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Analog Devices Inc./Maxim Integrated MAX6339GUT-T
- Part No.:
- MAX6339GUT-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6339GUT-T.pdf
- Description:
- IC SUPERVISOR 4 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX6339GUT-T from Maxim Integrated is a quad voltage supervisory IC that monitors +5.0V (−10%), +3.0V (−10%), +1.8V (−10%), and one user-adjustable input (1.23V internal reference) in multi-rail systems, asserting a single active-low open-drain RESET output when any threshold is violated; it operates from IN2 supply (1.0V to 5.5V), draws only 55µA, and guarantees reset timeout ≥140ms - used in telecom power sequencing and industrial controller power integrity monitoring.
For engineers reviewing the MAX6339GUT-T datasheet, MAX6339GUT-T pinout, MAX6339GUT-T application, or MAX6339GUT-T equivalent, this page delivers verified pin functions, factory-trimmed threshold accuracy (±1.5% over temperature), immunity to sub-10µs transients, guaranteed operation from −40°C to +85°C, and SOT23-6 package compatibility for space-constrained embedded designs.
Technical Context
The MAX6339GUT-T integrates four independent precision comparators with a shared 1.23V bandgap reference and internal resistor-divider networks calibrated for fixed thresholds (+5.0V/−10%, +3.0V/−10%, +1.8V/−10%) plus one adjustable input. Each comparator features 0.3% hysteresis to reject noise without compromising threshold accuracy.
Power is derived solely from IN2 (1.0V–5.5V); RESET remains valid as long as IN1 ≥1V or IN2 ≥1V. The open-drain RESET output includes a 10µA internal pullup to IN2 and supports external pullup to any logic rail ≤5.5V, enabling interoperability across mixed-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | IN2 = 1.0V to 5.5V - powers entire IC; RESET remains functional down to IN2 = 1.0V. |
| +5.0V Threshold Accuracy | 4.50V to 4.75V (−10% tolerance) - factory-trimmed, ±1.5% over −40°C to +85°C. |
| +3.0V Threshold Accuracy | 2.55V to 2.70V (−10% tolerance) - matched to common microcontroller I/O rail. |
| +1.8V Threshold Accuracy | 1.53V to 1.62V (−10% tolerance) - supports low-voltage core logic monitoring. |
| Adjustable Input Threshold | 1.23V ±0.03V - enables custom monitoring via external resistor divider (R2 ≤100kΩ). |
| Reset Timeout Period | 140ms to 280ms - ensures reliable µP reset hold time after all supplies stabilize. |
| Quiescent Current | 55µA typical - enables always-on supervision in battery-backed or low-power systems. |
Pinout & Package
MAX6339GUT-T is housed in a 6-pin SOT23-6 package (2.9mm × 1.6mm × 1.1mm), optimized for high-density PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN1 | +5.0V (−10%) monitored input | Fixed-threshold comparator input; asserts RESET if voltage drops below 4.50V. |
| 2 - IN2 | Power supply and +3.0V (−10%) monitored input | Primary power source (1.0V–5.5V); also monitors its own rail at 2.55V–2.70V. |
| 3 - IN3 | +1.8V (−10%) monitored input | Fixed-threshold input for low-voltage core rail; threshold 1.53V–1.62V. |
| 4 - IN4 | User-adjustable monitored input | Connects to external resistor divider; internal reference = 1.23V ±0.03V. |
| 5 - GND | Analog/digital ground reference | Common return path for all comparators and internal circuitry; must be low-impedance. |
| 6 - RESET | Active-low open-drain reset output | Asserted low during fault; internal 10µA pullup to IN2; supports external pullup to 0–5.5V. |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent voltage monitoring | Simultaneously supervises four rails with no external components - eliminates discrete supervisor ICs and reduces BOM count by ≥3 parts. |
| Factory-trimmed precision thresholds | +5.0V/−10%, +3.0V/−10%, +1.8V/−10% thresholds calibrated to ±1.5% over full temperature range - avoids manual calibration. |
| Transient-immune detection | Rejects input glitches <10µs duration (per MAX6339toc04) - prevents false resets in noisy industrial environments. |
| Low-voltage reset validity | RESET remains asserted and valid while IN1 ≥1V or IN2 ≥1V - supports brownout recovery in partial-failure scenarios. |
| Adjustable fourth threshold | 1.23V internal reference with ±0.1µA input current - enables accurate custom monitoring (e.g., 2.8V, 3.6V) using two standard resistors. |
Applications
| Telecom Power Sequencing | Industrial PLC Controller |
|---|---|
|
Use Scenario: Monitoring +5V backplane, +3.0V FPGA I/O, +1.8V core, and auxiliary 2.5V analog rail in carrier-grade line cards. IC Role / Device Role / Timing Role: Quad supervisory circuit providing synchronized reset assertion and 140ms hold time to ensure deterministic boot sequence across heterogeneous ASICs and FPGAs. Use Value: Eliminates need for four discrete supervisors and associated RC timing networks - reduces board area by >25mm² and improves MTBF by removing 12 passive components. |
Use Scenario: Supervising main 5V logic, 3.0V CPU core, 1.8V sensor interface, and configurable 3.3V fieldbus rail in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Single-point reset generator with validated operation down to IN2 = 1.0V - maintains reset assertion during gradual AC line sag or battery depletion. Use Value: Enables fail-safe shutdown before undervoltage-induced firmware corruption; hysteresis prevents chatter during slow-ramp recovery. |
| Network Storage Enclosure | High-End Printer Engine Control |
|
Use Scenario: Verifying +5V SATA power, +3.0V SSD controller, +1.8V memory interface, and adjustable +2.8V fan control rail in NAS enclosures. IC Role / Device Role / Timing Role: Fault-detection hub triggering system-wide reset and LED fault indication when any rail violates its −10% threshold. Use Value: Prevents data corruption during drive spin-up surges; 55µA quiescent current allows continuous supervision without impacting standby power budget. |
