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Analog Devices Inc./Maxim Integrated MAX6339OUT+T
- Part No.:
- MAX6339OUT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6339OUT+T.pdf
- Description:
- IC SUPERVISOR 4 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,419
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Product details
Overview
MAX6339OUT+T from Maxim Integrated is a quad voltage supervisory IC that monitors +5.0V, +3.3V, adjustable, and -5.0V supply rails with ±10% threshold tolerance. It provides a single active-low open-drain RESET output with 140ms minimum timeout, operates from IN2 supply (1.0V to 5.5V), draws only 55µA quiescent current, and functions across -40°C to +85°C. It is used in telecom and industrial systems requiring reliable multi-rail power monitoring without external components.
For engineers reviewing the MAX6339OUT+T datasheet, MAX6339OUT+T pinout, MAX6339OUT+T application, or MAX6339OUT+T equivalent, key selection criteria include its factory-trimmed -5V monitoring capability, 1.23V adjustable input reference, guaranteed reset validity down to IN1/IN2 = 1V, immunity to short transients, and SOT23-6 packaging for space-constrained embedded designs.
Technical Context
The MAX6339OUT+T integrates four precision comparators with an internal 1.23V bandgap reference and fixed resistor-divider networks for +5.0V, +3.3V, and -5.0V thresholds, plus one user-adjustable input (IN3) referenced to 1.23V. Its architecture supports independent undervoltage detection per rail, with built-in 0.3% hysteresis per comparator to suppress noise-induced false resets.
RESET assertion is controlled by a NOR gate combining all comparator outputs; the resulting open-drain signal features a weak 10µA internal pullup to IN2 and remains valid as long as IN1 ≥ 1V or IN2 ≥ 1V - enabling robust reset hold during brownout recovery. The device is powered solely from IN2 and requires no external timing or biasing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| +5V Threshold | 4.50V min / 4.63V typ / 4.75V max (-5% tolerance); ensures reset asserts before 5V rail drops below system logic margin |
| +3.3V Threshold | 3.00V min / 3.08V typ / 3.15V max (-5% tolerance); matches standard 3.3V I/O supply derating |
| -5V Threshold | -4.50V min / -4.38V typ / -4.25V max (+10% tolerance); detects overvoltage on negative rail |
| Adjustable Input Ref | 1.20V–1.26V (±2.5%); enables precise custom threshold setting via external resistor divider |
| Reset Timeout | 140ms min / 200ms typ / 280ms max; guarantees sufficient processor reset hold time after supply recovery |
| Supply Current | 55µA typ at VIN2 = 3.3V; enables always-on supervision in low-power systems without battery drain |
| Operating Temp | -40°C to +85°C; qualified for industrial and telecom equipment environments |
Pinout & Package
The MAX6339OUT+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 monitored input | Fixed-threshold input; asserts RESET if voltage falls below 4.50V (−5% of 5V) |
| 2 - IN2 | Power supply & +3.3V monitored input | Primary power source for IC; also monitors own supply rail; RESET valid if ≥1V |
| 3 - IN3 | User-adjustable monitored input | Accepts external resistor divider; internal reference = 1.23V; supports custom thresholds >1.23V |
| 4 - IN4 | -5.0V monitored input | Detects negative rail overvoltage; triggers RESET when IN4 rises above -4.50V (+10% of -5V) |
| 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 | Pulled low when any input violates threshold; internal 10µA pullup to IN2; compatible with 0–5.5V logic |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent voltage monitoring | Simultaneously supervises four distinct rails (+5V, +3.3V, adjustable, -5V) with no shared accuracy degradation |
| Factory-trimmed precision thresholds | ±1.5% typical threshold accuracy over temperature; eliminates need for calibration or trimming resistors |
| 1.23V adjustable reference input | Enables accurate custom monitoring of voltages >1.23V using two standard resistors (R1/R2 ≤100kΩ) |
| 1V minimum supply validity | RESET remains functional and correctly asserted even as IN1 or IN2 decays to 1.0V - critical for graceful brownout handling |
| Transient-immune comparator design | Rejects input glitches <200µs duration (at 50mV overdrive), preventing spurious resets in noisy power environments |
Applications
| Telecommunications Equipment | Industrial Control Systems |
|---|---|
Use Scenario: Monitoring redundant +5V, +3.3V, auxiliary, and -5V bias supplies in line cards and optical modules. IC Role / Device Role / Timing Role: Quad voltage supervisor ensuring synchronized processor reset and fault isolation across multiple power domains. Use Value: Eliminates discrete supervisor ICs and reduces BOM count by 75%, while guaranteeing 140ms reset hold time for FPGA configuration integrity. | Use Scenario: Supervising PLC I/O module power rails including isolated -5V analog reference and digital +3.3V logic. IC Role / Device Role / Timing Role: Single-chip solution detecting undervoltage on positive rails and overvoltage on negative rails to prevent analog corruption. Use Value: Built-in -5V monitoring with +10% tolerance avoids external level-shifting circuitry, reducing layout complexity and EMI susceptibility. |
| High-End Printers | Data Storage Controllers |
