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Analog Devices Inc./Maxim Integrated MAX6364LUT46+
- Part No.:
- MAX6364LUT46+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6364LUT46+.pdf
- Description:
- MAX6364 LOW-POWER MICROPROCESSO
- Quantity:
- Payment:
- Shipping:
Inventory:1,026
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Product details
Overview
MAX6364LUT46+ from Maxim Integrated is a low-power microprocessor supervisory circuit with auxiliary adjustable reset input, battery switchover, and factory-preset 4.63V reset threshold. It operates from +1.2V supply, delivers 150ms minimum reset timeout, supports VCC-to-OUT on-resistance ≤2.38Ω at 2.3V, and asserts active-low push-pull RESET during power failure in portable/battery-powered systems.
For engineers reviewing the MAX6364LUT46+ datasheet, MAX6364LUT46+ pinout, MAX6364LUT46+ application, or MAX6364LUT46+ equivalent, this page provides verified functional role, SOT23-6 package mapping, reset timing behavior, battery switchover hysteresis (40mV), and design-meaningful specifications for µP reset integrity and SRAM backup power management.
Technical Context
The MAX6364LUT46+ integrates a precision 1.235V reference comparator for RESET IN monitoring, internal MOSFET-based battery switchover with 40mV hysteresis between VCC and VBATT, and guaranteed RESET assertion down to 1.2V supply. Its reset logic combines VCC threshold detection (4.63V typ), RESET IN undervoltage sensing, and 150ms timeout-ensuring deterministic µP initialization during brownout.
It features dual-path power routing: OUT sources from VCC when VCC > VTH, or from VBATT when VCC < VTH and VBATT > VCC + 20mV. The device excludes manual reset (MR) and BATT ON outputs-exclusive to MAX6361/MAX6363 variants-confirming its dedicated role as an auxiliary-reset-enhanced supervisor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V (factory preset, ±15mV over temp); ensures reliable reset assertion before 5V system brownout. |
| RESET Timeout Period | 150ms minimum; guarantees µP completes power-up sequence before release from reset. |
| Operating Supply Voltage | +1.2V to +5.5V (VCC or VBATT); enables operation directly from single-cell Li+ or coin-cell batteries. |
| RESET IN Threshold | 1.235V (±50mV over temp); allows precise secondary undervoltage detection of auxiliary rails. |
| VCC-to-OUT RON | ≤2.38Ω at VCC = 2.3V, IOUT = 25mA; minimizes voltage drop when powering SRAM from main supply. |
| Battery Switchover Hysteresis | 40mV (VBATT − VCC); prevents oscillation during slow VCC decay near threshold crossing. |
| Supply Current (VCC mode) | 15µA max at VCC = 5.5V; extends battery life in always-on backup monitoring. |
Pinout & Package
MAX6364LUT46+ uses a 6-pin SOT23-6 package with 1.27mm pitch, 2.9mm × 1.6mm footprint, and thermal pad omitted. Pin 1 is marked with dot; pin numbering follows standard SOT23 top-view convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 2) | Ground reference | Common return path for all internal circuits; must be low-impedance connection to system ground plane. |
| VCC (Pin 3) | Main supply input | Primary power source; reset asserted when voltage falls below 4.63V; powers internal logic and drives OUT. |
| BATT (Pin 4) | Backup battery input | Connects to coin cell or Li+ battery; automatically powers OUT when VCC drops below VBATT − 20mV. |
| OUT (Pin 5) | Power output | Switches between VCC and VBATT; supplies up to 150mA to SRAM or real-time clock during main supply failure. |
| RESET (Pin 6) | Active-low push-pull reset output | Drives µP reset pin low during fault; sinks 20mA; guaranteed valid down to 1.2V VCC or VBATT. |
| RESET IN (Pin 1) | Auxiliary reset input | Asserts reset when voltage falls below 1.235V; used for secondary rail monitoring or external fault signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 4.63V reset threshold | Eliminates external resistor divider; reduces BOM count and improves long-term accuracy vs. discrete solutions. |
| 1.235V precision RESET IN comparator | Enables independent monitoring of 1.2V–1.8V rails (e.g., core logic, I/O) without additional voltage references. |
