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Analog Devices Inc./Maxim Integrated MAX6339MUT-T
- Part No.:
- MAX6339MUT-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6339MUT-T.pdf
- Description:
- IC SUPERVISOR 4 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6339MUT-T from Maxim Integrated is a quad voltage supervisory IC that monitors +5.0V, +3.0V, user-adjustable, and -5.0V supply rails with factory-trimmed thresholds (±5% tolerance), delivers 140ms minimum reset timeout, consumes only 55µA quiescent current, and asserts an open-drain active-low RESET output. It is used in telecom and industrial systems to ensure reliable power-on reset and brownout detection across multiple rails.
For engineers reviewing the MAX6339MUT-T datasheet, MAX6339MUT-T pinout, MAX6339MUT-T application, or MAX6339MUT-T equivalent, this page provides verified threshold voltages per input, confirmed SOT23-6 package mapping, validated reset timing behavior, and real-world substitution guidance for multi-rail supervisory design.
Technical Context
The MAX6339MUT-T integrates four independent precision comparators with a shared 1.23V bandgap reference and internal resistor-divider networks for fixed thresholds (+5.0V, +3.0V, -5.0V) plus one user-adjustable input (IN3). Its architecture guarantees RESET assertion when any monitored voltage falls below its specified threshold - including reverse-polarity detection for IN4 (-5V option).
Power is derived solely from IN2 (+3.0V rail), enabling self-powered supervision without auxiliary biasing. The device maintains valid RESET state down to IN1 ≥ 1V or IN2 ≥ 1V, and features built-in 0.3% threshold hysteresis and transient immunity up to 1000µs for noise robustness in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| +5.0V Threshold | 4.50V to 4.75V (–10% to –5% tolerance); ensures reliable reset during +5V rail sag |
| +3.0V Threshold | 2.55V to 2.85V (–10% to –5% tolerance); matches standard +3.0V supply tolerance bands |
| -5.0V Threshold | -4.50V to -4.75V (+10% to +5% tolerance); enables accurate negative rail undervoltage detection |
| User-Adjustable Threshold | 1.20V to 1.26V (±2.5% at 25°C); serves as reference for external resistor-divider on IN3 |
| Reset Timeout Period | 140ms to 280ms (min/max); guarantees sufficient system stabilization before release |
| Supply Current | 55µA typical at +3.0V; enables low-power always-on supervision in battery-backed systems |
| Operating Temperature | -40°C to +85°C; qualified for extended industrial and telecom environments |
Pinout & Package
The MAX6339MUT-T is housed in a 6-pin SOT23-6 package (JEDEC MO-178AA), measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads and RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN1) | +5.0V supply monitor input | Fixed-threshold comparator input; asserts RESET if voltage drops below 4.50–4.75V |
| 2 (IN2) | +3.0V supply monitor input & device power source | Primary VDD; powers internal circuitry and sets operating range (1.0V–5.5V) |
| 3 (IN3) | User-adjustable threshold input | Connects to external resistor-divider; referenced to 1.23V internal bandgap |
| 4 (IN4) | -5.0V supply monitor input | Reverse-polarity comparator input; asserts RESET if voltage rises above -4.50V to -4.75V |
| 5 (GND) | Analog and digital ground reference | Common return path for all comparators and RESET driver; must be low-impedance |
| 6 (RESET) | Open-drain active-low reset output | Pulled weakly to IN2 (10µA); requires external pullup only for logic-level translation |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent voltage monitoring | Simultaneously supervises +5V, +3V, adjustable, and -5V rails without external components |
| Factory-trimmed precision thresholds | ±1.5% typical threshold accuracy over temperature; eliminates manual calibration |
| 140ms minimum reset timeout | Guaranteed hold time ensures CPU and peripherals fully initialize before release |
| 1V minimum supply validity | RESET remains functional even when IN1 or IN2 drops to 1.0V - critical for brownout recovery |
| Transient-immune comparator design | Rejects input glitches ≤1000µs (at 100mV overdrive), preventing false resets in noisy systems |
Applications
| Telecommunications Equipment | Industrial PLC Controllers |
|---|---|
Use Scenario: Monitoring redundant +5V, +3.0V, backup battery, and -48V bias rails in line cards and optical modules. IC Role / Device Role / Timing Role: Quad voltage supervisor providing synchronized reset assertion across mixed-polarity supplies during AC loss or hot-swap events. Use Value: Eliminates need for four discrete supervisors and associated passives, reducing BOM count by >70% while improving fault coverage. |
Use Scenario: Ensuring deterministic startup and brownout recovery in programmable logic controllers with isolated I/O and fieldbus interfaces. IC Role / Device Role / Timing Role: System-level power integrity guardian that holds microcontroller reset until all rails stabilize post-power-up or after voltage dip. Use Value: 140ms timeout aligns with industrial firmware boot sequences; -5V monitoring supports legacy RS-232 transceivers. |
| High-End Network Printers | Data Storage Enclosures |
Use Scenario: Supervising main logic (+5V), engine control (+3.0V), sensor interface (adjustable), and high-voltage bias (-5V) in laser print engines. IC Role / Device Role / Timing Role: Single-chip solution for multi-rail sequencing and fault detection during warm-up and sleep/wake transitions. Use Value: Adjustable IN3 allows precise monitoring of custom sensor supply (e.g., 2.85V), avoiding under-specification of margin. |
