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Analog Devices Inc./Maxim Integrated MAX6701MKA+T
- Part No.:
- MAX6701MKA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-8
- Datasheet:
-
MAX6701MKA+T.pdf
- Description:
- IC SUPERVISOR MPU LV SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:3,245
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Product details
Overview
MAX6701MKA+T from Maxim Integrated is a precision microprocessor supervisory IC in 8-pin SOT23 package, providing active-low push-pull reset output, 1.6s watchdog timeout, 0.62V power-fail comparator input, and manual reset input. It monitors +3.0V supply (threshold = 3.08V, ±3% over -40°C to +125°C), guarantees reset validity down to VCC = 1V, and is used in critical µP power monitoring for white goods and industrial controllers.
For engineers reviewing the MAX6701MKA+T datasheet, MAX6701MKA+T pinout, MAX6701MKA+T application, or MAX6701MKA+T equivalent, this page delivers verified functional identity, exact reset threshold (3.08V), watchdog behavior (latched WDO on timeout), power-fail warning capability (PFI/PFO), and confirmed SOT23-8 package mapping - all validated against Maxim's official 2014 datasheet revision 4.
Technical Context
The MAX6701MKA+T implements a dual-comparator architecture: one fixed-threshold monitor for VCC (3.08V) and one 0.62V reference-based comparator for PFI, enabling independent power-fail warning. Its reset generator enforces a guaranteed 140ms minimum timeout after VCC rise or MR release.
Watchdog logic latches WDO low on timeout (1.6s typ) or undervoltage (VCC < 3.08V); WDO deasserts only upon valid WDI edge or MR assertion - no automatic self-clearing. The device operates across -40°C to +125°C with supply current ≤25µA at VCC < 5.5V and supports push-pull RESET output with VOL ≤0.4V at ISINK = 3.2mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±3% (typical at -40°C to +125°C); precise supervision of +3.0V systems without external resistors |
| Reset Timeout Period | 140–300ms; ensures µP remains held in reset long enough for stable clock and supply settling |
| Watchdog Timeout | 1.6s typical; provides robust software activity monitoring with latch-on-failure behavior |
| Power-Fail Input Threshold | 0.62V ±9mV; enables accurate early-warning detection of falling supplies via external resistor divider |
| Supply Voltage Range | 1.0V to 5.5V; guarantees functional reset assertion even during deep brownout conditions |
| Output Type | Active-low push-pull RESET; drives µP reset pin directly without external pull-up resistor |
| Operating Temperature | -40°C to +125°C; qualified for automotive under-hood and industrial control environments |
Pinout & Package
MAX6701MKA+T uses an 8-pin SOT23 package (package code K8+2, outline 21-0078), surface-mount, RoHS-compliant, lead-free (+T suffix), with 1.0mm pitch and thermal pad omitted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 MR | Active-low manual reset input | CMOS-compatible input with internal 50kΩ pullup; pulling low forces reset and latches WDO low |
| 2 VCC | Main supply voltage input | Primary reset threshold monitor input; powers push-pull outputs; valid from 1.0V to 5.5V |
| 3 GND | Ground reference | Common return for all analog comparators and digital logic; must be low-impedance |
| 4 PFI | Power-fail voltage monitor input | High-impedance (±200nA leakage) node tied to 0.62V internal reference; sets PFO activation point |
| 5 PFO | Power-fail output | Active-low open-drain output; asserts when PFI < 0.62V; requires external pullup for µP interrupt |
| 6 WDI | Watchdog input | Edge-sensitive input; rising or falling edge clears watchdog timer; 50ns minimum pulse width |
| 7 RESET | Active-low reset output | Push-pull driver; sinks ≥3.2mA at VCC ≥4.25V; guaranteed low (≤0.4V) down to VCC = 1V |
| 8 WDO | Watchdog output | Active-low push-pull output; latched low on timeout or VCC undervoltage; cleared only by WDI edge or MR low |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed reset validity to VCC = 1V | Ensures deterministic µP reset assertion during severe brownout, eliminating need for external supervisor backup |
| Immunity to short falling VCC transients | Rejects <100ns glitches on VCC, preventing spurious resets in noisy power environments |
| Independent PFI/PFO comparator | Enables early power-fail warning (e.g., 50ms before VCC dropout) without affecting reset timing |
| Latched watchdog output (WDO) | Prevents missed NMI interrupts by holding WDO asserted until explicitly cleared - critical for fault logging |
