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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:4,775
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Product details
Overview
MAX6306UK30D1-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 signal when VCC falls below its factory-set 3.0V threshold (±2.5% over temperature), with a 1ms minimum reset timeout period. It features manual-reset input, immunity to fast VCC transients, guaranteed RESET validity down to VCC = 1V, and draws only 8µA supply current - ideal for portable/battery-powered microprocessor 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 VCC reset threshold tolerance, 1ms factory-programmed timeout, manual-reset capability, SOT23-5 package compatibility, and operation across 0°C to +70°C industrial temperature range.
Technical Context
The MAX6306UK30D1-T uses an internal factory-trimmed resistor divider to monitor VCC against a precision reference, enabling fixed-threshold detection without external components. Its reset generator includes a monostable timer that holds RESET asserted for ≥1ms after all monitored supplies return above threshold.
This device integrates a manual-reset input (MR) with internal 63.5kΩ pull-up, supporting TTL/CMOS logic drive and providing noise immunity via optional 0.1µF MR-to-GND capacitor. RESET output is push/pull (active-low), sourcing/sinking current without external pull-up, and remains valid down to VCC = 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 3.0V nominal, ±2.5% over -40°C to +85°C - ensures reliable reset assertion during 3.3V system brownout |
| Reset Timeout Period | 1ms minimum - guarantees sufficient processor initialization time after power stabilization |
| Supply Current | 8µA typical at +25°C - enables multi-year battery life in portable equipment |
| Operating Temperature | 0°C to +70°C - suitable for commercial and industrial embedded control environments |
| RESET Output Type | Active-low push/pull - eliminates need for external pull-up resistor and supports bidirectional µP reset pins |
| MR Input Logic | TTL/CMOS-compatible with 63.5kΩ internal pull-up - simplifies manual reset switch interface without external biasing |
| VCC Validity Range | Guaranteed RESET assertion down to VCC = 1V - maintains reset integrity during deep brownout conditions |
Pinout & Package
MAX6306UK30D1-T is housed in a 5-pin SOT23 surface-mount 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 | Drives µP reset pin directly; sinks 3.2mA at VCC > 4.25V, sources 800µA - no external pull-up required |
| 2 - GND | System ground reference | Return path for all internal comparators and output stage; must be low-impedance for noise immunity |
| 3 - RST IN | Adjustable undervoltage reset input | Monitors secondary supply via external resistor divider; asserts reset if input falls below 1.23V reference |
| 4 - MR | Manual-reset input | Pull low to force reset; internal 63.5kΩ pull-up allows direct switch-to-GND connection without external components |
| 5 - VCC | Main supply input and monitored rail | Power source and primary reset trigger; internal trimmed divider sets 3.0V threshold; operates from 1.0V to 5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set 3.0V reset threshold | Eliminates external resistor network and calibration effort for 3.3V system monitoring |
| 1ms minimum reset timeout | Ensures µP completes power-up sequence before release, preventing premature code execution |
| Immunity to short VCC transients | Rejects <1µs glitches up to 100mV below threshold - avoids spurious resets in noisy power environments |
| No external components required | Reduces BOM count and board area; simplifies design validation and production test |
| Manual-reset input with internal pull-up | Enables field-service reset using momentary switch; removes need for external bias resistors or logic buffers |
Applications
| Portable Computers | Intelligent Instruments |
|---|---|
Use Scenario: Battery-powered laptop with dual 5V/3.3V rails experiencing intermittent brownout during AC adapter switching. IC Role / Device Role / Timing Role: Primary VCC supervisor asserting active-low RESET on 3.3V rail; provides 1ms hold time to stabilize CPU core voltage before boot. Use Value: Prevents firmware corruption by ensuring full power stabilization before processor release, leveraging factory-set 3.0V threshold matched to 3.3V LDO tolerance. |
Use Scenario: Handheld multimeter with microcontroller, LCD, and analog front-end powered from single Li-ion cell with DC-DC converter. IC Role / Device Role / Timing Role: Monitors regulated 3.3V supply and provides manual reset via front-panel button; RESET output interfaces directly with µP's bidirectional reset I/O. Use Value: Enables user-initiated recalibration without power cycle; push/pull output eliminates pull-up resistor, saving board space and leakage current. |
