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Analog Devices Inc./Maxim Integrated MAX6364HUT26-T
- Part No.:
- MAX6364HUT26-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6364HUT26-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,842
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Product details
Overview
MAX6364HUT26-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 2.63V 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 MAX6364HUT26-T datasheet, MAX6364HUT26-T pinout, MAX6364HUT26-T application, or MAX6364HUT26-T equivalent, key selection criteria include its 2.63V VTH accuracy over -40°C to +85°C, 1.235V internal reference for RESET IN, SOT23-6 package footprint, and support for external resistor-programmable secondary supply monitoring.
Technical Context
The MAX6364HUT26-T implements a precision voltage comparator architecture comparing VCC against a factory-trimmed 2.63V threshold and RESET IN against a stable 1.235V internal bandgap reference. Its battery switchover logic enforces dual conditions: VCC < VTH and VCC < VBATT − 20mV, with 40mV hysteresis to prevent oscillation during slow VCC decay.
It integrates an open-drain active-low RESET output with guaranteed 0.3V VOL at 1.6mA sink current, supports 150ms reset timeout with temperature stability (±10% over -40°C to +85°C), and maintains functional reset assertion even when VCC or VBATT drops to 1.2V - critical for low-voltage Li+ battery systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold (VTH) | 2.63V (factory-preset, ±1.5% accuracy over temp; enables reliable monitoring of +2.5V/3.0V rails) |
| RESET IN Reference Voltage | 1.235V (internal precision bandgap; allows external resistor divider to set custom undervoltage detection thresholds) |
| Supply Voltage Range | +1.2V to +5.5V (supports single-cell Li+, NiMH, and standard logic rails without external regulators) |
| Reset Timeout Period | 150ms minimum (guaranteed duration ensures µP completes power-up initialization before release) |
| Operating Temperature | -40°C to +85°C (fully specified industrial-grade operation; no derating required) |
| Quiescent Current | 11µA typical at VCC = 2.8V (enables multi-year battery life in always-on backup applications) |
| Output Type | Active-low open-drain RESET (compatible with 1.8V–5.5V µP reset inputs; requires external pull-up) |
Pinout & Package
MAX6364HUT26-T is housed in a RoHS-compliant 6-pin SOT23 package (outline U6-1, land pattern 90-0175), measuring 2.9mm × 1.6mm × 1.1mm, suitable for high-density portable PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low open-drain reset output | Asserts low during VCC undervoltage, RESET IN low condition, or after manual trigger; sinks up to 20mA; requires external pull-up |
| 2 - GND | Ground reference | Primary return path for all internal circuits and OUT switching MOSFET; must be low-impedance connection |
| 3 - RESET IN | Auxiliary reset input | Compares external voltage to 1.235V reference; falling edge below threshold asserts reset; 25nA max leakage preserves divider accuracy |
| 4 - VCC | Main supply input | Primary power source; powers internal circuitry and supplies OUT when above VTH; valid from 1.2V to 5.5V |
| 5 - OUT | Switched output | Sources from VCC if VCC ≥ VTH; switches to BATT if VCC < VTH and VCC < VBATT − 20mV; drives SRAM VDD directly |
| 6 - BATT | Backup battery input | Connects to Li+ or coin cell; enables seamless switchover; draws <0.05µA standby current when inactive |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.63V ±1.5% over -40°C to +85°C - eliminates need for external resistor networks and calibration |
| User-adjustable RESET IN | 1.235V internal reference with 25nA max input leakage - enables precise secondary supply monitoring via two-resistor divider |
| Battery switchover hysteresis | 40mV (VBATT − VCC) window - prevents chattering during slow brownout recovery and extends backup runtime |
| Low-voltage operation guarantee | RESET/RESET functional down to 1.2V VCC or VBATT - ensures reliable reset assertion even at end-of-life battery voltage |
| Transient immunity | Withstands 30µs negative VCC transients 100mV below VTH - reduces false resets in noisy power environments |
Applications
| Portable Medical Sensors | Industrial Data Loggers |
|---|---|
|
Use Scenario: Wearable ECG monitor powered by single 3.0V Li-ion cell with SRAM storing waveform data between transmissions. IC Role / Device Role / Timing Role: Supervises main rail, triggers reset on battery sag below 2.63V, and switches SRAM to backup during brownout. Use Value: Prevents data corruption during intermittent power loss; 11µA quiescent current extends battery life beyond 3 years. |
Use Scenario: Ruggedized field logger operating on 3.3V regulated supply with supercapacitor backup. IC Role / Device Role / Timing Role: Monitors primary 3.3V rail and secondary 5.0V analog supply via RESET IN resistor divider (set to 4.60V). Use Value: Dual-rail monitoring avoids missed sensor readings during analog supply collapse; 150ms reset hold guarantees clean µP restart. |
| Smart Meter Battery Backup | POS Terminal Power Management |
|
Use Scenario: Electricity meter with nonvolatile memory retaining tariff data during AC mains failure. IC Role / Device Role / Timing Role: Controls switchover from 3.3V system rail to 3.6V lithium thionyl chloride backup battery. Use Value: 40mV switchover hysteresis minimizes battery drain during marginal line conditions; <0.05µA BATT standby current preserves 10-year shelf life. |
Use Scenario: Retail point-of-sale terminal using 5.0V USB-C power with coin-cell backup for real-time clock and configuration memory. IC Role / Device Role / Timing Role: Provides reset signaling and powers RTC/SRAM from coin cell when main 5.0V drops below 2.63V. Use Value: Factory-set 2.63V threshold matches common 5.0V LDO dropout behavior; SOT23-6 footprint fits tight space constraints near RTC IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6364HUT29-T | Higher factory-preset reset threshold: 2.93V vs. 2.63V | Targets +3.0V or +3.3V systems where tighter margin above 2.63V is needed | Select when monitoring 3.0V rails with higher noise immunity requirement |
| TPS3808G125DBVR | Adjustable reset threshold (0.405V–5.8V) via external resistor; 350ms default timeout; 1.8µA IQ | Lacks integrated battery switchover and BATT/OUT path; requires external MOSFET for backup control | Choose when flexible threshold tuning is prioritized over integrated battery management |
Compared with MAX6364HUT26-T, MAX6364HUT29-T offers higher reset voltage for improved noise margin on 3.0V rails, while TPS3808G125DBVR provides broader threshold adjustability but requires external components to replicate battery switchover functionality - making MAX6364HUT26-T optimal for compact, self-contained backup solutions.
