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Analog Devices Inc./Maxim Integrated MAX6364HUT31-T
- Part No.:
- MAX6364HUT31-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6364HUT31-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,763
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Product details
Overview
MAX6364HUT31-T from Maxim Integrated is a low-power microprocessor supervisory circuit with auxiliary user-adjustable reset input (RESET IN), battery switchover, and active-high open-drain reset output. It operates from +1.2V supply, features factory-preset 3.08V reset threshold, guarantees RESET/RESET validity down to 1.2V, and delivers 150ms minimum reset timeout - used in portable/battery-powered equipment for SRAM backup and brownout protection.
For engineers reviewing the MAX6364HUT31-T datasheet, MAX6364HUT31-T pinout, MAX6364HUT31-T application, or MAX6364HUT31-T equivalent, key selection criteria include its 3.08V VTH tolerance (±25mV), 1.235V internal reference for RESET IN, SOT23-6 package compatibility, and support for secondary power-supply monitoring via resistor-divider programming.
Technical Context
The MAX6364HUT31-T implements a precision voltage comparator architecture comparing VCC against a factory-trimmed 3.08V threshold and RESET IN against a stable 1.235V internal bandgap reference. Its dual-path power switching uses an internal MOSFET to connect BATT to OUT when VCC falls below VTH and VBATT exceeds VCC by ≥20mV, with 40mV hysteresis preventing chatter during slow brownouts.
It integrates a dedicated RESET IN comparator with ±25nA leakage and 10–100µs propagation delay, enabling externally programmable undervoltage detection for secondary rails. The active-high open-drain RESET output remains asserted for ≥150ms after VCC or RESET IN recovery, ensuring reliable µP initialization under transient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold (VTH) | 3.08V ±25mV - precisely monitors +3.0V or +3.3V system rails without external components. |
| RESET IN Reference | 1.235V - enables accurate secondary supply monitoring via R1/R2 divider (e.g., 4.60V at 100kΩ/273kΩ). |
| Supply Voltage Range | +1.2V to +5.5V - supports ultra-low-voltage operation and full compatibility with 1.8V/2.5V/3.3V/5.0V systems. |
| Reset Timeout Period | 150ms minimum - ensures µP completes power-up sequencing before release from reset. |
| Operating Temperature | -40°C to +85°C - qualified for industrial and extended-temperature embedded applications. |
| Supply Current (ICC) | 11µA at VCC = 2.8V - enables multi-year battery life in always-on backup mode. |
| Battery Standby Current | 0.02µA typical - minimizes drain on coin-cell batteries during long-term storage or standby. |
Pinout & Package
Package: 6-pin SOT23 (U6-1 outline, 21-0058 footprint), RoHS-compliant, -40°C to +85°C operating range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-high open-drain reset output | Asserts high during reset; requires external pull-up; compatible with 1.2V–5.5V logic families. |
| 2 - GND | Ground reference | Common return path for VCC, BATT, and all internal circuitry; must be low-impedance. |
| 3 - RESET IN | Auxiliary reset input | Compares external voltage to 1.235V reference; triggers reset if input < 1.235V; ±25nA leakage enables high-R dividers. |
| 4 - VCC | Main supply input | Primary power source; reset asserts when VCC < 3.08V; powers internal circuitry and drives OUT up to 150mA. |
| 5 - OUT | Power output | Switches between VCC and BATT; sources SRAM or real-time clock; on-resistance < 2.7Ω at VBATT = 2.8V. |
| 6 - BATT | Backup battery input | Connects to coin cell or supercap; activates OUT switchover when VCC < VTH and VBATT > VCC + 20mV. |
Key Features
| Feature | Design Value |
|---|---|
| User-adjustable RESET IN | Enables precise monitoring of secondary supplies (e.g., 4.60V analog rail) using two external resistors and 1.235V internal reference. |
| Battery switchover with hysteresis | 40mV hysteresis prevents oscillation during slow VCC decay; automatic transition preserves SRAM data during brownout. |
| Low 11µA supply current | Extends battery life in always-on backup applications; supports >10-year operation on CR2032 cells. |
| Guaranteed 1.2V reset operation | Ensures valid RESET/RESET signaling even as VCC or VBATT drops to 1.2V - critical for deep brownout recovery. |
| Power-supply transient immunity | Rejects negative-going transients ≤30µs at 100mV overdrive - eliminates false resets from noise or switching spikes. |
Applications
| Portable Medical Devices | Industrial Data Loggers |
|---|---|
Use Scenario: Battery-powered glucose meters and ECG monitors requiring nonvolatile memory retention during AC power loss or battery swap. IC Role / Device Role / Timing Role: Supervisory IC providing SRAM backup power switchover and reset assertion during brownout. Use Value: Prevents data corruption by maintaining SRAM voltage via BATT-to-OUT switch and asserting reset until stable VCC recovery. | Use Scenario: Remote environmental sensors logging temperature/humidity to flash memory across seasonal battery discharge cycles. IC Role / Device Role / Timing Role: Power supervisor detecting main supply failure and triggering controlled shutdown/reset sequence. Use Value: Enables safe write-completion before power loss using 150ms reset timeout and 0.02µA battery standby current. |
| POS Terminals | Smart Meters |
Use Scenario: Retail point-of-sale terminals powered by AC adapter with coin-cell backup for transaction rollback integrity. IC Role / Device Role / Timing Role: Dual-rail monitor verifying both 5V logic and 3.3V processor supply via RESET IN and VCC thresholds. Use Value: Secondary supply monitoring detects 5V rail collapse before it affects 3.3V domain, allowing graceful firmware save. | Use Scenario: Electricity meters with tamper-detection circuitry requiring secure timekeeping and event logging during grid outages. IC Role / Device Role / Timing Role: Backup controller managing RTC power and asserting reset to prevent inconsistent metering state. Use Value: 1.2V guaranteed reset operation ensures reliable restart even as lithium battery depletes to end-of-life voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6364HUT29-T | Factory-preset 2.93V reset threshold (vs. 3.08V); identical pinout, timing, and feature set. | Suitable for +2.5V or +2.8V systems where lower VTH improves margin against dropout. | Select when monitoring lower-voltage rails; no PCB changes required. |
| MAX6364HUT44-T | Factory-preset 4.38V reset threshold (vs. 3.08V); same SOT23-6 package and RESET IN functionality. | Optimized for +5.0V logic rails or legacy industrial controllers with higher supply tolerances. | Choose for 4.5V–5.5V primary supply monitoring; maintains identical backup and reset behavior. |
Compared with MAX6364HUT29-T and MAX6364HUT44-T, the MAX6364HUT31-T provides optimal reset margin for +3.0V/3.3V systems - balancing noise immunity and early fault detection without premature assertion.
