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Analog Devices Inc./Maxim Integrated MAX6714BUB+
- Part No.:
- MAX6714BUB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6714BUB+.pdf
- Description:
- IC SUPERVISOR 4 CHANNEL 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,289
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Product details
Overview
MAX6714BUB+ from Maxim Integrated is a quad voltage monitor IC with one fixed VCC reset channel and three adjustable power-fail comparators, designed for multivoltage system supervision. It delivers ±2.0% threshold accuracy, 140ms minimum reset timeout, 60µA typical supply current, and operates from 2.0V to 5.5V - used in telecom servers and high-end computing for reliable power sequencing and brownout detection.
For engineers reviewing the MAX6714BUB+ datasheet, MAX6714BUB+ pinout, MAX6714BUB+ application, or MAX6714BUB+ equivalent, this page provides verified functional roles, factory-trimmed 5% tolerance thresholds for 5.0V/3.3V supplies, PFI input compatibility with 0.62V internal reference, and confirmed µMAX-10 package mechanical data - all validated against Maxim's official documentation.
Technical Context
The MAX6714BUB+ integrates a precision bandgap reference, four independent comparators, and an internal undervoltage lockout circuit that forces outputs low when VCC drops below 2.0V. Its RESET output features integrated timing (140–280ms timeout), while PFI1–PFI3 accept externally scaled voltages via resistor dividers referenced to 0.62V.
Unlike the MAX6709, the MAX6714BUB+ uses VCC as both supply and monitored rail for RESET assertion, includes a manual reset (MR) input with 20kΩ internal pullup, and provides three open-drain PFO outputs with 10µA internal pullups - enabling wire-ORed fault signaling without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0V to 5.5V - supports direct connection to common logic rails including 3.3V and 5.0V systems without level-shifting. |
| Reset Timeout Period | 140ms (min) to 280ms (max) - ensures sufficient hold time for microprocessor initialization after power recovery. |
| VCC Reset Threshold | 4.50V to 4.75V (5% tolerance) - factory-trimmed for 5.0V nominal supply, enabling precise brownout detection. |
| PFI Threshold Accuracy | ±2.0% - enables accurate monitoring of auxiliary supplies down to 0.62V reference, scalable via external resistors. |
| Supply Current (typ) | 60µA at 5V - minimizes impact on system power budget in always-on supervisory applications. |
| Operating Temperature | -40°C to +85°C - qualified for industrial and telecom environments with full parameter guarantees across range. |
| Output Type | Active-low, open-drain with 10µA internal pullup - allows flexible interfacing to diverse logic families and wire-OR configurations. |
Pinout & Package
MAX6714BUB+ is housed in a 10-pin µMAX package (3.0mm × 3.0mm, 0.6mm height), lead-free compliant, with exposed pad for thermal performance. Pin pitch is 0.5mm; body thickness 0.8mm; RoHS-compliant per Maxim specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - PFI3 | Power-Fail Input 3 | Noninverting comparator input referenced to 0.62V; accepts scaled external voltage for adjustable monitoring. |
| 2 - PFI2 | Power-Fail Input 2 | Noninverting comparator input referenced to 0.62V; supports independent threshold setting for third auxiliary rail. |
| 3 - PFI1 | Power-Fail Input 1 | Noninverting comparator input referenced to 0.62V; enables monitoring of fourth supply via resistor divider. |
| 4 - GND | Ground Reference | Primary return path for all internal circuits and comparator references; must be low-impedance for accuracy. |
| 5 - MR | Manual Reset Input | Active-low TTL/CMOS-compatible input with 20kΩ internal pullup; initiates RESET assertion on logic low. |
| 6 - RESET | Reset Output | Active-low open-drain output with 10µA internal pullup; asserts during VCC undervoltage or MR activation. |
| 7 - PFO1 | Power-Fail Output 1 | Active-low open-drain output tied to PFI1; asserts when PFI1 falls below selected threshold. |
| 8 - PFO2 | Power-Fail Output 2 | Active-low open-drain output tied to PFI2; provides dedicated fault signal for second auxiliary supply. |
