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Analog Devices Inc./Maxim Integrated MAX6834VXRD0
- Part No.:
- MAX6834VXRD0
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6834VXRD0.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,365
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Product details
Overview
The MAX6834VXRD0 from Maxim Integrated is an ultra-low-voltage microprocessor supervisory circuit with open-drain active-low reset output, factory-set 1.575V reset threshold, 1.5ms reset timeout period (D1 suffix), and 7.5µA typical supply current - designed to monitor +1.2V to +1.8V supplies in portable and battery-powered µP systems.
For engineers reviewing the MAX6834VXRD0 datasheet, MAX6834VXRD0 pinout, MAX6834VXRD0 application, or MAX6834VXRD0 equivalent, this device serves as a precision voltage detector and power-on reset generator for low-voltage embedded control, requiring no external components, supporting bidirectional µP reset I/O, and operating down to VCC = 0.55V with guaranteed RESET validity.
Technical Context
The MAX6834VXRD0 implements a precision bandgap-based voltage comparator with ±2.5% reset threshold accuracy over –40°C to +85°C, hysteresis of 0.75% of VTH, and immunity to fast VCC transients via internal filtering. Its open-drain RESET output requires an external pullup resistor and supports level-shifting across multiple supply domains.
It belongs to the MAX6832–MAX6840 family with fixed D1 timeout (1.5ms), uses BiCMOS process (681 transistors), and monitors only VCC - unlike MAX6838–MAX6840 variants that accept external RESET-IN. No manual reset (MR) or RESET-IN pins are present on this variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.575V ±2.5% - precisely matches 1.6V nominal core supplies; ensures reliable reset assertion before logic corruption |
| Reset Timeout Period | 1.5ms (D1) - provides sufficient hold time for µP initialization after power stabilization | Supply Current | 7.5µA typ at 1.2V - enables multi-year battery life in always-on monitoring applications |
| Operating Voltage Range | 0.55V to 3.6V - guarantees functional reset assertion even during deep brownout down to 0.55V |
| Output Type | Open-drain active-low RESET - enables wired-OR configuration and bidirectional µP reset I/O interfacing |
| Package | 3-pin SC70 - 2.0mm × 2.1mm footprint ideal for space-constrained portable PCBs |
| Temperature Range | –40°C to +85°C - qualified for industrial and extended-temperature embedded deployments |
Pinout & Package
Supplied in a 3-pin SC70 package (2.0mm × 2.1mm, 0.65mm pitch), the MAX6834VXRD0 features a compact, surface-mount outline optimized for high-density portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be connected to system ground plane |
| 2 | RESET | Open-drain active-low reset output; requires external pullup resistor (typically 10kΩ to VCC or higher supply) |
| 3 | VCC | Supply input and monitored voltage rail; powers device and sets detection threshold for 1.575V trip point |
Key Features
| Feature | Design Value |
|---|---|
| Factory-Set Reset Threshold | 1.575V (V suffix) - eliminates calibration overhead and external resistor networks |
| Ultra-Low Quiescent Current | 7.5µA typical - reduces standby power in battery-backed systems without sacrificing detection accuracy |
| Guaranteed RESET Validity | Down to VCC = 0.55V - ensures deterministic reset state during critical brownout recovery |
| Transient Immunity | Rejects <100ns negative VCC glitches - prevents spurious resets in electrically noisy environments |
| Open-Drain Output Architecture | Supports multi-source reset arbitration and level translation - e.g., 1.2V supervisor driving 3.3V µP reset line |
Applications
| Battery-Powered IoT Sensor Node | Low-Voltage FPGA Configuration Monitor |
|---|---|
Use Scenario: A coin-cell–powered environmental sensor node wakes periodically, samples data, and transmits via BLE - requiring reliable power-on reset and brownout protection during voltage sag. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET to the ARM Cortex-M0+ MCU until VCC stabilizes above 1.575V for ≥1.5ms. Use Value: Prevents firmware execution errors during weak-battery startup; 7.5µA ICC extends shelf life beyond 5 years. | Use Scenario: An FPGA-based edge AI accelerator uses a 1.2V core supply; configuration fails if power dips below specification during bitstream load. IC Role / Device Role / Timing Role: Dedicated reset generator holding FPGA PROG_B low until 1.2V rail reaches 1.575V and remains stable for 1.5ms. Use Value: Eliminates need for RC-based reset circuits; ±2.5% VTH tolerance ensures consistent timing across temperature and unit variance. |
| Wearable Health Monitor | Industrial PLC I/O Module |
Use Scenario: A wrist-worn ECG device operates from a 1.5V Li-SOCl₂ battery; voltage droop occurs during RF transmission bursts. IC Role / Device Role / Timing Role: Supervisory IC monitoring VCC and asserting open-drain RESET to the analog front-end and BLE SoC simultaneously. Use Value: Wired-OR capability allows shared RESET net; 0.55V VCC min operation catches deep brownouts before system lockup. | Use Scenario: A DIN-rail mounted I/O module derives 1.2V from a 24V DC-DC converter; input ripple and load transients risk µC reset instability. IC Role / Device Role / Timing Role: Independent reset source for the main controller, decoupled from power supply feedback loop dynamics. Use Value: Immunity to 100ns VCC glitches avoids false resets during switching noise; SC70 package fits tight board spacing constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TV293+T | Push-pull active-low RESET, 2.93V threshold, 140ms timeout, SC70-3 package | Designed for 3.3V systems; incompatible with sub-2V supplies | Select only when monitoring >2.9V rails; not suitable for 1.2V–1.8V core supplies |
| TPS3808G15DBVR | Adjustable threshold (via external resistor), 1.5V fixed option, 200ms timeout, SOT-23-5 | Requires external resistor network; longer timeout limits use in fast-boot systems | Choose when design flexibility or tighter threshold tolerance (±0.5%) is required over ultra-low ICC |
Compared with MAX6834VXRD0, MAX809TV293+T targets higher-voltage domains and lacks open-drain flexibility, while TPS3808G15DBVR trades 7.5µA ICC for programmability and tighter accuracy - making MAX6834VXRD0 optimal for fixed-threshold, ultra-low-power, space-constrained 1.6V applications.
