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Analog Devices Inc./Maxim Integrated MAX6714CUB+
- Part No.:
- MAX6714CUB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6714CUB+.pdf
- Description:
- IC SUPERVISOR 4 CHANNEL 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:173
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Product details
Overview
The MAX6714CUB+ from Maxim Integrated is a quad voltage monitor IC with one fixed VCC reset input (3.3V ±10%), three adjustable power-fail comparators (PFI1–PFI3), active-low open-drain RESET and PFO outputs, 140ms minimum reset timeout, and 60µA typical supply current. It operates from 2.0V to 5.5V and is used in multivoltage server power supervision where precise, low-power supply monitoring and µP reset generation are required.
For engineers reviewing the MAX6714CUB+ datasheet, MAX6714CUB+ pinout, MAX6714CUB+ application, or MAX6714CUB+ equivalent, key selection considerations include its 3.3V VCC reset threshold with 10% tolerance, integrated 140ms reset timing, three independent PFI inputs referenced to 0.62V, open-drain output drive capability, and operation across –40°C to +85°C.
Technical Context
The MAX6714CUB+ implements a dedicated internal bandgap reference (0.62V) for all three PFI inputs and uses resistor-divider networks to scale external voltages to this reference. Its RESET output combines undervoltage detection on VCC and manual reset assertion via MR, with built-in timeout logic ensuring minimum 140ms assertion after recovery.
Each PFI input features high-impedance (>1MΩ) sensing, ±2.0% threshold accuracy over temperature, and 0.3×VTH hysteresis. The device includes an internal 20kΩ MR pullup, undervoltage lockout forcing all outputs low below 2.0V, and wire-ORable open-drain outputs with 10µA internal pullups to VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 3.3V nominal, –10% trip point (2.93V min), factory-trimmed for precision |
| PFI Threshold Reference | 0.623V internal reference, enabling adjustable monitoring down to 0.62V |
| Reset Timeout Period | 140ms minimum, ensures reliable microprocessor reset hold time |
| Supply Current | 60µA typical at 5V, supports ultra-low-power system supervision |
| Operating Temperature | –40°C to +85°C, fully specified for industrial and telecom environments |
| Output Type | Active-low open-drain RESET and PFO outputs with 10µA internal pullup to VCC |
| MR Input | Internally pulled up to VCC (20kΩ), accepts TTL/CMOS logic or momentary switch |
Pinout & Package
MAX6714CUB+ is housed in a 10-pin µMAX package (3.0mm × 3.0mm, 0.6mm height), lead-free, with exposed pad for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - PFI3 | Power-Fail Input 3 | High-impedance comparator input referenced to 0.62V; external resistor divider sets monitored voltage |
| 2 - PFI2 | Power-Fail Input 2 | Same as PFI3; independent threshold setting for third supply rail |
| 3 - PFI1 | Power-Fail Input 1 | Same as PFI3; enables monitoring of three auxiliary supplies |
| 4 - GND | Ground Reference | Common return path for all analog and digital circuitry; must be low-impedance |
| 5 - MR | Manual Reset Input | Active-low control pin with internal 20kΩ pullup to VCC; initiates RESET assertion when pulled low |
| 6 - RESET | Reset Output | Active-low open-drain output asserting for ≥140ms after VCC recovery or MR release |
| 7 - PFO1 | Power-Fail Output 1 | Active-low open-drain output tied to PFI1 status; 10µA internal pullup to VCC |
| 8 - PFO2 | Power-Fail Output 2 | Same as PFO1; independent status signal for second PFI input |
| 9 - PFO3 | Power-Fail Output 3 | Same as PFO1; provides third independent power-fail flag |
| 10 - VCC | Supply Input | 2.0V–5.5V power input; also monitored for reset; powers internal reference and logic |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 140ms reset timer | Eliminates need for external RC timing components in µP reset circuits |
| Three independent PFI inputs | Enables simultaneous monitoring of three non-VCC rails (e.g., 12V, 5V, 3.3V) using single 0.62V reference |
| 0.62V internal reference accuracy | ±2.0% over temperature ensures stable threshold scaling for all PFI inputs |
| 20kΩ internal MR pullup | Allows direct connection of momentary switch to GND without external resistor |
| 10µA internal output pullups | Supports direct interfacing to 3.3V/5V logic without external pullups; overdrivable to 0–5.5V |
Applications
| Server Power Sequencing | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitoring 3.3V main VCC and three auxiliary rails (e.g., 12V bias, 5V analog, 2.5V ADC) during cold start and brownout events. IC Role / Device Role / Timing Role: Provides VCC reset assertion and three independent PFO flags to coordinate FPGA configuration, analog subsystem enable, and communication interface initialization. Use Value: Guarantees 140ms minimum reset hold time and eliminates external timing components while supporting rail-specific fault isolation. | Use Scenario: Supervising dual 24V DC input redundancy, isolated 5V logic supply, and 3.3V microcontroller core voltage in harsh industrial environments. IC Role / Device Role / Timing Role: Acts as centralized power-good arbiter and reset generator, with MR input supporting field-service reset initiation. Use Value: Delivers ±2.0% threshold accuracy over –40°C to +85°C and immune-to-transient operation ensures reliable operation in electrically noisy settings. |
| Telecom Line Card | Network Storage Controller |
