My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6361PUT46+
- Part No.:
- MAX6361PUT46+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6361PUT46+.pdf
- Description:
- MAX6361 LOW-POWER MICROPROCESSO
- Quantity:
- Payment:
- Shipping:
Inventory:355
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6361PUT46+ 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 instrumentation and industrial controllers requiring reliable power-up/down sequencing.
For engineers reviewing the MAX6361PUT46+ datasheet, MAX6361PUT46+ pinout, MAX6361PUT46+ application, or MAX6361PUT46+ equivalent, key selection criteria include guaranteed reset assertion down to 1.2V VCC/VBATT, ±20mV hysteresis for battery switchover, debounced MR input with internal 20kΩ pull-up, and SOT23-6 package compatibility with space-constrained embedded designs.
Technical Context
The MAX6361PUT46+ integrates precision voltage monitoring, manual reset control, and battery-backed power path management in a single BiCMOS IC. Its reset comparator uses a trimmed bandgap reference to achieve ±1.5% threshold accuracy over -40°C to +85°C, and the MR input includes internal debouncing logic eliminating external RC networks.
It implements dual-supply operation: OUT sources from VCC when above 4.63V, and automatically switches to BATT when VCC falls below (VBATT − 0.2V) with 40mV hysteresis. The RESET output remains asserted for ≥150ms after VCC recovery, ensuring µP initialization completes before execution resumes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V (factory preset, ±1.5% over temperature) - ensures reliable detection of +5V rail collapse before µP malfunction. |
| Supply Voltage Range | +1.2V to +5.5V - supports operation during deep brownout and battery-backup mode without latch-up. |
| Reset Timeout Period | 150ms minimum - guarantees sufficient hold time for µP power-on reset sequence completion. |
| Supply Current (VCC) | 15µA typical at +25°C - enables multi-year battery life in always-on backup applications. |
| Battery Standby Current | 0.05µA max at -40°C to +85°C - minimizes drain on coin-cell batteries during extended storage. |
| MR Input Pull-Up | 20kΩ internal to VCC - eliminates need for external resistor; compatible with TTL/CMOS logic drive. |
| Output Type | Active-low open-drain RESET - allows wired-OR configuration with other reset sources and flexible voltage-level translation. |
Pinout & Package
Package: 6-pin SOT23 (U6-1 outline, 2.9mm × 1.6mm × 1.1mm height), RoHS-compliant lead-free (+T suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low open-drain reset output | Asserts low during VCC < 4.63V, MR low, or power failure; requires external pull-up for logic-high state. |
| 2 - GND | Ground reference | Common return for VCC, BATT, and all internal comparators; must be low-impedance connection. |
| 3 - MR | Manual reset input | Logic-low assertion triggers reset; internal 20kΩ pull-up to VCC; debounced internally - no external RC needed. |
| 4 - VCC | Main supply input | Primary power source; powers internal circuitry and supplies OUT when above reset threshold. |
| 5 - OUT | Power output | Delivers regulated power to SRAM; sourced from VCC if >4.63V, else from BATT if VBATT > (VCC + 0.2V). |
| 6 - BATT | Backup battery input | Connects to coin cell or supercap; enables seamless switchover when VCC fails; draws <1µA in standby. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 4.63V reset threshold | ±1.5% accuracy over full temperature range eliminates calibration overhead in production test. |
| Integrated MR debouncing | Eliminates need for external RC filter or firmware debounce, reducing BOM count and PCB area. |
| Guaranteed reset operation down to 1.2V | Ensures valid reset signaling even during severe brownout or battery depletion scenarios. |
| 40mV hysteresis on battery switchover | Prevents oscillation during slow VCC ramp-down; enables clean transition between main and backup power. |
| Low 15µA quiescent current | Extends battery life in always-on backup systems - e.g., 10-year operation on CR2032 at 2.8V. |
Applications
| Portable Medical Instrumentation | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Handheld blood glucose meters retain calibration data in SRAM during battery replacement or low-voltage shutdown. IC Role / Device Role / Timing Role: Supervises main 3.3V rail and asserts reset while switching SRAM power from VCC to backup lithium coin cell. Use Value: Prevents data corruption during power transitions; 150ms reset timeout ensures MCU completes safe shutdown before SRAM isolation. |
Use Scenario: Remote I/O modules in factory automation maintain real-time clock and configuration registers during AC power interruption. IC Role / Device Role / Timing Role: Monitors 5V system rail and activates battery backup to preserve volatile memory contents during brownout events. Use Value: Enables uninterrupted operation for up to 72 hours on backup power; 4.63V threshold matches standard 5V supply tolerance limits. |
| Smart Energy Meters | POS Terminal Security Modules |
Use Scenario: Electricity meters log consumption data to SRAM during grid voltage sags or meter tampering attempts. IC Role / Device Role / Timing Role: Detects VCC drop below 4.63V and initiates controlled SRAM backup via BATT-to-OUT switchover. Use Value: Guarantees data integrity during transient faults; 0.05µA battery standby current extends 10-year meter lifetime. |
Use Scenario: Payment terminals secure cryptographic keys in SRAM during unexpected AC loss or physical intrusion. IC Role / Device Role / Timing Role: Provides hardware-enforced reset and battery-backed SRAM retention to prevent key exposure during power attack. Use Value: Meets PCI PTS v6.0 requirements for secure memory retention; MR input enables tamper-triggered emergency wipe. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6361HUT46+ | Same 4.63V threshold and MR function, but active-high push-pull RESET output instead of open-drain. | Requires no external pull-up; incompatible with wired-OR reset buses or level-shifting interfaces. | Select when driving a single µP reset pin directly and board layout prohibits external pull-up resistors. |
| TPS3808G33DBVR | 3.3V fixed reset threshold, 350ms timeout, 2.9µA supply current; no battery switchover or MR input. | Designed for simple power-good monitoring only; lacks backup power management capability. | Choose only for basic 3.3V rail supervision where battery backup and manual reset are unnecessary. |
Compared with MAX6361PUT46+, MAX6361HUT46+ offers simplified interface at the cost of bus-sharing flexibility, while TPS3808G33DBVR reduces quiescent current by 60% but omits critical battery-switchover functionality required for SRAM retention.
