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Analog Devices Inc./Maxim Integrated MAX6833HXRD0
- Part No.:
- MAX6833HXRD0
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6833HXRD0.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,248
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Product details
Overview
The MAX6833HXRD0 from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit in SC70-3 package, designed to monitor +1.313V supply voltage with ±2.5% threshold accuracy over temperature and assert reset for 30ms after VCC recovery or manual reset deassertion. It draws only 7.5µA typical supply current and guarantees valid RESET output down to VCC = 0.75V, making it suitable for low-voltage portable systems requiring reliable power-on reset.
For engineers reviewing the MAX6833HXRD0 datasheet, MAX6833HXRD0 pinout, MAX6833HXRD0 application, or MAX6833HXRD0 equivalent, key selection criteria include its fixed 30ms timeout, factory-set 1.313V reset threshold, SC70-3 footprint compatibility with legacy MAX809/MAX671x series, and active-high push-pull output eliminating external pullup requirements.
Technical Context
This device implements a precision bandgap-based voltage comparator with hysteresis (0.75% of VTH) and a fixed 30ms monostable timeout circuit triggered by VCC falling below 1.313V or MR assertion. Its internal 20kΩ MR pullup enables direct switch connection without external components.
The push-pull active-high RESET output delivers VOH ≥ 0.8×VCC at ISOURCE = 10µA down to VCC = 0.85V and VOL ≤ 0.2×VCC at ISINK = 80µA, ensuring robust interfacing with modern low-voltage µPs. Immunity to VCC transients <100ns is achieved via comparator overdrive rejection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.313V ±2.5% over -40°C to +85°C - ensures accurate brownout detection for 1.3V-core systems |
| Reset Timeout Period | 30ms - provides sufficient hold time for µP initialization before release |
| Supply Current | 7.5µA typical at VCC = 1.2V - enables multi-year battery life in always-on monitoring |
| VCC Operating Range | 0.75V to 3.6V - supports operation during deep brownout and full rail conditions |
| RESET Output Type | Push-pull active-high - eliminates need for external pullup resistor and reduces BOM count |
| MR Input | Debounced, internally pulled up to VCC with 20kΩ - allows direct momentary switch connection |
| Package | SC70-3 - 1.25mm × 0.85mm footprint compatible with space-constrained portable PCBs |
Pinout & Package
MAX6833HXRD0 is housed in a 3-pin SC70 package (1.25mm × 0.85mm × 0.55mm height), optimized for high-density portable designs. Pin 1 is GND, Pin 2 is RESET (push-pull active-high), and Pin 3 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for all internal circuitry and reset comparator |
| 2 | RESET | Push-pull active-high output; drives HIGH during reset assertion, LOW otherwise |
| 3 | VCC | Supply input and monitored voltage rail; powers device and sets reset trip point |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set 1.313V threshold | Eliminates external resistor network and calibration effort for 1.3V system monitoring |
| 30ms fixed timeout | Guarantees µP reset hold time meets ARM Cortex-M and RISC-V bootloader timing requirements |
| 7.5µA supply current | Reduces quiescent power in battery-backed real-time clocks and sensor nodes by >50% vs. older supervisors |
| SC70-3 package | Enables placement adjacent to µP in <3mm² area-constrained wearable PCB layouts |
| MR debounce & pullup | Removes need for external RC filter or pullup, simplifying manual reset implementation |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Wearable ECG patch monitors battery voltage and asserts reset if cell drops below 1.3V during cold-weather operation. IC Role / Device Role / Timing Role: Voltage supervisor providing power-on reset and brownout protection for ultra-low-power ADC and BLE SoC. Use Value: 7.5µA quiescent current extends single-CR2032 battery life beyond 18 months while maintaining ±2.5% threshold accuracy across -20°C to +60°C. |
Use Scenario: DIN-rail mounted I/O module uses local 1.3V core supply; supervisor ensures FPGA config integrity during 24VDC field power fluctuations. IC Role / Device Role / Timing Role: Reset generator asserting 30ms active-high pulse to FPGA configuration reset pin on supply dip. Use Value: Push-pull output directly drives FPGA reset without level-shifting, and 0.75V VCC min operation prevents spurious resets during slow power ramp-up. |
| Automotive Body Control Units | Smart Home Hub Power Management |
|
Use Scenario: BCM microcontroller powered from buck converter regulated to 1.3V; supervisor detects undervoltage during load-dump recovery. IC Role / Device Role / Timing Role: System-level reset initiator that holds µC in reset until stable 1.3V rail is confirmed post-transient. Use Value: Immunity to <100ns VCC glitches avoids false resets during alternator switching noise, improving ASIL-B compliance confidence. |