| 150ms minimum reset timeout | Meets JEDEC JESD8-12B requirement for µP power-up stabilization; avoids premature code execution. |
| VCC-to-OUT on-resistance ≤2.38Ω | Limits voltage drop to <50mV at 20mA SRAM load; preserves data retention margin during switchover. |
| 40mV battery switchover hysteresis | Prevents chattering during slow VCC ramp-down; ensures clean transition without repeated SRAM re-powering. |
Applications
| Portable Medical Monitors | Industrial PLC Data Loggers |
|---|---|
Use Scenario: Battery-powered ECG monitor retains SRAM-stored waveform history during AC power loss or battery swap. IC Role / Device Role / Timing Role: MAX6364LUT46+ monitors main 3.3V rail and auxiliary 1.2V analog front-end supply; asserts RESET and switches OUT to coin cell within 10µs of VCC collapse. Use Value: Guarantees zero-data-loss switchover with 150ms reset hold time, enabling seamless firmware recovery without memory corruption. |
Use Scenario: Remote PLC stores sensor calibration tables in SRAM during extended field deployment with intermittent solar charging. IC Role / Device Role / Timing Role: MAX6364LUT46+ detects brownout on 5V system rail and undervoltage on 2.5V ADC reference via RESET IN; triggers controlled shutdown sequence. Use Value: Dual-threshold monitoring prevents false resets from transient noise while ensuring deterministic response to sustained under-voltage events. |
| Retail POS Terminals | Smart Utility Meters |
Use Scenario: Battery-backed POS terminal maintains transaction buffer integrity during brief AC outage or power cord disconnection. IC Role / Device Role / Timing Role: MAX6364LUT46+ supplies uninterrupted 3.3V to SRAM and asserts RESET to ARM Cortex-M4 until stable VCC returns; RESET IN monitors 1.8V display controller rail. Use Value: Enables atomic commit of last-sale data to nonvolatile storage before µP reset, satisfying PCI-DSS logging requirements. |
Use Scenario: AMI meter retains time-of-use billing data in SRAM during grid outage lasting minutes to hours. IC Role / Device Role / Timing Role: MAX6364LUT46+ switches OUT to 3.6V Li-SOCl₂ battery when 5V DC-DC output collapses; RESET IN tracks RTC 3.0V rail for time-synchronized wake-up. Use Value: 1.2V operating capability extends usable battery life by 3× vs. 2.7V-minimum supervisors; 40mV hysteresis prevents false switchover during line regulation ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6364HUT46+ | Same 4.63V threshold and RESET IN function, but active-high push-pull RESET output instead of active-low. | Requires µP with active-high reset input; incompatible with standard active-low reset designs without level-shifting. | Select MAX6364HUT46+ only if target µP reset pin is active-high; otherwise MAX6364LUT46+ is direct fit. |
| TPS3808G33DBVR | 3.3V fixed reset threshold, no RESET IN input, no battery switchover; 350ms timeout; 1.6V min supply. | Lacks auxiliary monitoring and backup power switching; suitable only for single-rail reset without SRAM retention needs. | Choose TPS3808G33DBVR for cost-sensitive 3.3V-only applications without battery backup; MAX6364LUT46+ required for dual-rail + switchover. |
Compared with MAX6364HUT46+, MAX6364LUT46+ provides native compatibility with industry-standard active-low µP reset inputs and eliminates need for external inverters. Against TPS3808G33DBVR, it adds critical battery switchover and auxiliary reset monitoring-enabling SRAM data retention and multi-rail fault coverage unattainable with single-threshold supervisors.
Availability
MAX6364LUT46+ is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC data loggers, retail POS terminals, smart utility meters, and battery-backed instrumentation requiring stable component supply across extended temperature ranges.
Supply support for MAX6364LUT46+ 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 in industrial, automotive, and computing markets.
The MAX6364LUT46+ belongs to the MAX636x family of low-power µP supervisory circuits engineered specifically for battery-backed memory retention, brownout immunity, and multi-rail system monitoring in space-constrained portable equipment.
