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Analog Devices Inc./Maxim Integrated MAX6761TAZWD3+T
- Part No.:
- MAX6761TAZWD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6761TAZWD3+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,318
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Product details
Overview
MAX6761TAZWD3+T from Analog Devices is a dual-voltage window detector IC monitoring both VCC (3.3V nominal) and VCC2 (2.5V nominal) with ±15% factory-trimmed thresholds, 100ms minimum reset timeout, latched overvoltage output, manual reset input, and operation from -40°C to +125°C. It asserts independent UV/OV outputs during supply faults in telecom power systems.
For engineers reviewing the MAX6761TAZWD3+T datasheet, MAX6761TAZWD3+T pinout, MAX6761TAZWD3+T application, or MAX6761TAZWD3+T equivalent, key selection criteria include dual-supply monitoring capability, latched OV response, 100ms timeout period, ±15% window tolerance, and TDFN-8 package compatibility with automotive-grade thermal performance.
Technical Context
The MAX6761TAZWD3+T implements dual independent voltage comparators with internal reference and programmable window width via SET pin biasing. It monitors VCC (3.3V) and VCC2 (2.5V) simultaneously using separate undervoltage/overvoltage detection paths.
It features latched overvoltage output controlled by OVLATCH pin, manual reset input with 26kΩ internal pullup, and guaranteed output validity down to VCC = 1.0V. The device uses a fixed 100ms minimum timeout period (D3 suffix) and operates across -40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Nominal Voltage | 3.3V - primary monitored supply rail for core logic or I/O domain |
| VCC2 Nominal Voltage | 2.5V - secondary monitored supply rail, e.g., analog subsystem or memory interface |
| Window Tolerance | ±15% - configured by biasing SET pin to VCC/2; enables robust fault margin against ripple and drift |
| Reset Timeout Period | 100ms min - ensures stable system reset after supply recovery; eliminates chatter during brownout recovery |
| Supply Current (ICC) | 13µA typ at 3.6V - ultra-low quiescent current enables use in always-on monitoring circuits |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial embedded applications |
| Output Configuration | Separate push-pull UV and open-drain OV - supports direct MCU interrupt and fail-safe latch signaling |
Pinout & Package
MAX6761TAZWD3+T is housed in an 8-pin TDFN package (3mm × 3mm, 0.75mm height) with exposed pad (EP) internally connected to GND. Thermal resistance θJA is 41°C/W on multilayer board, supporting high-reliability operation in thermally constrained designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - MR | Active-low manual reset input | Asserts UV and resets latch; internal 26kΩ pullup to VCC enables pushbutton reset without external components |
| 2 - OVLATCH | Overvoltage latch control | High = latch OV output; low = clear latch; high-impedance input requires external pullup/pulldown for defined state |
| 3 - UV | Undervoltage output | Active-low push-pull output; drives low when VCC or VCC2 falls below respective UVTH; no timeout delay |
| 4 - OV | Overvoltage output | Active-low open-drain output; latched assertion persists until OVLATCH is driven low after OV condition clears |
| 5 - SET | Threshold window select | Bias to VCC/2 for ±15% window; determines hysteresis width for both VCC and VCC2 detectors |
| 6 - VCC2 | Secondary monitored supply | Input for second voltage monitor; powers internal circuitry only if VCC2 > VCC; supports down to 0.9V nominal |
| 7 - GND | Ground reference | Common return for all analog and digital functions; EP must be connected to GND for thermal and EMI performance |
| 8 - VCC | Primary monitored supply | Power input and primary voltage monitor rail; outputs remain valid down to 1.0V for brownout detection |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously supervises VCC (3.3V) and VCC2 (2.5V) with separate UV/OV outputs-enables fault isolation in multi-rail systems |
| Latched overvoltage output | OVLATCH pin controls persistent OV assertion, preventing missed fault events in transient-rich environments like DC-DC converter modules |
| Factory-trimmed ±15% window | SET pin biased to VCC/2 configures precise 15% hysteresis-eliminates need for external resistor dividers in fixed-rail applications |
| 100ms minimum reset timeout | D3 suffix guarantees ≥100ms reset pulse width-ensures reliable microprocessor initialization after power recovery |
| Extended temperature operation | -40°C to +125°C rating with AEC-Q100 qualification (/V parts)-supports deployment in automotive engine control units |
Applications
| Telecom Power Supervision | Automotive Engine Control Unit |
|---|---|
Use Scenario: Monitoring 3.3V I/O and 2.5V sensor interface rails in base station power management. IC Role / Device Role / Timing Role: Dual-rail window detector asserting UV/OV interrupts to FPGA supervisor logic upon rail deviation. Use Value: Latched OV output prevents loss of overvoltage event detection during brief transients common in telecom rectifier outputs. | Use Scenario: Supervising 3.3V microcontroller core and 2.5V CAN transceiver supplies in under-hood ECUs. IC Role / Device Role / Timing Role: Fault-monitoring IC triggering safe shutdown via latched OV signal when battery voltage exceeds 16.5V. Use Value: Guaranteed -40°C to +125°C operation and 100ms timeout ensure deterministic reset behavior across full automotive temperature range. |
| Data Center Server PSU | Industrial PLC Power Module |
Use Scenario: Validating 3.3V auxiliary and 2.5V memory rails in redundant server power supplies. IC Role / Device Role / Timing Role: Dual-supply monitor providing independent UV and OV status to BMC for predictive failure logging. Use Value: Separate push-pull UV and open-drain OV outputs enable direct connection to interrupt pins and fail-safe relay drivers without level-shifting. | Use Scenario: Monitoring isolated 3.3V logic and 2.5V analog front-end supplies in modular PLC backplanes. IC Role / Device Role / Timing Role: System-level voltage guard IC asserting latched OV to disable power stage when input surges exceed 28V. Use Value: Manual reset (MR) input allows field-service-initiated reinitialization without cycling main power, reducing downtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage window monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6762TAZWD3+T | Same pinout, identical electrical specs, but provides active-high UV output instead of active-low | Requires inverted logic handling in MCU firmware or external inverter for UV interrupt path | Select when system design expects high-active undervoltage signaling |
| TPS3808G33DBVR | Single-supply monitor (3.3V only), no VCC2 input, no OVLATCH, no latched OV function | Cannot supervise dual rails or retain OV state; limited to basic 3.3V reset generation | Choose only for cost-sensitive single-rail applications where latch functionality is unnecessary |
Compared with MAX6762TAZWD3+T and TPS3808G33DBVR, the MAX6761TAZWD3+T uniquely delivers latched overvoltage response and dual-rail supervision in a single TDFN-8 package-critical for safety-critical automotive and industrial systems requiring fault persistence and rail-level diagnostics.
