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Analog Devices Inc./Maxim Integrated MAX6306UK47D3+
- Part No.:
- MAX6306UK47D3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6306UK47D3+.pdf
- Description:
- MAX6306 5-PIN, MULTIPLE-INPUT, P
- Quantity:
- Payment:
- Shipping:
Inventory:4,590
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Product details
Overview
MAX6306UK47D3+ from Maxim Integrated is a 5-pin SOT23 programmable supervisory IC that monitors VCC for undervoltage conditions and provides a push/pull active-low reset output. It features a factory-set 4.7V reset threshold (±2.5% over temperature), 140ms minimum reset timeout, manual-reset input (MR), and guaranteed RESET validity down to VCC = 1V. Used in multivoltage embedded systems requiring reliable power-on and brownout reset.
For engineers reviewing the MAX6306UK47D3+ datasheet, MAX6306UK47D3+ pinout, MAX6306UK47D3+ application, or MAX6306UK47D3+ equivalent, key selection criteria include its 4.7V VCC monitor threshold, 140ms timeout, MR functionality, immunity to fast transients, and operation across 0°C to +70°C with 8µA supply current.
Technical Context
The MAX6306UK47D3+ uses an internal factory-trimmed voltage divider to monitor VCC against a precise 4.7V threshold, with ±2.5% tolerance over -40°C to +85°C. Its reset generator asserts active-low RESET for ≥140ms after VCC rises above threshold or after MR release.
It integrates a manual-reset input with 63.5kΩ internal pull-up, TTL/CMOS-compatible logic levels, and glitch rejection (<0.1µs). The push/pull output drives high/low without external components and remains valid down to VCC = 1V - critical for low-voltage brownout detection in portable and industrial controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 4.7V nominal, ±2.5% over -40°C to +85°C - ensures accurate 5V rail supervision with margin for ripple and drift |
| Reset Timeout Period | 140ms minimum - guarantees µP initialization time meets typical boot requirements for ARM Cortex-M and PIC microcontrollers |
| Supply Current | 8µA typical at +25°C - enables multi-year battery life in portable instrumentation and remote sensors |
| Operating Temperature | 0°C to +70°C - validated for commercial-grade computing, industrial HMI, and consumer electronics environments |
| Output Type | Active-low push/pull - eliminates need for external pull-up resistor and supports direct interface to µP reset pins |
| Manual-Reset Input | Internal 63.5kΩ pull-up, 0.3×VCC/0.7×VCC thresholds - allows momentary switch or logic-level assertion without external biasing |
| Transient Immunity | Immune to VCC glitches <140ns at 4.7V overdrive - prevents spurious resets during switching noise or ESD events |
Pinout & Package
Package: 5-pin SOT23 (U5+1), RoHS-compliant lead-free, tape-and-reel packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push/pull reset output | Drives low to assert reset; sources current when high - directly interfaces µP reset pins without pull-up |
| 2 - GND | System ground reference | Return path for internal comparators and output stage; must be low-impedance for noise immunity |
| 3 - RST IN | Adjustable undervoltage reset input | Monitors external rail via resistor divider; asserts reset if input falls below 1.23V reference |
| 4 - MR | Manual-reset input | Pull low to force reset; internal pull-up enables switch-only implementation; 1.5µs min pulse width |
| 5 - VCC | Main supply and monitored rail | Power source and primary supervision target; device operates from 1.0V to 5.5V, monitors 4.7V threshold |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed 4.7V threshold | Eliminates external resistor network and calibration effort for 5V system supervision |
| 140ms reset timeout | Meets JEDEC JESD79-4 DDR4 initialization timing and avoids premature µP release during power ramp |
| Guaranteed RESET validity to VCC = 1V | Ensures deterministic reset behavior during deep brownout - critical for fail-safe shutdown in PLCs |
| No external components required | Reduces BOM count and PCB area; simplifies layout and improves reliability in space-constrained modules |
| MR input with internal pull-up | Enables single-pole momentary switch connection - no support circuitry needed for field service reset |
Applications
| Industrial PLC Power Monitoring | Embedded PC 5V/3.3V Sequencing |
|---|---|
Use Scenario: Supervises main 5V supply in programmable logic controller backplane where brownout must trigger controlled I/O shutdown. IC Role / Device Role / Timing Role: Primary VCC supervisor asserting active-low RESET to ARM-based controller; timeout ensures firmware completes watchdog disable before peripheral enable. Use Value: Prevents metastability in digital I/O drivers during partial power loss by guaranteeing >140ms reset hold time until stable 5V is restored. |
Use Scenario: Monitors 5V rail in fanless embedded PC while 3.3V is derived via LDO; detects 5V collapse before 3.3V drops. IC Role / Device Role / Timing Role: Standalone VCC supervisor with MR input - used alongside separate 3.3V supervisor to coordinate dual-rail power-up sequence. Use Value: Factory-set 4.7V threshold provides 300mV margin above 5V nominal, rejecting ripple while triggering on true failure - avoids false resets during load transients. |
| Portable Test Instrument Reset Control | Battery-Powered Data Logger Supervision |
Use Scenario: Ensures clean reset of microcontroller in handheld oscilloscope during battery swap or low-battery cutoff. IC Role / Device Role / Timing Role: Dual-role supervisor: monitors main 5V rail and accepts MR signal from front-panel reset button. Use Value: 8µA quiescent current extends battery life; MR pin's internal pull-up eliminates discrete resistor, reducing component count in compact enclosure. |
