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Analog Devices Inc./Maxim Integrated MAX6761TALAD3
- Part No.:
- MAX6761TALAD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6761TALAD3.pdf
- Description:
- MAX6761 LOW-POWER, SINGLE/DUAL-V
- Quantity:
- Payment:
- Shipping:
Inventory:2,301
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Product details
Overview
MAX6761TALAD3 from Maxim Integrated is a dual-voltage window detector IC that monitors both VCC (5V nominal) and VCC2 (3.3V nominal) supply rails for undervoltage/overvoltage faults, with independent push-pull UV and open-drain OV outputs, 100ms minimum reset timeout, ±5% threshold window, and latched overvoltage functionality - used in microprocessor power supervision for telecom and industrial control systems.
For engineers reviewing the MAX6761TALAD3 datasheet, MAX6761TALAD3 pinout, MAX6761TALAD3 application, or MAX6761TALAD3 equivalent, key selection criteria include dual-rail monitoring capability, factory-trimmed 5V/3.3V thresholds, latched OV output behavior, manual reset input timing, and TDFN-8 package compatibility with high-temperature industrial designs.
Technical Context
The MAX6761TALAD3 implements two independent voltage comparators with internal reference and hysteresis (0.7%), each feeding separate UV/OV logic paths. Its OVLATCH pin enables persistent fault indication until cleared, distinguishing it from non-latching variants like MAX6763/MAX6764.
It uses a fixed internal divider to set nominal thresholds (5.0V VCC, 3.3V VCC2), with SET pin selecting ±5% window (GND-connected), and supports operation down to VCC = 1.4V while maintaining output assertion integrity at VCC ≥ 1.0V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Threshold | 5.0V nominal, ±5% window (4.75V–5.25V UV/OV range) |
| VCC2 Threshold | 3.3V nominal, ±5% window (3.135V–3.465V UV/OV range) |
| Reset Timeout | 100ms minimum - ensures stable MCU boot after brownout recovery |
| Supply Current | 13µA typical at 3.6V - enables always-on monitoring in low-power systems |
| Operating Temp | -40°C to +125°C - qualified for under-hood automotive and industrial environments |
| Output Types | UV: active-low push-pull; OV: active-low open-drain with latch control |
| Threshold Hysteresis | 0.7% - prevents chatter during slow supply transitions near trip points |
Pinout & Package
MAX6761TALAD3 is housed in an 8-pin TDFN-EP (3mm × 3mm) package with exposed pad connected to GND. Pin 1 is marked by dot; EP must be soldered to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary power input and first monitored rail (5V nominal) |
| 2 | GND | Ground reference for all internal circuitry and outputs |
| 3 | OVLATCH | High-impedance control input to latch/clear OV output state |
| 4 | VCC2 | Secondary power input and second monitored rail (3.3V nominal) |
| 5 | MR | Active-low manual reset input with 26kΩ internal pullup to VCC |
| 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 | Window select input - GND = ±5%, VCC = ±10%, VCC/2 = ±15% |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously supervises 5V core and 3.3V I/O rails without external components |
| Latched overvoltage output | OVLATCH pin holds OV low until explicitly cleared - critical for fault logging in safety-critical systems |
| Manual reset with propagation delay | MR input triggers UV assertion with 100ms timeout (D3 option), enabling controlled system reset sequencing |
| Low quiescent current | 13µA ICC at 3.6V allows integration into battery-backed or energy-harvesting subsystems |
| Extended temperature operation | Guaranteed functionality from -40°C to +125°C - suitable for engine control units and base station power supplies |
| Transient-immune design | 300ns immunity to fast supply transients prevents false triggering in noisy DC-DC converter environments |
Applications
| Telecom Power Supervision | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Monitoring primary 5V and auxiliary 3.3V rails in LTE baseband power management. IC Role / Device Role / Timing Role: Dual-rail window detector asserting UV/OV flags to FPGA supervisor logic with 100ms reset hold time. Use Value: Prevents firmware corruption during partial rail collapse by ensuring clean reset before processor restart. |
Use Scenario: Supervising field-side 5V sensor bus and 3.3V logic supply in modular I/O chassis. IC Role / Device Role / Timing Role: Fault-detection interface between isolated power domains and central controller via latched OV output. Use Value: Enables deterministic fault isolation - OVLATCH retains OV state until maintenance personnel acknowledge event. |
| Automotive ADAS ECU | Server BMC Power Sequencing |
|
Use Scenario: Core voltage monitoring for radar processor SoC operating in under-hood environment. IC Role / Device Role / Timing Role: High-temp window detector providing UV flag to ASIL-B compliant watchdog circuit. Use Value: Meets AEC-Q100 Grade 1 requirements with guaranteed -40°C to +125°C operation and 0.7% hysteresis. |
Use Scenario: Coordinating 5V standby and 3.3V main rail power-up in server baseboard management controller. IC Role / Device Role / Timing Role: Dual-threshold supervisor generating synchronized reset signals with manual override via MR pin. Use Value: Eliminates need for discrete RC timing networks - reduces BOM count and improves startup repeatability. |
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 |
|---|---|---|---|
| MAX6762TALAD3 | Same pinout and thresholds, but UV output is open-drain (not push-pull) | Requires external pullup for UV signal; less drive strength for direct MCU input | Select when interfacing with legacy 3.3V logic requiring open-drain arbitration |
| TLV809E33DBZR | Single 3.3V supervisor only; no VCC2 monitoring, no OVLATCH, no SET adjustability | Limited to single-rail systems; lacks latching and dual-supply coordination | Choose only for cost-sensitive, single-rail applications where latch function is unnecessary |
Compared with MAX6762TALAD3, MAX6761TALAD3 provides stronger UV drive for direct microcontroller reset inputs; versus TLV809E33DBZR, it delivers full dual-rail supervision with fault retention - essential for systems requiring coordinated response to multi-rail failures.
