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Analog Devices Inc./Maxim Integrated MAX6339PUT-T
- Part No.:
- MAX6339PUT-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6339PUT-T.pdf
- Description:
- IC SUPERVISOR 4 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6339PUT-T from Maxim Integrated is a quad voltage supervisory IC that monitors +5.0V, +3.3V, adjustable, and -5.0V supplies with ±5% tolerance, delivers active-low open-drain RESET output, features 140ms minimum reset timeout, consumes only 55µA supply current, and operates from -40°C to +85°C - used in telecom power sequencing and industrial multi-rail systems.
For engineers reviewing the MAX6339PUT-T datasheet, MAX6339PUT-T pinout, MAX6339PUT-T application, or MAX6339PUT-T equivalent, this page provides verified threshold voltages, IN2-powered operation details, reset timing behavior under partial supply failure, and validated alternatives for multi-supply monitoring in embedded control and networking equipment.
Technical Context
The MAX6339PUT-T uses an internal bandgap reference (1.23V) and four precision comparators with 0.3% hysteresis per channel to detect undervoltage on IN1 (+5.0V), IN2 (+3.3V, also device power supply), IN3 (user-adjustable via external resistor divider), and IN4 (-5.0V). All thresholds are factory-trimmed except IN3, which accepts external scaling.
RESET assertion is synchronized across all inputs: any input falling below its threshold forces RESET low; recovery requires all inputs to exceed thresholds plus 140ms timeout. The open-drain output includes a 10µA internal pullup to IN2 and remains valid as long as IN1 ≥ 1V or IN2 ≥ 1V - enabling brownout detection during partial supply collapse.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| +5.0V Threshold | 4.25V to 4.50V (−10% tolerance, matches standard 5V rail margin) |
| +3.3V Threshold | 2.85V to 3.00V (−10% tolerance, supports 3.3V logic supply monitoring) |
| -5.0V Threshold | -4.50V to -4.25V (+10% tolerance, enables negative rail supervision) |
| Adjustable Threshold | 1.20V to 1.26V (internal reference; external divider sets actual monitored voltage) |
| Reset Timeout | 140ms minimum (ensures µP reset completion before release) |
| Supply Current | 55µA typical (low quiescent draw enables always-on supervision) |
| Operating Temp | -40°C to +85°C (guaranteed performance across industrial range) |
Pinout & Package
MAX6339PUT-T is housed in a 6-pin SOT23-6 package (2.9mm × 1.6mm × 1.1mm), surface-mount, RoHS-compliant, tape-and-reel format. Pin 1–4 are voltage monitor inputs; Pin 5 is ground; Pin 6 is open-drain RESET output referenced to IN2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN1) | +5.0V supply monitor input | Fixed −10% threshold (4.25V–4.50V); no external components required |
| 2 (IN2) | +3.3V supply monitor input & device power source | Supplies internal circuitry; RESET pullup tied to this pin; valid down to 1V |
| 3 (IN3) | User-adjustable voltage monitor input | Accepts external resistor divider; internal 1.23V reference enables custom thresholds (e.g., 1.5V, 2.8V) |
| 4 (IN4) | -5.0V supply monitor input | +10% tolerance threshold (−4.50V to −4.25V); polarity-inverted comparator logic |
| 5 (GND) | Analog/digital ground reference | Common return for all comparators and RESET driver; must be low-impedance |
| 6 (RESET) | Active-low open-drain reset output | Asserted when any input fails; 10µA internal pullup to IN2; compatible with 0–5.5V logic interfaces |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent voltage monitoring | Simultaneous supervision of +5V, +3.3V, user-defined, and -5V rails eliminates need for four discrete supervisors |
| Factory-trimmed precision thresholds | ±1.5% max threshold error over temperature ensures reliable reset activation without calibration |
| IN2-powered architecture | Eliminates separate VCC rail; device remains functional as long as IN2 ≥ 1V - critical for graceful shutdown |
| Transient-immune comparators | Rejects ≤100µs supply glitches (per MAX6339toc04), preventing spurious resets in noisy environments |
| No external components required | Full quad monitoring achieved with zero resistors/capacitors for standard configurations - reduces BOM count and board area |
Applications
| Telecom Line Cards | Industrial PLC Power Modules |
|---|---|
Use Scenario: Monitoring +5V control logic, +3.3V FPGA I/O, adjustable auxiliary bias, and -5V analog interface on a single line card. IC Role / Device Role / Timing Role: Quad supervisory circuit providing coordinated system reset and brownout detection across mixed-voltage domains. Use Value: Prevents firmware corruption by asserting RESET within 20µs of any rail drop and holding it ≥140ms for full processor recovery. |
Use Scenario: Supervising redundant 5V/3.3V DC-DC outputs, sensor bias voltage, and isolated -5V op-amp supply in programmable logic controllers. IC Role / Device Role / Timing Role: Centralized voltage integrity monitor with fail-safe reset signaling to CPU and watchdog timer. Use Value: Enables deterministic restart after AC dropout by maintaining RESET validity down to IN2 = 1V - extending supervision into deep brownout. |
| Network Switch Fabric Boards | High-End Printer Engine Controllers |
Use Scenario: Ensuring stable operation of ASIC core, SerDes I/O, memory interface, and management controller supplies in 10G switch line cards. IC Role / Device Role / Timing Role: Multi-rail supervisor interfacing directly with ASIC reset input and PMBus-configurable power sequencers. Use Value: Reduces PCB footprint by replacing four discrete supervisors while guaranteeing synchronized reset release timing across all rails. |
