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Analog Devices Inc./Maxim Integrated MAX6707ATKA
- Part No.:
- MAX6707ATKA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-8
- Datasheet:
-
MAX6707ATKA.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,784
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Product details
Overview
The MAX6707ATKA from Maxim Integrated is a single-supply microprocessor supervisory IC in an 8-pin SOT23 package, featuring active-low open-drain reset output, independent watchdog timer with 1.6s timeout, adjustable 0.62V power-fail comparator (PFI/PFO), and manual reset input. It monitors +5.0V/+3.3V/+3.0V/+2.5V rails and guarantees valid reset down to VCC = 1V - used in automotive ECUs and industrial controllers for reliable brownout recovery.
For engineers reviewing the MAX6707ATKA datasheet, MAX6707ATKA pinout, MAX6707ATKA application, or MAX6707ATKA equivalent, this page delivers verified functional architecture, exact pin roles, confirmed reset/wdog timing, PFI threshold behavior, and real-world substitution guidance - all aligned to Maxim's official MAX6701–MAX6708 family documentation.
Technical Context
The MAX6707ATKA implements a dual-comparator supervision architecture: one fixed-threshold monitor on VCC (configurable via suffix 'T' = 3.08V), and one independent 0.62V reference-based comparator on PFI for early power-fail warning. Its watchdog circuit asserts WDO low after 1.6s of no WDI edge, and deasserts immediately upon MR pull-down or valid WDI transition - unlike non-A versions which latch WDO until WDI toggles.
Reset generation uses a 140ms timeout period after VCC, PFI, or MR fault clearance; the open-drain RESET output sinks ≥1.2mA at VCC ≥2.55V with VOL ≤0.3V, while guaranteed operation extends to VCC = 1.0V. Immunity to short VCC transients (<100ns) is built-in per design specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V (VCC falling), ±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 completes boot sequence before release |
| Watchdog Timeout | 1.6s (typ), 0.96–2.52s over temperature - provides robust firmware hang detection without false triggers |
| PFI Threshold | 0.62V (typ), ±5mV hysteresis - enables accurate external voltage monitoring down to sub-1V rails |
| Supply Current | 9µA (typ) at VCC = 3.3V, 20µA max - supports ultra-low-power always-on supervision |
| Operating Voltage Range | 1.2V to 5.5V - allows use with Li-ion, 1.8V/2.5V/3.3V/5V logic domains |
| Output Type | Active-low open-drain RESET and WDO - enables wired-OR reset bus and level-shifting flexibility |
Pinout & Package
Package: 8-pin SOT23-8 (JEDEC MO-178 BA variation, 1.95mm × 2.80mm body, 0.65mm pitch). Pin 1 marked with dot; coplanarity ≤4 mils.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 MR | Active-low manual reset input | CMOS-compatible; internal 50kΩ pullup; forces reset when pulled low; also clears WDO in A-version |
| 2 VCC | Main supply input | Power source for internal comparators and outputs; reset threshold referenced to this rail |
| 3 GND | Ground reference | Common return for all analog/digital functions; must be low-impedance connection |
| 4 PFI | Power-fail input | High-Z input to 0.62V comparator; accepts external resistor divider for custom trip points |
| 5 PFO | Power-fail output | Open-drain active-low output; asserts when PFI < 0.62V - used for µP interrupt or secondary reset |
| 6 WDI | Watchdog input | Edge-sensitive; 50ns minimum pulse width; toggling resets internal 1.6s timer |
| 7 RESET | Active-low reset output | Open-drain; sinks ≥1.2mA at VCC ≥2.55V; remains asserted for full timeout after fault clears |
| 8 WDO | Active-low watchdog output | Open-drain; asserts on WDI timeout or VCC/RST_IN undervoltage; deasserts instantly on MR low in A-version |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed reset validity to VCC = 1V | Ensures deterministic reset assertion during deep brownout, critical for automotive cold-crank scenarios |
| Independent PFI/PFO comparator | Enables early power-fail warning and controlled shutdown without affecting primary reset path |
| MR-driven WDO deassertion (A-version) | Allows immediate watchdog recovery via pushbutton - eliminates 1.6s delay required in non-A parts |
| Immunity to short VCC transients | Rejects <100ns supply glitches, preventing spurious resets in noisy industrial environments |
| Low 9µA typical supply current | Minimizes standby power in battery-backed systems and energy-harvesting applications |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitoring 3.3V microcontroller supply and 5V sensor interface rail during engine cranking with severe battery dip. IC Role / Device Role / Timing Role: Primary supervisor asserting RESET during VCC brownout; PFI tied to 5V rail via divider for pre-failure alert. Use Value: Prevents ECU lockup by guaranteeing reset until VCC recovers above 3.08V and holds for 140ms - validated to -40°C to +125°C. | Use Scenario: Supervising FPGA configuration voltage and auxiliary 2.5V I/O bank in modular PLC backplane. IC Role / Device Role / Timing Role: Single-rail supervisor with PFO routed to FPGA's INIT_B pin for controlled reconfiguration on power anomaly. Use Value: Open-drain RESET and PFO allow direct connection to FPGA inputs without level shifters; 1.2V min operating voltage supports low-VCC test modes. |
| Medical Infusion Pump Controller | Telecom Remote Radio Unit (RRU) |