Use Scenario: Monitoring hot-swap 3.3V, 1.8V, and 1.2V supplies on a modular line card with strict power-up sequencing requirements. IC Role / Device Role / Timing Role: Generates synchronized PFO signals and RESET to gate clock distribution and memory initialization until all rails stabilize. Use Value: Adjustable PFI thresholds allow precise matching to each rail's tolerance (e.g., 1.8V ±5%), reducing false trips during transient load steps. | Use Scenario: Ensuring clean power-up of RAID controller ASIC, DDR3 memory, and SATA PHY in enterprise storage enclosures. IC Role / Device Role / Timing Role: Monitors 3.3V VCC for primary reset and three auxiliary rails (e.g., 1.5V DDR, 1.2V core, 2.5V PHY) to prevent partial initialization. Use Value: 60µA supply current minimizes impact on standby power budget while maintaining full functionality across extended temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6714DUB+ | Same 3.3V VCC reset but –5% tolerance (2.93V–3.15V vs. 2.85V–3.00V); identical PFI architecture | Suitable where tighter VCC tolerance is required (e.g., 3.3V ±5% systems) | Select MAX6714DUB+ if system VCC regulation meets ±5%; otherwise MAX6714CUB+ matches ±10% specs. |
| TPS3808G33DBVR | Single 3.3V supervisor with 200ms timeout; no PFI inputs; SOT-23-6 package | Lacks multi-rail monitoring capability; only monitors VCC | Use only when only VCC supervision is needed and board space is constrained; not a functional substitute for quad monitoring. |
Compared with MAX6714DUB+, MAX6714CUB+ offers looser VCC trip tolerance ideal for less-regulated 3.3V supplies, while both share identical PFI flexibility and timing. Against TPS3808G33DBVR, MAX6714CUB+ adds three independent power-fail channels and larger package-critical for multivoltage system integrity but requiring more PCB area.
Availability
MAX6714CUB+ is available at Aetrix Electronics and suitable for server power sequencing, industrial PLC I/O modules, telecom line cards, and network storage controllers requiring stable component supply and long-term industrial lifecycle support.
Supply support for MAX6714CUB+ 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 in industrial, communications, and computing markets.
The MAX67xx family delivers highly accurate, low-quiescent-current voltage supervisors optimized for multivoltage systems where reliability, small footprint, and minimal external components are critical design requirements.
FAQ
What is the exact VCC reset threshold voltage for MAX6714CUB+?
The MAX6714CUB+ has a factory-trimmed VCC reset threshold of 3.3V nominal with –10% tolerance, meaning it asserts RESET when VCC falls below 2.85V (min) and releases RESET when VCC rises above 3.00V (max). This is confirmed in the Electrical Characteristics table for MAX6714C under "VCC Reset Threshold".
Does MAX6714CUB+ support monitoring of voltages other than VCC?
Yes, MAX6714CUB+ supports monitoring of three additional voltages via its PFI1, PFI2, and PFI3 inputs. Each compares an externally scaled voltage to an internal 0.623V reference, enabling precise monitoring of rails such as 12V, 5V, or 1.8V using external resistor dividers-as documented in the Applications Information section and Figure 7.
What is the function of the MR pin on MAX6714CUB+?
The MR (Manual Reset) pin on MAX6714CUB+ is an active-low input that forces the RESET output low when asserted. It features a 20kΩ internal pullup to VCC, allowing direct connection to a momentary switch to ground. After MR is released, RESET remains low for the full 140ms timeout period, as specified in the Electrical Characteristics table under "Reset Timeout Period".
Can MAX6714CUB+ outputs interface directly with 5V logic systems?
Yes, MAX6714CUB+ open-drain outputs (RESET, PFO1–PFO3) can interface directly with 5V logic. Their 10µA internal pullups to VCC are overdrivable-external pullups to 5V are supported, and internal circuitry prevents reverse current flow from the external pullup to VCC, as stated in the Detailed Description and Applications Information sections.
Is MAX6714CUB+ qualified for operation across the full industrial temperature range?
Yes, MAX6714CUB+ is fully specified and guaranteed to operate from –40°C to +85°C. All key parameters-including threshold accuracy (±2.0%), reset timeout (140ms min), and supply current-are characterized across this extended temperature range, as confirmed in the Absolute Maximum Ratings, Electrical Characteristics, and Features sections.
MAX6714CUB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 4
- Voltage - Threshold:
- 2.93V, Adj, Adj, 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:
- 10-uMAX/uSOP
MAX6714CUB+ FAQ
1.How can I place an order for MAX6714CUB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6714CUB+ 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 MAX6714CUB+ reliable?
The price and inventory of MAX6714CUB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6714CUB+ is usually 5 days.
3.What payment methods are accepted for MAX6714CUB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6714CUB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6714CUB+?
MAX6714CUB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6714CUB+ 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 MAX6714CUB+?
For technical support, including MAX6714CUB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6714CUB+ requirements.
6.How does Aetrix verify that MAX6714CUB+ is sourced from the original manufacturer or authorized distributors?
All MAX6714CUB+ 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 MAX6714CUB+ meets industry standards.
7.What is the process for return or replacement of MAX6714CUB+?
All MAX6714CUB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6714CUB+, 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 MAX6714CUB+ part is unused and in its original packaging.
Return procedure for MAX6714CUB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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