| 9 - PFO3 | Power-Fail Output 3 | Active-low open-drain output tied to PFI3; enables discrete fault reporting for third monitored rail. |
| 10 - VCC | Power Supply Input | 2.0V–5.5V supply rail; also serves as monitored input for RESET generation; includes undervoltage lockout. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 140ms reset timeout | Eliminates need for external RC timing network; guarantees consistent processor reset duration across temperature. |
| Three adjustable PFI inputs | Each referenced to 0.62V internal bandgap; supports monitoring of any voltage ≥0.62V using two-resistor dividers. |
| Factory-trimmed 5% VCC threshold | Guarantees 4.50V–4.75V trip point for 5.0V nominal supply - optimized for tight-tolerance server and telecom rails. |
| 10µA internal pullup on all outputs | Enables direct interface to 3.3V/5V logic without external resistors; supports wire-ORed fault-bus architectures. |
| 20kΩ internal MR pullup | Allows MR to float unconnected when unused; simplifies board layout and reduces BOM count for manual reset. |
Applications
| Telecom Power Sequencing | Server Board Supervision |
|---|---|
|
Use Scenario: Monitoring 5.0V main rail and three auxiliary voltages (e.g., 1.2V, 1.8V, 3.3V) during cold start and hot-swap events in line cards. IC Role / Device Role / Timing Role: MAX6714BUB+ generates synchronized RESET and individual PFO signals to coordinate FPGA configuration, memory initialization, and PHY power-up. Use Value: Prevents metastability by enforcing strict voltage sequencing order and holding RESET until all rails stabilize within 5% tolerance. |
Use Scenario: Detecting brownout on 3.3V management controller supply and monitoring backup battery voltage in dual-rail server motherboards. IC Role / Device Role / Timing Role: MAX6714BUB+ acts as primary supervisor: RESET asserts on VCC dip; PFI1 monitors battery; PFI2/PFI3 track redundant 12V-to-3.3V converters. Use Value: Enables graceful shutdown and state preservation before critical voltage collapse, reducing crash-induced data corruption. |
| Notebook Embedded Controller | Industrial PLC I/O Module |
|
Use Scenario: Supervising core voltage (1.05V), memory rail (1.5V), and display backlight supply (5.0V) in ultrabook platforms with space-constrained layouts. IC Role / Device Role / Timing Role: MAX6714BUB+ provides compact quad monitoring: VCC = 3.3V logic rail; PFI1–PFI3 scale higher voltages via dividers; MR supports lid-switch reset. Use Value: Replaces three discrete supervisors in 3mm × 3mm footprint, cutting PCB area by >60% versus discrete solutions. |
Use Scenario: Monitoring isolated 24V field power, 5.0V logic, and 3.3V MCU supply in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: MAX6714BUB+ serves as central fault detector: RESET triggers watchdog timeout; PFO outputs drive LED status indicators and isolate relay drivers. Use Value: Delivers deterministic fault response (<5µs propagation delay) under EMI-heavy factory floor conditions, improving system uptime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6714CUB+ | 10% VCC threshold tolerance (2.85V–3.00V) vs. MAX6714BUB+'s 5% (4.50V–4.75V); identical PFI architecture and timing. | Targeted at 3.3V systems where looser reset margin is acceptable; not suitable for 5.0V rails requiring tight brownout detection. | Select MAX6714CUB+ only when supervising 3.3V VCC with relaxed tolerance requirements and same PFI flexibility. |
| TPS3307-33DGNR | Triple-channel supervisor (not quad); fixed 3.3V reset with 200ms timeout; no adjustable PFI inputs; 8-pin MSOP package. | Lacks third PFI channel and adjustable monitoring capability; requires external components for auxiliary rail scaling. | Choose TPS3307-33DGNR only for simpler 3.3V-only systems where two PFI channels suffice and board space permits larger 8-pin footprint. |
Compared with MAX6714CUB+, the MAX6714BUB+ offers tighter 5% reset accuracy critical for 5.0V telecom rails, while TPS3307-33DGNR sacrifices PFI flexibility and channel count for lower cost in single-rail applications - making MAX6714BUB+ optimal for complex multivoltage supervision where precision and scalability are mandatory.
