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Analog Devices Inc./Maxim Integrated MAX6756UKZD3+T
- Part No.:
- MAX6756UKZD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6756UKZD3+T.pdf
- Description:
- IC DETECT VOLT WINDOW SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,926
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Product details
Overview
MAX6756UKZD3+T from Analog Devices is a low-power, single-supply window voltage detector with factory-trimmed 2.5V nominal monitoring, ±15% adjustable window (via SET pin), active-low open-drain RESET output, and 100ms minimum timeout period. It monitors system power rails in telecom and server applications where precise undervoltage/overvoltage detection with latch-free reset recovery is required.
For engineers reviewing the MAX6756UKZD3+T datasheet, MAX6756UKZD3+T pinout, MAX6756UKZD3+T application, or MAX6756UKZD3+T equivalent, key selection criteria include its 2.5V fixed threshold, ±15% window selectability, 100ms reset timeout, -40°C to +125°C operation, and SOT23-5 open-drain output configuration.
Technical Context
The MAX6756UKZD3+T implements a precision bandgap reference and comparator-based window detection architecture. It uses internal resistor dividers to set nominal UVTH = 2.25V and OVTH = 2.75V at 25°C, with ±15% window selected by biasing the SET pin to VCC/2.
It features a 100ms minimum reset timeout (D3 suffix), manual reset input (MR) with 26kΩ internal pullup, and operates down to VCC = 1.0V while maintaining valid output states - critical for brownout resilience in industrial embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Monitoring Voltage | 2.5V - factory-trimmed for direct use on 2.5V system rails without external components |
| Window Tolerance Option | ±15% - selected via SET pin biased to VCC/2; enables 2.125V UVTH / 2.875V OVTH at 25°C |
| Reset Timeout Period | 100ms min - ensures stable microprocessor reset after supply recovery; D3 suffix confirms this timing option |
| Supply Current | 13µA typ at 3.6V - ultra-low quiescent current enables battery-backed or always-on monitoring |
| Operating Temperature | -40°C to +125°C - qualified for automotive under-hood and industrial control environments |
| Output Type | Active-low open-drain RESET - allows wired-OR configuration and level-shifting with external pullup |
| UV/OV Propagation Delay | 20µs typ - fast response to supply faults without false triggering from transients |
Pinout & Package
MAX6756UKZD3+T is housed in a 5-pin SOT23 package (package code U5+1), with exposed pad not present. Pin functions are validated per Maxim Integrated datasheet Rev 12 (2022).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC | Power Input & Monitored Supply | Primary power rail input; also the voltage being monitored; requires RC filter (100Ω + 0.1µF) per datasheet Figure 9 |
| 2 - GND | Ground Reference | Analog and digital ground return; must be low-impedance path for accurate threshold referencing |
| 3 - MR | Manual Reset Input | Active-low signal; internally pulled up to VCC via 26kΩ; asserts RESET for ≥4µs pulse width |
| 4 - RESET | Open-Drain Output | Active-low reset signal; sinks 100µA at VOL ≤ 0.3V; requires external pullup for logic-level compatibility |
| 5 - SET | Window Threshold Select | Bias to VCC/2 for ±15% window; connects to internal resistor divider network to scale UV/OV thresholds |
Key Features
| Feature | Design Value |
|---|---|
| Factory-Trimmed 2.5V Threshold | Eliminates need for external resistive dividers when monitoring standard 2.5V supplies |
| Adjustable ±15% Window | Enables tolerance tuning for aging, drift, or margin testing without changing BOM |
| 100ms Minimum Reset Timeout | Guarantees sufficient hold time for microcontrollers to complete power-up initialization sequences |
| 10µA Ultra-Low ICC | Reduces standby power in always-on monitoring circuits; extends battery life in backup systems |
| VCC Operation Down to 1.0V | Maintains correct RESET state during deep brownout, enabling graceful shutdown before VCC collapse |
Applications
| Telecom Power Supervision | Industrial Server Management |
|---|---|
Use Scenario: Monitoring 2.5V auxiliary rails in 5G base station RF modules subject to thermal stress and load transients. IC Role / Device Role / Timing Role: Window detector asserting open-drain RESET to halt FPGA configuration until rail stabilizes within ±15%. Use Value: Prevents configuration corruption during voltage sags; 100ms timeout ensures full regulator settling before release. | Use Scenario: Supervising 2.5V core logic supply in rack-mounted server management controllers. IC Role / Device Role / Timing Role: Single-point fault monitor with manual reset override for field service diagnostics. Use Value: Enables deterministic recovery from undervoltage events without requiring host CPU intervention. |
| Automotive Body Control Module | DC-DC Converter Module Protection |
Use Scenario: Validating 2.5V sensor interface rail in under-hood BCMs operating across -40°C to +125°C. IC Role / Device Role / Timing Role: AEC-Q100-compliant voltage supervisor ensuring MCU reset integrity during cold cranking. Use Value: Guaranteed operation over full automotive temperature range eliminates need for derating or external compensation. | Use Scenario: Detecting overvoltage faults on isolated 2.5V output of wide-input DC-DC converters in PoE equipment. IC Role / Device Role / Timing Role: Fast-response (20µs) window detector triggering converter shutdown via open-drain RESET line. Use Value: Limits fault energy exposure by reacting before downstream ICs sustain damage from overvoltage stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar window voltage detection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6756UKZD0+T | Same 2.5V/±15% window, but 20µs propagation delay (no timeout); RESET asserts/deasserts immediately on threshold crossing | Suitable for real-time fault flagging without reset hold time; not for microprocessor reset sequencing | Select only if immediate assertion is required and no reset timeout is needed |
| TLV809E25DBZR | Fixed 2.5V undervoltage detector only (no overvoltage detection); no window function; 350ms reset timeout | Provides UV-only supervision; lacks OV monitoring and window adjustability; larger timeout reduces responsiveness | Use only when overvoltage detection is unnecessary and longer reset hold is acceptable |
Compared with MAX6756UKZD0+T and TLV809E25DBZR, the MAX6756UKZD3+T uniquely delivers combined UV/OV window detection with user-selectable ±15% tolerance and a guaranteed 100ms reset timeout - essential for robust microcontroller power sequencing in harsh environments.
