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Analog Devices Inc./Maxim Integrated MAX6306UK30D2-T
- Part No.:
- MAX6306UK30D2-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6306UK30D2-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,614
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Product details
Overview
MAX6306UK30D2-T from Maxim Integrated is a 5-pin SOT23 programmable supervisory IC that monitors VCC supply voltage and asserts an active-low push/pull reset output when VCC falls below its factory-set 3.0V threshold (±2.5% over temperature). It features a 20ms minimum reset timeout, manual reset input (MR), and guaranteed RESET validity down to VCC = 1V. Used in portable computers and multivoltage embedded systems for reliable power-on and brownout reset generation.
For engineers reviewing the MAX6306UK30D2-T datasheet, MAX6306UK30D2-T pinout, MAX6306UK30D2-T application, or MAX6306UK30D2-T equivalent, key selection considerations include its 3.0V VCC reset threshold tolerance, 20ms timeout period, MR input compatibility with TTL/CMOS logic, immunity to fast VCC transients, and guaranteed operation across 0°C to +70°C.
Technical Context
The MAX6306UK30D2-T uses an internal factory-trimmed resistor divider to monitor VCC against a precision reference, enabling accurate 3.0V reset detection with ±2.5% tolerance over –40°C to +85°C. Its reset generator includes a programmable timeout circuit with four factory-configured delay options - D2 selects 20ms (min) - and guarantees valid reset assertion even as VCC drops to 1V.
This device integrates a manual-reset input (MR) with internal 63.5kΩ pull-up, supporting direct connection to momentary switches or logic drivers without external components. It ignores short-duration negative-going VCC transients up to ~10µs at 3.0V threshold overdrive, enhancing noise immunity in noisy power environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 3.0V nominal, ±2.5% over 0°C to +70°C - ensures reliable reset activation during 3.3V system brownouts |
| Reset Timeout Period | 20ms minimum - provides sufficient hold time for microprocessor initialization after power stabilization |
| Supply Current | 8µA typical at +25°C - enables ultra-low-power operation in battery-powered portable equipment |
| RESET Output Type | Active-low push/pull - drives CMOS/TTL loads directly without external pull-up; sinks 3.2mA at VCC > 4.25V |
| MR Input Logic | TTL-compatible low threshold (0.8V max), internal 63.5kΩ pull-up - allows switch-to-ground or open-drain control with no external biasing |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade embedded and computing applications |
| VCC Range | 3.075V to +5.5V - supports monitoring of 3.3V supplies while remaining functional up to 5.5V rail |
Pinout & Package
MAX6306UK30D2-T is housed in a 5-pin SOT23 package (outline U5+1, land pattern 90-0174), optimized for space-constrained PCB layouts in portable and multivoltage systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push/pull reset output | Asserts low during reset condition; sinks 3.2mA at VCC > 4.25V; valid down to VCC = 1V |
| 2 - GND | System ground reference | Return path for all internal comparators and output driver; must be low-impedance |
| 3 - RST IN | Adjustable undervoltage reset input | Monitors external supply via resistor divider; threshold referenced to 1.23V internal reference |
| 4 - MR | Manual reset input | Pull low to force reset; internal 63.5kΩ pull-up enables switch-to-ground interface |
| 5 - VCC | Main supply input and monitored rail | Power source and primary voltage under supervision; internal divider sets 3.0V reset point |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed 3.0V reset threshold | Eliminates external resistor network; ±2.5% accuracy over full temperature range ensures consistent brownout response |
| 20ms minimum reset timeout (D2) | Guarantees microprocessor reset hold time meets boot requirements for most 8-/16-bit MCUs |
| Manual reset input with internal pull-up | Enables hardware-initiated reset using only a momentary switch; no external components required |
| Immunity to fast VCC transients | Rejects negative-going glitches ≤10µs at 3.0V threshold overdrive - prevents spurious resets in noisy power domains |
| Valid RESET output down to VCC = 1V | Maintains defined logic state during deep brownout, ensuring deterministic µP behavior until complete power loss |
Applications
| Portable Computers | Embedded Control Systems |
|---|---|
Use Scenario: Power management in clamshell laptops where 3.3V and 5V rails coexist and require coordinated reset sequencing. IC Role / Device Role / Timing Role: Monitors 3.3V VCC rail and asserts RESET if voltage sags below 3.0V during battery transition or adapter switching. Use Value: Prevents firmware corruption by holding CPU in reset until stable 3.3V is re-established, leveraging 20ms timeout for safe core initialization. |
Use Scenario: Industrial PLC I/O modules powered from 3.3V isolated supplies subject to line transients. IC Role / Device Role / Timing Role: Acts as primary VCC supervisor on the 3.3V logic rail, with MR tied to front-panel reset button. Use Value: Guarantees clean restart after operator-initiated reset or brownout, using push/pull RESET to drive optocoupler inputs without external buffering. |
| Multivoltage Systems: 3V/5V | Intelligent Instruments |
Use Scenario: Medical handheld analyzer with dual 3.3V digital and 5V analog subsystems sharing common reset coordination. IC Role / Device Role / Timing Role: Supervises 3.3V domain while RST IN monitors 5V rail via external divider; MR enables service-mode reset. Use Value: Ensures synchronized reset across voltage domains - 3.0V VCC threshold triggers immediate action, while RST IN extends supervision coverage. |
Use Scenario: Battery-powered data logger sampling sensors at low duty cycle, requiring ultra-low quiescent current. IC Role / Device Role / Timing Role: Provides power-on reset and brownout protection with only 8µA supply current, extending battery life. Use Value: Delivers robust supervision without compromising standby runtime - critical for field-deployed instruments operating months between charges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6306UK30D3-T | 140ms minimum reset timeout (vs. 20ms); otherwise identical pinout, threshold, and features | Suitable for systems requiring longer reset hold time, e.g., FPGA configuration or complex bootloader sequences | Select when extended reset duration is needed; not drop-in for timing-critical MCU boot paths requiring <50ms release. |
| TPS3808G30DBVR | 3.0V threshold, 20ms timeout, but open-drain RESET output and higher 12µA ICC; operates down to –40°C | Better suited for mixed-voltage systems needing level translation or wider temperature range | Choose if open-drain flexibility or industrial temp grade is required; requires external pull-up and consumes more current. |
Compared with MAX6306UK30D3-T and TPS3808G30DBVR, the MAX6306UK30D2-T uniquely combines 20ms push/pull RESET, 8µA supply current, and commercial-temp reliability - making it optimal for cost-sensitive, space-constrained 3.3V portable designs where minimal external components and fast reset release are essential.
