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Analog Devices Inc./Maxim Integrated MAX6761TAWAD3
- Part No.:
- MAX6761TAWAD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6761TAWAD3.pdf
- Description:
- MAX6761 LOW-POWER, SINGLE/DUAL-V
- Quantity:
- Payment:
- Shipping:
Inventory:1,617
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Product details
Overview
MAX6761TAWAD3 from Maxim Integrated is a dual-voltage window detector IC that monitors both VCC (3.3V nominal) and VCC2 (1.8V nominal) for undervoltage/overvoltage conditions, with ±5% factory-trimmed thresholds, 100ms minimum reset timeout, latched overvoltage output, manual reset input, and operation from -40°C to +125°C. It serves as a system power supervisor in microprocessor-based industrial controllers.
For engineers reviewing the MAX6761TAWAD3 datasheet, MAX6761TAWAD3 pinout, MAX6761TAWAD3 application, or MAX6761TAWAD3 equivalent, key selection considerations include dual-supply monitoring capability, latched OV output behavior, TDFN-8 package footprint, 10µA supply current, and compatibility with 1.8V/3.3V rail sequencing in embedded systems.
Technical Context
The MAX6761TAWAD3 implements two independent voltage comparators-one for VCC (3.3V) and one for VCC2 (1.8V)-each with programmable ±5% window via SET pin tied to GND. Its latched OV output remains asserted until cleared by OVLATCH low, enabling fault persistence across power cycles.
It features internal reference trimming, 20µs propagation delay on UV/OV assertion, 100ms minimum reset timeout after recovery, and push-pull UV/RESET outputs with guaranteed logic state down to VCC = 1.0V. The device uses an 8-pin TDFN-EP package with exposed pad connected to GND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Nominal | 3.3V - primary monitored supply; sets internal reference for first detector |
| VCC2 Nominal | 1.8V - secondary monitored supply; enables dual-rail supervision |
| Window Tolerance | ±5% - selected by SET = GND; defines UVTH = 1.71V / OVTH = 1.89V for VCC2 |
| Reset Timeout | 100ms min - ensures stable MCU boot after supply recovery; D3 suffix |
| Supply Current | 13µA typ at 3.6V - enables always-on supervision in battery-backed systems |
| Operating Temp | -40°C to +125°C - qualified for under-hood automotive and industrial environments |
| Output Type | Push-pull UV & RESET - eliminates external pull-up resistors; reduces BOM count |
Pinout & Package
MAX6761TAWAD3 is housed in an 8-pin TDFN-EP (3mm × 3mm) package with exposed pad thermally and electrically connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Power input and primary monitored voltage (3.3V nominal) |
| 2 | GND | Ground reference for all internal circuits and outputs |
| 3 | OVLATCH | Latch control input: high = latch OV, low = clear latch, high-Z when unconnected |
| 4 | VCC2 | Secondary monitored voltage input (1.8V nominal); powers internal second detector |
| 5 | MR | Active-low manual reset input; internally pulled up to VCC (26kΩ) |
| 6 | UV | Active-low push-pull undervoltage output; asserts when VCC or VCC2 falls below UVTH |
| 7 | OV | Active-low open-drain overvoltage output; latched when OVLATCH = high |
| 8 | SET | Threshold window select: GND = ±5%, VCC = ±10%, VCC/2 = ±15% |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously supervises 3.3V and 1.8V rails without external components |
| Latched overvoltage output | Preserves OV fault state until explicitly cleared-critical for safety-critical diagnostics |
| Factory-trimmed ±5% window | Eliminates calibration effort; supports 1.8V/3.3V I/O and core rail coordination |
| 100ms reset timeout (D3) | Guarantees sufficient hold time for full microcontroller initialization sequence |
| Low 13µA supply current | Enables continuous supervision in energy-constrained edge nodes and backup domains |
Applications
| Industrial PLC Power Supervision | Automotive ADAS Domain Controller |
|---|---|
Use Scenario: Monitors 3.3V I/O and 1.8V core supplies in programmable logic controller CPU modules during cold cranking and load dump events. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting UV/RESET on either rail failure; latched OV captures transient overvoltage spikes for post-event analysis. Use Value: Prevents corrupted firmware execution by enforcing 100ms reset hold time and preserving fault history via OV latch. | Use Scenario: Supervises power rails in radar processing unit where 3.3V sensor interface and 1.8V DSP core must remain synchronized during ignition transients. IC Role / Device Role / Timing Role: Independent UV/OV detection per rail with manual reset override for safe reinitialization; operates across -40°C to +125°C junction range. Use Value: Ensures deterministic boot behavior under automotive thermal stress and EMI noise, reducing field return rates. |
| Medical Imaging Sensor Interface | Telecom Baseband Processor |
Use Scenario: Validates clean power-up of analog front-end ASICs powered by 3.3V and 1.8V LDOs before enabling high-speed ADC sampling. IC Role / Device Role / Timing Role: Window detector with push-pull UV/RESET outputs directly driving FPGA configuration enable and ADC power-enable signals. Use Value: Guarantees rail stability prior to data acquisition-eliminates startup glitches that cause image artifacts. | Use Scenario: Supervises dual-core SoC supplies in 5G small cell baseband units where 3.3V PHY and 1.8V MAC rails require coordinated reset timing. IC Role / Device Role / Timing Role: Dual-supply monitor with 100ms timeout ensuring both cores exit reset simultaneously after brownout recovery. Use Value: Prevents inter-core communication deadlock by enforcing synchronized reset deassertion across voltage domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage window detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6762TAWAD3 | Open-drain UV output instead of push-pull; identical VCC/VCC2 thresholds and timing | Requires external pull-up for UV signal; better suited for wired-OR fault bus architectures | Select when system-level fault signaling requires active-low open-drain sharing across multiple supervisors |
| TPS3808G33DBVR | Single-supply (3.3V only), no VCC2 input; 200ms timeout; different pinout and no OV latch | Lacks dual-rail capability and fault persistence; suitable only for single-rail systems | Choose only if monitoring 3.3V alone suffices and latch functionality is unnecessary |
Compared with MAX6762TAWAD3 and TPS3808G33DBVR, the MAX6761TAWAD3 uniquely delivers push-pull UV output for direct FPGA/CPU interface, integrated VCC2 monitoring for 1.8V core supervision, and hardware-latched OV for diagnostic traceability-making it optimal for dual-domain safety-aware designs.