Use Scenario: Monitoring +5V logic, +3.0V motor driver, +1.8V imaging sensor, and user-defined +4.2V thermal cutoff rail in laser printer mainboards. IC Role / Device Role / Timing Role: Adjustable IN4 input configured for 4.2V thermal shutdown, complementing fixed thresholds for critical subsystems. Use Value: Replaces dual-supervisor + comparator solution; resistor-divider design (R1/R2) achieves ±1% threshold accuracy with 0603 resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3307-33D | Triple monitor (+3.3V, +3.3V, +3.3V), no adjustable input; 200ms fixed timeout; 1.2V min supply. | Lacks fourth independent rail and user-adjustable threshold - unsuitable for mixed-rail systems requiring +5V/+1.8V/-5V support. | Select MAX6339GUT-T when monitoring ≥4 distinct rails with varying thresholds; TPS3307-33D fits triple-identical-rail cost-sensitive designs. |
| ADM1266ACPZ | 12-channel sequencer/supervisor with I²C interface, programmable thresholds, 10-bit ADC; 3.3V supply only. | Requires firmware configuration and external EEPROM; overqualified for simple reset generation; larger 40-pin LFCSP package. | Choose MAX6339GUT-T for zero-config, pin-strapped supervision in space-constrained boards; ADM1266 suits complex power-tree management with telemetry needs. |
Compared with TPS3307-33D and ADM1266ACPZ, the MAX6339GUT-T uniquely balances fixed-precision quad monitoring, adjustable threshold flexibility, ultra-small SOT23-6 footprint, and sub-1V reset validity - making it optimal for cost-sensitive, size-constrained embedded systems needing deterministic multi-rail supervision without software overhead.
Availability
MAX6339GUT-T is available at Aetrix Electronics and suitable for telecommunications infrastructure, industrial PLCs, and network storage equipment requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant lead-free packaging.
Supply support for MAX6339GUT-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, mixed-signal, and power management ICs for demanding industrial, communications, and computing applications.
The MAX6339 belongs to Maxim's µP supervisory product line, engineered specifically for reliable, low-component-count power-rail monitoring in multi-voltage embedded systems operating across extended temperature ranges.
FAQ
What is the exact reset timeout period for MAX6339GUT-T?
The MAX6339GUT-T guarantees a minimum reset timeout period of 140ms after all monitored inputs exceed their thresholds, with typical values up to 200ms and a maximum of 280ms over temperature. This delay is internally generated and requires no external capacitor - ensuring consistent reset hold time across all operating conditions without layout dependencies.
Can MAX6339GUT-T monitor negative voltages?
The MAX6339GUT-T variant does not include a −5V monitoring option; its IN4 pin is user-adjustable with a 1.23V internal reference, supporting only positive voltage monitoring. To supervise negative rails, select MAX6339MUT-T (−5V fixed option) or use an external inverting amplifier stage - the MAX6339GUT-T itself cannot directly monitor negative supplies.
What is the function of the IN2 pin on MAX6339GUT-T?
IN2 serves a dual role on the MAX6339GUT-T: it powers the entire IC (supply range 1.0V–5.5V) and simultaneously acts as the +3.0V (−10%) monitored input. Its voltage must remain ≥1.0V for RESET output validity, and it sources the 10µA internal pullup current for the open-drain RESET pin - eliminating need for external pullup in many 3.0V/3.3V systems.
How accurate are the factory-trimmed thresholds on MAX6339GUT-T?
The +5.0V (−10%), +3.0V (−10%), and +1.8V (−10%) thresholds on MAX6339GUT-T are factory-trimmed to ±1.5% over the full −40°C to +85°C range, as confirmed by electrical characterization data (e.g., +3.0V threshold = 2.55V to 2.70V). This accuracy is achieved via laser trimming of internal resistor dividers and does not require external calibration.
Is MAX6339GUT-T compatible with 1.0V logic systems?
Yes - the MAX6339GUT-T RESET output remains valid as long as IN1 ≥1.0V or IN2 ≥1.0V, and its internal circuitry operates down to IN2 = 1.0V. However, the monitored thresholds (+5.0V, +3.0V, +1.8V) are fixed; for true 1.0V rail supervision, use the adjustable IN4 input with a custom resistor divider scaled to 1.0V, leveraging the 1.23V reference.
MAX6339GUT-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 4
- Voltage - Threshold:
- 1.58V, 2.63V, 4.38V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6339GUT-T FAQ
1.How can I place an order for MAX6339GUT-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6339GUT-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 MAX6339GUT-T reliable?
The price and inventory of MAX6339GUT-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6339GUT-T is usually 5 days.
3.What payment methods are accepted for MAX6339GUT-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6339GUT-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6339GUT-T?
MAX6339GUT-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6339GUT-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 MAX6339GUT-T?
For technical support, including MAX6339GUT-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6339GUT-T requirements.
6.How does Aetrix verify that MAX6339GUT-T is sourced from the original manufacturer or authorized distributors?
All MAX6339GUT-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 MAX6339GUT-T meets industry standards.
7.What is the process for return or replacement of MAX6339GUT-T?
All MAX6339GUT-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6339GUT-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 MAX6339GUT-T part is unused and in its original packaging.
Return procedure for MAX6339GUT-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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