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Analog Devices Inc./Maxim Integrated MAX6306UK30D1+T
- Part No.:
- MAX6306UK30D1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6306UK30D1+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:843
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Product details
Overview
The MAX6306UK30D1+T from Maxim Integrated is a 5-pin SOT23 programmable microprocessor supervisory circuit that monitors VCC supply voltage and provides a reset signal when VCC falls below 3.0V (±2.5% over temperature), with a factory-programmed 1ms minimum reset timeout period and manual-reset input support. It features guaranteed RESET assertion down to VCC = 1V, 8µA supply current, and immunity to fast VCC transients - ideal for portable 3.3V/5V multivoltage systems requiring reliable power-on and brownout reset.
For engineers reviewing the MAX6306UK30D1+T datasheet, MAX6306UK30D1+T pinout, MAX6306UK30D1+T application, or MAX6306UK30D1+T equivalent, key selection considerations include its 3.0V factory-trimmed VCC threshold, SOT23-5 package compatibility, manual-reset functionality, transient-immune supervision architecture, and lead-free RoHS-compliant packaging.
Technical Context
The MAX6306UK30D1+T uses an internal factory-trimmed resistor divider to monitor VCC against a precision 3.0V threshold, with ±2.5% tolerance over -40°C to +85°C. It integrates a manual-reset (MR) input with 63.5kΩ internal pull-up and guarantees valid reset output down to VCC = 1V.
This device asserts an active-low open-drain RESET output upon VCC undervoltage or MR activation, holding reset for ≥1ms after recovery or MR release. Its design ignores short-duration negative-going VCC transients - up to ~10µs at 3.0V overdrive - and supports external RST IN undervoltage monitoring via resistor divider.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 3.0V ±2.5% over -40°C to +85°C - factory-trimmed for stable trip point in 3.3V systems |
| Reset Timeout Period | 1ms minimum - ensures sufficient processor initialization time after power stabilization |
| Supply Current | 8µA typical at +25°C - enables battery-powered operation with minimal quiescent drain |
| Operating Voltage Range | VCC = (VTH + 2.5%) to +5.5V - minimum operating VCC = 3.075V for reliable supervision |
| RESET Output Type | Active-low open-drain - allows flexible pull-up configuration and bidirectional µP reset pin interfacing |
| Manual-Reset Input | MR with 63.5kΩ internal pull-up - supports momentary switch interface without external components |
| Transient Immunity | Immune to VCC glitches ≤10µs at 3.0V overdrive - prevents spurious resets in noisy environments |
Pinout & Package
Package: 5-pin SOT23 (U5+1), RoHS-compliant lead-free, surface-mount compatible with standard 0.95mm pitch footprint (land pattern 90-0174).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low open-drain reset output | Drives low during reset; requires external pull-up; interfaces directly with µP reset pins |
| 2 - GND | System ground reference | Common return path for all internal comparators and reset generator |
| 3 - RST IN | Adjustable undervoltage reset input | Monitors external rail via resistor divider; asserts reset if input falls below 1.23V threshold |
| 4 - MR | Manual-reset input | Pull low to force reset; internal 63.5kΩ pull-up enables switch-only implementation |
| 5 - VCC | Main supply input and monitored rail | Power source and primary supervision target; also powers internal reference and logic |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-set VCC threshold | 3.0V ±2.5% over full industrial temperature range - eliminates external resistor calibration |
| No external components required | Self-contained supervision with internal reference, timer, and pull-up - reduces BOM count and layout area |
| Guaranteed RESET validity to VCC = 1V | Ensures deterministic reset behavior during deep brownout - critical for fail-safe embedded control |
| Immunity to short VCC transients | Rejects glitches <10µs duration - avoids false resets in switching power supply environments |
| Manual-reset input with internal pull-up | Enables hardware reset via simple SPST switch - no external resistor needed for basic implementation |
Applications
| Portable Computers | Industrial Controllers |
|---|---|
Use Scenario: Power sequencing and brownout protection in battery-backed laptop mainboards with dual 3.3V/5V rails. IC Role / Device Role / Timing Role: Primary VCC supervisor asserting reset on 3.3V rail collapse, with MR for user-initiated reboot. Use Value: Prevents corrupted firmware execution during AC adapter disconnect or battery sag using factory-calibrated 3.0V threshold. |
Use Scenario: Reliable startup and fault recovery in programmable logic controllers exposed to 24V field wiring noise. IC Role / Device Role / Timing Role: Monitors 5V logic supply while supporting external 24V-sensed RST IN input for fieldbus voltage faults. Use Value: Combines precise local supply supervision with configurable external rail monitoring - eliminating need for discrete comparator circuits. |
| Medical Handheld Devices | Multivoltage Embedded Systems |
Use Scenario: Power integrity assurance in battery-operated ultrasound probes with strict low-power requirements. IC Role / Device Role / Timing Role: Low-quiescent-current (8µA) supervisor enabling >1-year shelf life; MR supports clinical staff reset without power cycle. Use Value: Extends battery runtime while maintaining fail-safe reset coverage across temperature and aging variations. |
Use Scenario: Coordinated reset generation in FPGA-based test equipment with 1.2V core, 3.3V I/O, and 5V analog supplies. IC Role / Device Role / Timing Role: Supervises 3.3V I/O rail as primary trigger; RST IN monitors 5V analog rail; MR enables lab technician intervention. Use Value: Single-chip solution replaces multiple discrete supervisors - reducing PCB area and inter-rail timing skew. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6306UK30D2+T | 20ms minimum reset timeout vs. 1ms - longer delay for slower processors or complex boot sequences | Used where extended reset hold time is required for FPGA configuration or EEPROM initialization | Select when system boot firmware needs >1ms of guaranteed reset assertion before release |
| TPS3808G30DBVR | Push-pull active-low RESET output; 3.0V threshold with ±0.5% initial accuracy; 1.5µA supply current | Lacks manual-reset input and adjustable RST IN; optimized for ultra-low-power always-on monitoring | Choose for lowest quiescent current and tighter threshold tolerance - but only if MR and secondary rail monitoring are unnecessary |
Compared with MAX6306UK30D1+T, the D2 variant offers longer reset hold time for complex boot flows, while the TPS3808G30DBVR delivers superior threshold accuracy and lower ICC but omits manual reset and external rail supervision - making MAX6306UK30D1+T optimal for cost-sensitive, feature-complete 3.3V system supervision.
