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Analog Devices Inc./Maxim Integrated MAX6306EUK25D1+T
- Part No.:
- MAX6306EUK25D1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6306EUK25D1+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,970
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Product details
Overview
MAX6306EUK25D1+T from Maxim Integrated is a precision 5-pin SOT23 programmable supervisory IC that monitors VCC for undervoltage conditions and asserts an active-low push/pull RESET output when VCC falls below 2.5V ±2.5% (–40°C to +85°C), with factory-programmed 1ms minimum reset timeout, manual-reset input (MR), and guaranteed RESET validity down to VCC = 1V. It targets multivoltage embedded systems requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6306EUK25D1+T datasheet, MAX6306EUK25D1+T pinout, MAX6306EUK25D1+T application, or MAX6306EUK25D1+T equivalent, this page delivers verified electrical parameters, thermal performance data, MR timing behavior, reset threshold stability over temperature, and real-world design guidance for portable, industrial, and controller applications.
Technical Context
The MAX6306EUK25D1+T 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 drift. Its push/pull RESET output sources/sinks current without external pull-up, enabling direct interface with microcontrollers requiring active-high or active-low reset assertion.
It integrates a manual-reset input (MR) with 63.5kΩ internal pull-up, 1.5µs minimum pulse width guarantee, and glitch rejection of 0.1µs. The device ignores fast transients on VCC-up to 1000µs at 2.5V overdrive-and maintains functional reset assertion even as VCC drops to 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.5V ±2.5% (–40°C to +85°C); ensures reliable detection of 2.5V supply brownout before system instability occurs. |
| Reset Timeout Period | 1ms minimum (D1); guarantees sufficient hold time for microcontroller initialization after power stabilization. |
| Supply Current | 8µA typical at +25°C; enables battery-powered operation for >10 years in low-duty-cycle monitoring applications. |
| RESET Output Type | Active-low push/pull; eliminates need for external pull-up resistor and supports direct drive of CMOS/TTL reset inputs. |
| MR Input Behavior | Internal 63.5kΩ pull-up; allows momentary switch-to-GND implementation with no external components or debounce circuitry. |
| Operating Temperature | –40°C to +85°C; qualified for industrial and automotive under-hood environments where ambient extremes occur. |
| VCC Range | 2.5625V to +5.5V (VTH + 2.5% min to max rating); defines safe operating window for 2.5V/3.3V/5V systems. |
Pinout & Package
MAX6306EUK25D1+T is housed in a lead-free 5-pin SOT23 package (outline U5+1), measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads optimized for automated PCB assembly and thermal reliability in space-constrained designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push/pull reset output | Asserts logic-low during reset; sinks ≥1.2mA at VCC > 2.5V; deasserts cleanly after timeout without external components. |
| 2 - GND | System ground reference | Return path for all internal comparators and output stage; must be connected directly to low-impedance ground plane. |
| 3 - RST IN | Adjustable undervoltage reset input | Monitors external voltage via resistor divider; triggers reset when input falls below 1.20–1.26V reference; supports secondary supply monitoring. |
| 4 - MR | Manual-reset input | Active-low; forces reset when pulled <0.3×VCC; internal pull-up enables NC or VCC tie-off; immune to <0.1µs noise spikes. |
| 5 - VCC | Main supply input | Power source and primary monitored rail; internal trimmed divider sets 2.5V reset threshold; valid operation starts at VCC ≥2.5625V. |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-set 2.5V threshold | ±2.5% tolerance over full industrial temperature range ensures consistent brownout detection across operating environments. |
| Push/pull RESET output | Eliminates external pull-up resistor, reduces BOM count, and guarantees valid logic levels down to VCC = 1V without signal degradation. |
| Transient-immune VCC monitoring | Rejects negative-going glitches up to 1000µs duration at 2.5V overdrive-critical for noisy DC-DC converter outputs. |
| Integrated manual-reset function | MR pin includes 63.5kΩ internal pull-up and 1.5µs minimum pulse width guarantee-enables simple switch-based reset with zero external parts. |
| No external components required | Full supervisory functionality-including reset generation, timeout, MR, and dual-supply monitoring-achieved with zero external passives. |
Applications
| Industrial PLC Controller | Portable Medical Monitor |
|---|---|
Use Scenario: A DIN-rail mounted programmable logic controller operates continuously in factory environments with fluctuating 24VDC input converted to regulated 5V/3.3V rails. IC Role / Device Role / Timing Role: MAX6306EUK25D1+T monitors the 3.3V logic rail and asserts RESET if voltage sags below 2.5V due to load transients or aging power supply. Use Value: Prevents firmware corruption during brownout by holding µC in reset until stable 3.3V is restored and 1ms timeout expires-ensuring deterministic boot sequence. |
Use Scenario: A handheld ECG device powered by two AA batteries (1.8–3.2V) uses a boost converter to generate 3.3V for its ARM Cortex-M0 MCU and analog front-end. IC Role / Device Role / Timing Role: MAX6306EUK25D1+T supervises the 3.3V rail and triggers reset when battery voltage drops near end-of-life, while MR supports clinician-initiated recalibration. Use Value: 8µA quiescent current extends battery life; 1ms timeout avoids unnecessary reboots during brief load spikes; push/pull output drives MCU reset pin directly. |
| Automotive Body Control Module | Smart Energy Meter |