Availability
MAX6834VXRD0 is available at Aetrix Electronics and suitable for battery-powered IoT sensor nodes, wearable health monitors, low-voltage FPGA configuration monitors, and industrial PLC I/O modules requiring stable component supply across long production lifecycles.
Supply support for MAX6834VXRD0 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, communications, computing, and consumer applications.
The MAX6832–MAX6840 product line delivers ultra-low-voltage supervisory circuits targeting portable, battery-operated, and energy-sensitive embedded systems where minimal quiescent current and precise low-threshold detection are critical.
FAQ
What is the exact reset threshold voltage of the MAX6834VXRD0, and how accurate is it over temperature?
The MAX6834VXRD0 has a factory-set reset threshold of 1.575V with ±2.5% accuracy over the full operating temperature range of –40°C to +85°C. This value is specified in the Electrical Characteristics table under "Reset Threshold (VTH)" for suffix V devices and is guaranteed by design - not just typical. The MAX6834VXRD0 achieves this stability using a precision bandgap reference and trimmed comparator architecture.
Does the MAX6834VXRD0 include a manual reset (MR) input or RESET-IN pin?
No, the MAX6834VXRD0 does not include a manual reset (MR) input or RESET-IN pin. It is a 3-pin SC70 device (VCC, GND, RESET) dedicated solely to monitoring the VCC supply. MR functionality is present only on 4-pin variants like MAX6835/MAX6836/MAX6837, and RESET-IN is exclusive to MAX6838/MAX6839/MAX6840 - neither feature appears in the pin description or functional diagrams for MAX6834VXRD0.
What is the purpose of the D1 suffix in MAX6834VXRD0, and what is its corresponding timeout period?
The D1 suffix in MAX6834VXRD0 specifies a 1.5ms reset active timeout period, as defined in Table 2 ("Active Timeout Period Guide") of the datasheet. After VCC rises above 1.575V, the open-drain RESET output remains low for exactly 1.5ms before going high-impedance - ensuring sufficient hold time for microprocessor initialization. This is distinct from D0 (70µs, voltage detector mode) and D2 (30ms).
Can the MAX6834VXRD0 operate reliably when VCC drops below 1.0V?
Yes, the MAX6834VXRD0 guarantees valid reset assertion down to VCC = 0.55V, as confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables. Its internal circuitry continues to compare VCC against the 1.575V threshold and assert RESET (low) until VCC falls below 0.55V - at which point the output becomes high-impedance. For applications requiring RESET validity all the way to 0V, a pulldown resistor on the RESET line is recommended per Figure 3 in the datasheet.
What package type and dimensions does the MAX6834VXRD0 use, and is lead-free compliance available?
The MAX6834VXRD0 is supplied in a 3-pin SC70 package (package code XRD), measuring 2.0mm × 2.1mm with 0.65mm pin pitch. Lead-free compliance is available: replace the standard "-T" tape-and-reel suffix with "+T" (e.g., MAX6834VXRD0+T) to order RoHS-compliant, lead-free packaging - as stated in the Ordering Information section.
MAX6834VXRD0 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:
- 1.665V
- Output:
- Open Drain or Open Collector
- 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
MAX6834VXRD0 FAQ
1.How can I place an order for MAX6834VXRD0 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6834VXRD0 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 MAX6834VXRD0 reliable?
The price and inventory of MAX6834VXRD0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6834VXRD0 is usually 5 days.
3.What payment methods are accepted for MAX6834VXRD0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6834VXRD0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6834VXRD0?
MAX6834VXRD0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6834VXRD0 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 MAX6834VXRD0?
For technical support, including MAX6834VXRD0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6834VXRD0 requirements.
6.How does Aetrix verify that MAX6834VXRD0 is sourced from the original manufacturer or authorized distributors?
All MAX6834VXRD0 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 MAX6834VXRD0 meets industry standards.
7.What is the process for return or replacement of MAX6834VXRD0?
All MAX6834VXRD0 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6834VXRD0, 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 MAX6834VXRD0 part is unused and in its original packaging.
Return procedure for MAX6834VXRD0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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