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Analog Devices Inc./Maxim Integrated MAX6761TATAD0
- Part No.:
- MAX6761TATAD0
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6761TATAD0.pdf
- Description:
- MAX6761 LOW-POWER, SINGLE/DUAL-V
- Quantity:
- Payment:
- Shipping:
Inventory:1,525
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Product details
Overview
MAX6761TATAD0 from Maxim Integrated is a dual-voltage window detector IC that monitors both VCC (3.3V nominal) and VCC2 (adjustable down to 0.5V) for undervoltage/overvoltage conditions, features ±10% factory-set window tolerance, 100ms minimum reset timeout, latched overvoltage output, manual reset input, and operates from -40°C to +125°C in TDFN-8 package - used in automotive power rail supervision and industrial DC-DC converter monitoring.
For engineers reviewing the MAX6761TATAD0 datasheet, MAX6761TATAD0 pinout, MAX6761TATAD0 application, or MAX6761TATAD0 equivalent, this page delivers verified electrical specifications, dual-supply threshold behavior, latched OV functionality, thermal stability data, and real-world design considerations for high-reliability embedded power monitoring.
Technical Context
The MAX6761TATAD0 implements two independent voltage comparators with internal reference and programmable hysteresis (0.7%), where VCC is monitored at 3.3V nominal and VCC2 is externally adjustable via resistor divider to set 0.4255V at the input. The SET pin configures ±10% window tolerance by connecting to VCC.
It integrates a latched overvoltage output (OVLATCH-controlled), active-low manual reset (MR) with 26kΩ internal pullup, and separate push-pull UV and open-drain OV outputs - all asserted when either supply violates its threshold, with RESET deasserting after 100ms minimum timeout upon recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Nominal Threshold | 3.3V (factory-trimmed, TA suffix), ±10% window (SET = VCC) |
| VCC2 Monitoring Range | Adjustable down to 0.5V using external resistor divider (0.4255V reference point) |
| Reset Timeout Period | 100ms minimum (D3 suffix), ensures stable microprocessor restart after brownout recovery |
| Supply Current (ICC) | 13µA typical at VCC = 3.6V, enabling ultra-low-power system supervision |
| Operating Temperature | -40°C to +125°C, qualified for under-hood automotive and industrial environments |
| Output Types | UV: push-pull; OV: open-drain; OVLATCH: high-impedance control input for latch enable/clear |
| Threshold Hysteresis | 0.7%, prevents chatter during slow-ramping or noisy supply transitions |
Pinout & Package
MAX6761TATAD0 is housed in an 8-pin TDFN package (3mm × 3mm, 0.5mm pitch) with exposed pad (EP) internally connected to GND. Pin 1 is marked with dot; EP must be soldered to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Power input and primary monitored supply (3.3V nominal); powers internal circuitry |
| 2 | GND | Ground reference for all analog and digital functions; connects to EP |
| 3 | OVLATCH | High-impedance control input: high = latch OV output, low = clear latch, GND = transparent mode |
| 4 | VCC2 | Secondary monitored supply input; supports externally adjustable thresholds down to 0.5V |
| 5 | MR | Active-low manual reset input; internally pulled up to VCC (26kΩ); asserts UV/RESET on low pulse ≥4µs |
| 6 | UV | Push-pull undervoltage output; active-low, asserts when VCC < UVTH or VCC2 < UVTH2 |
| 7 | OV | Open-drain overvoltage output; active-low, latched when OVLATCH = high, no timeout |
| 8 | SET | Window tolerance select: tied to VCC for ±10% window (TA suffix configuration) |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously supervises VCC (3.3V) and VCC2 (adjustable), enabling core/I/O rail coordination in SoC systems |
| Latched overvoltage output | OVLATCH pin enables persistent fault indication until cleared - critical for safety-critical power sequencing |
| Factory-trimmed ±10% window | Eliminates external resistor calibration for 3.3V rail; reduces BOM count and layout complexity |
| 100ms minimum reset timeout | Guarantees sufficient hold time for microprocessor initialization after power recovery |
| Low 13µA supply current | Enables always-on supervision in battery-backed or energy-constrained applications without significant drain |
| Extended temperature operation | Valid performance across -40°C to +125°C supports automotive engine control and industrial motor drives |
Applications
| Automotive Power Rail Supervision | Industrial DC-DC Converter Monitoring |
|---|---|
Use Scenario: Monitoring 3.3V microcontroller I/O supply and adjustable 1.2V core rail in engine control unit (ECU) under wide temperature and load transients. IC Role / Device Role / Timing Role: Dual-voltage window detector providing independent UV/OV assertion with latched OV for fault logging and MR-triggered system reset. Use Value: Prevents ECU lockup during cold cranking or alternator ripple by asserting reset before logic corruption occurs, with latch retention for diagnostic traceability. |
Use Scenario: Supervising output rails of isolated DC-DC converters in programmable logic controller (PLC) backplane, where VCC2 is adjusted to match custom 2.5V FPGA core voltage. IC Role / Device Role / Timing Role: Adjustable dual-threshold supervisor ensuring both 3.3V interface and 2.5V logic supplies remain within ±10% window during transient load steps. Use Value: Enables single-chip dual-rail monitoring without trimming resistors, reducing footprint and improving long-term stability vs. discrete comparator solutions. |
| Telecom Line Card Voltage Integrity | Medical Imaging Power Sequencing |
Use Scenario: Validating redundant 5V and 3.3V bias supplies on telecom line cards exposed to lightning-induced surges and ESD events. IC Role / Device Role / Timing Role: Window detector with transient-immune inputs (300ns immunity) and latched OV output to trigger protection circuitry before damage occurs. Use Value: Provides deterministic overvoltage response within 20µs, eliminating false trips from µs-scale transients while capturing sustained overvoltage faults. |
Use Scenario: Coordinating power-up sequence of 1.8V sensor interface and 3.3V ADC supply in portable MRI subsystem, requiring precise timing and fault isolation. IC Role / Device Role / Timing Role: Dual-supply supervisor with manual reset and independent UV/OV outputs enabling staged power enable and fault-dependent shutdown. Use Value: Ensures ADC does not sample before sensor bias stabilizes, preventing corrupted image data; latched OV allows post-fault analysis without continuous polling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage window detection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6762TATAD3 | Same pinout and function, but UV output is open-drain (vs. push-pull on MAX6761TATAD0) | Requires external pullup for UV signal; better suited for wired-OR fault bus architectures | Select when system-level fault signaling requires open-drain compatibility with shared interrupt lines |
| TLV809E33DBVR | Single-channel 3.3V supervisor only; no VCC2 monitoring, no OVLATCH, no adjustable thresholds | Limited to basic 3.3V rail monitoring; lacks dual-supply coordination and latch capability | Choose only for cost-sensitive, single-rail applications where dual monitoring and fault retention are unnecessary |
Compared with MAX6762TATAD3, MAX6761TATAD0 provides push-pull UV for direct MCU interface without pullup, simplifying board layout; versus TLV809E33DBVR, it adds full dual-rail supervision, latch control, and adjustable secondary threshold - essential for complex power architecture validation.
