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Analog Devices Inc./Maxim Integrated MAX6758UTWD3
- Part No.:
- MAX6758UTWD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6758UTWD3.pdf
- Description:
- IC SUPERVISOR SGL VOLT WINDOW
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6758UTWD3 from Maxim Integrated is a single-supply, low-power window voltage detector with independent undervoltage (UV) and overvoltage (OV) push-pull outputs, ±10% factory-trimmed threshold window (3.3V nominal), 100ms minimum reset timeout, and manual reset input. It monitors microprocessor I/O supply rails in industrial controllers and telecom power modules where precise, latch-free fault signaling is required.
For engineers reviewing the MAX6758UTWD3 datasheet, MAX6758UTWD3 pinout, MAX6758UTWD3 application, or MAX6758UTWD3 equivalent, this device delivers deterministic UV/OV detection with 20µs propagation delay, immunity to 300ns transients, and guaranteed output validity down to VCC = 1.0V - critical for brownout resilience in embedded systems.
Technical Context
The MAX6758UTWD3 implements dual independent comparators against a precision internal reference, with SET pin configured for ±10% window (SET = VCC). Its UV and OV outputs are active-high push-pull, eliminating external pull-ups and enabling direct interface to µP NMI or interrupt inputs.
It features a 100ms minimum timeout period (D3 suffix), manual reset (MR) with 26kΩ internal pull-up, and operates across -40°C to +125°C. Output logic states remain valid even as VCC drops to 1.0V, supporting fail-safe behavior during gradual supply collapse.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.0V to 6.0V - enables operation during deep brownout while maintaining correct output state |
| UV/OV Threshold (Nominal) | 3.3V ±10% - factory-trimmed for 3.3V I/O rail monitoring without external resistors |
| Reset Timeout Period | 100ms (min) - ensures stable processor reset after supply recovery, per JEDEC JESD79-4B |
| Supply Current (ICC) | 13µA (typ) at 3.6V - ultra-low quiescent current for battery-backed or always-on systems |
| Propagation Delay | 20µs (typ) - fast response to supply faults, minimizing system exposure to out-of-spec conditions |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive, industrial PLC, and base station applications |
| Output Type | Active-high push-pull UV and OV - eliminates need for external pull-up resistors, reduces BOM count |
Pinout & Package
MAX6758UTWD3 is housed in a 6-pin SOT23-6 package (3.0mm × 1.7mm × 1.3mm), optimized for space-constrained PCB layouts in telecom and computing modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC | Power Input & Monitored Supply | Primary supply input and monitored voltage rail; powers internal circuitry and sets detection thresholds |
| 2 - GND | Ground Reference | Analog and digital ground return; must be low-impedance connection to minimize noise coupling |
| 3 - MR | Active-Low Manual Reset Input | Drives UV output high when pulled low; internally pulled up to VCC via 26kΩ resistor |
| 4 - UV | Active-High Undervoltage Output | Asserts high when VCC falls below UVTH (2.97V min); deasserts after 100ms timeout upon recovery |
| 5 - OV | Active-Low Overvoltage Output | Asserts low when VCC exceeds OVTH (3.63V max); no timeout - immediate release on threshold exit |
| 6 - SET | Window Threshold Select | Connected to VCC for ±10% window; configures hysteresis and threshold accuracy without external components |
Key Features
| Feature | Design Value |
|---|---|
| Independent UV and OV outputs | Enables separate fault handling - e.g., UV triggers safe shutdown while OV initiates crowbar protection |
| 100ms minimum reset timeout (D3) | Guarantees µP reset pulse meets ARM/Intel minimum assertion time requirements for reliable boot initialization |
| 20µs propagation delay | Meets real-time control loop timing budgets in motor drives and power converters requiring rapid fault isolation |
| 300ns transient immunity | Rejects EFT/burst noise per IEC 61000-4-4 Level 4 without external filtering, reducing layout complexity |
| VCC-down-to-1.0V output validity | Maintains correct logic state during slow power ramp-down, preventing spurious resets in backup power scenarios |
Applications
| Telecom DC-DC Modules | Industrial PLC Power Monitoring |
|---|---|
Use Scenario: Monitoring 3.3V I/O supply in LTE remote radio head DC-DC converter modules subject to load transients and thermal cycling. IC Role / Device Role / Timing Role: Window detector providing independent UV/OV flags to FPGA supervisory logic with 100ms debounce and 20µs fault capture. Use Value: Prevents firmware corruption by ensuring µP reset only occurs after sustained undervoltage, while enabling immediate OV shutdown to protect downstream FETs. |
Use Scenario: Supervising 3.3V fieldbus interface supply in DIN-rail mounted PLCs operating at 85°C ambient. IC Role / Device Role / Timing Role: Fault detector asserting active-high UV to ARM Cortex-M7 NMI pin and active-low OV to analog watchdog timer. Use Value: Guarantees deterministic fault response across full industrial temperature range without calibration drift or external components. |
| Automotive Body Control Module | Server Management Controller |
Use Scenario: Validating 3.3V CAN transceiver supply in BCMs exposed to load dump and cold crank conditions. IC Role / Device Role / Timing Role: Single-supply window monitor with MR input tied to ignition switch, generating clean reset pulses during key-on sequencing. Use Value: Eliminates need for discrete resistor divider and dual comparators, reducing footprint by >40% vs. discrete solution. |
Use Scenario: Monitoring 3.3V BMC auxiliary rail in 1U rack servers where supply stability affects IPMI communication integrity. IC Role / Device Role / Timing Role: Dedicated UV/OV supervisor feeding ASPEED AST2600 reset management unit with push-pull outputs. Use Value: Push-pull outputs drive BMC inputs directly - no pull-up loading, no signal degradation over 5cm trace lengths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar window voltage detection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6757UTWD3 | Active-low UV output (vs. MAX6758UTWD3's active-high UV) | Requires level-shifting or inverted logic interpretation in µP interrupt path | Select when legacy design uses active-low NMI or requires consistent polarity with existing MAX6757-based boards |
| TLV809K33DBZR | Single UV reset IC (no OV detection), 3.3V fixed threshold, open-drain output, no SET pin or timeout option | Lacks overvoltage protection and independent UV/OV signaling; requires external OV circuit | Choose only for cost-sensitive, UV-only applications where OV monitoring is handled separately |
Compared with MAX6757UTWD3 and TLV809K33DBZR, MAX6758UTWD3 uniquely provides active-high UV with matched timing and full window supervision in one SOT23-6 package - simplifying fault diagnosis and reducing board area in dual-threshold safety-critical designs.
