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Analog Devices Inc./Maxim Integrated MAX6306UK47D3+T
- Part No.:
- MAX6306UK47D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6306UK47D3+T.pdf
- Description:
- IC PROGRAM 4.700V RESET SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,318
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Product details
Overview
The MAX6306UK47D3+T from Maxim Integrated is a precision CMOS microprocessor supervisory circuit in SOT23-5 package, designed to monitor VCC supply voltage and assert an active-low reset when VCC falls below 4.7V ±2.5% (at -40°C to +85°C), with factory-programmed 140ms minimum reset timeout delay. It features manual-reset input (MR), guaranteed RESET validity down to VCC = 1V, and immunity to fast VCC transients - ideal for multivoltage embedded systems requiring reliable power-on and brownout reset.
For engineers reviewing the MAX6306UK47D3+T datasheet, MAX6306UK47D3+T pinout, MAX6306UK47D3+T application, or MAX6306UK47D3+T equivalent, key selection criteria include its 4.7V factory-trimmed threshold, 140ms timeout, SOT23-5 footprint, MR functionality, and operation across -40°C to +85°C industrial temperature range.
Technical Context
The MAX6306UK47D3+T monitors VCC via an internal factory-trimmed resistor divider, eliminating external components for threshold setting. Its reset generator includes a precision bandgap reference (1.23V) and hysteresis (2.5mV on RST IN_), enabling stable undervoltage detection with ±2.5% threshold tolerance over full temperature range.
It integrates a manual-reset input with 63.5kΩ internal pull-up, TTL/CMOS-compatible logic levels, and 1.5µs minimum pulse width guarantee. The open-drain RESET output sinks ≥3.2mA at VCC > 4.25V and remains valid down to VCC = 1V, supporting robust interface with bidirectional µP reset pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 4.7V ±2.5% (–40°C to +85°C); factory-trimmed for no external resistor network required |
| Reset Timeout Period | 140ms minimum (D3 variant); ensures sufficient hold time for processor initialization |
| Supply Current | 8µA typical at +25°C; enables battery-powered and low-power portable designs |
| Operating Temperature | –40°C to +85°C; qualified for industrial-grade embedded control applications |
| RESET Output Type | Active-low open-drain; compatible with bidirectional µP reset I/O and external pull-up |
| MR Input Logic | TTL/CMOS-compatible with internal 63.5kΩ pull-up; supports momentary switch or logic-driven reset |
| VCC Range | 2.5V to 5.5V; supports 3.3V and 5V systems without level-shifting |
Pinout & Package
SOT23-5 surface-mount package (5-pin, 1.6mm × 2.9mm × 1.1mm), RoHS-compliant lead-free construction (+T suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low open-drain reset output | Drives µP reset line low during fault; requires external pull-up; valid down to VCC = 1V |
| 2 - GND | System ground reference | Common return path for all internal comparators and reset logic |
| 3 - RST IN | Adjustable undervoltage reset input | Monitors secondary supply via external resistor divider; threshold referenced to 1.23V internal bandgap |
| 4 - MR | Manual-reset input | Pull low to force reset; internal 63.5kΩ pull-up allows direct switch connection; 1.5µs min pulse width |
| 5 - VCC | Main supply input and monitored rail | Power source and primary voltage monitor; internal trimmed divider sets 4.7V reset threshold |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-set VCC threshold | 4.7V ±2.5% over –40°C to +85°C; eliminates calibration and external resistors |
| Guaranteed RESET validity to VCC = 1V | Ensures deterministic reset assertion during deep brownout, before µP loses functional state |
| Immunity to short VCC transients | Rejects negative-going glitches ≤100µs (at 50mV overdrive); prevents spurious resets in noisy environments |
| No external components required | Self-contained supervision: internal reference, timer, comparator, and pull-up eliminate BOM cost and layout area |
| Manual-reset input with internal pull-up | 63.5kΩ integrated pull-up enables single-switch reset implementation without external resistor |
Applications
| Industrial PLC Controller | Medical Portable Monitor |
|---|---|
Use Scenario: Power sequencing and brownout protection in DIN-rail mounted programmable logic controllers with dual 5V/24V supplies. IC Role / Device Role / Timing Role: Primary VCC supervisor for 5V logic rail; asserts reset if 5V drops below 4.7V or if MR is activated by front-panel service switch. Use Value: Prevents firmware corruption during field power fluctuations; 140ms timeout ensures complete FPGA configuration before release. |
Use Scenario: Battery-backed vital signs monitor requiring fail-safe startup and emergency reset after low-battery recovery. IC Role / Device Role / Timing Role: Monitors main 3.3V system rail and provides MR-triggered reset via clinician button; RST IN used for backup battery voltage check. Use Value: 8µA quiescent current extends battery life; guaranteed RESET down to VCC = 1V ensures safe shutdown before data loss. |
| Automotive Body Control Module | Network Edge Router |
Use Scenario: Cold-cranking resilience in 12V automotive body electronics where VCC dips to 4.5V during engine start. IC Role / Device Role / Timing Role: Supervises 5V derived rail; ignores sub-100µs transients but triggers reset if dip exceeds 140ms duration below 4.7V. Use Value: Eliminates false resets during cranking while ensuring deterministic recovery post-start. |