Availability
MAX6756UKZD3+T is available at Aetrix Electronics and suitable for telecom infrastructure, industrial server management, and automotive body control modules requiring stable component supply with extended temperature support and long-term lifecycle assurance.
Supply support for MAX6756UKZD3+T 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 (acquired Maxim Integrated in 2021) designs high-performance analog, mixed-signal, and power management ICs for precision sensing and reliable system supervision.
The MAX6754–MAX6764 family was engineered specifically for low-power, high-accuracy window voltage monitoring in space-constrained, thermally demanding applications - emphasizing factory-trimmed thresholds, selectable windows, and extended temperature operation.
FAQ
What is the exact undervoltage and overvoltage threshold for MAX6756UKZD3+T at 25°C?
The MAX6756UKZD3+T has a factory-trimmed nominal monitoring voltage of 2.5V. With SET biased to VCC/2 for ±15% window, its undervoltage threshold (UVTH) is 2.125V and overvoltage threshold (OVTH) is 2.875V at 25°C, as specified in Table 1 and Electrical Characteristics section of the MAX6754–MAX6764 datasheet. These values are guaranteed over -40°C to +125°C with ±0.7% hysteresis.
Does MAX6756UKZD3+T require external components for basic operation?
Yes - the MAX6756UKZD3+T requires an external RC filter on VCC (100Ω series resistor + 0.1µF bypass capacitor to GND) per datasheet Figure 9 to ensure proper operation during extreme voltage transitions. Additionally, an external pullup resistor is mandatory on the open-drain RESET pin to establish a defined logic-high level when deasserted.
Can MAX6756UKZD3+T monitor voltages other than 2.5V?
No - the MAX6756UKZD3+T is a factory-trimmed device with fixed 2.5V nominal monitoring. It cannot monitor arbitrary voltages. For adjustable thresholds, consider MAX6763/MAX6764 or MAX6760–MAX6762 variants. The Z suffix in MAX6756UKZD3+T explicitly denotes the 2.5V version per Table 1 of the datasheet.
What does the 'D3' suffix mean in MAX6756UKZD3+T?
The 'D3' suffix in MAX6756UKZD3+T indicates the 100ms minimum reset timeout period option. This defines the minimum duration RESET remains asserted after VCC recovers above UVTH. It contrasts with the 'D0' option (20µs propagation delay, no timeout), confirming the part's suitability for microprocessor reset sequencing requiring guaranteed hold time.
Is MAX6756UKZD3+T qualified for automotive applications?
The MAX6756UKZD3+T itself is not AEC-Q100 qualified; only /V-suffixed parts in the MAX6754–MAX6764 family (e.g., MAX6756UKZD3+T/V) carry AEC-Q100 qualification. However, its -40°C to +125°C operating range and robust transient immunity make it suitable for non-automotive industrial and telecom applications requiring extended temperature performance.
MAX6756UKZD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX6756UKZD3+T FAQ
1.How can I place an order for MAX6756UKZD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6756UKZD3+T 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 MAX6756UKZD3+T reliable?
The price and inventory of MAX6756UKZD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6756UKZD3+T is usually 5 days.
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Once your MAX6756UKZD3+T 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 MAX6756UKZD3+T?
For technical support, including MAX6756UKZD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6756UKZD3+T requirements.
6.How does Aetrix verify that MAX6756UKZD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6756UKZD3+T 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 MAX6756UKZD3+T meets industry standards.
7.What is the process for return or replacement of MAX6756UKZD3+T?
All MAX6756UKZD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6756UKZD3+T, 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 MAX6756UKZD3+T part is unused and in its original packaging.
Return procedure for MAX6756UKZD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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