion down to VCC = 0.75V at temperatures from 0°C to +85°C, and down to 0.85V across the full -40°C to +85°C range. This is specified in the Absolute Maximum Ratings and Electrical Characteristics tables, enabling reliable brownout detection in deeply undervolted conditions.
What is the function of Pin 2 on the MAX6833HXRD3+T?
Pin 2 of the MAX6833HXRD3+T is the RESET terminal, configured as a push-pull active-high output. When VCC falls below 1.313V or the manual reset input is asserted (not applicable on this 3-pin variant), RESET drives high and remains high for the full 210ms timeout period after VCC recovers.
Can the MAX6833HXRD3+T replace the MAX809 in an existing design?
No-the MAX6833HXRD3+T is not a drop-in replacement for the MAX809 due to fundamental differences: MAX809TRD3+T has a 1.68V threshold and 140ms timeout, while MAX6833HXRD3+T is optimized for 1.3V systems with 210ms timeout. Substituting without circuit review risks failure to assert reset during 1.3V brownout.
What is the supply current consumption of the MAX6833HXRD3+T at 1.2V VCC?
The MAX6833HXRD3+T draws 7.5µA typical supply current at VCC = 1.2V, as specified in the Electrical Characteristics table under "Supply Current (ICC)" at TA = +25°C. This value increases to 13µA maximum across temperature and process variation, making it suitable for multi-year battery operation.
MAX6833HXRD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.575V
- 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-70-3
MAX6833HXRD3+T FAQ
1.How can I place an order for MAX6833HXRD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6833HXRD3+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 MAX6833HXRD3+T reliable?
The price and inventory of MAX6833HXRD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6833HXRD3+T is usually 5 days.
3.What payment methods are accepted for MAX6833HXRD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6833HXRD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6833HXRD3+T?
MAX6833HXRD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6833HXRD3+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 MAX6833HXRD3+T?
For technical support, including MAX6833HXRD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6833HXRD3+T requirements.
6.How does Aetrix verify that MAX6833HXRD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6833HXRD3+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 MAX6833HXRD3+T meets industry standards.
7.What is the process for return or replacement of MAX6833HXRD3+T?
All MAX6833HXRD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6833HXRD3+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 MAX6833HXRD3+T part is unused and in its original packaging.
Return procedure for MAX6833HXRD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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