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Analog Devices Inc./Maxim Integrated MAX6707ATKA-T
- Part No.:
- MAX6707ATKA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-8
- Datasheet:
-
MAX6707ATKA-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6707ATKA-T from Maxim Integrated is an active-low open-drain microprocessor supervisory IC in 8-pin SOT23 package, monitoring single supply voltage with 2.93V reset threshold (S-suffix), 140ms reset timeout, independent power-fail comparator (0.62V reference), manual reset input, and 1.6s watchdog timer with dedicated WDO output. It ensures reliable µP startup and brownout recovery in industrial controllers and embedded systems.
For engineers reviewing the MAX6707ATKA-T datasheet, MAX6707ATKA-T pinout, MAX6707ATKA-T application, or MAX6707ATKA-T equivalent, this page delivers verified functional identity, exact pin roles, confirmed reset/watchdog timing, power-fail comparator behavior, and validated alternative options for multivoltage supervision designs.
Technical Context
The MAX6707ATKA-T implements a dual-comparator architecture: one fixed-threshold VCC monitor (2.93V) and one uncommitted 0.62V-referenced comparator for PFI/PFO. Its watchdog circuit asserts WDO low upon 1.6s WDI inactivity and deasserts immediately on valid edge detection or MR pull-low - a key A-version behavioral distinction versus non-A parts.
Reset generation is guaranteed valid down to VCC = 1V, with immunity to short VCC transients. The open-drain RESET output supports flexible pull-up configurations, while internal 50kΩ MR pullup enables pushbutton reset without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V (S-suffix), ±3% over -40°C to +125°C - sets precise brownout detection point for +3.3V systems |
| Reset Timeout Period | 140ms (typ), 120–300ms over temperature - ensures µP initialization completes before release |
| Watchdog Timeout | 1.6s (typ), 0.96–2.52s over temperature - provides robust software activity monitoring window |
| Power-Fail Threshold | 0.62V (typ), 6mV hysteresis - enables accurate early-warning detection of secondary supply collapse |
| Supply Voltage Range | 1.2V to 5.5V - guarantees operation during deep brownout and supports wide-input regulator outputs |
| RESET Output Type | Active-low open drain - allows wired-OR configuration and level translation with external pull-up |
| WDO Output Type | Active-low open drain - isolates watchdog fault signaling from reset path for NMI use |
Pinout & Package
Package: 8-pin SOT23-8 (JEDEC MO-178 BA variation, 1.95mm × 2.80mm body, 0.65mm pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 MR | Manual Reset Input | CMOS-compatible active-low input with internal 50kΩ pullup; forces RESET/WDO assertion when pulled low |
| 2 VCC | Supply Voltage Input | Primary power rail input; powers internal comparators, timer, and drives push-pull outputs (not used here) |
| 3 GND | Ground Reference | System ground return for all internal circuits and comparator references |
| 4 PFI | Power-Fail Input | High-impedance comparator input referenced to 0.62V; accepts external resistive divider for secondary supply monitoring |
| 5 PFO | Power-Fail Output | Open-drain active-low output asserted when PFI < 0.62V; used for early warning interrupt or cascaded reset |
| 6 WDI | Watchdog Input | Edge-sensitive input; rising/falling edges clear watchdog timer; 50ns minimum pulse width detectable |
| 7 RESET | Reset Output | Active-low open-drain output; asserted during power-up, brownout, MR activation, or watchdog timeout |
| 8 WDO | Watchdog Output | Independent active-low open-drain output; asserted solely on watchdog timeout or undervoltage condition |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed Reset Valid to VCC = 1V | Ensures deterministic reset assertion even during severe brownout, preventing µP latch-up or undefined state |
| Immunity to Short Falling VCC Transients | Rejects sub-100ns supply glitches, eliminating false resets in noisy industrial power environments |
| Independent Power-Fail Comparator | Uncommitted PFI/PFO pair enables flexible early-warning monitoring of I/O or core supplies without additional ICs |
| A-Version Watchdog Behavior | WDO deasserts immediately after VCC recovery (no timeout delay), enabling faster system recovery than standard versions |
| Low Quiescent Current | 9–20µA typical ICC over operating range - extends battery life in always-on monitoring applications |
Applications
| Industrial Controller Supervision | Automotive Body Control Module |
|---|---|
Use Scenario: Monitoring 3.3V main supply and 5V I/O rail in PLC CPU module with brownout resilience requirement. IC Role / Device Role / Timing Role: MAX6707ATKA-T provides primary reset assertion, independent PFI-based early warning on I/O rail, and watchdog supervision of firmware execution. Use Value: Prevents spurious reboots during transient load dumps; PFO interrupt allows graceful I/O shutdown before full power loss. | Use Scenario: Supervising microcontroller power in door module with 12V-to-3.3V DC-DC converter and backup battery path. IC Role / Device Role / Timing Role: MAX6707ATKA-T monitors main 3.3V rail, uses PFI to detect backup battery sag below 2.7V, and asserts WDO on firmware hang. Use Value: Enables fail-safe door lock actuation during main power failure; watchdog prevents stuck relay states. |
| White Goods Mainboard | Telecom Remote Terminal Unit |
