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Analog Devices Inc./Maxim Integrated MAX6756UKLD3+T
- Part No.:
- MAX6756UKLD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6756UKLD3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,284
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Product details
Overview
MAX6756UKLD3+T from Analog Devices is a low-power, single-supply window voltage detector with factory-trimmed 3.3V nominal monitoring, ±10% adjustable window (SET = VCC), 100ms minimum reset timeout, active-low open-drain RESET output, and manual reset input. It monitors system power rails in telecom and server applications where precise undervoltage/overvoltage detection prevents microprocessor malfunction during supply transients.
For engineers reviewing the MAX6756UKLD3+T datasheet, MAX6756UKLD3+T pinout, MAX6756UKLD3+T application, or MAX6756UKLD3+T equivalent, key selection criteria include its 10μA supply current, -40°C to +125°C operation, SOT23-5 package, 3.3V ±10% fixed threshold, and open-drain RESET output compatible with 1.0V–6.0V VCC.
Technical Context
The MAX6756UKLD3+T implements a precision bandgap reference with internal resistor dividers to set nominal UVTH = 2.97V and OVTH = 3.63V at 25°C, with ±10% window selected via SET = VCC. Its comparator architecture includes hysteresis (0.7%) and transient immunity (300ns) to reject short-duration supply glitches.
It features a 100ms minimum timeout period (D3 suffix) for RESET deassertion after UV recovery, a 26kΩ internal MR pullup, and guaranteed output validity down to VCC = 1.0V - enabling reliable reset assertion even during brownout conditions before full rail stabilization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Supply Voltage | 3.3V - factory-trimmed for direct monitoring of standard I/O rails without external resistors. |
| Window Tolerance | ±10% - selected by connecting SET pin to VCC; provides 2.97V UVTH / 3.63V OVTH at 25°C. |
| Reset Timeout Period | 100ms min - ensures stable processor initialization after power-up or brownout recovery. |
| Supply Current | 13µA typ at 3.6V - enables always-on monitoring in battery-backed or ultra-low-power systems. |
| Operating Temperature | -40°C to +125°C - qualified for automotive under-hood and industrial embedded environments. |
| Output Type | Active-low open-drain RESET - supports wired-OR configuration and level-shifting across 1.0V–6.0V logic domains. |
| Manual Reset Input | MR with 26kΩ internal pullup - allows external push-button or system-controlled reset assertion independent of supply voltage. |
Pinout & Package
MAX6756UKLD3+T is housed in a 5-pin SOT23 package (package code U5+1, outline 21-0057), with exposed pad not present. Pin functions are validated per MAX6754–MAX6759 functional diagrams and pin description table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC | Power Input & Monitored Voltage | Supplies device and serves as the monitored rail; requires RC filter (100Ω + 0.1µF) for noise immunity during fast transients. |
| 2 - GND | Ground Reference | Common return for all internal circuitry and output drivers; must be low-impedance connection to system ground plane. |
| 3 - MR | Active-Low Manual Reset | Drives RESET low when asserted; internal 26kΩ pullup ensures default high state; 4µs minimum pulse width required. |
| 4 - RESET | Open-Drain Output | Active-low reset signal; requires external pullup; sinks 100µA at VOL ≤ 0.3V for VCC ≥ 1.0V. |
| 5 - SET | Window Threshold Select | Connect to VCC for ±10% window; biasing determines UV/OV hysteresis range without trimming resistors. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-Trimmed 3.3V Monitoring | Eliminates external resistor networks for standard I/O rail supervision, reducing BOM count and layout area. |
| 100ms Minimum Timeout (D3) | Guarantees sufficient hold time for microprocessor core initialization after power recovery, preventing premature execution. |
| 10μA Typical Supply Current | Enables continuous monitoring in energy-constrained applications such as remote sensors or backup power circuits. |
| Open-Drain RESET Output | Allows flexible interfacing with multiple logic families and supports shared reset bus architectures via wired-OR. |
| Manual Reset with Internal Pullup | Reduces external component count by integrating 26kΩ pullup resistor, simplifying push-button reset implementation. |
Applications
| Telecom Power Management | Server Board Monitoring |
|---|---|
Use Scenario: Supervising 3.3V auxiliary rails in optical line cards subject to hot-swap transients and ESD events. IC Role / Device Role / Timing Role: Window detector asserting open-drain RESET to halt FPGA configuration until rail stabilizes within ±10%. Use Value: Prevents configuration corruption by enforcing 100ms minimum reset hold time after undervoltage recovery. | Use Scenario: Monitoring 3.3V PCIe slot power in rack-mounted servers where rail collapse must trigger immediate CPU shutdown. IC Role / Device Role / Timing Role: Single-supply detector with MR input enabling both automatic and service-override reset initiation. Use Value: Combines factory-trimmed accuracy with manual reset flexibility to support field maintenance and firmware updates. |
| Data Storage Controller | Industrial DC-DC Module |