Availability
MAX6361PUT46+ is available at Aetrix Electronics and suitable for portable medical instrumentation, industrial PLC I/O modules, smart energy meters, and POS terminal security modules requiring stable component supply across long product lifecycles.
Supply support for MAX6361PUT46+ 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 connectivity in demanding industrial and automotive environments.
The MAX6361–MAX6364 family targets ultra-low-power microprocessor supervision with integrated battery backup, specifically engineered for SRAM retention in portable, battery-powered, and mission-critical embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX6361PUT46+?
The MAX6361PUT46+ has a factory-trimmed reset threshold of 4.63V, with guaranteed accuracy of ±1.5% over the full operating temperature range (-40°C to +85°C). This value is confirmed in the Electrical Characteristics table of the official datasheet and applies specifically to the "46" suffix variant. The MAX6361PUT46+ uses this precise threshold to reliably detect failure of standard +5V power rails before microprocessor malfunction occurs.
Does the MAX6361PUT46+ support battery switchover, and how does it work?
Yes, the MAX6361PUT46+ supports automatic battery switchover via its BATT and OUT pins. When VCC falls below the 4.63V reset threshold and VBATT exceeds (VCC + 0.2V), the device connects the backup battery to OUT to maintain SRAM power. A 40mV hysteresis prevents oscillation during slow VCC decay. The MAX6361PUT46+ draws only 0.05µA from the battery in standby, enabling multi-year operation on coin cells.
Can the manual reset input (MR) of the MAX6361PUT46+ be left unconnected?
Yes, the MR pin of the MAX6361PUT46+ features an internal 20kΩ pull-up resistor to VCC, so it may be left floating or tied directly to VCC if manual reset functionality is not required. When used, a momentary switch to GND provides debounced reset initiation without external components. The MAX6361PUT46+ guarantees reset assertion for ≥150ms after MR returns high, ensuring robust µP initialization.
What package type and footprint does the MAX6361PUT46+ use?
The MAX6361PUT46+ uses a 6-pin SOT23 package (outline U6-1, land pattern 90-0175), measuring 2.9mm × 1.6mm × 1.1mm. The "+T" suffix denotes RoHS-compliant lead-free construction. This compact footprint supports high-density PCB layouts in space-constrained applications like handheld instruments and smart meters, and is compatible with standard SOT23 reflow profiles.
Is the MAX6361PUT46+ suitable for operation down to 1.2V supply voltage?
Yes, the MAX6361PUT46+ is fully specified to operate from +1.2V to +5.5V on both VCC and VBATT inputs. Its internal comparators and reset logic remain functional and guaranteed at 1.2V, enabling reliable supervision during deep brownout conditions and battery depletion. This capability is explicitly verified in the Absolute Maximum Ratings and Electrical Characteristics sections of the MAX6361PUT46+ datasheet.
MAX6361PUT46+ 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:
- Power Supply Monitor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- Output:
- Open Drain or Open Collector
- 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
MAX6361PUT46+ FAQ
1.How can I place an order for MAX6361PUT46+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6361PUT46+ 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 MAX6361PUT46+ reliable?
The price and inventory of MAX6361PUT46+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6361PUT46+ is usually 5 days.
3.What payment methods are accepted for MAX6361PUT46+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6361PUT46+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6361PUT46+?
MAX6361PUT46+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6361PUT46+ 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 MAX6361PUT46+?
For technical support, including MAX6361PUT46+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6361PUT46+ requirements.
6.How does Aetrix verify that MAX6361PUT46+ is sourced from the original manufacturer or authorized distributors?
All MAX6361PUT46+ 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 MAX6361PUT46+ meets industry standards.
7.What is the process for return or replacement of MAX6361PUT46+?
All MAX6361PUT46+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6361PUT46+, 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 MAX6361PUT46+ part is unused and in its original packaging.
Return procedure for MAX6361PUT46+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6361PUT46+ Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