Use Scenario: Power sequencing and fault monitoring in washing machine main control board with variable-speed motor drive. IC Role / Device Role / Timing Role: MAX6707ATKA-T asserts RESET at power-up, detects VCC brownout during motor surge, and triggers PFO interrupt for pump shutdown. Use Value: Eliminates MCU crash during high-current motor commutation; PFO enables predictive maintenance alert. | Use Scenario: Supervising ARM-based baseband processor in outdoor cellular repeater with wide ambient temperature range. IC Role / Device Role / Timing Role: MAX6707ATKA-T provides -40°C to +125°C guaranteed reset, monitors 3.3V supply, and uses WDO for NMI-based firmware watchdog escalation. Use Value: Ensures cold-start reliability; open-drain outputs interface directly with 1.8V/3.3V logic without level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6707TKA-T | Non-A version: WDO latches low on timeout and requires WDI edge to deassert; no MR-triggered WDO deassertion | Suitable where watchdog fault persistence is required until software intervention | Select MAX6707TKA-T only if latched watchdog behavior aligns with system fault-handling policy |
| TPS3808G33DBVR | TI part: 3.3V fixed threshold, 200ms reset timeout, no PFI/PFO, no watchdog output - only RESET and MR | Limited to single-rail monitoring without power-fail warning or independent watchdog signaling | Choose TPS3808G33DBVR only when PFI/PFO and WDO functions are unnecessary and longer reset timeout is acceptable |
Compared with MAX6707TKA-T, the MAX6707ATKA-T offers faster watchdog recovery via MR control and eliminates need for software WDI toggling after undervoltage events; versus TPS3808G33DBVR, it adds critical power-fail warning and isolated watchdog signaling essential for safety-critical embedded systems.
Availability
MAX6707ATKA-T is available at Aetrix Electronics and suitable for industrial controllers, automotive body electronics, white goods mainboards, and telecom remote terminal units requiring stable component supply across extended temperature ranges.
Supply support for MAX6707ATKA-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
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for power, sensing, and connectivity applications.
The MAX6701–MAX6708 family targets cost-sensitive, space-constrained microprocessor systems needing integrated reset, watchdog, and power-fail monitoring in a single SOT23 package.
FAQ
What is the reset threshold voltage for MAX6707ATKA-T?
The MAX6707ATKA-T has a nominal reset threshold of 2.93V (S-suffix), specified over -40°C to +125°C with ±3% tolerance. This value is factory-trimmed and applies to the VCC supply monitoring function. The device also includes a separate 0.62V reference for the PFI input, enabling adjustable secondary supply monitoring via external resistor dividers.
Does MAX6707ATKA-T support operation down to 1.2V supply voltage?
Yes, MAX6707ATKA-T operates from 1.2V to 5.5V. Its reset output remains guaranteed valid down to VCC = 1V, and internal circuitry functions correctly at 1.2V minimum. This enables reliable supervision during deep brownout conditions common in battery-backed or energy-harvesting systems where the MAX6707ATKA-T maintains deterministic reset assertion.
How does the watchdog behavior differ between MAX6707ATKA-T and non-A versions?
The MAX6707ATKA-T watchdog output (WDO) deasserts immediately when VCC recovers above threshold - no timeout delay. In contrast, non-A versions like MAX6707TKA-T require a valid WDI edge to clear WDO after timeout. Additionally, pulling MR low deasserts WDO on MAX6707ATKA-T, enabling hardware-initiated watchdog recovery not possible with standard versions.
Can MAX6707ATKA-T monitor multiple supply rails simultaneously?
No, MAX6707ATKA-T monitors only one primary supply (VCC) with its fixed 2.93V threshold. However, its dedicated PFI input - referenced to an internal 0.62V comparator - allows monitoring of a second supply rail (e.g., I/O or core voltage) using an external resistor divider. This provides dual-rail supervision capability without requiring a second supervisor IC.
What is the function of the PFI and PFO pins on MAX6707ATKA-T?
PFI is a high-impedance input referenced to an internal 0.62V comparator; connecting it to a resistor divider enables early-warning detection of secondary supply collapse. PFO is the corresponding open-drain active-low output that asserts when PFI falls below 0.62V. Together, they form a configurable power-fail detection channel - distinct from the main reset function - allowing the MAX6707ATKA-T to trigger interrupts or initiate controlled shutdown before main supply failure.
MAX6707ATKA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 3.08V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
MAX6707ATKA-T FAQ
1.How can I place an order for MAX6707ATKA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6707ATKA-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 MAX6707ATKA-T reliable?
The price and inventory of MAX6707ATKA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6707ATKA-T is usually 5 days.
3.What payment methods are accepted for MAX6707ATKA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6707ATKA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6707ATKA-T?
MAX6707ATKA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6707ATKA-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 MAX6707ATKA-T?
For technical support, including MAX6707ATKA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6707ATKA-T requirements.
6.How does Aetrix verify that MAX6707ATKA-T is sourced from the original manufacturer or authorized distributors?
All MAX6707ATKA-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 MAX6707ATKA-T meets industry standards.
7.What is the process for return or replacement of MAX6707ATKA-T?
All MAX6707ATKA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6707ATKA-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 MAX6707ATKA-T part is unused and in its original packaging.
Return procedure for MAX6707ATKA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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