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Analog Devices Inc./Maxim Integrated MAX6306EUK25D1+
- Part No.:
- MAX6306EUK25D1+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6306EUK25D1+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,120
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Product details
Overview
MAX6306EUK25D1+ from Maxim Integrated is a precision 5-pin SOT23 programmable reset IC designed to monitor VCC supply voltage and assert an active-low push/pull RESET signal when VCC falls below 2.5V ±2.5% (–40°C to +85°C), with factory-programmed 1ms minimum reset timeout, manual reset input, and guaranteed RESET validity down to VCC = 1V. It supports multivoltage systems including 3.3V/5V portable computing and embedded controllers.
For engineers reviewing the MAX6306EUK25D1+ datasheet, MAX6306EUK25D1+ pinout, MAX6306EUK25D1+ application, or MAX6306EUK25D1+ equivalent, this page delivers verified technical context, exact pin functions, real-world use scenarios, and validated alternative options - all grounded in Maxim's official documentation for industrial-grade power-supply supervision.
Technical Context
The MAX6306EUK25D1+ uses an internal factory-trimmed resistor divider to monitor VCC against a precise 2.5V threshold, with ±2.5% tolerance over –40°C to +85°C and 40ppm/°C temperature coefficient. Its reset logic incorporates a monolithic timer that guarantees ≥1ms assertion after VCC recovery or MR release.
This device integrates a manual-reset input (MR) with internal 63.5kΩ pull-up, TTL/CMOS-compatible logic thresholds, and immunity to fast VCC transients - enabling robust brownout detection without external components in battery-powered or noise-prone environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.5V ±2.5% (–40°C to +85°C); ensures reliable brownout detection at nominal 3.3V system rails |
| Reset Timeout Period | 1ms minimum; provides sufficient hold time for microprocessor initialization after power stabilization |
| Supply Current | 8µA typical at +25°C; enables multi-year operation in coin-cell–powered portable instruments |
| RESET Output Type | Active-low push/pull; drives CMOS/TTL loads directly without external pull-up resistor |
| Operating Temperature | –40°C to +85°C; qualified for industrial and automotive-adjacent embedded control applications |
| MR Input Logic | VIH = 0.7×VCC (VTH < 4.0V); supports direct interface with 3.3V or 5V logic without level-shifting |
| RESET Validity Range | Guaranteed to VCC = 1V; maintains defined logic state during deep brownout before full power collapse |
Pinout & Package
Package: 5-pin SOT23 (U5+1), RoHS-compliant lead-free, footprint compatible with JEDEC MO-178AB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push/pull reset output | Sinks 3.2mA / sources 800µA; asserts low during VCC undervoltage or MR activation |
| 2 - GND | System ground reference | Return path for internal comparators, timer, and RESET driver; must be low-impedance |
| 3 - RST IN | Adjustable undervoltage reset input | Monitors external rail via resistor divider; triggers reset if input falls below 1.23V threshold |
| 4 - MR | Manual reset input | Pulled up internally to 63.5kΩ; logic-low pulse ≥1.5µs forces reset for full timeout period |
| 5 - VCC | Main supply input | Power source and primary monitored rail; operates from 2.75V (2.5V +2.5%) to 5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-set VCC threshold | 2.5V ±2.5% over full temperature range eliminates need for external trimming or calibration |
| No external components required | Integrated voltage divider, timer, and push/pull driver enable single-chip reset supervision |
| Transient immunity | Immune to VCC glitches ≤100ns at 2.5V overdrive; prevents false resets in noisy power environments |
| Manual reset with internal pull-up | 63.5kΩ MR pull-up allows momentary switch interface without external resistor or debounce circuitry |
| Guaranteed RESET down to VCC = 1V | Ensures deterministic microcontroller behavior during deep brownout, critical for data retention safety |
Applications
| Portable Computers | Industrial Controllers |
|---|---|
Use Scenario: Power sequencing and brownout protection in fanless x86-based edge gateways with dual 3.3V/5V rails. IC Role / Device Role / Timing Role: Primary VCC supervisor asserting RESET to CPU and FPGA during 3.3V rail sag below 2.5V. Use Value: Prevents corrupted firmware execution by holding reset until both supplies stabilize post-brownout. |
Use Scenario: Reliable restart after AC line interruption in DIN-rail PLC I/O modules. IC Role / Device Role / Timing Role: Monitors 5V DC-DC output and triggers hardware reset on undervoltage, synchronized with MR button. Use Value: Eliminates watchdog timeouts by guaranteeing ≥1ms reset pulse even during rapid 5V collapse. |
| Intelligent Instruments | Battery-Powered Sensors |
Use Scenario: Power-on initialization and low-battery lockout in handheld multimeters with Li-ion supply. IC Role / Device Role / Timing Role: Supervises 3.3V LDO output and asserts RESET if battery drops below 3.0V (via RST IN divider). Use Value: Uses single 2.5V-threshold IC to cover both main rail and auxiliary battery monitoring via adjustable input. |
Use Scenario: Cold-start reliability in wireless environmental sensors powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Ensures MCU remains held in reset until regulated 3.3V rail reaches stable 2.5V threshold. Use Value: 8µA quiescent current extends shelf life; 1ms timeout prevents premature wake-up during weak battery ramp-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6306EUK25D3+ | Same 2.5V threshold and temp range, but 140ms min reset timeout vs. 1ms | Suitable for systems requiring longer reset hold time (e.g., FPGA configuration loading) | Select D3+ only if extended timeout is needed; D1+ ensures minimal reset duration for fast-boot MCUs |
| TPS3808G125DBVR | 2.5V threshold, 1ms timeout, but open-drain output and higher 12µA ICC | Requires external pull-up; less suitable for high-noise environments where push/pull drive is preferred | Choose MAX6306EUK25D1+ when direct-drive capability, lower ICC, or MR integration are design priorities |
Compared with MAX6306EUK25D3+, the MAX6306EUK25D1+ reduces reset assertion time by 99.3% - critical for low-latency boot sequences - while matching thermal performance and MR functionality; versus TPS3808G125DBVR, it delivers 33% lower supply current and eliminates external biasing overhead.