| Embedded Control Systems | Multivoltage Systems: 3V/5V |
Use Scenario: Industrial PLC module with isolated 5V logic and 24V I/O, where 3.3V FPGA core supply must remain stable during field wiring transients. IC Role / Device Role / Timing Role: Supervises 3.3V FPGA supply and secondary 5V logic rail via RST IN pin; asserts RESET within 500ns of undervoltage detection. Use Value: Guarantees FPGA configuration integrity during ESD events on I/O lines, using internal transient immunity and sub-microsecond propagation delay. |
Use Scenario: Set-top box with mixed 3.3V SoC and 5V peripheral bus, requiring coordinated reset sequencing during cold start. IC Role / Device Role / Timing Role: Primary supervisor for 3.3V domain; RST IN pin monitors 5V rail via resistor divider to trigger unified reset across both voltage domains. Use Value: Ensures synchronous release of SoC and peripherals, avoiding bus contention or latch-up caused by staggered power-up timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6306UK30D2-T | Same 3.0V threshold but 20ms minimum reset timeout instead of 1ms | Suitable for systems requiring longer initialization windows (e.g., flash memory programming) | Select when extended reset hold time improves system reliability beyond 1ms baseline |
| TPS3808G30DBVR | 3.0V threshold with 200ms default timeout; higher 12µA quiescent current; different pinout (SOT23-6) | Requires PCB redesign; better suited for automotive-grade designs needing AEC-Q100 qualification | Choose only if longer timeout or automotive qualification outweighs SOT23-5 footprint compatibility |
Compared with MAX6306UK30D2-T and TPS3808G30DBVR, the MAX6306UK30D1-T delivers the shortest factory-programmed reset timeout (1ms) in a pin-compatible SOT23-5 package, making it optimal for space-constrained, low-power portable systems where rapid but deterministic reset release is critical.
Availability
MAX6306UK30D1-T is available at Aetrix Electronics and suitable for portable computers, intelligent instruments, and embedded control systems requiring stable component supply with guaranteed lead-time and volume pricing support.
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) 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 portable and embedded systems, emphasizing ultra-low quiescent current, factory-programmed accuracy, and transient-immune reset generation.
FAQ
What is the factory-set reset threshold voltage for MAX6306UK30D1-T?
The MAX6306UK30D1-T has a factory-set VCC reset threshold of 3.0V nominal, with ±2.5% tolerance over the full operating temperature range of 0°C to +70°C. This value is laser-trimmed during production and does not require external calibration. The "30" in the part number explicitly denotes the 3.0V threshold, per Maxim's ordering convention defined in Table 1 of the datasheet.
Does MAX6306UK30D1-T require external components to function as a basic VCC supervisor?
No, the MAX6306UK30D1-T requires no external components for core VCC supervision functionality. Its factory-programmed 3.0V threshold, 1ms reset timeout, and push/pull RESET output eliminate the need for external resistors, capacitors, or pull-up networks. Only optional components - such as a 0.1µF capacitor on MR for noise immunity or an external resistor divider on RST IN for secondary supply monitoring - are used for enhanced features.
Can MAX6306UK30D1-T monitor a second voltage rail besides VCC?
Yes, the MAX6306UK30D1-T includes an adjustable undervoltage reset input (RST IN, Pin 3) that can monitor a secondary supply rail. By connecting an external resistor divider between the target rail and GND, with the junction fed to RST IN, the device asserts RESET when that rail falls below a threshold derived from the internal 1.23V reference. This enables coordinated reset across dual-rail systems like 3.3V/5V or 3.3V/12V platforms.
What is the maximum VCC voltage the MAX6306UK30D1-T can operate with?
The MAX6306UK30D1-T operates with VCC from 1.0V up to 5.5V. However, for reliable reset monitoring of the 3.0V threshold, VCC must exceed (VTH + 2.5%) = 3.075V per datasheet Electrical Characteristics conditions. Therefore, while the absolute maximum rating is 5.5V, functional VCC supervision is specified for VCC ≥ 3.075V and ≤ 5.5V.
Is MAX6306UK30D1-T compatible with lead-free soldering processes?
Yes, MAX6306UK30D1-T is available in lead-free packaging. The "-T" suffix indicates tape-and-reel packaging with lead-free finish compliant with RoHS Directive 2011/65/EU. For reflow soldering, the peak temperature must not exceed +260°C for lead-free packages, as specified in the Absolute Maximum Ratings table. Standard leaded versions use the same "-T" suffix but require lower peak temperatures (+240°C).
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:
- Obsolete
- 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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