Availability
MAX6761TATAD0 is available at Aetrix Electronics and suitable for automotive power management, industrial PLCs, and telecom infrastructure requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6761TATAD0 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 demanding industrial, automotive, and communications applications.
The MAX6761TATAD0 belongs to the MAX6754–MAX6764 family of low-power window detectors engineered specifically for robust dual-rail power supply supervision in harsh environments with minimal external components.
FAQ
What is the exact VCC2 threshold configuration for MAX6761TATAD0?
The MAX6761TATAD0 uses the TA suffix, meaning VCC is fixed at 3.3V nominal and VCC2 is adjustable. Its internal reference is 0.4255V; an external resistor divider sets VCC2 so that the divider's midpoint equals 0.4255V. For example, with VCC2 = 1.2V, R1 ≈ 1.81MΩ and R2 = 500kΩ achieves the target. The MAX6761TATAD0 datasheet Figure 5 provides the full calculation method.
Does MAX6761TATAD0 support both push-pull and open-drain outputs?
Yes - the MAX6761TATAD0 has a push-pull UV output and an open-drain OV output. This hybrid configuration allows direct connection of UV to a microcontroller GPIO (no pullup needed), while OV can be wire-OR'd with other fault signals. The OVLATCH pin controls latching behavior independently. This dual-output topology is confirmed in the MAX6761TATAD0 selector guide (page 15) and pin description table (page 9).
What is the propagation delay for manual reset (MR) on MAX6761TATAD0?
The MAX6761TATAD0 exhibits a 40ns propagation delay (tD-MR) from MR falling edge to UV/RESET assertion, and a 100ms to 320ms delay (tMR_P, D3 option) from MR rising edge to output deassertion. These values are specified in the Electrical Characteristics table (page 5) and timing diagram Figure 7a. The 100ms minimum timeout applies to the reset release timing, ensuring reliable processor initialization.
Can MAX6761TATAD0 monitor voltages below 1.0V?
Yes - the MAX6761TATAD0 supports VCC2 monitoring down to 0.5V using the adjustable input architecture. The internal reference is 0.4255V, and the datasheet confirms operation with VCC2 as low as 0.5V (see Table 2, AA/ZA/WA suffixes and Electrical Characteristics page 4). However, VCC itself must be ≥1.4V for functional monitoring (Note 2, page 2), though outputs remain valid down to VCC = 1.0V.
How does the SET pin configure the window tolerance on MAX6761TATAD0?
For MAX6761TATAD0 (TA suffix), the SET pin is connected to VCC to select ±10% window tolerance. The datasheet specifies: SET = VCC → ±10%; SET = GND → ±5%; SET biased to VCC/2 → ±15%. This is explicitly defined in the Pin Description (page 9) and Applications Information (page 14). No external components are required - a direct VCC tie suffices for the ±10% setting used in this variant.
MAX6761TATAD0 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:
- Power Supply Monitor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 3.3V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 20µs Typical
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (3x3)
MAX6761TATAD0 FAQ
1.How can I place an order for MAX6761TATAD0 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6761TATAD0 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 MAX6761TATAD0 reliable?
The price and inventory of MAX6761TATAD0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6761TATAD0 is usually 5 days.
3.What payment methods are accepted for MAX6761TATAD0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6761TATAD0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6761TATAD0?
MAX6761TATAD0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6761TATAD0 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 MAX6761TATAD0?
For technical support, including MAX6761TATAD0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6761TATAD0 requirements.
6.How does Aetrix verify that MAX6761TATAD0 is sourced from the original manufacturer or authorized distributors?
All MAX6761TATAD0 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 MAX6761TATAD0 meets industry standards.
7.What is the process for return or replacement of MAX6761TATAD0?
All MAX6761TATAD0 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6761TATAD0, 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 MAX6761TATAD0 part is unused and in its original packaging.
Return procedure for MAX6761TATAD0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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