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Analog Devices Inc./Maxim Integrated MAX6833VXRD0
- Part No.:
- MAX6833VXRD0
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6833VXRD0.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,240
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Product details
Overview
The MAX6833VXRD0 from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit designed to monitor +1.575V supply rails in ultra-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 70µs after recovery, and draws only 7.5µA typical supply current-enabling reliable power-on reset in portable battery-powered controllers.
For engineers reviewing the MAX6833VXRD0 datasheet, MAX6833VXRD0 pinout, MAX6833VXRD0 application, or MAX6833VXRD0 equivalent, key selection criteria include its SC70-3 package, 1.575V fixed reset threshold, 70µs timeout (D0 suffix), guaranteed RESET validity down to VCC = 0.75V, and compatibility with manual reset and brownout immunity requirements.
Technical Context
This device implements a precision bandgap-based voltage comparator with hysteresis (0.75% of VTH) and a fixed 70µs timeout monostable circuit. Its push-pull active-high RESET output drives directly into CMOS inputs without external pullup, and the internal 20kΩ MR pullup eliminates external biasing.
The MAX6833VXRD0 operates across VCC = 0.75V to 3.6V, with reset assertion guaranteed down to VCC = 0.75V and full functionality maintained at 1.575V nominal supply. It rejects transients ≤100ns on MR and ignores fast VCC glitches due to built-in noise immunity circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.575V ±2.5% over -40°C to +85°C - ensures accurate trip point for 1.6V-core systems |
| Timeout Period | 70µs - minimum valid reset pulse width for modern µP reset inputs |
| Supply Current | 7.5µA typical at 1.2V - enables multi-year battery life in always-on monitoring |
| Operating Voltage Range | 0.75V to 3.6V - supports operation during deep brownout and post-power-down states |
| 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 (20kΩ) - allows direct switch-to-ground connection without external RC |
| VCC Immunity | Immune to VCC transients <100ns - prevents false resets in noisy power environments |
Pinout & Package
MAX6833VXRD0 is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm × 0.95mm), optimized for space-constrained portable designs.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for all internal circuitry and reset comparator |
| 2 | RESET | Push-pull active-high output - drives high (≥0.8×VCC) when asserted, low (<0.2×VCC) when deasserted |
| 3 | VCC | Supply input and monitored voltage rail - powers device and serves as reference for reset detection |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set 1.575V threshold | Eliminates external resistor divider and calibration, reducing design time and component count |
| 7.5µA supply current | Enables continuous supervision in energy-harvesting and coin-cell applications without measurable battery drain |
| SC70-3 footprint | Reduces PCB area by >50% vs. SOT23-3 while maintaining hand-solderability and reflow compatibility |
| Guaranteed RESET validity to 0.75V VCC | Ensures deterministic reset behavior during critical low-voltage power collapse, preventing µP lockup |
| MR debounce and 20kΩ internal pullup | Supports direct mechanical switch interface with no external components or firmware debouncing required |
Applications
| Battery-Powered IoT Sensor Node | Low-Voltage Microcontroller System |
|---|---|
Use Scenario: A coin-cell-powered environmental sensor samples data every 5 minutes and transmits via BLE only upon threshold breach. IC Role / Device Role / Timing Role: MAX6833VXRD0 monitors the 1.575V LDO output powering the MCU and radio, asserting RESET during cold-start or battery sag to prevent corrupted boot sequences. Use Value: Its 7.5µA quiescent current extends 2032 coin-cell life beyond 5 years; 70µs reset pulse meets ARM Cortex-M0+ minimum reset width requirement. |
Use Scenario: An industrial programmable logic controller uses a 1.6V core supply derived from a DC/DC converter with ±5% tolerance. IC Role / Device Role / Timing Role: MAX6833VXRD0 provides power-on reset and brownout protection for the FPGA configuration controller, ensuring deterministic state initialization before configuration load. Use Value: ±2.5% threshold accuracy over temperature guarantees reset assertion before core logic fails, even at -40°C ambient. |
| Portable Medical Diagnostic Device | Wearable Health Monitor |
Use Scenario: A handheld ECG analyzer uses a single 1.5V alkaline cell stepped up to 1.575V for analog front-end and MCU. IC Role / Device Role / Timing Role: MAX6833VXRD0 supervises the regulated 1.575V rail and interfaces with a tactile reset button (MR) for field recalibration. Use Value: Push-pull active-high RESET directly drives the MCU's reset pin without level-shifting, simplifying layout and eliminating pullup resistor placement errors. |
Use Scenario: A wrist-worn pulse oximeter operates from a 1.5V silver-oxide cell with dynamic load causing frequent 100mV dips on the 1.575V supply. IC Role / Device Role / Timing Role: MAX6833VXRD0 detects sub-threshold excursions and holds RESET for 70µs, preventing spurious reboots during transient load spikes. Use Value: Immunity to <100ns VCC glitches avoids false resets caused by switching regulator noise, improving system uptime and user experience. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD1 | Same SC70-3 package, 1.63V reset threshold, 140ms timeout (not D0) | Designed for higher-voltage systems (>1.6V); longer timeout unsuitable for fast-boot µPs | Select only if 1.63V threshold and 140ms delay match system timing budget |
| TPS3123E15DBVR | SOT-23-3, 1.55V threshold, 200ms timeout, 1.2µA IQ | Ultra-low IQ but incompatible timeout and non-pin-compatible pinout (GND/RESET/VCC vs. GND/VCC/RESET) | Requires PCB redesign; suitable only for new designs prioritizing battery life over layout reuse |
Compared with MAX6833VXRD0, MAX809TRD1 offers identical form factor but mismatched timing and threshold, while TPS3123E15DBVR trades pin compatibility for lower IQ-neither provides drop-in replacement capability without validation of reset timing margins and layout adaptation.