Availability
MAX6364HUT31-T is available at Aetrix Electronics and suitable for portable medical devices, industrial data loggers, POS terminals, smart meters, and battery-backed memory systems requiring stable component supply and long-term lifecycle support.
Supply support for MAX6364HUT31-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 interface applications.
The MAX6361–MAX6364 family targets battery-backed microprocessor systems requiring reliable power monitoring, SRAM backup, and programmable reset supervision in space-constrained industrial and portable designs.
FAQ
What is the factory-preset reset threshold voltage for MAX6364HUT31-T?
The MAX6364HUT31-T has a factory-preset reset threshold voltage of 3.08V, with a tolerance of ±25mV over the -40°C to +85°C temperature range. This value is laser-trimmed during production and applies specifically to the VCC supply monitoring function. The MAX6364HUT31-T does not use external resistors to set this threshold - it is fixed and guaranteed per the Electrical Characteristics table in the datasheet.
How does the RESET IN pin function on MAX6364HUT31-T?
The RESET IN pin on MAX6364HUT31-T compares an external voltage to an internal 1.235V reference. When the voltage at RESET IN falls below 1.235V, the device asserts reset. This allows programmable monitoring of secondary supplies using a resistor divider. The MAX6364HUT31-T specifies ±25nA max leakage at RESET IN, enabling high-impedance dividers (e.g., 100kΩ/273kΩ for 4.60V detection) without accuracy loss.
What package type and footprint does MAX6364HUT31-T use?
The MAX6364HUT31-T uses a 6-pin SOT23 package (outline U6-1, land pattern 90-0175), measuring 2.9mm × 1.6mm × 1.1mm. It is RoHS-compliant and compatible with standard SOT23-6 reflow profiles. The "-T" suffix indicates tape-and-reel packaging; lead-free versions use "+T". Pin 1 is RESET (active-high open-drain), and the device requires no external capacitors for basic operation.
Can MAX6364HUT31-T operate with a 1.2V supply?
Yes, the MAX6364HUT31-T operates from a supply voltage as low as +1.2V on either VCC or VBATT, and guarantees valid RESET/RESET output states down to 1.2V. This capability enables use in ultra-low-power applications such as energy-harvesting sensors or deeply discharged battery systems. The 11µA typical supply current at 2.8V and 0.02µA battery standby current further support multi-year operation.
Does MAX6364HUT31-T provide battery switchover functionality?
Yes, the MAX6364HUT31-T provides automatic battery switchover: when VCC falls below the 3.08V reset threshold and VBATT exceeds VCC by ≥20mV, an internal MOSFET connects BATT to the OUT pin to maintain power to SRAM or RTC. The device includes 40mV hysteresis to prevent oscillation during slow brownouts. OUT can source up to 150mA from VCC and sustains operation down to 1.2V on either supply rail.
MAX6364HUT31-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.08V
- Output:
- Open Drain or Open Collector
- Reset:
- Active High
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6364HUT31-T FAQ
1.How can I place an order for MAX6364HUT31-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6364HUT31-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 MAX6364HUT31-T reliable?
The price and inventory of MAX6364HUT31-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6364HUT31-T is usually 5 days.
3.What payment methods are accepted for MAX6364HUT31-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6364HUT31-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6364HUT31-T?
MAX6364HUT31-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6364HUT31-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 MAX6364HUT31-T?
For technical support, including MAX6364HUT31-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6364HUT31-T requirements.
6.How does Aetrix verify that MAX6364HUT31-T is sourced from the original manufacturer or authorized distributors?
All MAX6364HUT31-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 MAX6364HUT31-T meets industry standards.
7.What is the process for return or replacement of MAX6364HUT31-T?
All MAX6364HUT31-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6364HUT31-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 MAX6364HUT31-T part is unused and in its original packaging.
Return procedure for MAX6364HUT31-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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