Availability
MAX6306UK30D2-T is available at Aetrix Electronics and suitable for portable computers, embedded control systems, and multivoltage 3V/5V applications requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for MAX6306UK30D2-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 precision analog and mixed-signal ICs for power management, sensing, and interface applications in demanding industrial, computing, and portable markets.
The MAX6305–MAX6313 family was developed specifically for multivoltage microprocessor supervision, delivering factory-programmable thresholds, multiple timeout options, and transient-immune monitoring in ultra-small SOT23 packages.
FAQ
What is the exact factory-set reset threshold voltage for MAX6306UK30D2-T?
The MAX6306UK30D2-T has a nominal VCC reset threshold of 3.0V, with ±2.5% tolerance over the 0°C to +70°C operating temperature range. This value is set by an internal factory-trimmed resistor divider and does not require external calibration. The "30" in the part number explicitly denotes the 3.0V threshold per Maxim's ordering convention.
Does MAX6306UK30D2-T support manual reset functionality, and how is it implemented?
Yes, MAX6306UK30D2-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 20ms timeout period after MR returns high. An internal 63.5kΩ pull-up resistor allows direct connection to a momentary switch tied to ground - no external components are needed for basic manual reset operation.
What type of RESET output does MAX6306UK30D2-T provide, and what are its drive capabilities?
MAX6306UK30D2-T features an active-low push/pull RESET output on pin 1. It can both sink and source current, eliminating the need for an external pull-up resistor. At VCC > 4.25V, it sinks up to 3.2mA while maintaining VOL ≤ 0.4V; at VCC > 2.5V, it sinks 1.2mA with VOL ≤ 0.3V - enabling direct interfacing with standard CMOS and TTL inputs.
Can MAX6306UK30D2-T monitor voltages other than VCC, and how is that configured?
Yes, MAX6306UK30D2-T includes an adjustable RST IN input (pin 3) that monitors external supplies via an external resistor divider. The internal reference is 1.23V, so connecting R1 and R2 such that VRST IN falls below 1.23V when the target supply drops below its desired threshold enables precise undervoltage detection independent of VCC - useful for supervising 5V, 12V, or analog rails.
Is MAX6306UK30D2-T compatible with systems where VCC may drop below 1.0V during shutdown?
MAX6306UK30D2-T guarantees valid RESET output down to VCC = 1.0V, meaning the push/pull driver maintains specified VOL and VOH levels throughout that range. Below 1.0V, output behavior is not guaranteed; for applications requiring defined logic states down to 0V, an external 100kΩ pull-down resistor on RESET is recommended to ensure low-level assertion during deep brownout.
MAX6306UK30D2-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:
- 3V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6306UK30D2-T FAQ
1.How can I place an order for MAX6306UK30D2-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6306UK30D2-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 MAX6306UK30D2-T reliable?
The price and inventory of MAX6306UK30D2-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6306UK30D2-T is usually 5 days.
3.What payment methods are accepted for MAX6306UK30D2-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6306UK30D2-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6306UK30D2-T?
MAX6306UK30D2-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6306UK30D2-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 MAX6306UK30D2-T?
For technical support, including MAX6306UK30D2-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6306UK30D2-T requirements.
6.How does Aetrix verify that MAX6306UK30D2-T is sourced from the original manufacturer or authorized distributors?
All MAX6306UK30D2-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 MAX6306UK30D2-T meets industry standards.
7.What is the process for return or replacement of MAX6306UK30D2-T?
All MAX6306UK30D2-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6306UK30D2-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 MAX6306UK30D2-T part is unused and in its original packaging.
Return procedure for MAX6306UK30D2-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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