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Analog Devices Inc./Maxim Integrated MAX6761TATWD3
- Part No.:
- MAX6761TATWD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6761TATWD3.pdf
- Description:
- MAX6761 LOW-POWER, SINGLE/DUAL-V
- Quantity:
- Payment:
- Shipping:
Inventory:1,565
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Product details
Overview
MAX6761TATWD3 from Maxim Integrated is a dual-voltage window detector IC that monitors both VCC (3.3V nominal) and VCC2 (1.8V nominal) supply rails for undervoltage/overvoltage conditions, with ±10% 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-level power supervisor in automotive and industrial microprocessor power domains.
For engineers reviewing the MAX6761TATWD3 datasheet, MAX6761TATWD3 pinout, MAX6761TATWD3 application, or MAX6761TATWD3 equivalent, key selection criteria include dual-rail monitoring capability, latched OV output behavior, TDFN-8 package footprint, ±10% window tolerance, and guaranteed operation down to VCC = 1.0V with 10µA supply current.
Technical Context
The MAX6761TATWD3 implements two independent internal voltage comparators-one for VCC (3.3V nominal) and one for VCC2 (1.8V nominal)-each with programmable ±10% window via SET pin tied to VCC. It features separate push-pull UV and open-drain OV outputs, with OV latch controlled by OVLATCH pin, and MR input with 26kΩ internal pullup.
It uses a precision bandgap reference and hysteresis of 0.7% to reject transients; propagation delays are 20µs (D0 option) or 100ms min (D3 option), and it remains functional with VCC as low as 1.0V while maintaining correct output logic states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Nominal | 3.3V - primary monitored rail; factory-trimmed threshold with ±10% window |
| VCC2 Nominal | 1.8V - secondary monitored rail; fixed threshold with ±10% window |
| Reset Timeout | 100ms min - ensures stable processor reset after power recovery |
| Supply Current | 13µA typ at 3.6V - enables ultra-low-power always-on supervision |
| Operating Temp | -40°C to +125°C - qualified for under-hood automotive and industrial environments |
| Output Types | UV: push-pull; OV: open-drain with latch control - supports flexible system-level fault handling |
| Threshold Hysteresis | 0.7% - prevents chatter during slow-moving or noisy supply transitions |
Pinout & Package
MAX6761TATWD3 is housed in an 8-pin TDFN-EP package (3mm × 3mm, 0.75mm height) with exposed pad connected to GND for thermal and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC | Power Input & Primary Monitor Rail | Powers device and serves as first monitored voltage (3.3V nominal) |
| 2 - GND | Ground Reference | Common return for all analog and digital circuitry; EP internally tied to this pin |
| 3 - VCC2 | Secondary Monitor Rail | Input for second monitored voltage (1.8V nominal); powers device if VCC2 > VCC |
| 4 - MR | Active-Low Manual Reset | Asserts UV/RESET when pulled low; 26kΩ internal pullup ensures default high state |
| 5 - SET | Window Threshold Select | Tied to VCC for ±10% window; GND for ±5%, VCC/2 for ±15% |
| 6 - UV | Undervoltage Output | Push-pull active-low output asserting when either VCC or VCC2 falls below UVTH |
| 7 - OVLATCH | Overvoltage Latch Control | High = latch OV on overvoltage; low = clear latch; high-impedance input requires external bias |
| 8 - OV | Overvoltage Output | Open-drain active-low output asserting immediately on overvoltage; latched per OVLATCH state |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously supervises 3.3V core and 1.8V I/O rails without external components |
| Latched overvoltage output | OVLATCH pin enables persistent fault indication until cleared-critical for safety-critical systems |
| Manual reset with propagation delay | MR input provides deterministic reset assertion timing (100ms D3 timeout) for controlled system restart |
| Low-voltage valid outputs | UV/OV remain logically correct even when VCC drops to 1.0V-ensures fail-safe behavior during brownout |
| Transient-immune architecture | 300ns immunity to fast spikes and 0.7% hysteresis prevent false triggering in noisy automotive environments |
Applications
| Automotive Microcontroller Supervision | Industrial PLC Power Monitoring |
|---|---|
Use Scenario: Monitoring 3.3V MCU core and 1.8V I/O supply in engine control unit (ECU) under wide temperature and load-dump conditions. IC Role / Device Role / Timing Role: Dual-rail supervisor with latched OV output ensures permanent fault flagging until diagnostic reset, meeting ASIL-B functional safety requirements. Use Value: Eliminates need for external latch or microcontroller polling-reduces BOM count and firmware complexity while improving fault response determinism. | Use Scenario: Supervising redundant 3.3V and 1.8V supplies powering FPGA configuration and I/O banks in programmable logic controller. IC Role / Device Role / Timing Role: Provides independent UV/OV detection with 100ms timeout and manual reset, enabling safe shutdown before logic corruption occurs. Use Value: Guarantees correct output state down to VCC = 1.0V-prevents spurious resets during brownout recovery and improves system robustness. |
| Telecom DC-DC Module Protection | Medical Imaging Power Sequencing |