Availability
The MAX6306UK30D1+T is available at Aetrix Electronics and suitable for portable computers, industrial controllers, and medical handheld devices requiring stable component supply with lead-free compliance and SOT23-5 footprint consistency.
Supply support for MAX6306UK30D1+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 power, sensing, and interface applications - with emphasis on reliability, integration, and low-power operation.
The MAX6305–MAX6313 family was engineered specifically for multivoltage microprocessor supervision in space-constrained, battery-sensitive systems - delivering factory-programmable thresholds, manual reset, and transient immunity in a 5-pin SOT23 package.
FAQ
What is the exact factory-programmed reset threshold voltage for the MAX6306UK30D1+T?
The MAX6306UK30D1+T has a factory-trimmed VCC reset threshold of 3.0V, specified with ±2.5% tolerance over the full operating temperature range of -40°C to +85°C. This value is laser-trimmed during production and documented in the Electrical Characteristics table under "Reset Threshold (VTH)" for MAX6306/MAX6307 variants. The "30" in the part number explicitly denotes the 3.0V nominal threshold.
Does the MAX6306UK30D1+T support manual reset, and how is it implemented?
Yes, the MAX6306UK30D1+T includes a dedicated MR (manual-reset) input on pin 4. It features an internal 63.5kΩ pull-up resistor, allowing direct connection of a normally-open momentary switch to ground. When pulled low, MR forces RESET assertion for the full timeout period (≥1ms) after release. No external components are required for basic implementation, and the pin accepts TTL- or CMOS-level logic depending on system VCC.
What is the minimum VCC voltage at which the MAX6306UK30D1+T guarantees valid RESET output?
The MAX6306UK30D1+T guarantees valid RESET output down to VCC = 1.0V, as confirmed in the Electrical Characteristics table under "RESET Output Voltage (VOL)" conditions. Below this voltage, the open-drain driver's sink capability degrades significantly. For applications requiring asserted RESET down to 0V, an external 100kΩ pull-down resistor on the RESET line is recommended per the Applications Information section.
Can the MAX6306UK30D1+T monitor voltages other than VCC?
Yes, the MAX6306UK30D1+T includes an adjustable RST IN input (pin 3) that compares an external voltage - set by a resistor divider - against an internal 1.23V reference. This allows supervision of secondary rails such as 5V, 12V, or 24V. The device asserts RESET if either VCC falls below 3.0V or the RST IN voltage drops below its programmed threshold, providing dual-rail fault coverage in a single IC.
What is the meaning of "D1" in the MAX6306UK30D1+T part number?
The "D1" suffix in MAX6306UK30D1+T specifies the factory-programmed reset timeout period: D1 = 1ms minimum, D2 = 20ms minimum, D3 = 140ms minimum, and D4 = 1120ms minimum. This internal timer holds RESET active after VCC recovery or MR release, ensuring sufficient time for microprocessor initialization before code execution resumes. The D1 option is optimized for fast-booting 3.3V systems.
MAX6306UK30D1+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 3V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6306UK30D1+T FAQ
1.How can I place an order for MAX6306UK30D1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6306UK30D1+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 MAX6306UK30D1+T reliable?
The price and inventory of MAX6306UK30D1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6306UK30D1+T is usually 5 days.
3.What payment methods are accepted for MAX6306UK30D1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6306UK30D1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6306UK30D1+T?
MAX6306UK30D1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6306UK30D1+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 MAX6306UK30D1+T?
For technical support, including MAX6306UK30D1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6306UK30D1+T requirements.
6.How does Aetrix verify that MAX6306UK30D1+T is sourced from the original manufacturer or authorized distributors?
All MAX6306UK30D1+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 MAX6306UK30D1+T meets industry standards.
7.What is the process for return or replacement of MAX6306UK30D1+T?
All MAX6306UK30D1+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6306UK30D1+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 MAX6306UK30D1+T part is unused and in its original packaging.
Return procedure for MAX6306UK30D1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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