Use Scenario: Protecting SATA controller ICs from data corruption during 3.3V supply sag caused by sudden SSD load surges. IC Role / Device Role / Timing Role: Low-quiescent-current supervisor ensuring continuous monitoring without impacting thermal budget. Use Value: 13µA ICC enables always-on supervision in fanless storage enclosures with strict power envelope limits. | Use Scenario: Validating output stability of isolated 3.3V DC-DC converters in programmable logic controllers. IC Role / Device Role / Timing Role: High-temperature-rated detector (–40°C to +125°C) providing fail-safe reset under extended thermal stress. Use Value: Guaranteed operation across full industrial temperature range eliminates need for derating or thermal margining. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar window voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6756UKTD3+T | Same 3.3V nominal, ±10% window, D3 timeout, but in SOT23-6 package with separate UV/UV output instead of combined RESET. | Requires PCB redesign due to different pin count and output structure; used where independent UV assertion is needed. | Select only if dual-output functionality is required; not pin-compatible with MAX6756UKLD3+T. |
| TLV809K33DBZR | Single-channel 3.3V supervisor with 200ms reset timeout, 1.8V–6.0V VCC range, but no SET-adjustable window or manual reset input. | Lacks window adjustment and MR function; suitable only for basic reset-only applications without overvoltage detection. | Choose when overvoltage monitoring and manual reset are unnecessary; lower cost but reduced feature set. |
Compared with MAX6756UKTD3+T and TLV809K33DBZR, the MAX6756UKLD3+T uniquely delivers factory-trimmed 3.3V window supervision with ±10% adjustability, 100ms timeout, and open-drain RESET in a compact SOT23-5 - making it optimal for space-constrained, feature-complete power monitoring.
Availability
MAX6756UKLD3+T is available at Aetrix Electronics and suitable for telecom infrastructure, server board design, and industrial DC-DC converter modules requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6756UKLD3+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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX6754–MAX6764 family was designed specifically for robust, low-power system-level power supply monitoring in harsh environments - delivering precision voltage supervision with minimal external components and extended temperature operation.
FAQ
What is the exact undervoltage and overvoltage threshold for MAX6756UKLD3+T at 25°C?
The MAX6756UKLD3+T has a factory-trimmed nominal 3.3V supply with ±10% window selected by connecting SET to VCC. At 25°C, this yields UVTH = 2.97V (falling) and OVTH = 3.63V (rising). These thresholds exhibit ±0.7% hysteresis and maintain accuracy across -40°C to +125°C per datasheet specifications.
Does MAX6756UKLD3+T require external resistors to set its monitoring voltage?
No, MAX6756UKLD3+T does not require external resistors. Its 3.3V nominal threshold is factory-trimmed internally; the SET pin selects window tolerance (±5%, ±10%, ±15%) via simple connection to GND, VCC, or VCC/2 - eliminating calibration components and saving PCB area.
What is the purpose of the RC filter recommended on the VCC pin of MAX6756UKLD3+T?
The RC filter (100Ω + 0.1µF) on the VCC pin of MAX6756UKLD3+T suppresses fast transients that could falsely trigger the window detector. This ensures reliable operation during hot-swap events or switching noise, as specified in Figure 9 of the MAX6754–MAX6764 datasheet.
Can MAX6756UKLD3+T monitor voltages below 1.0V?
No, MAX6756UKLD3+T cannot monitor voltages below 1.0V. Its operating voltage range is VCC = 1.0V to 6.0V, and outputs remain valid down to VCC = 1.0V, but the internal reference and divider network are optimized for nominal supplies of 0.9V to 5V - with MAX6756 specifically calibrated for 3.3V.
Is MAX6756UKLD3+T AEC-Q100 qualified?
No, MAX6756UKLD3+T is not AEC-Q100 qualified. Only /V-suffixed variants (e.g., MAX6756UKLD3/V) in specific packages are AEC-Q100 qualified per the ordering information section of the datasheet; the +T suffix indicates commercial-grade packaging without automotive qualification.
MAX6756UKLD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 5V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6756UKLD3+T FAQ
1.How can I place an order for MAX6756UKLD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6756UKLD3+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 MAX6756UKLD3+T reliable?
The price and inventory of MAX6756UKLD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6756UKLD3+T is usually 5 days.
3.What payment methods are accepted for MAX6756UKLD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6756UKLD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6756UKLD3+T?
MAX6756UKLD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6756UKLD3+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 MAX6756UKLD3+T?
For technical support, including MAX6756UKLD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6756UKLD3+T requirements.
6.How does Aetrix verify that MAX6756UKLD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6756UKLD3+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 MAX6756UKLD3+T meets industry standards.
7.What is the process for return or replacement of MAX6756UKLD3+T?
All MAX6756UKLD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6756UKLD3+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 MAX6756UKLD3+T part is unused and in its original packaging.
Return procedure for MAX6756UKLD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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