Use Scenario: Supervises 5V boost converter output in solar-charged environmental sensor node operating intermittently for years. IC Role / Device Role / Timing Role: Low-power VCC monitor with guaranteed reset assertion down to VCC = 1V - detects end-of-life battery sag before data corruption. Use Value: Immunity to sub-200ns transients prevents false resets from RF interference or switching regulator noise in unshielded enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6306UK47D2+ | 20ms minimum reset timeout vs. 140ms | Insufficient for µP boot sequences requiring >100ms initialization | Select only for fast-recovery systems like real-time motor controllers where minimal reset hold is acceptable |
| TLV803EC47DBVR | 4.7V threshold, open-drain output, no MR input, 35µA ICC | Lacks manual reset and higher supply current reduces battery life | Use where board space permits external pull-up and MR is not required; verify µP reset pin compatibility with open-drain drive |
Compared with MAX6306UK47D2+, the MAX6306UK47D3+ provides 7× longer reset hold time for robust firmware initialization; compared with TLV803EC47DBVR, it delivers lower power, integrated MR, and push/pull drive - eliminating design compromises in battery-powered and serviceable equipment.
Availability
MAX6306UK47D3+ is available at Aetrix Electronics and suitable for industrial PLCs, embedded PCs, portable test instruments, and battery-powered data loggers requiring stable component supply and long-term production continuity.
Supply support for MAX6306UK47D3+ 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, computing, and communications systems.
The MAX6305–MAX6313 family delivers programmable, low-power supervisory circuits optimized for multivoltage embedded systems - specifically engineered to replace discrete reset solutions with guaranteed timing, temperature stability, and transient immunity.
FAQ
What is the factory-set reset threshold voltage for MAX6306UK47D3+?
The MAX6306UK47D3+ has a factory-set VCC reset threshold of 4.7V nominal, with ±2.5% tolerance over the full operating temperature range (-40°C to +85°C). This value is laser-trimmed during manufacturing and does not require external configuration. The '47' in the part number explicitly denotes the 4.7V threshold per Maxim's ordering convention.
Does MAX6306UK47D3+ support manual reset functionality?
Yes, the MAX6306UK47D3+ includes a dedicated MR (manual-reset) input on pin 4. Pulling MR low forces an immediate reset assertion, which remains active for the full 140ms timeout period after MR returns high. An internal 63.5kΩ pull-up resistor allows direct connection of a momentary switch to ground - no external components are required for basic manual reset implementation.
What is the minimum VCC voltage at which MAX6306UK47D3+ guarantees valid RESET output?
The MAX6306UK47D3+ guarantees valid RESET output down to VCC = 1V. Below this level, the push/pull driver's sourcing/sinking capability degrades, but for all VCC ≥ 1V, RESET maintains a defined logic state (low when asserted, high when deasserted) - a key requirement for brownout detection in safety-critical embedded control.
Can MAX6306UK47D3+ monitor voltages other than VCC?
Yes, the MAX6306UK47D3+ includes pin 3 (RST IN) as an adjustable undervoltage reset input. By connecting an external resistor divider, users can configure monitoring of secondary rails (e.g., 3.3V, 2.5V) independently of the 4.7V VCC threshold. The internal comparator references a stable 1.23V, enabling precise custom thresholds without trimming.
What package type and RoHS status does MAX6306UK47D3+ use?
The MAX6306UK47D3+ is supplied in a 5-pin SOT23 package (package code U5+1) with lead-free, RoHS-compliant construction. The '+' suffix in the part number confirms compliance. It ships in tape-and-reel format only, with land pattern 90-0174 and outline 21-0057 per Maxim's package documentation.
MAX6306UK47D3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 4.7V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6306UK47D3+ FAQ
1.How can I place an order for MAX6306UK47D3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6306UK47D3+ 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 MAX6306UK47D3+ reliable?
The price and inventory of MAX6306UK47D3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6306UK47D3+ is usually 5 days.
3.What payment methods are accepted for MAX6306UK47D3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6306UK47D3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6306UK47D3+?
MAX6306UK47D3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6306UK47D3+ 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 MAX6306UK47D3+?
For technical support, including MAX6306UK47D3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6306UK47D3+ requirements.
6.How does Aetrix verify that MAX6306UK47D3+ is sourced from the original manufacturer or authorized distributors?
All MAX6306UK47D3+ 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 MAX6306UK47D3+ meets industry standards.
7.What is the process for return or replacement of MAX6306UK47D3+?
All MAX6306UK47D3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6306UK47D3+, 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 MAX6306UK47D3+ part is unused and in its original packaging.
Return procedure for MAX6306UK47D3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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