Use Scenario: Validating main +5V motor drive, +3.3V controller, adjustable sensor bias, and -5V analog front-end supplies. IC Role / Device Role / Timing Role: Centralized reset generator coordinating cold-start sequencing and thermal shutdown recovery. Use Value: Adjustable IN3 input allows precise 2.85V monitoring for CMOS image sensor bias, improving dynamic range stability. | Use Scenario: Ensuring clean power-up of SAS/SATA controller ASICs requiring strict sequencing between +5V, +3.3V, and negative termination rails. IC Role / Device Role / Timing Role: Fault-detection hub asserting system reset if any rail deviates - especially critical for -5V termination compliance. Use Value: Guaranteed operation down to IN2 = 1V enables reliable reset assertion during gradual AC dropout events in enterprise storage enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6340OUT+T | Same pinout and package; identical +5V/+3.3V/-5V thresholds but with -5% tolerance on all rails (vs. +10% on -5V for MAX6339OUT+T) | Preferred where tighter -5V overvoltage detection window is required (e.g., legacy analog subsystems) | Select MAX6340OUT+T when -5V threshold accuracy must be ±5% instead of ±10% |
| TPS3307-33D | Triple-supply monitor (+5V, +3.3V, +3.3V); no -5V or adjustable input; 200ms fixed timeout; higher 100µA supply current | Lacks negative rail support and programmability; suitable only for dual-positive-rail systems | Choose TPS3307-33D only if -5V monitoring and adjustable threshold are not required |
Compared with MAX6340OUT+T and TPS3307-33D, the MAX6339OUT+T uniquely combines factory-set -5V overvoltage detection with a user-adjustable input in SOT23-6 - enabling compact, multi-rail supervision where negative bias integrity and custom voltage thresholds are both essential.
Availability
MAX6339OUT+T is available at Aetrix Electronics and suitable for telecommunications infrastructure, industrial control systems, and data storage equipment requiring stable component supply and guaranteed long-term availability.
Supply support for MAX6339OUT+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 MAX6339OUT+T belongs to Maxim's µP supervisory product line, engineered specifically for space-constrained, multi-rail systems needing simultaneous monitoring of positive, negative, and custom voltage rails with minimal external components.
FAQ
What voltage rails does the MAX6339OUT+T monitor?
The MAX6339OUT+T monitors four distinct rails: IN1 is factory-set to +5.0V (−5% threshold), IN2 serves as both power supply and +3.3V monitor (−5%), IN3 is user-adjustable via external resistor divider (1.23V reference), and IN4 monitors −5.0V with +10% tolerance. This configuration is explicitly defined in the Selector Guide for MAX6339OUT+T (top mark AAKI).
How does the MAX6339OUT+T handle brownout conditions on IN2?
The MAX6339OUT+T remains operational and maintains valid RESET assertion as long as IN2 ≥ 1.0V - confirmed in Electrical Characteristics Note 3 and Absolute Maximum Ratings. During brownout, the internal circuitry sustains comparator function and timeout timing, ensuring the 140ms minimum reset pulse is fully delivered before release, even if IN2 decays to 1V.
Can the MAX6339OUT+T monitor voltages other than +5V, +3.3V, and -5V?
Yes - the MAX6339OUT+T includes one user-adjustable input (IN3) with a precise 1.23V internal reference. By connecting an external resistor divider, designers can set custom thresholds for voltages greater than 1.23V (e.g., 2.85V for image sensors). The formula R1 = R2 × ((VINTH/1.23V) − 1) and ±0.1µA input current specification enable accurate implementation.
What is the function of the RESET pin on the MAX6339OUT+T?
The RESET pin on the MAX6339OUT+T is an active-low open-drain output that goes low whenever any monitored input violates its threshold. It features a weak 10µA internal pullup to IN2, eliminating the need for an external pullup in many cases. The output remains low for ≥140ms after all inputs recover, providing guaranteed reset hold time for microprocessors and FPGAs.
Is the MAX6339OUT+T compatible with lead-free PCB assembly processes?
Yes - the MAX6339OUT+T is supplied in lead-free packaging, as indicated by the "+T" suffix in the part number. It complies with RoHS requirements and supports standard reflow soldering profiles, including peak temperatures up to +300°C for 10 seconds, per Absolute Maximum Ratings.
MAX6339OUT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 4
- Voltage - Threshold:
- 2.93V, 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-6
MAX6339OUT+T FAQ
1.How can I place an order for MAX6339OUT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6339OUT+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 MAX6339OUT+T reliable?
The price and inventory of MAX6339OUT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6339OUT+T is usually 5 days.
3.What payment methods are accepted for MAX6339OUT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6339OUT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6339OUT+T?
MAX6339OUT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6339OUT+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 MAX6339OUT+T?
For technical support, including MAX6339OUT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6339OUT+T requirements.
6.How does Aetrix verify that MAX6339OUT+T is sourced from the original manufacturer or authorized distributors?
All MAX6339OUT+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 MAX6339OUT+T meets industry standards.
7.What is the process for return or replacement of MAX6339OUT+T?
All MAX6339OUT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6339OUT+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 MAX6339OUT+T part is unused and in its original packaging.
Return procedure for MAX6339OUT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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