Availability
MAX6761TAZWD3+T is available at Aetrix Electronics and suitable for telecom power supervision, automotive engine control units, data center server PSUs, and industrial PLC power modules requiring stable component supply across extended temperature ranges.
Supply support for MAX6761TAZWD3+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 precision instrumentation, industrial automation, and automotive markets.
The MAX6761TAZWD3+T belongs to the MAX6754–MAX6764 family of low-power window detectors, designed specifically for robust dual-rail voltage supervision in harsh-environment applications including automotive, telecom, and industrial control.
FAQ
What is the exact VCC and VCC2 voltage monitoring range for MAX6761TAZWD3+T?
The MAX6761TAZWD3+T is factory-configured to monitor VCC at 3.3V nominal and VCC2 at 2.5V nominal, with ±15% window tolerance (i.e., VCC UVTH ≈ 2.805V, OVTH ≈ 3.795V; VCC2 UVTH ≈ 2.125V, OVTH ≈ 2.875V). These thresholds are fixed per the "TA" (3.3V) and "Z" (2.5V) suffixes and do not require external resistors. The MAX6761TAZWD3+T maintains output validity down to VCC = 1.0V.
How does the OVLATCH pin function in MAX6761TAZWD3+T?
The OVLATCH pin on the MAX6761TAZWD3+T controls latching behavior of the OV output: driving OVLATCH high latches OV low during any overvoltage event on VCC or VCC2; driving it low clears the latch once the overvoltage condition has been removed. When connected to GND, the latch is transparent (OV deasserts immediately upon threshold exit). The MAX6761TAZWD3+T requires external pullup or pulldown for defined OVLATCH state.
What is the purpose of the SET pin on MAX6761TAZWD3+T and how should it be connected?
The SET pin on the MAX6761TAZWD3+T selects the window tolerance: connect to GND for ±5%, to VCC for ±10%, or bias to VCC/2 (e.g., via resistor divider) for ±15%. For the MAX6761TAZWD3+T, the "W" suffix indicates ±15% configuration, so SET must be biased to VCC/2. This setting applies identically to both VCC and VCC2 detection windows.
Does MAX6761TAZWD3+T support operation below 1.4V on VCC?
The MAX6761TAZWD3+T requires VCC ≥ 1.4V for accurate voltage monitoring, but its RESET and UV outputs remain asserted in the correct logic state down to VCC = 1.0V. This enables brownout detection and controlled shutdown even during deep undervoltage conditions, a critical feature confirmed in the MAX6761TAZWD3+T datasheet's Absolute Maximum Ratings and Electrical Characteristics tables.
What package type and thermal characteristics apply to MAX6761TAZWD3+T?
The MAX6761TAZWD3+T uses an 8-pin TDFN package (3mm × 3mm, 0.75mm height) with exposed pad (EP) internally tied to GND. Its thermal resistance is θJA = 41°C/W on multilayer PCBs and θJC = 8°C/W, enabling reliable operation up to +125°C ambient. The EP must be soldered to a GND plane for optimal thermal dissipation and EMI performance in the MAX6761TAZWD3+T layout.
MAX6761TAZWD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.8V, 2.5V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (3x3)
MAX6761TAZWD3+T FAQ
1.How can I place an order for MAX6761TAZWD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6761TAZWD3+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 MAX6761TAZWD3+T reliable?
The price and inventory of MAX6761TAZWD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6761TAZWD3+T is usually 5 days.
3.What payment methods are accepted for MAX6761TAZWD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6761TAZWD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6761TAZWD3+T?
MAX6761TAZWD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6761TAZWD3+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 MAX6761TAZWD3+T?
For technical support, including MAX6761TAZWD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6761TAZWD3+T requirements.
6.How does Aetrix verify that MAX6761TAZWD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6761TAZWD3+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 MAX6761TAZWD3+T meets industry standards.
7.What is the process for return or replacement of MAX6761TAZWD3+T?
All MAX6761TAZWD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6761TAZWD3+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 MAX6761TAZWD3+T part is unused and in its original packaging.
Return procedure for MAX6761TAZWD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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