Use Scenario: Voice-controlled hub enters deep sleep with 1.3V always-on rail; supervisor wakes host MCU only when rail stabilizes after AC/DC adapter reconnection. IC Role / Device Role / Timing Role: Power-good detector enabling wake-on-voltage for zero-power standby architecture. Use Value: SC70-3 size allows integration into tight space behind USB-C port, and 30ms timeout matches PMIC power-rail sequencing delays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SXRD3 | 1.6V reset threshold, 240ms timeout, same SC70-3 package and push-pull active-high output | Designed for 1.6V I/O rails; longer timeout suits slower µPs but may delay boot in fast-start systems | Select when monitoring higher-voltage rails where 1.313V threshold is insufficient |
| MAX6713XSD3 | 1.313V threshold, 30ms timeout, but 4-pin SC70-4 with MR input and no RESET-IN; push-pull active-high | Includes debounced MR input like MAX6833HXRD0 but occupies larger footprint and requires extra PCB pad | Choose if MR functionality is required and board layout allows 4-pin variant; otherwise MAX6833HXRD0 offers smaller size |
Compared with MAX809SXRD3 and MAX6713XSD3, the MAX6833HXRD0 uniquely combines 1.313V threshold, 30ms timeout, SC70-3 footprint, and MR support-enabling optimal fit for compact 1.3V-core embedded systems without layout or timing compromises.
Availability
MAX6833HXRD0 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, and automotive body control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6833HXRD0 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and computing applications.
The MAX6832–MAX6840 family was designed specifically for ultra-low-voltage microprocessor supervision in battery-powered and energy-sensitive systems, emphasizing minimal quiescent current, small footprint, and precise threshold accuracy.
FAQ
What is the exact reset threshold voltage of the MAX6833HXRD0 and how stable is it over temperature?
The MAX6833HXRD0 has a factory-set reset threshold of 1.313V 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 consistent brownout detection for 1.3V-core systems without calibration.
Does the MAX6833HXRD0 require an external pullup resistor on its RESET pin?
No, the MAX6833HXRD0 features a push-pull active-high RESET output, so no external pullup resistor is needed. The output actively drives HIGH during reset assertion and LOW otherwise, simplifying interface to µP reset inputs and reducing BOM count compared to open-drain alternatives.
What is the minimum VCC voltage at which the MAX6833HXRD0 guarantees valid RESET output operation?
The MAX6833HXRD0 guarantees valid RESET output down to VCC = 0.75V for the active-high push-pull configuration. Below this voltage, output drive capability degrades; however, the device remains functional and will assert reset as VCC falls through the 1.313V threshold.
Can the MAX6833HXRD0 be used with a manual reset switch, and what is required for proper interfacing?
Yes, the MAX6833HXRD0 includes a debounced MR input with an internal 20kΩ pullup to VCC. A normally open momentary switch connected between MR and GND is sufficient-no external components are required. Leaving MR unconnected defaults to inactive (pulled high).
How does the 30ms reset timeout period of the MAX6833HXRD0 compare to other members of the MAX6832–MAX6840 family?
The MAX6833HXRD0 uses the D2 suffix, corresponding to a 30ms reset timeout period. Other variants offer 70µs (D0), 1.5ms (D1), 210ms (D3), or 1.68s (D4). The 30ms value balances µP initialization time and system responsiveness, matching common bootloader requirements for Cortex-M0/M3 devices.
MAX6833HXRD0 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:
- 1.575V
- 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
MAX6833HXRD0 FAQ
1.How can I place an order for MAX6833HXRD0 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6833HXRD0 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 MAX6833HXRD0 reliable?
The price and inventory of MAX6833HXRD0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6833HXRD0 is usually 5 days.
3.What payment methods are accepted for MAX6833HXRD0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6833HXRD0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6833HXRD0?
MAX6833HXRD0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6833HXRD0 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 MAX6833HXRD0?
For technical support, including MAX6833HXRD0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6833HXRD0 requirements.
6.How does Aetrix verify that MAX6833HXRD0 is sourced from the original manufacturer or authorized distributors?
All MAX6833HXRD0 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 MAX6833HXRD0 meets industry standards.
7.What is the process for return or replacement of MAX6833HXRD0?
All MAX6833HXRD0 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6833HXRD0, 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 MAX6833HXRD0 part is unused and in its original packaging.
Return procedure for MAX6833HXRD0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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