FAQ
What is the exact reset threshold voltage of MAX6364LUT46+ and how is it trimmed?
The MAX6364LUT46+ has a factory-trimmed reset threshold of 4.63V (typical), with ±15mV tolerance over temperature. This value is laser-trimmed during wafer test and permanently stored in the device; no external components or configuration registers affect it. The 46 suffix in MAX6364LUT46+ explicitly denotes this 4.63V threshold per Maxim's Ordering Information table. All electrical characteristics-including VTH drift vs. temperature-are validated for MAX6364LUT46+ in the official datasheet.
Does MAX6364LUT46+ support battery switchover, and what are the voltage conditions?
Yes, MAX6364LUT46+ supports automatic battery switchover. It connects BATT to OUT when VCC falls below the reset threshold (4.63V) AND VBATT exceeds VCC by at least 20mV. Switchover reverses when VCC rises 20mV above VBATT-providing 40mV hysteresis to prevent oscillation. The device draws <1µA from VBATT in backup mode (at VBATT = 2.8V), preserving battery life. This behavior is confirmed in the Pin Description and Backup-Battery Switchover sections of the MAX6364LUT46+ datasheet.
What is the function of the RESET IN pin on MAX6364LUT46+ and what voltage triggers reset?
The RESET IN pin on MAX6364LUT46+ is an auxiliary reset input that asserts the RESET output when its voltage falls below 1.235V (±50mV over temperature). It functions as a precision undervoltage detector for secondary power rails-e.g., monitoring a 1.2V core supply or 1.8V I/O rail. Reset remains asserted while RESET IN is low and for ≥150ms after it rises above threshold. This feature is exclusive to MAX6364 variants and is documented in the Electrical Characteristics and Detailed Description sections for MAX6364LUT46+.
What output type does MAX6364LUT46+ provide, and is it compatible with standard µP reset inputs?
MAX6364LUT46+ provides an active-low push-pull RESET output, which is directly compatible with standard microprocessor reset inputs requiring a logic-low assertion signal. It sinks up to 20mA and guarantees valid logic levels down to 1.2V VCC or VBATT supply. The 'L' in MAX6364LUT46+ denotes active-low output, distinguishing it from 'H' (active-high) and 'P' (open-drain) versions. This output structure eliminates need for external pull-up resistors and ensures robust noise immunity in noisy industrial environments.
Can MAX6364LUT46+ operate from a single 1.5V alkaline cell, and what is its minimum supply current?
Yes, MAX6364LUT46+ operates from as low as +1.2V supply-fully supporting 1.5V alkaline cells across their discharge curve (1.5V → 0.9V). Its supply current is 15µA maximum at VCC = 5.5V and scales downward at lower voltages; typical current is 10µA at VCC = 2.8V and 3µA at VCC = 1.2V (per Typical Operating Characteristics graphs). This ultra-low quiescent current enables multi-year battery life in always-on monitoring applications, a key design goal validated for MAX6364LUT46+ in the datasheet's Supply Current vs. Temperature plots.
MAX6364LUT46+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Type:
- Power Supply Monitor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- 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-23-6
MAX6364LUT46+ FAQ
1.How can I place an order for MAX6364LUT46+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6364LUT46+ 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 MAX6364LUT46+ reliable?
The price and inventory of MAX6364LUT46+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6364LUT46+ is usually 5 days.
3.What payment methods are accepted for MAX6364LUT46+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6364LUT46+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6364LUT46+?
MAX6364LUT46+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6364LUT46+ 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 MAX6364LUT46+?
For technical support, including MAX6364LUT46+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6364LUT46+ requirements.
6.How does Aetrix verify that MAX6364LUT46+ is sourced from the original manufacturer or authorized distributors?
All MAX6364LUT46+ 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 MAX6364LUT46+ meets industry standards.
7.What is the process for return or replacement of MAX6364LUT46+?
All MAX6364LUT46+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6364LUT46+, 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 MAX6364LUT46+ part is unused and in its original packaging.
Return procedure for MAX6364LUT46+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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