Use Scenario: Detecting overvoltage on 3.3V auxiliary rail and undervoltage on 1.8V sensor interface rail in base station power module. IC Role / Device Role / Timing Role: OV latch function triggers immediate SCR-based fuse blow on overvoltage, while UV output initiates graceful shutdown sequence. Use Value: 0.7% hysteresis and 300ns transient immunity prevent nuisance trips from switching noise-increasing field reliability. | Use Scenario: Ensuring clean power-up sequencing of 3.3V imaging processor and 1.8V ADC reference supply in portable ultrasound device. IC Role / Device Role / Timing Role: Dual-rail monitoring with ±10% window tolerances accommodates tight supply tolerances required for medical-grade signal integrity. Use Value: TDFN-8 package enables compact layout near critical power rails-minimizing trace inductance and improving noise rejection. |
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 |
|---|---|---|---|
| MAX6762TATWD3 | Same pinout and electrical specs, but UV output is open-drain instead of push-pull | Requires external pullup for UV signal; less drive strength than MAX6761TATWD3 | Select when interfacing with legacy 3.3V logic requiring weak-pull high-impedance states |
| TLV809E33DBZR | Single 3.3V supervisor only; no VCC2 monitoring, no OV latch, no SET pin | Lacks dual-rail capability and fault persistence-suitable only for basic single-rail reset | Choose only for cost-sensitive, non-safety-critical applications where dual monitoring is unnecessary |
Compared with MAX6762TATWD3 and TLV809E33DBZR, the MAX6761TATWD3 uniquely delivers push-pull UV drive strength, integrated dual-rail supervision, and configurable OV latching-making it optimal for automotive and industrial systems requiring deterministic fault handling without added discrete logic.
Availability
MAX6761TATWD3 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC development, and telecom DC-DC module production requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6761TATWD3 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 MAX6754–MAX6764 family was engineered specifically for high-reliability power supervision in harsh environments, emphasizing low quiescent current, wide temperature operation, and robust transient immunity.
FAQ
What is the exact VCC and VCC2 threshold voltage range for MAX6761TATWD3?
The MAX6761TATWD3 has factory-trimmed thresholds: VCC nominal = 3.3V with ±10% window (OVTH = 3.63V, UVTH = 2.97V), and VCC2 nominal = 1.8V with ±10% window (OVTH2 = 1.98V, UVTH2 = 1.62V), all specified over -40°C to +125°C. These values are confirmed in Tables 1 and 2 of the MAX6754–MAX6764 datasheet.
Does MAX6761TATWD3 support latched overvoltage behavior, and how is it controlled?
Yes, MAX6761TATWD3 supports latched overvoltage output via the OVLATCH pin. When OVLATCH is driven high, the OV output remains asserted after an overvoltage event until OVLATCH is pulled low. When tied to GND, the latch is transparent-OV deasserts immediately upon voltage return to normal. This behavior is documented in the Pin Description and Functional Diagram sections.
What package type and footprint does MAX6761TATWD3 use?
MAX6761TATWD3 uses an 8-pin TDFN-EP package (3mm × 3mm, 0.75mm height) with exposed pad connected to GND. The ordering code "TATWD3" confirms TDFN-8 packaging, as defined in the Ordering Information table and Pin Configurations section of the datasheet.
Can MAX6761TATWD3 operate with VCC below 1.4V, and what happens to its outputs?
Yes, MAX6761TATWD3 operates with VCC down to 1.0V. While voltage monitoring requires VCC ≥ 1.4V, the UV and OV outputs remain in their correct asserted/deasserted logic states for VCC as low as 1.0V-ensuring fail-safe behavior during deep brownout. This is explicitly stated in Note 2 of the Electrical Characteristics table.
How does the SET pin configure the window tolerance on MAX6761TATWD3?
On MAX6761TATWD3, the SET pin selects window tolerance: tie to GND for ±5%, to VCC for ±10% (as used in this part), or bias to VCC/2 for ±15%. This configuration applies identically to both VCC and VCC2 thresholds and is validated in the SET Input-Voltage High/Low specifications and Figure 5 of the datasheet.
MAX6761TATWD3 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, 3.3V
- 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)
MAX6761TATWD3 FAQ
1.How can I place an order for MAX6761TATWD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6761TATWD3 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 MAX6761TATWD3 reliable?
The price and inventory of MAX6761TATWD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6761TATWD3 is usually 5 days.
3.What payment methods are accepted for MAX6761TATWD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6761TATWD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6761TATWD3?
MAX6761TATWD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6761TATWD3 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 MAX6761TATWD3?
For technical support, including MAX6761TATWD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6761TATWD3 requirements.
6.How does Aetrix verify that MAX6761TATWD3 is sourced from the original manufacturer or authorized distributors?
All MAX6761TATWD3 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 MAX6761TATWD3 meets industry standards.
7.What is the process for return or replacement of MAX6761TATWD3?
All MAX6761TATWD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6761TATWD3, 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 MAX6761TATWD3 part is unused and in its original packaging.
Return procedure for MAX6761TATWD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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