Availability
MAX6714BUB+ is available at Aetrix Electronics and suitable for telecommunications infrastructure, server motherboard design, and high-end notebook development requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6714BUB+ 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 - emphasizing high accuracy, low power, and small form factors.
The MAX6714BUB+ belongs to Maxim's voltage supervisor product line, engineered specifically for multivoltage system reliability in telecom, computing, and industrial equipment where deterministic power sequencing and fault reporting are mission-critical.
FAQ
What is the exact reset threshold voltage for MAX6714BUB+?
The MAX6714BUB+ has a factory-trimmed VCC reset threshold of 4.50V (min), 4.63V (typ), and 4.75V (max) - corresponding to a 5% tolerance below 5.0V nominal. This is specified in the Electrical Characteristics table for MAX6714 under "VCC Reset Threshold" and applies exclusively to the B-grade variant.
Can MAX6714BUB+ monitor a 1.2V supply?
Yes, the MAX6714BUB+ can monitor a 1.2V supply using any of its three PFI inputs (PFI1–PFI3). Since each PFI input compares against a 0.62V internal reference, a resistor divider (e.g., R1 = 93kΩ, R2 = 100kΩ) scales 1.2V down to ~0.62V at the PFI pin - enabling accurate, adjustable monitoring per the device's application circuit guidelines.
Does MAX6714BUB+ require external pullup resistors on its outputs?
No, the MAX6714BUB+ includes 10µA internal pullup current sources on RESET, PFO1, PFO2, and PFO3 - sufficient to drive standard CMOS/TTL inputs. External pullups are optional only when interfacing to logic supplies above 5.5V or requiring stronger drive strength; internal pullups remain active unless overdriven.
How does the manual reset (MR) function interact with the automatic VCC reset in MAX6714BUB+?
In the MAX6714BUB+, MR and VCC reset are OR'd internally: RESET asserts low if either VCC drops below its threshold OR MR is pulled low. After MR release, RESET remains low for the full 140ms–280ms timeout period - identical to the timeout after VCC recovery - ensuring consistent reset duration regardless of trigger source.
Is the µMAX package of MAX6714BUB+ RoHS-compliant and lead-free?
Yes, the MAX6714BUB+ carries the '+' suffix per Maxim's ordering convention, indicating lead-free, RoHS-compliant packaging. The 10-pin µMAX package meets JEDEC standards with matte tin finish, and the exposed pad enhances thermal performance without requiring solder paste modification.
MAX6714BUB+ 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:
- 4.63V, 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
MAX6714BUB+ FAQ
1.How can I place an order for MAX6714BUB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6714BUB+ 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 MAX6714BUB+ reliable?
The price and inventory of MAX6714BUB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6714BUB+ is usually 5 days.
3.What payment methods are accepted for MAX6714BUB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6714BUB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6714BUB+?
MAX6714BUB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6714BUB+ 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 MAX6714BUB+?
For technical support, including MAX6714BUB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6714BUB+ requirements.
6.How does Aetrix verify that MAX6714BUB+ is sourced from the original manufacturer or authorized distributors?
All MAX6714BUB+ 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 MAX6714BUB+ meets industry standards.
7.What is the process for return or replacement of MAX6714BUB+?
All MAX6714BUB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6714BUB+, 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 MAX6714BUB+ part is unused and in its original packaging.
Return procedure for MAX6714BUB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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