Availability
MAX6833VXRD0 is available at Aetrix Electronics and suitable for battery-powered medical devices, portable instrumentation, and low-voltage microcontroller systems requiring stable component supply with long-term lifecycle support.
Supply support for MAX6833VXRD0 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 space- and power-constrained portable electronics, emphasizing minimal quiescent current, small footprint, and factory-trimmed precision thresholds.
FAQ
What is the exact reset threshold voltage of the MAX6833VXRD0?
The MAX6833VXRD0 has a factory-set reset threshold of 1.575V with ±2.5% accuracy over the full operating temperature range (-40°C to +85°C). This value is confirmed in the Electrical Characteristics table under "Reset Threshold (VTH)" for the "V" suffix variant and applies directly to the MAX6833VXRD0 part number.
Does the MAX6833VXRD0 require an external pullup resistor on the RESET pin?
No, the MAX6833VXRD0 features a push-pull active-high RESET output, so it does not require an external pullup resistor. The output actively drives high (≥0.8×VCC) when asserted and low (<0.2×VCC) when deasserted, enabling direct connection to standard CMOS reset inputs without additional components.
What is the function of the MR pin on the MAX6833VXRD0?
The MR (Manual Reset) pin on the MAX6833VXRD0 is an active-low input with an internal 20kΩ pullup to VCC. Pulling MR low forces a reset regardless of VCC level, and reset remains asserted for the full 70µs timeout period after MR returns high. It requires no external components and accepts CMOS-level signals.
Can the MAX6833VXRD0 operate reliably at VCC = 0.8V?
Yes, the MAX6833VXRD0 is fully specified to operate down to VCC = 0.75V, with guaranteed RESET assertion and validity at that level. At 0.8V, all electrical characteristics-including reset threshold accuracy, timeout timing, and output drive strength-remain within datasheet limits per the Absolute Maximum Ratings and Electrical Characteristics tables.
Is the MAX6833VXRD0 pin-compatible with the MAX809 series?
No, the MAX6833VXRD0 is not pin-compatible with the MAX809 series. Although both use SC70-3 packages, the pin assignments differ: MAX6833VXRD0 uses Pin 1 = GND, Pin 2 = RESET, Pin 3 = VCC, whereas MAX809 variants use Pin 1 = VCC, Pin 2 = GND, Pin 3 = RESET. PCB layout changes are required for substitution.
MAX6833VXRD0 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
MAX6833VXRD0 FAQ
1.How can I place an order for MAX6833VXRD0 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6833VXRD0 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 MAX6833VXRD0 reliable?
The price and inventory of MAX6833VXRD0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6833VXRD0 is usually 5 days.
3.What payment methods are accepted for MAX6833VXRD0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6833VXRD0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6833VXRD0?
MAX6833VXRD0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6833VXRD0 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 MAX6833VXRD0?
For technical support, including MAX6833VXRD0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6833VXRD0 requirements.
6.How does Aetrix verify that MAX6833VXRD0 is sourced from the original manufacturer or authorized distributors?
All MAX6833VXRD0 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 MAX6833VXRD0 meets industry standards.
7.What is the process for return or replacement of MAX6833VXRD0?
All MAX6833VXRD0 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6833VXRD0, 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 MAX6833VXRD0 part is unused and in its original packaging.
Return procedure for MAX6833VXRD0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6833VXRD0 Tags
-
MIC826SYMT-TR
Microchip Technology
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APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
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TPS3828-33DBVR
Texas Instruments
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V6340RSP3B+
EM Microelectronic
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EM6325CXSP5B-2.9+
EM Microelectronic
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MCP120T-300I/TT
Microchip Technology
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MCP130T-315I/TT
Microchip Technology
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MCP120T-475I/TT
Microchip Technology
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MCP111T-300E/TT
Microchip Technology
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MCP120T-315I/TT
Microchip Technology
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MCP809T-315I/TT
Microchip Technology
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