Availability
MAX6761TAWAD3 is available at Aetrix Electronics and suitable for industrial PLCs, automotive ADAS controllers, medical imaging interfaces, and telecom baseband processors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6761TAWAD3 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 engineered specifically for robust, low-power voltage supervision in automotive, industrial, and computing systems where dual-rail coordination, latch persistence, and wide-temperature operation are mandatory.
FAQ
What is the function of the SET pin on the MAX6761TAWAD3?
The SET pin on the MAX6761TAWAD3 configures the voltage window tolerance: tied to GND for ±5%, to VCC for ±10%, or biased at VCC/2 for ±15%. For MAX6761TAWAD3, SET = GND selects the ±5% window used for its 3.3V/1.8V dual-supply monitoring, ensuring precise threshold alignment without external resistors.
Does the MAX6761TAWAD3 support latching of the undervoltage output?
No, the MAX6761TAWAD3 provides latched behavior only for the overvoltage (OV) output via the OVLATCH pin. The undervoltage (UV) and reset (RESET) outputs are nonlatching and deassert automatically after the 100ms timeout period once VCC and VCC2 return within their respective windows. This design ensures UV reflects real-time rail status while OV retains fault history.
What is the minimum operating voltage for the MAX6761TAWAD3 to maintain valid outputs?
The MAX6761TAWAD3 guarantees correct logic states on UV and RESET outputs for VCC ≥ 1.0V, even though full voltage monitoring functionality requires VCC ≥ 1.4V. Below 1.4V, the internal reference remains stable enough to assert outputs correctly during brownout, enabling fail-safe shutdown in ultra-low-voltage scenarios.
Can the MAX6761TAWAD3 monitor voltages other than 3.3V and 1.8V?
The MAX6761TAWAD3 is factory-trimmed for fixed 3.3V (VCC) and 1.8V (VCC2) thresholds per its "TA" and "W" suffixes. It does not support adjustable thresholds like the MAX6763/MAX6764. To monitor other voltages, select a different variant (e.g., MAX6761TATD3 for 3.3V/3.3V or MAX6761RAWD3 for 3.0V/1.8V) or use the externally adjustable MAX6764 with resistor dividers.
How does the OVLATCH pin affect the behavior of the OV output on the MAX6761TAWAD3?
When OVLATCH is driven high, the OV output latches low upon any VCC or VCC2 overvoltage event and remains latched until OVLATCH is driven low-preserving fault state across power cycles. When OVLATCH is grounded, the OV output becomes transparent: it asserts low only while OVTH is exceeded and releases immediately upon recovery. This dual-mode operation makes MAX6761TAWAD3 adaptable to both diagnostic logging and real-time protection needs.
MAX6761TAWAD3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.8V, Adj
- 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:
- 8-TDFN-EP (3x3)
MAX6761TAWAD3 FAQ
1.How can I place an order for MAX6761TAWAD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6761TAWAD3 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 MAX6761TAWAD3 reliable?
The price and inventory of MAX6761TAWAD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6761TAWAD3 is usually 5 days.
3.What payment methods are accepted for MAX6761TAWAD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6761TAWAD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6761TAWAD3?
MAX6761TAWAD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6761TAWAD3 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 MAX6761TAWAD3?
For technical support, including MAX6761TAWAD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6761TAWAD3 requirements.
6.How does Aetrix verify that MAX6761TAWAD3 is sourced from the original manufacturer or authorized distributors?
All MAX6761TAWAD3 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 MAX6761TAWAD3 meets industry standards.
7.What is the process for return or replacement of MAX6761TAWAD3?
All MAX6761TAWAD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6761TAWAD3, 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 MAX6761TAWAD3 part is unused and in its original packaging.
Return procedure for MAX6761TAWAD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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