My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6339MUT
- Part No.:
- MAX6339MUT
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6339MUT.pdf
- Description:
- IC SUPERVISOR 4 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,824
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6339MUT from Maxim Integrated is a quad voltage supervisory IC that monitors +5.0V, +3.0V, user-adjustable, and -5.0V supply rails with ±10% threshold tolerance, delivers active-low open-drain RESET output, features 140ms minimum reset timeout, consumes only 55µA quiescent current, and operates across -40°C to +85°C - used in telecom and industrial multi-rail systems for reliable µP reset assertion.
For engineers reviewing the MAX6339MUT datasheet, MAX6339MUT pinout, MAX6339MUT application, or MAX6339MUT equivalent, this page provides verified circuit role, factory-trimmed threshold mapping, SOT23-6 package details, real-world timing behavior, and validated alternative options for multi-supply monitoring designs.
Technical Context
The MAX6339MUT uses an internal bandgap reference (1.23V) and four precision comparators with 0.3% hysteresis per channel to detect undervoltage on IN1 (+5V), IN2 (+3.0V), IN3 (user-adjustable via external resistor divider), and IN4 (-5V). It derives power solely from IN2 and guarantees RESET validity down to IN1 ≥ 1V or IN2 ≥ 1V.
Its open-drain RESET output includes a weak 10µA internal pullup to IN2 and asserts low when any input crosses its threshold - with 20µs typical delay and immunity to transients ≤ 1000µs at 50mV overdrive - enabling robust noise rejection in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Monitored Voltages | +5.0V (-10%), +3.0V (-10%), adjustable (1.23V reference), -5.0V (+10%) - matches common system rails without external resistors |
| Reset Timeout | 140ms min - ensures µP completes full power-up sequence before release |
| Supply Current | 55µA typ - enables use in always-on monitoring without significant power penalty |
| RESET Output Type | Open-drain with 10µA internal pullup to IN2 - eliminates need for external pullup in many 3.0V/3.3V logic interfaces |
| Operating Temp | -40°C to +85°C - qualified for extended industrial temperature operation |
| Input Validity Range | RESET remains valid while IN1 ≥ 1V or IN2 ≥ 1V - supports brownout detection during partial power loss |
| Threshold Accuracy | ±1.5% over temp - ensures consistent reset assertion across full operating range |
Pinout & Package
MAX6339MUT is housed in a 6-pin SOT23-6 package (2.9mm × 1.6mm × 1.1mm), optimized for space-constrained PCB layouts in telecom and embedded systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN1 | +5.0V monitor input (-10% threshold) | Accepts up to +6V; asserts RESET if voltage drops below 4.50V |
| 2 IN2 | +3.0V monitor input & device power supply (-10% threshold) | Supplies internal circuitry; must be ≥1V for RESET validity; powers internal pullup |
| 3 IN3 | User-adjustable monitor input (1.23V internal reference) | External resistor divider sets custom threshold; ±0.1µA input bias enables high-Z design |
| 4 IN4 | -5.0V monitor input (+10% threshold) | Accepts -6V to +0.3V; asserts RESET if voltage rises above -4.50V (undervoltage = less negative) |
| 5 GND | Analog and digital ground reference | Common return path for all comparators and bandgap reference; requires low-impedance connection |
| 6 RESET | Active-low open-drain reset output | Drives low when any input fails; pulled weakly to IN2; compatible with 0–5.5V logic supplies |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent voltage monitoring | Simultaneously supervises four distinct rails - eliminates need for four discrete supervisors or complex discrete networks |
| Factory-trimmed thresholds with hysteresis | 0.3% built-in hysteresis prevents chatter during slow supply ramps or noise-induced threshold crossings |
| Glitch-immune transient rejection | Rejects input transients ≤1000µs duration at 50mV overdrive - critical for stable operation in switching power supply environments |
| No external components required for standard rails | Supports +5V/-5V/+3.0V monitoring out-of-box; only IN3 requires external divider for customization |
| Low-voltage RESET validity | Guarantees functional RESET state even as IN1 or IN2 drops to 1.0V - enables early brownout detection |
Applications
| Telecommunications Power Systems | Industrial PLC Backplane Monitoring |
|---|---|
Use Scenario: Monitoring +5V control logic, +3.0V FPGA I/O, adjustable auxiliary rail, and -5V analog interface in telecom line cards. IC Role / Device Role / Timing Role: Quad supervisory circuit asserting single RESET signal to ARM-based controller upon any rail fault. Use Value: Reduces BOM count by replacing four discrete supervisors; 140ms timeout aligns with FPGA configuration time. |
Use Scenario: Supervising +5V CPU core, +3.0V communication module, adjustable sensor bias rail, and -5V op-amp supply in modular PLC backplanes. IC Role / Device Role / Timing Role: Centralized reset generator ensuring deterministic startup sequencing across distributed modules. Use Value: 55µA quiescent current enables always-on supervision without impacting standby power budget. |
| High-End Printer Engine Control | Network Storage Controller Board |
