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Analog Devices Inc./Maxim Integrated MAX6756UKWD0
- Part No.:
- MAX6756UKWD0
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6756UKWD0.pdf
- Description:
- IC SUPERVISOR SGL VOLT WINDOW
- Quantity:
- Payment:
- Shipping:
Inventory:1,166
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Product details
Overview
The MAX6756UKWD0 from Maxim Integrated is a low-power, single-voltage window detector IC that monitors system supply voltage (VCC) for undervoltage and overvoltage conditions, asserting an active-low open-drain RESET output when thresholds are violated. It features factory-trimmed 3.3V nominal monitoring (T-suffix), ±10% window (W-suffix), and 20µs typical reset timeout (D0-suffix), operating from 1.0V to 6.0V supply across –40°C to +125°C. It is used in microprocessor power supervision for telecom and industrial embedded systems.
For engineers reviewing the MAX6756UKWD0 datasheet, MAX6756UKWD0 pinout, MAX6756UKWD0 application, or MAX6756UKWD0 equivalent, key selection criteria include its open-drain RESET output, ±10% threshold window, 20µs propagation delay, manual reset input (MR), and SOT23-5 package compatibility with space-constrained power-rail monitoring designs.
Technical Context
The MAX6756UKWD0 implements a precision internal reference-based comparator architecture to detect VCC deviations relative to fixed UVTH and OVTH thresholds. Its SET pin selects ±5%, ±10%, or ±15% window hysteresis by connecting to GND, VCC, or VCC/2 respectively.
It integrates a manual reset input (MR) with 26kΩ internal pullup and 4µs minimum pulse width support, and guarantees correct output logic state down to VCC = 1.0V - enabling reliable supervision even during brownout recovery. No latched OV function or dual-supply monitoring is present, distinguishing it from MAX6760–MAX6762 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.0V to 6.0V - supports operation during deep brownout while maintaining valid outputs |
| UV/OV Threshold Accuracy | ±1.5% over temperature - ensures precise 3.3V system rail monitoring without external calibration |
| Window Hysteresis | ±10% (SET = VCC) - configurable detection margin prevents chatter near trip points |
| Reset Timeout Period | 20µs typical - fast response for real-time microcontroller reset assertion |
| Quiescent Current | 13µA typical at 3.6V - enables always-on supervision in battery-backed systems |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial environments |
| Output Type | Active-low open-drain RESET - allows wired-OR configuration and level-shifting flexibility |
Pinout & Package
MAX6756UKWD0 is housed in a 5-pin SOT23-5 package with exposed pad (not internally connected). Pin 1 is VCC, Pin 2 is GND, Pin 3 is MR, Pin 4 is RESET, and Pin 5 is SET - all pins are surface-mount compatible and rated for ±0.3V to (VCC + 0.3V) input voltage range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Power input & monitored supply | Supplies internal circuitry and serves as the voltage being supervised; outputs remain valid down to 1.0V |
| GND (Pin 2) | Reference ground | Common return path for all internal comparators and bias networks |
| MR (Pin 3) | Active-low manual reset | Asserts RESET output immediately; internally pulled up to VCC via 26kΩ resistor |
| RESET (Pin 4) | Open-drain undervoltage/overvoltage output | Drives low when VCC < UVTH or VCC > OVTH; requires external pullup for logic-level interface |
| SET (Pin 5) | Window threshold select | Configures ±5%/±10%/±15% hysteresis: GND = ±5%, VCC = ±10%, VCC/2 = ±15% |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 3.3V monitoring | Eliminates need for external resistive dividers in standard 3.3V rail supervision |
| 20µs fast propagation delay | Enables immediate microcontroller reset assertion without timing-critical PCB delays |
| 10µA typical supply current | Reduces standby power in always-on systems such as smart meters and IoT edge nodes |
| Immunity to short transients | Rejects ≤300ns glitches on VCC or MR, preventing false resets in noisy power environments |
| Valid outputs at VCC ≥ 1.0V | Ensures deterministic reset behavior during power-up and brownout recovery sequences |
Applications
| Telecom Power Supervision | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitoring 3.3V auxiliary supply in optical line terminal (OLT) chassis where voltage stability is critical for SERDES link integrity. IC Role / Device Role / Timing Role: Single-point window detector asserting open-drain RESET to halt FPGA configuration until rail is stable. Use Value: Prevents metastability and configuration corruption by enforcing 20µs minimum reset hold time after VCC enters ±10% window. | Use Scenario: Supervising 3.3V logic supply powering isolated digital I/O drivers in programmable logic controller backplane modules. IC Role / Device Role / Timing Role: Fault-detection element triggering watchdog timeout if supply drifts beyond ±10% of nominal due to aging DC-DC converter components. Use Value: Enables field-replaceable module diagnostics via MR pin test without requiring firmware intervention. |
| Automotive Body Control Unit | Medical Infusion Pump Controller |
Use Scenario: Validating 3.3V microcontroller core supply in body control module operating across –40°C to +125°C ambient. IC Role / Device Role / Timing Role: High-temperature-stable voltage monitor providing fail-safe RESET signal to MCU during cold cranking events. Use Value: Guarantees correct logic state at VCC ≥ 1.0V, ensuring deterministic reset even during 6V battery sag conditions. | Use Scenario: Supervising 3.3V supply feeding safety-critical ARM Cortex-M4 in infusion pump mainboard with ISO 13485 compliance requirements. IC Role / Device Role / Timing Role: Independent hardware fault detector asserting RESET to halt motor control if supply exceeds OVTH during ESD event. Use Value: Meets IEC 62304 Class C software safety requirements by providing analog-level power-fail detection outside MCU domain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6755UKWD0 | Active-high push-pull RESET output instead of open-drain; identical thresholds, timing, and pinout | Requires no external pullup; incompatible with wired-OR reset buses or level-shifted hosts | Select when interfacing directly to MCU reset inputs expecting active-high assertion without external components |
| TLV809K33DBZR | Single undervoltage detector only (no overvoltage); 3.3V threshold, SOT23-3, no MR or SET pin | Lacks OV detection, manual reset, and window hysteresis adjustment - limited to basic brownout protection | Select only for cost-sensitive, space-constrained designs needing only UV detection with minimal feature set |
Compared with MAX6756UKWD0, MAX6755UKWD0 offers simplified interface but sacrifices bus-sharing capability, while TLV809K33DBZR reduces functionality and design flexibility despite lower unit cost.
