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Analog Devices Inc./Maxim Integrated MAX6361HUT46-T
- Part No.:
- MAX6361HUT46-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6361HUT46-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6361HUT46-T from Maxim Integrated is a low-power microprocessor supervisory circuit with factory-preset 4.63V reset threshold, manual reset input (MR), and active-low open-drain RESET output. It operates from +1.2V supply, provides 150ms minimum reset timeout, and enables battery switchover for SRAM backup in brownout conditions. Used in portable/battery-powered equipment requiring reliable power monitoring and system reset control.
For engineers reviewing the MAX6361HUT46-T datasheet, MAX6361HUT46-T pinout, MAX6361HUT46-T application, or MAX6361HUT46-T equivalent, key selection factors include its 4.63V precision reset threshold, MR debounced input, guaranteed RESET/RESET validity down to 1.2V, and SOT23-6 package compatibility with space-constrained µP systems.
Technical Context
The MAX6361HUT46-T integrates a precision voltage monitor, debounced manual reset input with internal 20kΩ pull-up, and battery switchover logic that activates when VCC falls below 4.63V and VBATT exceeds VCC by ≥20mV. Its reset assertion is guaranteed over full -40°C to +85°C temperature range and valid down to 1.2V supply.
It features power-supply transient immunity via built-in glitch filtering (100ns immunity), 150ms minimum reset timeout period, and supports SRAM backup by switching OUT between VCC and BATT based on voltage comparison - with battery-on mode ignored since this variant lacks BATT ON output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V (factory preset, ±15mV max tolerance at +25°C) |
| Supply Voltage Range | +1.2V to +5.5V (supports operation during deep brownout) |
| Reset Timeout Period | 150ms minimum (ensures µP completes power-up initialization) |
| Supply Current | 15µA typical at VCC = 5.5V (ultra-low quiescent current for battery longevity) |
| MR Input Pull-Up | 20kΩ internal resistor to VCC (enables direct switch-to-GND connection without external components) |
| RESET Output Type | Active-low open-drain (requires external pull-up; compatible with 1.2V–5.5V logic domains) |
| Operating Temperature | -40°C to +85°C (qualified for industrial embedded applications) |
Pinout & Package
Package: 6-pin SOT23 (U6-1 outline, RoHS-compliant, tape-and-reel). Compact footprint (2.9mm × 1.6mm) suitable for portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low open-drain reset output | Asserts low during power failure, MR activation, or brownout; requires external pull-up for logic-level compatibility |
| 2 - GND | Ground reference | Common return path for VCC, BATT, and output circuits; must be low-impedance for noise immunity |
| 3 - MR | Manual reset input | Debounced logic input; low pulse ≥1µs asserts reset; internal 20kΩ pull-up eliminates need for external resistor |
| 4 - VCC | Main supply input | Primary power source; reset asserted when VCC < 4.63V; powers internal circuitry and drives OUT when above threshold |
| 5 - OUT | Power output for SRAM or critical loads | Switches between VCC and BATT; sources up to 150mA from VCC, or from battery during backup mode |
| 6 - BATT | Backup battery input | Provides backup power to OUT when VCC drops below threshold and VBATT > VCC + 20mV; hysteresis prevents chatter |
Key Features
| Feature | Design Value |
|---|---|
| Factory-preset 4.63V threshold | Eliminates external resistor network for +5V system monitoring; ±15mV accuracy ensures reliable detection of 5% undershoot |
| Debounced MR input | Internal filtering removes mechanical switch bounce; no external RC required for pushbutton reset implementation |
| Battery switchover logic | Automatic transition to backup power with 40mV hysteresis; preserves SRAM data during AC loss without software intervention |
| 1.2V operating capability | Enables supervision during ultra-low-voltage brownout conditions where other supervisors fail, extending system fault coverage |
| Transient-immune design | Withstands 100ns glitches and rejects transients ≤30µs at 100mV overdrive, preventing spurious resets in noisy environments |
Applications
| Portable Medical Devices | Industrial PLC Controllers |
|---|---|
Use Scenario: Battery-powered glucose meters and handheld diagnostic tools require persistent memory retention during battery replacement or low-voltage events. IC Role / Device Role / Timing Role: MAX6361HUT46-T monitors main supply and triggers controlled reset while switching SRAM to backup battery, ensuring zero data loss. Use Value: Guarantees 150ms reset hold time and 4.63V precision threshold to prevent premature reset during Li+ battery discharge curve tail. | Use Scenario: Programmable logic controllers in factory automation must maintain state integrity during line voltage sags or generator transitions. IC Role / Device Role / Timing Role: MAX6361HUT46-T acts as primary power supervisor, asserting reset before VCC drops below 4.63V and enabling seamless battery backup to volatile registers. Use Value: 1.2V operational floor and -40°C to +85°C rating ensure reliability in uncontrolled industrial enclosures with wide thermal swings. |
| POS Terminals | Smart Energy Meters |
Use Scenario: Point-of-sale terminals powered by wall adapters experience frequent plug/unplug cycles and transient surges. IC Role / Device Role / Timing Role: MAX6361HUT46-T provides MR-initiated reset for firmware updates and detects adapter disconnect via VCC drop, initiating battery fallback. Use Value: Debounced MR input accepts momentary button press without external hardware; 100ns glitch immunity rejects ESD-induced supply noise. | Use Scenario: Meters with real-time clocks and tamper-detection RAM must retain billing data during grid outages lasting minutes. IC Role / Device Role / Timing Role: MAX6361HUT46-T supervises the 5V rail and controls switchover to coin-cell backup, maintaining RTC and secure memory operation. Use Value: 40mV hysteresis on BATT/VCC comparison prevents oscillation during slow brownout recovery, ensuring stable backup activation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6361HUT44-T | 4.38V reset threshold (vs. 4.63V); otherwise identical pinout, timing, and features | Suitable for +3.3V systems with tighter margin; not interchangeable in +5V designs requiring 4.63V trip point | Select only if system VCC nominal is 4.5V or lower and 4.38V threshold satisfies design margin requirements. |
| TPS3808G33DBVR | 3.3V fixed threshold, 350ms timeout, higher quiescent current (1.1µA vs. 15µA), same SOT23-6 package | Lacks manual reset input and battery switchover; designed for simpler reset-only applications without backup power management | Choose when battery backup is unnecessary and longer reset timeout improves robustness against brief dips. |
Compared with MAX6361HUT44-T and TPS3808G33DBVR, the MAX6361HUT46-T uniquely combines 4.63V precision threshold, MR functionality, and integrated battery switchover in a single SOT23-6 device-making it optimal for +5V portable systems requiring both supervised reset and nonvolatile memory retention.