Availability
MAX6758UTWD3 is available at Aetrix Electronics and suitable for telecom DC-DC modules, industrial PLCs, and automotive body control units requiring stable component supply with extended temperature support and long-term lifecycle assurance.
Supply support for MAX6758UTWD3 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 demanding industrial, automotive, and communications applications.
The MAX6754–MAX6764 family was engineered specifically for robust, low-power supply supervision in harsh environments - delivering accurate window detection without external components or calibration.
FAQ
What is the exact undervoltage and overvoltage threshold for MAX6758UTWD3?
The MAX6758UTWD3 has a nominal 3.3V supply monitoring window with ±10% factory trimming. Its undervoltage threshold (UVTH) is 2.97V (min) to 3.63V (max) on falling VCC, and its overvoltage threshold (OVTH) is 3.63V (min) to 3.96V (max) on rising VCC - both specified over -40°C to +125°C. These values are confirmed in Table 1 (suffix 'T') and Electrical Characteristics section of the MAX6754–MAX6764 datasheet.
Does MAX6758UTWD3 require external resistors to set its detection thresholds?
No, MAX6758UTWD3 does not require external resistors. Its 3.3V nominal thresholds are factory-trimmed and fixed; the SET pin is used only to select window tolerance (±5%, ±10%, or ±15%). With SET tied to VCC (as indicated by the 'W' suffix), the device operates at ±10% - all threshold accuracy and hysteresis are internal and production-tested.
What is the function of the MR pin on MAX6758UTWD3, and how is it biased?
The MR pin on MAX6758UTWD3 is an active-low manual reset input that forces the UV output high when asserted. It is internally pulled up to VCC through a 26kΩ resistor, so an external push-button to ground is sufficient for reset initiation. The UV output remains high for the full 100ms timeout period after MR returns high, ensuring reliable processor reset sequencing.
Can MAX6758UTWD3 monitor dual supplies like VCC and VCC2?
No, MAX6758UTWD3 monitors only a single supply (VCC). It belongs to the MAX6757–MAX6759 subgroup, which supports single-voltage window detection with independent UV/OV outputs. Dual-supply monitoring (VCC + VCC2) is exclusive to the MAX6760–MAX6762 series - MAX6758UTWD3 lacks VCC2, OVLATCH, and dual-comparator circuitry.
What package type and RoHS status does MAX6758UTWD3 use?
MAX6758UTWD3 is supplied in a lead-free, RoHS-compliant 6-pin SOT23-6 package (3.0mm × 1.7mm × 1.3mm body). The '-T' suffix confirms lead-free packaging; no leaded variant is offered for this part number. Thermal performance is rated for 696mW continuous power dissipation at +70°C ambient.
MAX6758UTWD3 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:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.8V
- Output:
- Open Drain, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6758UTWD3 FAQ
1.How can I place an order for MAX6758UTWD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6758UTWD3 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 MAX6758UTWD3 reliable?
The price and inventory of MAX6758UTWD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6758UTWD3 is usually 5 days.
3.What payment methods are accepted for MAX6758UTWD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6758UTWD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6758UTWD3?
MAX6758UTWD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6758UTWD3 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 MAX6758UTWD3?
For technical support, including MAX6758UTWD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6758UTWD3 requirements.
6.How does Aetrix verify that MAX6758UTWD3 is sourced from the original manufacturer or authorized distributors?
All MAX6758UTWD3 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 MAX6758UTWD3 meets industry standards.
7.What is the process for return or replacement of MAX6758UTWD3?
All MAX6758UTWD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6758UTWD3, 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 MAX6758UTWD3 part is unused and in its original packaging.
Return procedure for MAX6758UTWD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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