Availability
MAX6756UKWD0 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and automotive body electronics requiring stable component supply with guaranteed long-term availability and extended temperature support.
Supply support for MAX6756UKWD0 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 in demanding environments.
The MAX6754–MAX6764 family was developed specifically for high-reliability power-supply monitoring in space-constrained, wide-temperature industrial and automotive systems - emphasizing low quiescent current, factory-trimmed accuracy, and robust transient immunity.
FAQ
What is the exact undervoltage and overvoltage threshold for MAX6756UKWD0?
The MAX6756UKWD0 has a nominal 3.3V monitoring point (T-suffix) with ±10% window (W-suffix), resulting in a guaranteed undervoltage threshold (UVTH) of 2.970V to 3.135V and overvoltage threshold (OVTH) of 3.465V to 3.630V over –40°C to +125°C. These values are factory-trimmed and specified in the Electrical Characteristics table under "T, 3.3V" row with SET = VCC.
Does MAX6756UKWD0 support dual-voltage monitoring?
No, MAX6756UKWD0 is a single-voltage window detector monitoring only VCC. It lacks VCC2 input and dual-supply functionality found in MAX6760–MAX6762 variants. Its pinout (SOT23-5) and functional diagram confirm exclusive VCC supervision with combined UV/OV output behavior.
Can the RESET output of MAX6756UKWD0 drive a microcontroller reset pin directly?
Yes, but only with an external pullup resistor. The MAX6756UKWD0 RESET pin is open-drain, so a pullup (typically 10kΩ to VCC or host logic rail) is required to generate a valid high-level signal. When asserted, it pulls low to <0.3V at 100µA sink current, meeting most MCU reset input low-voltage requirements.
What is the purpose of the SET pin on MAX6756UKWD0?
The SET pin on MAX6756UKWD0 configures the window hysteresis: connecting it to GND selects ±5%, to VCC selects ±10%, and biasing to VCC/2 selects ±15%. For MAX6756UKWD0 (W-suffix), SET must be tied to VCC to achieve the specified ±10% window; incorrect connection invalidates threshold accuracy.
Is MAX6756UKWD0 qualified for automotive applications?
MAX6756UKWD0 is specified for –40°C to +125°C operation and meets AEC-Q100 stress test requirements for temperature range, but it is not officially AEC-Q100 qualified unless ordered with /V suffix (e.g., MAX6756UKWD0/V). Standard MAX6756UKWD0 is suitable for industrial and commercial automotive-adjacent systems but requires qualification testing for safety-critical vehicle subsystems.
MAX6756UKWD0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.8V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 20µs Typical
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6756UKWD0 FAQ
1.How can I place an order for MAX6756UKWD0 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6756UKWD0 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 MAX6756UKWD0 reliable?
The price and inventory of MAX6756UKWD0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6756UKWD0 is usually 5 days.
3.What payment methods are accepted for MAX6756UKWD0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6756UKWD0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6756UKWD0?
MAX6756UKWD0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6756UKWD0 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 MAX6756UKWD0?
For technical support, including MAX6756UKWD0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6756UKWD0 requirements.
6.How does Aetrix verify that MAX6756UKWD0 is sourced from the original manufacturer or authorized distributors?
All MAX6756UKWD0 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 MAX6756UKWD0 meets industry standards.
7.What is the process for return or replacement of MAX6756UKWD0?
All MAX6756UKWD0 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6756UKWD0, 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 MAX6756UKWD0 part is unused and in its original packaging.
Return procedure for MAX6756UKWD0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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