Availability
MAX6364HUT26-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial data loggers, smart meter battery backup, and POS terminal power management requiring stable component supply across extended production lifecycles.
Supply support for MAX6364HUT26-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, sensing, and interface applications, with emphasis on reliability and integration for demanding environments.
The MAX6361–MAX6364 family was developed specifically for microprocessor systems needing compact, low-power supervision with integrated battery switchover - targeting portable, industrial, and metering applications where board space and battery longevity are critical.
FAQ
What is the exact reset threshold voltage of MAX6364HUT26-T?
The MAX6364HUT26-T has a factory-trimmed reset threshold of 2.63V, with ±1.5% accuracy 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 under "Reset Threshold" for suffix "26". It is not adjustable and applies specifically to the VCC supply monitoring function of MAX6364HUT26-T.
How does the RESET IN pin function on MAX6364HUT26-T?
The RESET IN pin on MAX6364HUT26-T compares an external voltage to an internal 1.235V precision reference. When the voltage at RESET IN falls below 1.235V, the device asserts the RESET output. This allows users to configure a secondary undervoltage detector using a resistor divider - for example, setting a 4.60V trip point by selecting R1 = 273kΩ and R2 = 100kΩ. Input leakage is limited to ±25nA, preserving accuracy.
Does MAX6364HUT26-T support battery switchover, and what are the conditions?
Yes, MAX6364HUT26-T supports automatic battery switchover via its BATT and OUT pins. Switchover occurs only when both conditions are met: VCC falls below the 2.63V reset threshold AND VCC is at least 20mV lower than VBATT. A 40mV hysteresis (VBATT − VCC ≥ 20mV to engage, ≤ −20mV to disengage) prevents oscillation during slow VCC recovery. The internal MOSFET connects BATT to OUT with on-resistance as low as 2.75Ω at VBATT = 4.5V.
What package type and footprint does MAX6364HUT26-T use?
MAX6364HUT26-T uses a 6-pin SOT23 package (package code U6-1, outline 21-0058, land pattern 90-0175), measuring 2.9mm × 1.6mm × 1.1mm. It is RoHS-compliant and available in lead-free form (denoted by "+T" suffix). The pinout is standardized across the MAX6361–MAX6364 family: Pin 1 = RESET, Pin 2 = GND, Pin 3 = RESET IN, Pin 4 = VCC, Pin 5 = OUT, Pin 6 = BATT.
Can MAX6364HUT26-T operate with a 1.2V supply, and is reset guaranteed at that level?
Yes, MAX6364HUT26-T is fully operational with VCC or VBATT as low as +1.2V, and its RESET/RESET outputs remain functional and specified down to this voltage. The datasheet guarantees RESET assertion and timing (including 150ms timeout) even when VCC = 1.2V, enabling compatibility with ultra-low-voltage Li+ cells and energy-harvesting systems where supply may dip near end-of-discharge.
MAX6364HUT26-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:
- 2.63V
- 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
MAX6364HUT26-T FAQ
1.How can I place an order for MAX6364HUT26-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6364HUT26-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 MAX6364HUT26-T reliable?
The price and inventory of MAX6364HUT26-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6364HUT26-T is usually 5 days.
3.What payment methods are accepted for MAX6364HUT26-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6364HUT26-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6364HUT26-T?
MAX6364HUT26-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6364HUT26-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 MAX6364HUT26-T?
For technical support, including MAX6364HUT26-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6364HUT26-T requirements.
6.How does Aetrix verify that MAX6364HUT26-T is sourced from the original manufacturer or authorized distributors?
All MAX6364HUT26-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 MAX6364HUT26-T meets industry standards.
7.What is the process for return or replacement of MAX6364HUT26-T?
All MAX6364HUT26-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6364HUT26-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 MAX6364HUT26-T part is unused and in its original packaging.
Return procedure for MAX6364HUT26-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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