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Analog Devices Inc./Maxim Integrated MAX6364LUT44-T
- Part No.:
- MAX6364LUT44-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6364LUT44-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,595
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Product details
Overview
MAX6364LUT44-T from Maxim Integrated is a low-power microprocessor supervisory circuit with auxiliary user-adjustable reset input (RESET IN), battery switchover, and active-low push-pull reset output. It operates from +1.2V supply, features factory-preset 4.40V reset threshold (±1.5% over temperature), 150ms minimum reset timeout, and supports SRAM backup in brownout conditions. Used in portable instrumentation and industrial controllers requiring reliable power-fail detection and battery fallback.
For engineers reviewing the MAX6364LUT44-T datasheet, MAX6364LUT44-T pinout, MAX6364LUT44-T application, or MAX6364LUT44-T equivalent, key selection criteria include its 4.40V precision reset threshold, RESET IN comparator referenced to 1.235V, SOT23-6 package compatibility, and guaranteed reset assertion down to 1.2V VCC/VBATT - critical for ultra-low-voltage embedded systems.
Technical Context
The MAX6364LUT44-T integrates a precision voltage monitor, an auxiliary reset input comparator (threshold = 1.235V ±5mV), and a battery switchover MOSFET with 40mV hysteresis between VCC and VBATT. Its internal reference enables programmable secondary supply monitoring via external resistor divider on RESET IN.
It delivers active-low push-pull RESET output with 0.4V max VOL at 3.2mA sink, supports manual reset assertion via MR (internal 20kΩ pull-up), and guarantees reset validity across full -40°C to +85°C temperature range and 1.2V–5.5V supply range. No watchdog or BATT ON functions are present - this variant is dedicated to adjustable reset-in applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.40V ±1.5% (factory preset; ensures reliable detection of 4.5V nominal supply droop) |
| RESET IN Threshold | 1.235V ±5mV (enables precise secondary supply monitoring via external R-divider) |
| Reset Timeout Period | 150ms minimum (guarantees µP initialization stability after power recovery) |
| Supply Voltage Range | +1.2V to +5.5V (supports operation directly from single-cell Li+ or 3.3V/5V rails) |
| Output Type | Active-low push-pull RESET (0.4V max VOL at 3.2mA; no external pull-up required) |
| Battery Switchover Hysteresis | 40mV (prevents oscillation during slow VCC fall/rise near VBATT) |
| Quiescent Current | 15µA typical at VCC = 5.5V (enables multi-year battery life in backup mode) |
Pinout & Package
Package: 6-pin SOT23 (U6-1 outline, 21-0058; RoHS-compliant, tape-and-reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push-pull reset output | Drives µP reset pin directly; sinks 3.2mA max; no external pull-up needed |
| 2 - GND | Ground reference | Common return for VCC, VBATT, and all internal circuits |
| 3 - MR | Manual reset input | Logic-low assertion triggers reset; internal 20kΩ pull-up to VCC |
| 4 - VCC | Main supply input | Primary power source; reset asserted when VCC falls below 4.40V |
| 5 - OUT | Power output | Switches between VCC and VBATT; powers SRAM during brownout |
| 6 - BATT | Backup battery input | Connects to Li+ cell; activates switchover when VCC < VBATT − 20mV |
Key Features
| Feature | Design Value |
|---|---|
| Auxiliary RESET IN comparator | 1.235V internal reference enables programmable undervoltage detection for secondary supplies (e.g., 5V analog rail) |
| Guaranteed 1.2V operation | RESET remains valid even as VCC or VBATT drops to 1.2V - essential for deep-brownout recovery |
| 40mV battery switchover hysteresis | Prevents chattering during slow VCC transitions near VBATT, ensuring clean SRAM power handoff |
| 150ms reset timeout | Meets JEDEC JESD79-4 requirement for DDR memory initialization timing |
| SOT23-6 footprint | 0.95mm pitch, 2.9mm × 1.6mm body - compatible with high-density PCB layouts and automated assembly |
Applications
| Portable Medical Instrumentation | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Handheld blood glucose meter operating from single 3.0V coin cell with SRAM-backed calibration data. IC Role / Device Role / Timing Role: Supervises main 3.0V rail and asserts reset if voltage drops below 2.85V; switches SRAM to backup cell when VCC falls. Use Value: Prevents corrupted calibration storage during battery depletion; 15µA quiescent current extends battery life beyond 2 years. |
Use Scenario: DIN-rail mounted I/O module powered by 24VDC supply with local 3.3V LDO and nonvolatile SRAM. IC Role / Device Role / Timing Role: Monitors 3.3V logic rail and provides 4.40V reset threshold for upstream 5V analog supply via RESET IN divider. Use Value: Enables independent failure detection of dual power domains without adding discrete comparators or extra ICs. |
| Smart Energy Meters | POS Terminal Battery Backup |
Use Scenario: Electricity meter with tamper-detection SRAM storing last-read values during AC mains interruption. IC Role / Device Role / Timing Role: Provides 150ms reset hold time and seamless VCC-to-BATT switchover to preserve metering registers. Use Value: Meets ANSI C12.1 and IEC 62053-21 requirements for data retention during 200ms power loss events. |
Use Scenario: Retail POS terminal using Li-ion backup to retain transaction logs during brief AC outages. IC Role / Device Role / Timing Role: Supplies regulated 3.3V to SRAM via OUT pin; asserts RESET to halt processor until stable power returns. Use Value: Eliminates need for external reset supervisor and power-path MOSFET, reducing BOM count by 3 components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6364HUT44-T | Same 4.40V reset threshold and RESET IN function, but active-low open-drain RESET output (requires external pull-up) | Used where system-level reset bus shares multiple devices; less suitable for direct µP reset drive | Select when shared reset line architecture is required and board space allows pull-up resistor |
| TPS3808G33DBVR | 3.3V fixed reset threshold, no RESET IN pin, 200ms timeout, 2.5V–6.0V supply range | Lacks battery switchover and auxiliary reset input; suited only for primary rail monitoring | Choose only if secondary supply monitoring and battery backup are unnecessary and 3.3V threshold suffices |
Compared with MAX6364LUT44-T, MAX6364HUT44-T requires external pull-up for reset signaling and offers lower drive strength, while TPS3808G33DBVR omits both battery control and adjustable reset input - making MAX6364LUT44-T uniquely suited for dual-rail, battery-backed SRAM applications.