Use Scenario: Verifying +5V motor drivers, +3.0V SoC supply, adjustable thermal sensor reference, and -5V analog front-end in laser printer engines. IC Role / Device Role / Timing Role: Fault-detection hub triggering hard reset before mechanical actuation begins. Use Value: Immunity to short transients prevents spurious resets during stepper motor commutation spikes. |
Use Scenario: Monitoring +5V disk interface, +3.0V RAID controller, adjustable backup battery rail, and -5V legacy SCSI termination in NAS controller boards. IC Role / Device Role / Timing Role: Single-point reset arbiter coordinating SATA controller, flash cache, and Ethernet PHY initialization. Use Value: Open-drain RESET with IN2-referenced pullup simplifies level-shifting between 3.3V logic and 5V peripherals. |
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 | Same pinout, identical quad monitoring architecture, but with +5.0V (-5%), +3.3V (-5%), adjustable, -5.0V (+5%) thresholds | Better suited for systems requiring tighter tolerance on +3.3V and -5V rails | Select MAX6340MUT when +3.3V rail stability is more critical than +3.0V compatibility |
| TPS3307-33D | Triple-monitor IC (not quad); monitors +3.3V, +5V, and adjustable rail only; no negative voltage support | Lacks -5V monitoring capability and one input channel; requires external circuitry for -5V supervision | Choose TPS3307-33D only if -5V rail is absent and board space allows adding discrete -5V detector |
Compared with MAX6339MUT, MAX6340MUT offers tighter threshold tolerances on two rails but same package and timing; TPS3307-33D reduces channel count and omits negative voltage support, making it unsuitable for legacy analog subsystems requiring -5V validation.
Availability
MAX6339MUT is available at Aetrix Electronics and suitable for telecommunications infrastructure, industrial PLCs, high-end printers, and network storage equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6339MUT 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, communications, and computing markets.
The MAX6339 family was designed specifically for compact, low-power multi-rail supervision in space- and power-constrained embedded systems - delivering integrated accuracy, noise immunity, and rail flexibility in a minimal footprint.
FAQ
What voltage rails does the MAX6339MUT monitor?
The MAX6339MUT monitors four specific rails: IN1 at +5.0V with -10% threshold (4.50V), IN2 at +3.0V with -10% threshold (2.70V), IN3 as user-adjustable (based on 1.23V internal reference), and IN4 at -5.0V with +10% threshold (-4.50V). These values are factory-trimmed and documented in the Selector Guide for MAX6339MUT.
How does the MAX6339MUT handle power loss on IN2?
The MAX6339MUT derives power from IN2, but its RESET output remains valid as long as either IN1 ≥ 1V or IN2 ≥ 1V. During partial power loss, if IN2 drops below 1V but IN1 stays above 1V, the MAX6339MUT continues asserting RESET correctly - a key feature enabling brownout detection in asymmetric failure modes.
Can the MAX6339MUT monitor voltages other than those listed in the Selector Guide?
Yes - IN3 is explicitly user-adjustable using an external resistor divider referenced to the 1.23V internal threshold. The formula R1 = R2 × ((VINTH/1.23V) − 1) allows precise setting of any positive voltage >1.23V. For negative rails beyond -5V, an external divider on IN4 is also supported per Figure 5 in the datasheet.
What is the purpose of the 0.3% hysteresis in the MAX6339MUT?
The 0.3% hysteresis per comparator prevents oscillation during slow supply ramps or near-threshold noise. For example, the +5.0V (-10%) channel trips at 4.50V but releases only after rising to ~4.514V. This ensures clean, chatter-free RESET assertion and release - critical for reliable microprocessor boot sequences.
Is an external pullup resistor required for the MAX6339MUT RESET output?
No - the MAX6339MUT includes a 10µA internal pullup to IN2, sufficient for interfacing with 3.0V or 3.3V logic. An external pullup is only needed when driving logic with a different supply voltage (e.g., 5V or 1.8V), and must be sized to overdrive the internal pullup without exceeding 20mA sink current rating.
MAX6339MUT 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 FAQ
1.How can I place an order for MAX6339MUT through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6339MUT 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 reliable?
The price and inventory of MAX6339MUT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6339MUT is usually 5 days.
3.What payment methods are accepted for MAX6339MUT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6339MUT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6339MUT?
MAX6339MUT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6339MUT 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?
For technical support, including MAX6339MUT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6339MUT requirements.
6.How does Aetrix verify that MAX6339MUT is sourced from the original manufacturer or authorized distributors?
All MAX6339MUT 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 meets industry standards.
7.What is the process for return or replacement of MAX6339MUT?
All MAX6339MUT units undergo pre-shipment inspection (PSI). If there is an issue with MAX6339MUT, 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 part is unused and in its original packaging.
Return procedure for MAX6339MUT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6339MUT Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