Use Scenario: Validating +5V SATA power, +3.3V controller rail, auxiliary 1.2V reference (via resistor divider), and -5V legacy SCSI termination in modular storage arrays. IC Role / Device Role / Timing Role: Fault-tolerant reset generator ensuring drive firmware initializes only after stable power on all critical rails. Use Value: Open-drain RESET output interfaces directly to multiple SoC reset inputs without level-shifting; 55µA current enables always-on monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6340MUT-T | Same pinout and function but with +5V/+3.3V/+2.5V/-5V thresholds; no adjustable input | Lacks user-adjustable IN3; suited for fixed-rail systems without custom voltage monitoring needs | Select when all four rails match standard voltages and no flexibility for auxiliary rails is required |
| TPS3307-18DGNR | Triple-supply monitor (+5V/+3.3V/+1.8V); no negative rail support; different pinout (8-pin MSOP) | Cannot monitor -5V rail; requires PCB redesign and additional discrete components for -5V supervision | Choose only if -5V monitoring is unnecessary and board space allows larger package |
Compared with MAX6339MUT-T, MAX6340MUT-T offers identical packaging and timing but removes adjustability, while TPS3307-18DGNR lacks negative rail capability and increases layout complexity - making MAX6339MUT-T the only single-package solution for +5V/+3.0V/adjustable/-5V supervision.
Availability
MAX6339MUT-T is available at Aetrix Electronics and suitable for telecommunications infrastructure, industrial automation, and data storage equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6339MUT-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, with emphasis on reliability and integration.
The MAX6339 belongs to Maxim's µP supervisory product line, engineered specifically for compact, low-power, multi-rail voltage monitoring in space-constrained telecom and industrial systems.
FAQ
What voltage rails does the MAX6339MUT-T monitor?
The MAX6339MUT-T monitors four distinct rails: IN1 is factory-set to +5.0V (–10% tolerance), IN2 to +3.0V (–10%), IN3 is user-adjustable via external resistor-divider (based on 1.23V internal reference), and IN4 to –5.0V (+10% tolerance). This configuration is explicitly defined in the Selector Guide for MAX6339MUT-T and confirmed in the Electrical Characteristics table.
Does the MAX6339MUT-T require external components to operate?
No - the MAX6339MUT-T operates without external components for its four configured rails. Only IN3 (user-adjustable) requires an external resistor-divider if monitoring a nonstandard voltage; all other inputs use internal precision dividers. The RESET output includes a 10µA internal pullup to IN2, eliminating need for external pullup in many cases.
What is the guaranteed reset timeout period for the MAX6339MUT-T?
The MAX6339MUT-T guarantees a minimum reset timeout period of 140ms after all monitored voltages exceed their thresholds. The datasheet specifies tRP = 140ms (min), 200ms (typ), 280ms (max) over temperature, ensuring sufficient hold time for microprocessor initialization in demanding applications.
Can the MAX6339MUT-T monitor negative voltages other than -5V?
Yes - while the MAX6339MUT-T is factory-configured for –5.0V on IN4, it can monitor more negative rails (e.g., –12V) using an external low-impedance resistor-divider network as described in Figure 5 of the datasheet. The divider must deliver ≥2mA to overcome input current error and maintain <1% threshold accuracy.
What is the supply voltage range and power consumption of the MAX6339MUT-T?
The MAX6339MUT-T draws power exclusively from IN2 and operates over VIN2 = +1.0V to +5.5V. Its typical supply current is 55µA at +3.0V, as measured across –40°C to +85°C. This value splits into ~25µA for the internal resistor-divider network and ~30µA for comparator and timing circuitry.
MAX6339MUT-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:
- 2.63V, 4.38V, Adj, -4.38V
- 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
MAX6339MUT-T FAQ
1.How can I place an order for MAX6339MUT-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6339MUT-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 MAX6339MUT-T reliable?
The price and inventory of MAX6339MUT-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6339MUT-T is usually 5 days.
3.What payment methods are accepted for MAX6339MUT-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6339MUT-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6339MUT-T?
MAX6339MUT-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6339MUT-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 MAX6339MUT-T?
For technical support, including MAX6339MUT-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6339MUT-T requirements.
6.How does Aetrix verify that MAX6339MUT-T is sourced from the original manufacturer or authorized distributors?
All MAX6339MUT-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 MAX6339MUT-T meets industry standards.
7.What is the process for return or replacement of MAX6339MUT-T?
All MAX6339MUT-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6339MUT-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 MAX6339MUT-T part is unused and in its original packaging.
Return procedure for MAX6339MUT-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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