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Analog Devices Inc./Maxim Integrated MAX6364PUT31+T
- Part No.:
- MAX6364PUT31+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6364PUT31+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,439
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Product details
Overview
MAX6364PUT31+T from Maxim Integrated is a low-power microprocessor supervisory circuit with auxiliary user-adjustable reset input (RESET IN), battery switchover, and active-low open-drain reset output. It operates from +1.2V supply, features factory-preset 3.08V reset threshold (VTH), 150ms minimum reset timeout, and supports backup-battery operation for SRAM retention in brownout conditions. Used in portable instrumentation and industrial controllers requiring reliable power monitoring.
For engineers reviewing the MAX6364PUT31+T datasheet, MAX6364PUT31+T pinout, MAX6364PUT31+T application, or MAX6364PUT31+T equivalent, key selection criteria include its 3.08V precision reset threshold, RESET IN comparator referenced to 1.235V, SOT23-6 package compatibility, and guaranteed reset assertion down to 1.2V VCC/VBATT.
Technical Context
The MAX6364PUT31+T implements a precision bandgap-referenced comparator for RESET IN (1.235V ±5mV), enabling external voltage monitoring via resistor divider. Its internal MOSFET-based battery switchover activates when VCC falls below VTH and VBATT exceeds VCC by ≥20mV, with 40mV hysteresis preventing oscillation during slow VCC decay.
Reset logic combines three independent assertion sources: VCC undervoltage (3.08V threshold), RESET IN falling below 1.235V, and manual reset (MR) low. All assert an active-low open-drain RESET output with 150ms minimum timeout after recovery, ensuring µP initialization stability across power transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V (factory-preset, ±1.5% over -40°C to +85°C); ensures reliable detection of 3.3V supply brownout. |
| RESET IN Threshold | 1.235V (±5mV); enables accurate secondary supply monitoring using external resistor divider. |
| Supply Voltage Range | +1.2V to +5.5V (VCC or VBATT); supports ultra-low-voltage operation and battery backup without external regulators. |
| Reset Timeout Period | 150ms (minimum); guarantees µP reset hold time sufficient for full power stabilization and firmware initialization. |
| Quiescent Current | 11µA (typical at VCC = 2.8V); enables multi-year battery life in always-on backup applications. |
| Battery Standby Current | 0.02µA (typical at TA = +25°C); minimizes drain on coin-cell batteries during extended power loss. |
| VCC to OUT On-Resistance | 2.75Ω (max at VCC = 2.38V, IOUT ≤25mA); limits voltage drop when sourcing up to 150mA to SRAM. |
Pinout & Package
Package: 6-pin SOT23 (U6-1 outline, RoHS-compliant +T suffix). Compact footprint (2.9mm × 1.6mm) suitable for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low open-drain reset output | Drives µP reset input low during VCC undervoltage, RESET IN fault, or MR assertion; requires external pull-up. |
| 2: GND | Ground reference | Common return path for VCC, VBATT, and output currents; must be low-impedance for noise immunity. |
| 3: MR | Manual reset input | Logic-low assertion forces reset; internal 20kΩ pull-up to VCC eliminates need for external resistor. |
| 4: VCC | Main supply input | Powers device and supplies OUT during normal operation; reset asserted when voltage falls below 3.08V. |
| 5: OUT | Power output | Sources from VCC (normal) or VBATT (backup mode); delivers up to 150mA to SRAM or real-time clock. |
| 6: BATT | Backup battery input | Connects to coin cell; automatically powers OUT when VCC drops below threshold and VBATT > VCC + 20mV. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 3.08V with ±1.5% tolerance over temperature ensures precise 3.3V rail monitoring without calibration. |
| Auxiliary RESET IN comparator | 1.235V reference enables programmable secondary supply monitoring (e.g., 5V analog rail) via R1/R2 divider. |
| Battery switchover hysteresis | 40mV prevents chattering during slow VCC decay, eliminating false resets in marginal power conditions. |
| Ultra-low quiescent current | 11µA typical at 2.8V allows >10-year coin-cell life in backup mode for critical memory retention. |
| Reset propagation delay | 20µs max (VCC falling at 10V/ms) ensures rapid response to fast transients while rejecting sub-100ns noise. |
Applications
| Portable Medical Instrumentation | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Handheld blood glucose meters retaining calibration data during battery replacement. IC Role / Device Role / Timing Role: Supervises main 3.3V supply and triggers battery switchover to coin cell to maintain SRAM contents during power interruption. Use Value: Prevents data loss with <0.02µA battery standby current and 40mV switchover hysteresis ensuring clean transition. |
Use Scenario: Remote sensor nodes in factory automation requiring reliable restart after AC power dips. IC Role / Device Role / Timing Role: Monitors 24V-to-3.3V DC/DC output and asserts reset if voltage sags below 3.08V for >150ms. Use Value: Guarantees µP reinitialization with 150ms minimum timeout, eliminating erratic behavior from partial power-up states. |
| Smart Energy Meters | POS Terminal Backup Systems |
|
Use Scenario: Electricity meters preserving tariff data during grid outages using supercapacitor backup. IC Role / Device Role / Timing Role: Uses RESET IN to monitor supercap voltage via divider, asserting reset before capacitor drops below safe operating level. Use Value: 1.235V reference enables accurate 2.5V supercap threshold detection, preventing premature reset or data corruption. |
Use Scenario: Retail terminals maintaining transaction logs during brief UPS switchover delays. IC Role / Device Role / Timing Role: Provides dual-supply supervision-main 5V rail and isolated 3.3V logic rail-with independent reset assertion. Use Value: Active-low open-drain RESET output interfaces directly with µP reset pins and supports wired-OR fault signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6364HUT31+T | Same 3.08V reset threshold and SOT23-6 package, but features active-high open-drain RESET output instead of active-low. | Requires inverted reset logic in µP interface; unsuitable for systems expecting active-low assertion. | Select only when µP reset pin is active-high or external inverter is available. |
| MAX6364LUT31+T | Identical functionality and pinout, but specified for -40°C to +125°C extended temperature range versus -40°C to +85°C. | Valid for under-hood automotive or high-temperature industrial environments where standard grade fails. | Choose for thermal ruggedness; otherwise, MAX6364PUT31+T offers cost advantage for commercial-grade applications. |
Compared with MAX6364PUT31+T, the HUT31+T variant changes reset polarity (requiring hardware redesign), while the LUT31+T extends temperature range without altering electrical behavior-making the PUT version optimal for cost-sensitive, commercial-temperature embedded systems.
