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Analog Devices Inc./Maxim Integrated MAX6347XR34-T
- Part No.:
- MAX6347XR34-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6347XR34-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,963
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Product details
Overview
MAX6347XR34-T from Maxim Integrated is an active-high push-pull microprocessor supervisory circuit that monitors VCC supply voltage and asserts a reset signal when voltage falls below 3.400V (typical), holding reset active for ≥100ms after recovery; it operates from 1.2V to 5.5V, draws ≤1.0µA supply current at 3V, and is housed in a 3-pin SC70 package for space-constrained embedded power monitoring.
For engineers reviewing the MAX6347XR34-T datasheet, MAX6347XR34-T pinout, MAX6347XR34-T application, or MAX6347XR34-T equivalent, this device serves as a precision, ultra-low-power reset supervisor for battery-powered µP systems requiring guaranteed reset assertion down to 1V supply and immunity to fast VCC transients.
Technical Context
The MAX6347XR34-T implements a factory-trimmed bandgap-based reset comparator with ±1.5% threshold accuracy at +25°C and ±2.5% over –40°C to +85°C, plus 40ppm/°C tempco. Its internal timing circuit ensures minimum 100ms reset timeout after power-up, independent of VCC slew rate.
It features active-high push-pull RESET output capable of sourcing ≥500µA at 0.8·VCC while asserted, and sinking ≤0.4V at 1.2mA when deasserted - eliminating need for external pull-up resistors. Reset hysteresis is fixed at 9.5mV for the MAX6347 family.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.400V (typ), 3.315V–3.485V (–40°C to +85°C); ensures reliable brownout detection for 3.3V systems |
| Supply Current | ≤1.0µA (max) at 3V; enables multi-year operation in coin-cell–powered devices |
| Reset Timeout | 100–280ms (min/max); guarantees sufficient µP initialization time across temperature |
| VCC Operating Range | 1.2V to 5.5V; supports valid reset assertion even during deep brownout or partial power loss |
| Output Type | Active-high push-pull; drives reset line directly without external components or pull-ups |
| Reset Hysteresis | 9.5mV; prevents chatter near threshold during slow VCC recovery |
| Transient Immunity | Rejects VCC glitches <100µs at 100mV overdrive; avoids false resets in noisy environments |
Pinout & Package
MAX6347XR34-T is supplied in a 3-pin SC70-3 package (outline X3-2, land pattern 90-0208), measuring 2.0mm × 2.1mm × 0.95mm, with gull-wing leads and RoHS-compliant finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be low-impedance connection |
| 2 | RESET | Active-high push-pull output; drives high during reset assertion (VCC < VTH), low otherwise |
| 3 | VCC | Supply input; powers internal circuitry and defines reset threshold reference point |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1µA max enables >10-year battery life in always-on IoT sensors |
| Precision reset threshold | ±2.5% over full temperature range ensures consistent system behavior across operating environments |
| No external components required | Integrated comparator, reference, and timer eliminate BOM cost and layout area for discrete supervision |
| Guaranteed reset state down to 1V | Ensures fail-safe reset assertion even during severe undervoltage conditions before shutdown |
| SC70-3 footprint compatibility | Matches industry-standard 3-pin supervisory footprint, enabling drop-in replacement for MAX803/MAX809 series |
Applications
| Industrial PLC Controllers | Portable Medical Monitors |
|---|---|
Use Scenario: Microcontroller-based programmable logic controllers deployed in factory automation require deterministic reset behavior during line-voltage sags or backup battery switchover. IC Role / Device Role / Timing Role: MAX6347XR34-T acts as primary VCC supervisor, asserting active-high RESET to hold µP in reset until stable 3.3V rail is confirmed. Use Value: 100ms minimum timeout prevents premature firmware execution; 9.5mV hysteresis avoids oscillation during marginal supply recovery. |
Use Scenario: Handheld ECG or pulse oximeter units powered by single-cell Li-ion batteries experience gradual voltage decay and transient noise during sensor activation. IC Role / Device Role / Timing Role: MAX6347XR34-T continuously monitors battery voltage and triggers controlled µP reset before brownout-induced data corruption occurs. Use Value: 1µA supply current extends usable battery runtime; 3.4V threshold aligns precisely with safe operating window for 3.3V analog front-end ICs. |
| Smart Metering Modules | Wireless Sensor Nodes |
Use Scenario: Electricity meters with dual-supply architecture (mains + supercapacitor backup) demand robust reset coordination during AC loss and restoration events. IC Role / Device Role / Timing Role: MAX6347XR34-T supervises the 3.3V logic rail and synchronizes reset timing between metering SoC and communication modem. Use Value: Push-pull output drives shared reset bus without contention; transient immunity prevents spurious resets during relay switching noise. |