Availability
MAX6761TALAD3 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and automotive ADAS ECUs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6761TALAD3 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 industrial and automotive environments.
The MAX6761TALAD3 belongs to the MAX6754–MAX6764 family of low-power window detectors engineered specifically for reliable dual-rail power supervision in high-temperature, noise-prone systems such as base stations and engine control units.
FAQ
What is the exact VCC and VCC2 threshold configuration for MAX6761TALAD3?
The MAX6761TALAD3 has factory-trimmed thresholds: VCC nominal = 5.0V (UVTH = 4.75V, OVTH = 5.25V) and VCC2 nominal = 3.3V (UVTH2 = 3.135V, OVTH2 = 3.465V), both with ±5% window set by grounding the SET pin. These values are guaranteed over -40°C to +125°C per the datasheet's Electrical Characteristics tables.
Does MAX6761TALAD3 support latched overvoltage behavior, and how is it controlled?
Yes, MAX6761TALAD3 supports latched overvoltage output via the OVLATCH pin. When OVLATCH is driven high, the OV output remains asserted even after VCC/VCC2 returns to valid range; driving OVLATCH low clears the latch. The latch is transparent when OVLATCH is tied to GND - a key differentiator from non-latching variants like MAX6763.
What package type and thermal characteristics does MAX6761TALAD3 use?
MAX6761TALAD3 is supplied in an 8-pin TDFN-EP (3mm × 3mm) package with exposed pad. Its continuous power dissipation is rated at 1951mW at +70°C (derated 24.4mW/°C above), and junction temperature is limited to +150°C. The EP must be soldered to a PCB ground plane for optimal thermal performance.
Can MAX6761TALAD3 monitor voltages below 1.0V on either rail?
No. MAX6761TALAD3 requires VCC ≥ 1.4V for functional voltage monitoring; however, its outputs remain asserted in correct logic state down to VCC = 1.0V. VCC2 monitoring is similarly constrained - the device does not support sub-1.0V rail supervision, unlike the externally adjustable MAX6763/MAX6764 which operate down to 0.5V.
How does the manual reset (MR) pin interact with the 100ms timeout in MAX6761TALAD3?
When MR is pulled low, MAX6761TALAD3 immediately asserts the UV output. Upon MR release (rising edge), the UV output remains asserted for the full 100ms minimum timeout period (D3 option), regardless of VCC/VCC2 status - ensuring deterministic reset hold time for microcontrollers. This behavior is confirmed in Figure 7a and Table 3 of the datasheet.
MAX6761TALAD3 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:
- 5V, 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)
MAX6761TALAD3 FAQ
1.How can I place an order for MAX6761TALAD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6761TALAD3 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 MAX6761TALAD3 reliable?
The price and inventory of MAX6761TALAD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6761TALAD3 is usually 5 days.
3.What payment methods are accepted for MAX6761TALAD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6761TALAD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6761TALAD3?
MAX6761TALAD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6761TALAD3 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 MAX6761TALAD3?
For technical support, including MAX6761TALAD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6761TALAD3 requirements.
6.How does Aetrix verify that MAX6761TALAD3 is sourced from the original manufacturer or authorized distributors?
All MAX6761TALAD3 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 MAX6761TALAD3 meets industry standards.
7.What is the process for return or replacement of MAX6761TALAD3?
All MAX6761TALAD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6761TALAD3, 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 MAX6761TALAD3 part is unused and in its original packaging.
Return procedure for MAX6761TALAD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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