Use Scenario: Validating main logic, stepper motor drivers, thermal head bias, and analog sensor supplies during printer warm-up and print cycles. IC Role / Device Role / Timing Role: System-level power integrity guardian triggering controlled shutdown before thermal runaway or motor stall. Use Value: Uses adjustable IN3 to monitor custom 2.7V thermal sensor bias, and -5V IN4 to supervise analog front-end op-amps - eliminating design-specific components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6340PUT-T | Same pinout and package; fixed +5.0V/+3.3V/+2.5V/-5.0V thresholds (no adjustable IN3) | Lacks user-adjustable input; suitable only where all four rails match standard voltages | Select MAX6340PUT-T if IN3 does not require customization and tighter 2.5V monitoring is needed instead of adjustable range |
| TPS3307-33DGNR | Triple monitor (+3.3V/+3.3V/+3.3V) with manual reset input; no negative rail support; different pinout | Cannot monitor +5V or -5V; requires external components for non-3.3V rails | Choose TPS3307-33DGNR only for 3.3V-only systems needing manual reset override capability |
Compared with MAX6339PUT-T, MAX6340PUT-T offers identical form factor and timing but removes adjustability at IN3, while TPS3307-33DGNR sacrifices quad-rail flexibility and negative voltage support for manual reset functionality - making MAX6339PUT-T uniquely suited for mixed positive/negative, customizable multi-supply systems.
Availability
MAX6339PUT-T is available at Aetrix Electronics and suitable for telecommunications infrastructure, industrial PLCs, and network switch fabric boards requiring stable component supply, guaranteed lifecycle support, and traceable sourcing for production programs.
Supply support for MAX6339PUT-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 high-performance analog and mixed-signal ICs for power management, sensing, and interface applications, with emphasis on reliability and integration.
The MAX6339 series targets compact, low-power multi-rail supervision in space-constrained embedded systems - specifically engineered to replace discrete solutions in telecom, computing, and industrial control equipment.
FAQ
What is the exact voltage threshold for each input on the MAX6339PUT-T?
The MAX6339PUT-T has factory-set thresholds: IN1 = +5.0V at −10% (4.25V–4.50V), IN2 = +3.3V at −10% (2.85V–3.00V), IN3 = adjustable via external resistor divider referenced to 1.23V, and IN4 = −5.0V at +10% (−4.50V to −4.25V). These values are confirmed in the Electrical Characteristics table of the MAX6339 datasheet Rev 3.
Can the MAX6339PUT-T operate if only IN2 is powered?
Yes - the MAX6339PUT-T is powered exclusively from IN2, and RESET remains valid as long as IN1 ≥ 1V or IN2 ≥ 1V. This allows supervised reset assertion even during partial supply collapse, a key feature confirmed in Note 3 and Figure 1 of the MAX6339 datasheet.
Is the RESET output of the MAX6339PUT-T compatible with 5V logic systems?
Yes - the MAX6339PUT-T RESET output is open-drain and can be pulled up externally to any voltage from 0V to +5.5V. Its internal 10µA pullup connects to IN2, but an external pullup overrides it safely, enabling direct interface with 5V microcontrollers without level-shifting.
How does the MAX6339PUT-T handle short transients on monitored supplies?
The MAX6339PUT-T rejects transients ≤100µs duration (per Figure MAX6339toc04), thanks to built-in comparator hysteresis (0.3%) and internal filtering. This prevents false resets during switching noise or load-dump events - a behavior explicitly characterized and guaranteed in the Typical Operating Characteristics section.
What is the minimum supply voltage required for the MAX6339PUT-T to assert a valid RESET?
The MAX6339PUT-T guarantees RESET functionality down to IN1 = 1V or IN2 = 1V, as stated in Note 3 and the Absolute Maximum Ratings table. Below 1V on both pins, RESET behavior is undefined - this 1V lower limit is a hard specification, not a typical value.
MAX6339PUT-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:
- 3.3V, 5V, Adj, -5V
- 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
MAX6339PUT-T FAQ
1.How can I place an order for MAX6339PUT-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6339PUT-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 MAX6339PUT-T reliable?
The price and inventory of MAX6339PUT-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6339PUT-T is usually 5 days.
3.What payment methods are accepted for MAX6339PUT-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6339PUT-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6339PUT-T?
MAX6339PUT-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6339PUT-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 MAX6339PUT-T?
For technical support, including MAX6339PUT-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6339PUT-T requirements.
6.How does Aetrix verify that MAX6339PUT-T is sourced from the original manufacturer or authorized distributors?
All MAX6339PUT-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 MAX6339PUT-T meets industry standards.
7.What is the process for return or replacement of MAX6339PUT-T?
All MAX6339PUT-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6339PUT-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 MAX6339PUT-T part is unused and in its original packaging.
Return procedure for MAX6339PUT-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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