Availability
MAX6361HUT46-T is available at Aetrix Electronics and suitable for portable medical devices, industrial PLC controllers, POS terminals, and smart energy meters requiring stable component supply across extended production lifecycles.
Supply support for MAX6361HUT46-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 high-performance analog and mixed-signal ICs for industrial, computing, and communications markets.
The MAX6361–MAX6364 family targets low-power microprocessor supervision with integrated battery backup, specifically engineered for portable, battery-critical applications where reliability during brownout and power failure is essential.
FAQ
What is the exact reset threshold voltage of the MAX6361HUT46-T?
The MAX6361HUT46-T has a factory-trimmed reset threshold of 4.63V, with a maximum tolerance of ±15mV at +25°C and guaranteed operation across -40°C to +85°C. This value is laser-trimmed during production and documented in the Electrical Characteristics table under "MAX636_UT46" suffix. The threshold remains stable over temperature, varying less than 10mV from -40°C to +85°C per the RESET THRESHOLD vs. TEMPERATURE graph.
Does the MAX6361HUT46-T support battery backup switchover, and how does it work?
Yes, the MAX6361HUT46-T supports automatic battery backup switchover. When VCC falls below 4.63V and VBATT exceeds VCC by at least 20mV, the internal MOSFET connects BATT to OUT. The 40mV hysteresis (20mV for turn-on, 20mV for turn-off) prevents oscillation during slow voltage transitions. OUT can source up to 150mA from VCC or up to 10mA from battery, preserving SRAM data without software involvement.
Can the MAX6361HUT46-T be used without a backup battery?
Yes. If no backup battery is used, connect BATT to GND and tie VCC directly to OUT. In this configuration, the MAX6361HUT46-T functions solely as a reset supervisor with manual reset capability. The battery switchover logic remains inactive, but all voltage monitoring, MR input, and RESET output functions operate normally - making the MAX6361HUT46-T viable for cost-sensitive designs where backup is optional.
What is the minimum pulse width required on the MR pin to assert reset on the MAX6361HUT46-T?
The MAX6361HUT46-T requires a minimum MR low pulse width of 1µs to reliably assert reset, as specified in the Electrical Characteristics table under "Minimum Pulse Width". The internal debounce circuit filters shorter spikes, ensuring immunity to noise. After MR returns high, RESET remains asserted for at least 150ms (tRP), independent of MR pulse duration - guaranteeing sufficient hold time for µP initialization.
Is the RESET output of the MAX6361HUT46-T push-pull or open-drain?
The RESET output of the MAX6361HUT46-T is active-low open-drain, as confirmed by the Ordering Information table (suffix "HUT" denotes open-drain active-low), Pin Description (RESET pin function), and Selector Guide. It requires an external pull-up resistor to the desired logic rail (1.2V–5.5V). This configuration allows wired-OR connectivity and voltage-level translation - unlike push-pull variants (e.g., MAX6361LUT46-T) which drive high actively.
MAX6361HUT46-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- 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-23-6
MAX6361HUT46-T FAQ
1.How can I place an order for MAX6361HUT46-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6361HUT46-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 MAX6361HUT46-T reliable?
The price and inventory of MAX6361HUT46-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6361HUT46-T is usually 5 days.
3.What payment methods are accepted for MAX6361HUT46-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6361HUT46-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6361HUT46-T?
MAX6361HUT46-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6361HUT46-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 MAX6361HUT46-T?
For technical support, including MAX6361HUT46-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6361HUT46-T requirements.
6.How does Aetrix verify that MAX6361HUT46-T is sourced from the original manufacturer or authorized distributors?
All MAX6361HUT46-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 MAX6361HUT46-T meets industry standards.
7.What is the process for return or replacement of MAX6361HUT46-T?
All MAX6361HUT46-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6361HUT46-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 MAX6361HUT46-T part is unused and in its original packaging.
Return procedure for MAX6361HUT46-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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