Availability
MAX6364PUT31+T is available at Aetrix Electronics and suitable for portable instrumentation, industrial control modules, and smart metering applications requiring stable component supply with long-term manufacturability.
Supply support for MAX6364PUT31+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 management, sensing, and connectivity in demanding industrial and medical applications.
The MAX6361–MAX6364 family was engineered specifically for low-power µP supervision with integrated battery switchover, targeting portable and battery-backed systems where reliability and minimal quiescent current are critical.
FAQ
What is the exact reset threshold voltage for MAX6364PUT31+T?
The MAX6364PUT31+T has a factory-preset reset threshold of 3.08V (typical), with guaranteed tolerance of ±1.5% over the full -40°C to +85°C operating temperature range. This value is laser-trimmed during production and documented in the Electrical Characteristics table of the MAX6361–MAX6364 datasheet Rev 4. The "31" suffix in MAX6364PUT31+T explicitly denotes this 3.08V threshold variant.
How does the RESET IN pin function on MAX6364PUT31+T?
The RESET IN pin on MAX6364PUT31+T compares an external voltage to an internal 1.235V reference. When the voltage at RESET IN falls below 1.235V, the device asserts the RESET output. This allows monitoring of secondary supplies (e.g., 5V analog rails) using a resistor divider. The MAX6364PUT31+T datasheet provides the equation VRTH = VREF × (1 + R1/R2) to calculate threshold voltages.
Can MAX6364PUT31+T operate without a backup battery?
Yes, MAX6364PUT31+T can operate without a backup battery. In such configurations, connect BATT to GND and VCC directly to OUT. The device retains all supervisory functions-VCC monitoring, RESET IN detection, and manual reset-but disables battery switchover. The MAX6364PUT31+T continues to provide reset assertion during power faults with no functional degradation.
What is the maximum load current supported by the OUT pin of MAX6364PUT31+T?
The OUT pin of MAX6364PUT31+T supports up to 150mA when powered from VCC (at VCC = 4.75V), 65mA at VCC = 3.15V, and 25mA at VCC = 2.38V. These limits are defined by the VCC-to-OUT on-resistance (RON) specification. In battery-backup mode, current capability depends on VBATT voltage and internal MOSFET characteristics, with typical values provided in the Typical Operating Characteristics graphs.
Is MAX6364PUT31+T compatible with lead-free soldering processes?
Yes, MAX6364PUT31+T is RoHS-compliant and qualified for lead-free reflow soldering. The "+T" suffix indicates lead-free packaging, and the device supports peak reflow temperatures up to +260°C (per JEDEC J-STD-020). The package outline (U6-1) and land pattern (90-0175) are documented on maximintegrated.com/packages, confirming compatibility with standard SMT assembly lines.
MAX6364PUT31+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.08V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6364PUT31+T FAQ
1.How can I place an order for MAX6364PUT31+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6364PUT31+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 MAX6364PUT31+T reliable?
The price and inventory of MAX6364PUT31+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6364PUT31+T is usually 5 days.
3.What payment methods are accepted for MAX6364PUT31+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6364PUT31+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6364PUT31+T?
MAX6364PUT31+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6364PUT31+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 MAX6364PUT31+T?
For technical support, including MAX6364PUT31+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6364PUT31+T requirements.
6.How does Aetrix verify that MAX6364PUT31+T is sourced from the original manufacturer or authorized distributors?
All MAX6364PUT31+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 MAX6364PUT31+T meets industry standards.
7.What is the process for return or replacement of MAX6364PUT31+T?
All MAX6364PUT31+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6364PUT31+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 MAX6364PUT31+T part is unused and in its original packaging.
Return procedure for MAX6364PUT31+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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