Use Scenario: Ensuring safe shutdown when main 5V DC-DC output drops below 4.5V due to load transient or thermal foldback. IC Role / Device Role / Timing Role: Dual-role device: RESET halts motor driver; PFO triggers NMI to log fault before power loss. Use Value: Independent PFI comparator detects 5V sag 100ms before reset threshold breach - enabling graceful drug delivery stop. | Use Scenario: Monitoring +3.3V FPGA core supply and -48V DC feed in outdoor base station equipment exposed to wide temperature swings. IC Role / Device Role / Timing Role: Supervisor with MR connected to service button; WDO feeds FPGA watchdog input for firmware health check. Use Value: 140ms reset timeout prevents false restarts during brief RF-induced supply noise; A-version WDO/MR interaction enables field technician reset without power cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6707TKA | Same pinout and features, but non-A version: WDO latches low until WDI toggle; no MR-driven deassertion | Requires WDI toggling to clear watchdog fault - unsuitable where manual override is mandatory | Select MAX6707ATKA when immediate WDO reset via pushbutton is required; choose MAX6707TKA only if WDI is reliably driven in-system. |
| TPS3808G33DBVR | TI part with 3.3V fixed reset threshold, 200ms timeout, push-pull RESET, no PFI/PFO or watchdog output | Lacks power-fail warning and independent watchdog output - cannot replace PFO/NMI or WDO/NMI functions | Use only as basic reset-only replacement; requires redesign for PFI/PFO and WDO signal routing. |
Compared with MAX6707TKA and TPS3808G33DBVR, the MAX6707ATKA uniquely combines MR-activated WDO deassertion, dedicated PFI/PFO for predictive power management, and guaranteed 1V operation - making it irreplaceable in safety-critical brownout recovery and orderly shutdown designs.
Availability
MAX6707ATKA is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC modules, medical infusion pump controllers, and telecom remote radio units requiring stable component supply across extended temperature ranges.
Supply support for MAX6707ATKA 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 MAX6701–MAX6708 family was engineered specifically for high-reliability microprocessor supervision in harsh environments - delivering integrated reset, watchdog, power-fail warning, and manual reset in minimal SOT23 footprint.
FAQ
What is the exact reset threshold voltage for MAX6707ATKA?
The MAX6707ATKA has a nominal VCC reset threshold of 3.08V (suffix 'T'), with ±3% tolerance over -40°C to +125°C. This value is factory-trimmed and specified in the Electrical Characteristics table under 'VTH' for MAX670_T/MAX670_AT variants. The threshold applies to VCC falling conditions and initiates the 140ms reset timeout period.
Does MAX6707ATKA support operation below 1.2V?
No - the absolute minimum operating voltage for MAX6707ATKA is 1.2V, as stated in the Absolute Maximum Ratings and Electrical Characteristics tables. While reset output is guaranteed valid down to VCC = 1.0V, the device does not function or monitor correctly below 1.2V. Operation below this limit risks undefined behavior and is outside specification.
How does the watchdog behavior differ between MAX6707ATKA and MAX6707TKA?
In MAX6707ATKA, WDO deasserts immediately when MR is pulled low - enabling instant watchdog recovery via pushbutton. In contrast, MAX6707TKA requires a valid WDI edge to clear latched WDO; MR only asserts reset and does not affect WDO state. This distinction is documented in the Standard- vs. A-Version Comparison section of the datasheet.
Can PFI on MAX6707ATKA monitor voltages below 0.62V?
No - the internal reference for the PFI comparator is fixed at 0.62V (typ), and the comparator only asserts PFO when PFI falls *below* that threshold. To monitor lower voltages, an external op-amp level shifter or dedicated low-Vin supervisor like MAX6369 would be required. The PFI input itself operates down to 0V, but detection is anchored to the 0.62V reference.
Is MAX6707ATKA pin-compatible with other parts in the MAX6701–MAX6708 family?
Yes - all MAX6701–MAX6708 variants, including MAX6707ATKA, share identical 8-pin SOT23-8 pinout and footprint. However, functionality differs: MAX6707ATKA uses pins 7 (RESET) and 8 (WDO) as open-drain outputs, while MAX6702ATKA uses pin 7 as active-high push-pull RESET and omits WDO. Always verify function mapping per variant before substitution.
MAX6707ATKA 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 FAQ
1.How can I place an order for MAX6707ATKA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6707ATKA 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 reliable?
The price and inventory of MAX6707ATKA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6707ATKA is usually 5 days.
3.What payment methods are accepted for MAX6707ATKA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6707ATKA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6707ATKA?
MAX6707ATKA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6707ATKA 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?
For technical support, including MAX6707ATKA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6707ATKA requirements.
6.How does Aetrix verify that MAX6707ATKA is sourced from the original manufacturer or authorized distributors?
All MAX6707ATKA 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 meets industry standards.
7.What is the process for return or replacement of MAX6707ATKA?
All MAX6707ATKA units undergo pre-shipment inspection (PSI). If there is an issue with MAX6707ATKA, 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 part is unused and in its original packaging.
Return procedure for MAX6707ATKA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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