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Analog Devices Inc./Maxim Integrated MAX6757UTLD3+
- Part No.:
- MAX6757UTLD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6757UTLD3+.pdf
- Description:
- IC DETECT VOLT WINDOW SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,282
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Product details
Overview
MAX6757UTLD3+ from Analog Devices is a low-power, single-supply window voltage detector with independent undervoltage (UV) and overvoltage (OV) open-drain outputs, factory-trimmed 3.3V nominal threshold, ±10% window (2.97V UV / 3.63V OV), 100ms minimum reset timeout, and manual reset input. It monitors microprocessor power rails in telecom and industrial systems where supply integrity must trigger system-level fault response.
For engineers reviewing the MAX6757UTLD3+ datasheet, MAX6757UTLD3+ pinout, MAX6757UTLD3+ application, or MAX6757UTLD3+ equivalent, this device delivers precise dual-threshold detection with latch-free OV assertion, sub-30µA quiescent current, and operation down to 1V VCC - critical for brownout resilience in embedded power management.
Technical Context
The MAX6757UTLD3+ implements a fixed-ratio internal voltage divider to set its 3.3V nominal monitoring point, with SET pin selection of ±5%/±10%/±15% hysteresis windows. Its UV and OV comparators operate independently, each asserting immediately upon threshold breach without propagation delay.
It features a 26kΩ internal MR pullup, supports 4.75–5.5V VCC operation per specification, and guarantees output validity down to VCC = 1.0V. The 100ms timeout period (D3 suffix) applies only to UV/RESET deassertion after recovery; OV asserts/deasserts instantaneously with no timeout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal VCC Threshold | 3.3V - factory-trimmed reference for monitoring 3.3V system rails with ±10% window |
| Undervoltage Threshold | 2.97V (min) - triggers UV output when VCC falls below this level |
| Overvoltage Threshold | 3.63V (max) - triggers OV output when VCC exceeds this level |
| Reset Timeout Period | 100ms (min) - UV/RESET remains asserted for ≥100ms after VCC recovers above UVTH |
| Supply Current | 13µA (typ) at 3.6V - enables battery-backed or ultra-low-power monitoring |
| Operating Temperature | -40°C to +125°C - qualified for automotive under-hood and industrial control environments |
| Output Type | Open-drain UV and OV - allows wired-OR logic and flexible pullup voltage selection |
Pinout & Package
MAX6757UTLD3+ is packaged in a 6-pin SOT23-6 (U6+1) with exposed pad not connected. Pin 1 is VCC, Pin 2 is GND, Pin 3 is MR, Pin 4 is UV, Pin 5 is OV, Pin 6 is SET.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Power Input & Monitored Supply | Supplies device and serves as the voltage being monitored; valid operation requires VCC ≥ 1.0V |
| GND (Pin 2) | Reference Ground | Common return path for all internal circuitry and comparator references |
| MR (Pin 3) | Active-Low Manual Reset | Drives UV output low when asserted; internally pulled up to VCC via 26kΩ resistor |
| UV (Pin 4) | Undervoltage Output | Open-drain output active low when VCC < UVTH or MR is low; deasserts after 100ms timeout |
| OV (Pin 5) | Overvoltage Output | Open-drain output active low when VCC > OVTH; no timeout - immediate deassertion on recovery |
| SET (Pin 6) | Window Select Input | Configures hysteresis: tied to VCC for ±10% window (as in UTLD3+) |
Key Features
| Feature | Design Value |
|---|---|
| Independent UV/OV Outputs | Enables separate fault signaling paths for undervoltage and overvoltage events without logic ORing |
| Factory-Trimmed 3.3V Threshold | Eliminates external resistor networks and calibration for standard 3.3V rail monitoring |
| 100ms Minimum Timeout (D3) | Prevents premature system restart during slow power-up or transient dips |
| 1V Minimum VCC Operation | Ensures correct UV/OV state reporting even during deep brownout conditions |
| ±10% Window Selection (T suffix) | Provides optimal hysteresis for 3.3V supplies with typical tolerance budgets |
Applications
| Telecom Power Supervision | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitoring 3.3V auxiliary power in 48V-powered telecom line cards subject to load transients and hot-swap events. IC Role / Device Role / Timing Role: Voltage window detector providing independent UV and OV fault flags to FPGA-based supervisor logic. Use Value: Prevents firmware corruption by holding system reset until stable 3.3V rail is confirmed for ≥100ms post-recovery. | Use Scenario: Supervising isolated 3.3V digital I/O supply in DIN-rail mounted programmable logic controllers operating in harsh EMI environments. IC Role / Device Role / Timing Role: Fault detector with immediate OV response and delayed UV release, interfacing directly to optocoupled interrupt inputs. Use Value: Enables deterministic fault logging - OV trips instantly on surge, while UV avoids nuisance resets during brief dips. |
| Automotive Body Control Unit | Server Management Controller |