Availability
MAX6364LUT44-T is available at Aetrix Electronics and suitable for portable medical instrumentation, industrial PLC I/O modules, smart energy meters, and POS terminal battery backup requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6364LUT44-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 in industrial, automotive, and computing markets.
The MAX6361–MAX6364 family was developed specifically for microprocessor systems needing integrated power-supply monitoring, battery switchover, and flexible reset generation in space-constrained, low-power environments.
FAQ
What is the exact reset threshold voltage of the MAX6364LUT44-T?
The MAX6364LUT44-T has a factory-preset reset threshold of 4.40V, with guaranteed tolerance of ±1.5% over the full -40°C to +85°C temperature range. This value is laser-trimmed during production and does not require external configuration. The MAX6364LUT44-T datasheet specifies 4.25V (min) and 4.50V (max) at +25°C, tightening to 4.34V–4.46V across temperature.
Does the MAX6364LUT44-T support battery backup functionality?
Yes, the MAX6364LUT44-T fully supports battery backup. When VCC falls below the 4.40V threshold and VBATT exceeds VCC by at least 20mV, the internal MOSFET connects the battery to the OUT pin to power SRAM or other critical circuitry. The device maintains 40mV hysteresis to prevent switching chatter, and the MAX6364LUT44-T guarantees valid reset output down to 1.2V on either VCC or VBATT.
How is the RESET IN pin used on the MAX6364LUT44-T?
The RESET IN pin on the MAX6364LUT44-T connects to an internal comparator referenced to 1.235V ±5mV. When the voltage at RESET IN falls below this threshold, the device asserts reset. It is typically used with an external resistor divider to monitor secondary supplies - for example, a 5.0V rail can be scaled to 1.235V using R1 = 273kΩ and R2 = 100kΩ, enabling programmable undervoltage detection independent of the main 4.40V threshold.
What is the reset output type of the MAX6364LUT44-T?
The MAX6364LUT44-T features an active-low push-pull RESET output. Unlike open-drain variants, it does not require an external pull-up resistor and can directly drive standard CMOS/TTL reset inputs. The output guarantees VOL ≤ 0.4V at 3.2mA sink current, ensuring robust noise immunity and compatibility with µPs requiring strong reset assertion without additional components.
Can the MAX6364LUT44-T operate from a 1.8V supply?
Yes, the MAX6364LUT44-T operates from supply voltages as low as +1.2V on either VCC or VBATT, making it fully compatible with 1.8V systems. Its reset output remains valid and functional down to 1.2V, and the internal reference and comparator circuitry maintain specified accuracy across the entire 1.2V–5.5V range. This capability is confirmed in the Electrical Characteristics table under "RESET/RESET Valid Down to 1.2V Guaranteed".
MAX6364LUT44-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:
- 4.38V
- Output:
- Push-Pull, Totem Pole
- 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
MAX6364LUT44-T FAQ
1.How can I place an order for MAX6364LUT44-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6364LUT44-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 MAX6364LUT44-T reliable?
The price and inventory of MAX6364LUT44-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6364LUT44-T is usually 5 days.
3.What payment methods are accepted for MAX6364LUT44-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6364LUT44-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6364LUT44-T?
MAX6364LUT44-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6364LUT44-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 MAX6364LUT44-T?
For technical support, including MAX6364LUT44-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6364LUT44-T requirements.
6.How does Aetrix verify that MAX6364LUT44-T is sourced from the original manufacturer or authorized distributors?
All MAX6364LUT44-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 MAX6364LUT44-T meets industry standards.
7.What is the process for return or replacement of MAX6364LUT44-T?
All MAX6364LUT44-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6364LUT44-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 MAX6364LUT44-T part is unused and in its original packaging.
Return procedure for MAX6364LUT44-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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