Use Scenario: A BCM in a 12V vehicle system powers multiple subsystems including CAN transceivers, LED drivers, and sensors-all supplied from a 5V LDO. IC Role / Device Role / Timing Role: MAX6306EUK25D1+T monitors the 5V rail and initiates controlled shutdown/reset when ignition voltage dips during cranking (e.g., 7V → 5.5V → 4.8V). Use Value: Immunity to 1000µs transients prevents spurious resets during engine start; guaranteed operation down to –40°C ensures cold-weather reliability. |
Use Scenario: A Class 0.5 electricity meter uses isolated power supplies to feed metrology ASICs and communication modules, with strict uptime requirements. IC Role / Device Role / Timing Role: MAX6306EUK25D1+T guards the 3.3V digital supply feeding the microcontroller and RTC, asserting reset if AC line dropout causes LDO output collapse. Use Value: Factory-trimmed 2.5V threshold matches common LDO dropout margins; 1ms timeout aligns with firmware watchdog initialization windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G125DBVR | Fixed 2.5V threshold, 20ms default timeout (adjustable via capacitor), open-drain output requiring pull-up. | Lacks manual-reset input and adjustable RST IN; better suited for cost-sensitive, single-rail applications without secondary monitoring needs. | Select when board layout already includes pull-up resistor and MR functionality is handled externally. |
| ADM6315-25D3ARTZ-RL | 2.5V threshold, 1.1s timeout (fixed), open-drain output, no MR or RST IN pins, –40°C to +125°C rating. | Higher temp grade but no manual reset or auxiliary input; designed for extended-temperature automotive or industrial use without flexibility. | Choose only when ambient exceeds +85°C and auxiliary monitoring or user-initiated reset is unnecessary. |
Compared with TPS3808G125DBVR and ADM6315-25D3ARTZ-RL, the MAX6306EUK25D1+T uniquely combines factory-programmed 2.5V/1ms operation, push/pull output, integrated MR, and RST IN capability in a single 5-pin SOT23-reducing component count and enabling dual-supply supervision without design compromises.
Availability
MAX6306EUK25D1+T is available at Aetrix Electronics and suitable for industrial control systems, portable medical devices, automotive body electronics, and smart metering applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6306EUK25D1+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, automotive, communications, and computing markets.
The MAX6305–MAX6313 family was engineered to deliver precision, low-power, multi-input supervisory functions in ultra-small packages-targeting space- and power-constrained embedded systems needing robust, drop-in reset solutions.
FAQ
What is the exact reset threshold voltage for MAX6306EUK25D1+T and how does it vary with temperature?
The MAX6306EUK25D1+T has a factory-trimmed nominal reset threshold of 2.5V, with ±2.5% tolerance over the full –40°C to +85°C operating range. Its temperature coefficient is 40ppm/°C, meaning threshold drift is ≤±0.01V across the entire temperature span-verified in the Electrical Characteristics table under "Reset Threshold" and "Reset Threshold/V°C" parameters.
Does MAX6306EUK25D1+T require an external pull-up resistor on the RESET pin?
No. The MAX6306EUK25D1+T features an active-low push/pull RESET output capable of both sourcing and sinking current. It drives low actively (≤0.3V at 1.2mA sink) and high actively (≥0.8×VCC at 500µA source), eliminating the need for any external pull-up resistor-unlike open-drain alternatives such as the MAX6305 series.
How does the manual-reset (MR) input behave on MAX6306EUK25D1+T?
The MR input on MAX6306EUK25D1+T is active-low with an internal 63.5kΩ pull-up resistor. Pulling MR below 0.3×VCC (e.g., to GND via momentary switch) forces RESET assertion for the full 1ms timeout period after MR returns high. Its 1.5µs minimum pulse width and 0.1µs glitch rejection ensure noise immunity in electrically harsh environments.
Can MAX6306EUK25D1+T monitor voltages other than VCC?
Yes. In addition to monitoring VCC via its internal trimmed divider, the MAX6306EUK25D1+T includes an RST IN pin that accepts an external resistor divider to monitor a second supply rail (e.g., 12V, 24V, or analog sensor supply). When the divided voltage falls below 1.20–1.26V, it triggers reset independently of VCC status-enabling true multivoltage supervision.
What is the minimum VCC voltage at which MAX6306EUK25D1+T guarantees valid RESET output?
The MAX6306EUK25D1+T guarantees valid RESET output down to VCC = 1V. Below this level, push/pull drive strength degrades significantly. This specification is explicitly stated in the datasheet's "Guaranteed RESET Valid to VCC = 1V" feature and confirmed in the Electrical Characteristics table under "RESET Output Voltage" conditions.
MAX6306EUK25D1+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:
- 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+T FAQ
1.How can I place an order for MAX6306EUK25D1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6306EUK25D1+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 MAX6306EUK25D1+T reliable?
The price and inventory of MAX6306EUK25D1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6306EUK25D1+T is usually 5 days.
3.What payment methods are accepted for MAX6306EUK25D1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6306EUK25D1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6306EUK25D1+T?
MAX6306EUK25D1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6306EUK25D1+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 MAX6306EUK25D1+T?
For technical support, including MAX6306EUK25D1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6306EUK25D1+T requirements.
6.How does Aetrix verify that MAX6306EUK25D1+T is sourced from the original manufacturer or authorized distributors?
All MAX6306EUK25D1+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 MAX6306EUK25D1+T meets industry standards.
7.What is the process for return or replacement of MAX6306EUK25D1+T?
All MAX6306EUK25D1+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6306EUK25D1+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 MAX6306EUK25D1+T part is unused and in its original packaging.
Return procedure for MAX6306EUK25D1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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