Use Scenario: Sub-GHz or BLE mesh nodes sleeping for hours between transmissions rely on precise wake-up sequencing and fault-free boot after cold start. IC Role / Device Role / Timing Role: MAX6347XR34-T provides clean, timed reset pulse to ensure flash memory controller and RF transceiver initialize correctly. Use Value: Factory-trimmed 3.4V threshold eliminates calibration overhead; SC70-3 size fits tight PCB real estate constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TR33D-TP | 3.3V nominal threshold (±2.5%), SOT23-3, active-low open-drain output | Requires external pull-up; incompatible with active-high reset inputs without level-shifting | Select only if system design mandates active-low reset signaling and board layout allows pull-up resistor placement |
| TLV803EB33DBZR | 3.3V threshold (±2%), SOT23-3, active-high push-pull, 0.9µA typical ICC | Near-identical electrical behavior but different marking code and qualification; not pin-for-pin tested with MAX6347XR34-T | Valid alternative where TI-sourced parts are preferred; verify reset timing margin under worst-case VCC ramp rates |
Compared with MAX809TR33D-TP and TLV803EB33DBZR, the MAX6347XR34-T offers tighter factory trim (±1.5% at 25°C), higher VCC lower limit (1.2V vs. 1.0V), and guaranteed 100ms minimum timeout - making it preferable for mission-critical brownout resilience in industrial edge devices.
Availability
MAX6347XR34-T is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, smart metering modules, wireless sensor nodes, and battery-backed embedded systems requiring stable component supply with long-term lifecycle support.
Supply support for MAX6347XR34-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 industrial, communications, and computing applications, emphasizing reliability, integration, and low-power operation.
The MAX63xx family was developed specifically for microprocessor reset supervision in space- and power-constrained systems, delivering factory-trimmed thresholds, ultra-low ICC, and robust transient immunity without external components.
FAQ
What is the exact reset threshold voltage of MAX6347XR34-T?
The MAX6347XR34-T has a nominal reset threshold of 3.400V at +25°C, with tolerance of ±1.5% (3.349V to 3.451V) at room temperature and ±2.5% (3.315V to 3.485V) over the full –40°C to +85°C operating range, as specified in Table 1 of the datasheet.
Does MAX6347XR34-T require an external pull-up resistor on the RESET pin?
No, MAX6347XR34-T does not require an external pull-up resistor because it features an active-high push-pull RESET output. The internal driver sources current when reset is asserted and sinks current when deasserted, enabling direct connection to µP reset inputs without additional components.
Can MAX6347XR34-T operate reliably below 2.5V supply voltage?
Yes, MAX6347XR34-T is fully specified down to 1.2V VCC over temperature and guaranteed to maintain correct reset state down to 1.0V. This allows reliable supervision during deep brownout conditions where other supervisors may fail to assert reset.
What is the maximum transient duration that MAX6347XR34-T can ignore on the VCC line?
At a 100mV overdrive (VTH – VCC = 100mV), MAX6347XR34-T ignores transients up to approximately 100µs, as shown in Figure 4 of the datasheet. Shorter transients are rejected more aggressively, supporting robust operation in electrically noisy environments.
Is MAX6347XR34-T pin-compatible with older Maxim reset supervisors like MAX809?
MAX6347XR34-T shares the same 3-pin SC70-3 footprint and pinout (GND, RESET, VCC) as MAX809 variants, and the datasheet explicitly states pin compatibility with MAX803/MAX809/MAX810. However, output polarity differs: MAX6347XR34-T is active-high push-pull, whereas MAX809 is active-low open-drain - requiring schematic review before substitution.
MAX6347XR34-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.4V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6347XR34-T FAQ
1.How can I place an order for MAX6347XR34-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6347XR34-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 MAX6347XR34-T reliable?
The price and inventory of MAX6347XR34-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6347XR34-T is usually 5 days.
3.What payment methods are accepted for MAX6347XR34-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6347XR34-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6347XR34-T?
MAX6347XR34-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6347XR34-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 MAX6347XR34-T?
For technical support, including MAX6347XR34-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6347XR34-T requirements.
6.How does Aetrix verify that MAX6347XR34-T is sourced from the original manufacturer or authorized distributors?
All MAX6347XR34-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 MAX6347XR34-T meets industry standards.
7.What is the process for return or replacement of MAX6347XR34-T?
All MAX6347XR34-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6347XR34-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 MAX6347XR34-T part is unused and in its original packaging.
Return procedure for MAX6347XR34-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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