Use Scenario: Dual-rail supervision (5V core, 3.3V I/O) in fanless enterprise routers deployed in temperature-variable telecom cabinets. IC Role / Device Role / Timing Role: Primary 5V supervisor (4.7V threshold); RST IN monitors 3.3V rail via divider; MR enables remote reset via GPIO-controlled FET. Use Value: Industrial temp grade (–40°C to +85°C) and ±2.5% threshold stability ensure reliability across ambient extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6306UK47D3-T | Same electrical specs and pinout, but leaded (Pb-containing) packaging instead of lead-free (+T) | Not suitable for RoHS-compliant production; requires Pb-based solder process | Select only if legacy assembly line mandates Pb solder; otherwise prefer +T version |
| TPS3808G33DBVR | 3.3V fixed threshold, 200ms timeout, push-pull output; no MR or RST IN inputs | Lacks manual reset and secondary supply monitoring; simpler single-rail use case | Choose when only basic 3.3V supervision is needed and MR/RST IN are unnecessary |
Compared with MAX6306UK47D3-T, the +T variant offers identical performance with RoHS compliance; versus TPS3808G33DBVR, MAX6306UK47D3+T provides higher threshold flexibility, MR support, and dual-supply capability at the cost of fixed 4.7V setpoint.
Availability
MAX6306UK47D3+T is available at Aetrix Electronics and suitable for industrial PLC controllers, medical portable monitors, automotive body control modules, network edge routers, and battery-powered instrumentation requiring stable component supply across extended temperature ranges.
Supply support for MAX6306UK47D3+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, computing, and communications markets.
The MAX6305–MAX6313 family was designed specifically for multivoltage microprocessor supervision in space-constrained, low-power embedded systems - delivering precision reset thresholds, transient immunity, and minimal external component count in SOT23-5.
FAQ
What is the exact factory-programmed reset threshold voltage for MAX6306UK47D3+T?
The MAX6306UK47D3+T has a nominal VCC reset threshold of 4.7V, with tolerance of ±2.5% over the full operating temperature range (–40°C to +85°C). This value is factory-trimmed using an internal resistor divider and does not require external calibration. The "47" in the part number directly encodes the 4.7V threshold per Maxim's ordering convention.
Does MAX6306UK47D3+T support manual reset functionality, and how is it implemented?
Yes, MAX6306UK47D3+T 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. The pin features an internal 63.5kΩ pull-up resistor, allowing direct connection to a normally-open momentary switch tied to ground - no external components are needed for basic manual reset implementation.
What is the guaranteed operating voltage range for MAX6306UK47D3+T, and how low can VCC go while maintaining valid RESET output?
MAX6306UK47D3+T operates from VCC = 2.5V to 5.5V. Critically, its RESET output is guaranteed valid (logic-low when asserted) down to VCC = 1V - a key design feature that ensures deterministic reset behavior during deep brownout conditions before the microprocessor loses functional integrity.
Can MAX6306UK47D3+T monitor a second voltage rail besides VCC?
Yes, MAX6306UK47D3+T includes a dedicated RST IN input (pin 3) for monitoring a secondary supply. By connecting an external resistor divider between the target rail and ground, the device compares the divided voltage to its internal 1.23V reference. This enables precise undervoltage detection on a second rail - for example, supervising a 3.3V I/O supply while VCC monitors the 5V core rail.
What package type and RoHS status does MAX6306UK47D3+T use?
MAX6306UK47D3+T is supplied in a 5-pin SOT23 package (1.6mm × 2.9mm × 1.1mm) with lead-free (RoHS-compliant) termination, indicated by the "+T" suffix. The package meets JEDEC MO-178 standards and is optimized for automated surface-mount assembly with tape-and-reel delivery.
MAX6306UK47D3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- 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+T FAQ
1.How can I place an order for MAX6306UK47D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6306UK47D3+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 MAX6306UK47D3+T reliable?
The price and inventory of MAX6306UK47D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6306UK47D3+T is usually 5 days.
3.What payment methods are accepted for MAX6306UK47D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6306UK47D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6306UK47D3+T?
MAX6306UK47D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6306UK47D3+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 MAX6306UK47D3+T?
For technical support, including MAX6306UK47D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6306UK47D3+T requirements.
6.How does Aetrix verify that MAX6306UK47D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6306UK47D3+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 MAX6306UK47D3+T meets industry standards.
7.What is the process for return or replacement of MAX6306UK47D3+T?
All MAX6306UK47D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6306UK47D3+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 MAX6306UK47D3+T part is unused and in its original packaging.
Return procedure for MAX6306UK47D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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