Use Scenario: Monitoring 3.3V MCU core supply in body control modules exposed to cold-crank and load-dump conditions. IC Role / Device Role / Timing Role: Single-chip window monitor with manual reset for fail-safe MCU reset coordination. Use Value: Guarantees functional safety compliance by maintaining valid UV/OV states down to 1.0V VCC during battery sag. | Use Scenario: Supervising 3.3V platform controller hub (PCH) supply in rack-mounted servers requiring coordinated power sequencing. IC Role / Device Role / Timing Role: Independent UV and OV flag generator feeding baseboard management controller (BMC) GPIOs. Use Value: Allows BMC to distinguish between brownout (UV timeout active) and overvoltage (instant OV assert) for targeted diagnostics and logging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar window voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6757UTZD3+ | Factory-trimmed 2.5V nominal threshold (±10%), same 100ms timeout and SOT23-6 package | Targets 2.5V rails instead of 3.3V; identical timing and interface behavior | Select when monitoring 2.5V logic or analog supply instead of 3.3V |
| TLV809E33DBZR | Single-output (reset only), 3.3V threshold, 200ms timeout, SOT23-3 package, no SET or independent OV | Lacks independent OV output and window adjustment; simpler but less diagnostic capability | Choose for cost-sensitive designs needing only basic reset-on-undervoltage |
Compared with MAX6757UTZD3+, the MAX6757UTLD3+ provides higher nominal threshold for 3.3V systems; compared with TLV809E33DBZR, it adds independent OV detection and configurable hysteresis - essential for comprehensive power fault analysis.
Availability
MAX6757UTLD3+ is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and automotive electronics requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MAX6757UTLD3+ 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial, automotive, and communications markets.
The MAX6757UTLD3+ belongs to the MAX6754–MAX6764 family of low-power window detectors designed specifically for robust, single-chip power supply supervision in space-constrained and thermally demanding applications.
FAQ
What is the exact undervoltage and overvoltage threshold range for MAX6757UTLD3+?
The MAX6757UTLD3+ has a factory-trimmed nominal VCC threshold of 3.3V with ±10% window selected by the T suffix and SET = VCC. This yields an undervoltage threshold of 2.97V (min) and overvoltage threshold of 3.63V (max), specified over -40°C to +125°C. These values are guaranteed in the Electrical Characteristics table under UVTH and OVTH conditions for T, 3.3V configuration.
Does MAX6757UTLD3+ support operation below 3.3V VCC?
Yes, MAX6757UTLD3+ operates with VCC as low as 1.0V while maintaining correct UV/OV output logic states. However, voltage monitoring functionality (i.e., accurate threshold comparison) requires VCC ≥ 1.4V per datasheet Note 2. Below 1.4V, outputs remain latched in their last valid state, enabling brownout-safe reset hold.
How does the 100ms timeout period apply to MAX6757UTLD3+ outputs?
The 100ms minimum timeout (D3 suffix) applies only to the UV output deassertion after VCC rises above the undervoltage threshold. The OV output has no timeout - it asserts and deasserts instantaneously with VCC crossing OVTH. This asymmetry allows immediate overvoltage shutdown while preventing premature recovery from brief undervoltage dips.
What is the function of the SET pin on MAX6757UTLD3+?
The SET pin on MAX6757UTLD3+ selects the window hysteresis: connected to GND for ±5%, to VCC for ±10% (as implemented in the UTLD3+ variant), or biased to VCC/2 for ±15%. It configures the internal comparator reference scaling and directly determines the UVTH and OVTH spread around the 3.3V nominal point.
Can MAX6757UTLD3+ be used in automotive applications?
Yes, MAX6757UTLD3+ is specified for -40°C to +125°C operation and meets AEC-Q100 stress testing requirements for /V-grade parts. While MAX6757UTLD3+ itself carries no /V suffix, its electrical specifications, thermal performance, and SOT23-6 package construction align with automotive body electronics and infotainment power supervision needs when used within validated design margins.
MAX6757UTLD3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 5V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6757UTLD3+ FAQ
1.How can I place an order for MAX6757UTLD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6757UTLD3+ 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 MAX6757UTLD3+ reliable?
The price and inventory of MAX6757UTLD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6757UTLD3+ is usually 5 days.
3.What payment methods are accepted for MAX6757UTLD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6757UTLD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6757UTLD3+?
MAX6757UTLD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6757UTLD3+ 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 MAX6757UTLD3+?
For technical support, including MAX6757UTLD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6757UTLD3+ requirements.
6.How does Aetrix verify that MAX6757UTLD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6757UTLD3+ 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 MAX6757UTLD3+ meets industry standards.
7.What is the process for return or replacement of MAX6757UTLD3+?
All MAX6757UTLD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6757UTLD3+, 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 MAX6757UTLD3+ part is unused and in its original packaging.
Return procedure for MAX6757UTLD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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