Availability
MAX6306EUK25D1+ is available at Aetrix Electronics and suitable for portable computers, industrial controllers, and intelligent instruments requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6306EUK25D1+ 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 markets.
The MAX6305–MAX6313 family delivers highly integrated, factory-programmed reset supervisors targeting multivoltage embedded systems where space, power, and reliability are constrained - especially in portable and battery-operated equipment.
FAQ
What is the exact reset threshold voltage for MAX6306EUK25D1+ over temperature?
The MAX6306EUK25D1+ has a factory-trimmed VCC reset threshold of 2.5V with ±2.5% tolerance over the full –40°C to +85°C operating range, and a temperature coefficient of 40ppm/°C. This means the actual trip point stays within 2.4375V to 2.5625V across temperature, ensuring consistent brownout detection in industrial environments where ambient conditions vary widely.
Does MAX6306EUK25D1+ require external components to function as a basic VCC supervisor?
No, the MAX6306EUK25D1+ requires no external components for core VCC supervision. Its internal factory-trimmed voltage divider, monolithic timer, and push/pull RESET driver are fully integrated. Only optional features - such as external rail monitoring via RST IN or manual reset debouncing - may add passive components, but the base 2.5V VCC supervision operates autonomously from a single 5-pin SOT23 footprint.
How does the manual reset (MR) input behave on MAX6306EUK25D1+?
The MR input on MAX6306EUK25D1+ has an internal 63.5kΩ pull-up resistor and accepts logic-low pulses ≥1.5µs to force reset. RESET remains asserted for the full 1ms timeout period after MR returns high. The input is TTL/CMOS-compatible (VIH = 0.7×VCC when VTH < 4.0V), and its ESD structure requires MR to be driven from the same supply domain as VCC to avoid forward-biasing under brownout conditions.
Can MAX6306EUK25D1+ monitor voltages other than VCC?
Yes, the MAX6306EUK25D1+ includes a dedicated RST IN pin that monitors external rails using an external resistor divider. When configured, it compares the divided voltage to an internal 1.23V reference and asserts RESET if the input falls below threshold. This enables supervision of auxiliary supplies like 12V, 24V, or battery voltage - independent of the 2.5V VCC threshold - with ±25nA input leakage preserving accuracy with megohm-level dividers.
What is the supply current consumption of MAX6306EUK25D1+ at room temperature?
The MAX6306EUK25D1+ draws 8µA typical supply current at +25°C and VCC = 5.5V, with a maximum of 16µA over temperature. This ultra-low ICC enables multi-year operation in battery-backed applications such as portable test equipment and remote sensors, and contributes to thermal stability in densely packed PCB layouts where self-heating must be minimized.
MAX6306EUK25D1+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 2.5V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6306EUK25D1+ FAQ
1.How can I place an order for MAX6306EUK25D1+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6306EUK25D1+ 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 MAX6306EUK25D1+ reliable?
The price and inventory of MAX6306EUK25D1+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6306EUK25D1+ is usually 5 days.
3.What payment methods are accepted for MAX6306EUK25D1+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6306EUK25D1+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6306EUK25D1+?
MAX6306EUK25D1+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6306EUK25D1+ 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 MAX6306EUK25D1+?
For technical support, including MAX6306EUK25D1+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6306EUK25D1+ requirements.
6.How does Aetrix verify that MAX6306EUK25D1+ is sourced from the original manufacturer or authorized distributors?
All MAX6306EUK25D1+ 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 MAX6306EUK25D1+ meets industry standards.
7.What is the process for return or replacement of MAX6306EUK25D1+?
All MAX6306EUK25D1+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6306EUK25D1+, 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 MAX6306EUK25D1+ part is unused and in its original packaging.
Return procedure for MAX6306EUK25D1+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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