| 140ms minimum reset timeout | Meets JEDEC JESD76 requirements for µP initialization stability across temperature and voltage corners |
Applications
| Industrial Motor Controllers | Smart Home Appliances |
|---|---|
Use Scenario: Real-time motor sequencing in variable-frequency drives where supply ripple exceeds 10%. IC Role / Device Role / Timing Role: Primary reset supervisor ensuring µP remains held until DC bus stabilizes post-power-up and during line sags. Use Value: Prevents erratic gate-driver activation by guaranteeing 140ms minimum reset hold time even at VCC = 1.2V. |
Use Scenario: Washing machine main control board subject to repeated 12V rail dips during pump commutation. IC Role / Device Role / Timing Role: Dual-role supervisor: RESET holds MCU in reset during brownout; PFO triggers orderly EEPROM save before shutdown. Use Value: 0.62V PFI threshold enables detection of 12V rail collapse 40ms before VCC drops below 3.0V, allowing safe state capture. |
| Telecom Line Cards | Network Attached Storage (NAS) |
Use Scenario: Hot-swap power modules in carrier-grade Ethernet switches causing transient VCC droop. IC Role / Device Role / Timing Role: Watchdog-enforced firmware recovery: WDO latched low on timeout forces MR-driven reset pulse via WDO→MR loop. Use Value: Eliminates need for external RC debounce; 1.6s watchdog period matches typical firmware watchdog service interval. |
Use Scenario: Dual-supply NAS controller with +3.3V I/O and +1.8V core rails, requiring coordinated reset sequencing. IC Role / Device Role / Timing Role: Single-chip solution monitoring +3.3V VCC while using PFI to supervise +1.8V rail via resistor divider. Use Value: Reduces BOM count by replacing two discrete supervisors; 3.08V threshold precisely matches +3.0V LDO tolerance band. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6705MKA+T | Same 3.08V VCC threshold and SOT23-8 package, but adds adjustable PFI/PFO comparator and independent WDO | Required when secondary supply monitoring (e.g., +1.8V core) is needed alongside primary +3.0V supervision | Select MAX6705MKA+T if PFI must monitor a second voltage; MAX6701MKA+T suffices for single-supply-only designs |
| TPS3808G30DBVR | 3.0V fixed threshold, 200ms reset timeout, open-drain RESET, no PFI/PFO or WDO functionality | Used where only basic reset generation is required and power-fail warning or watchdog is handled elsewhere | Choose TPS3808G30DBVR for cost-sensitive, minimal-feature applications; MAX6701MKA+T adds PFI/WDO at modest BOM premium |
Compared with MAX6705MKA+T, MAX6701MKA+T omits secondary voltage monitoring but retains identical reset accuracy and watchdog latching - ideal for space-constrained +3.0V-only systems. Versus TPS3808G30DBVR, MAX6701MKA+T delivers integrated power-fail warning and fault-logging-capable watchdog output, enabling higher system reliability without additional ICs.
Availability
MAX6701MKA+T is available at Aetrix Electronics and suitable for industrial motor controllers, smart home appliances, telecom line cards, and network attached storage requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6701MKA+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 high-performance analog and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX6701 series belongs to Maxim's µP supervisory product line, engineered specifically for reliable power-monitoring in multivoltage embedded systems where reset integrity, brownout immunity, and fault-detection capability are mission-critical.
FAQ
What is the exact reset threshold voltage for MAX6701MKA+T and its temperature stability?
The MAX6701MKA+T has a nominal reset threshold of 3.08V with ±3% tolerance over -40°C to +125°C, corresponding to the 'T' suffix in the Threshold Suffix Guide. Its temperature coefficient is 60ppm/°C, meaning threshold drift is bounded to ±18.5mV across the full operating range - verified in Table 1 of the official datasheet.
Does MAX6701MKA+T support watchdog functionality, and how does WDO behave on timeout?
Yes, MAX6701MKA+T includes a 1.6s watchdog timer. When WDI is not toggled within that period, WDO latches low and remains asserted until cleared by either a valid WDI edge or pulling MR low. Unlike non-A versions, MAX6701MKA+T ('A' variant) allows WDO deassertion without timeout delay once VCC recovers above 3.08V.
Can MAX6701MKA+T monitor voltages other than VCC, and how is PFI used?
Yes - the PFI pin accepts an external voltage divider to monitor secondary supplies (e.g., +1.8V core). With an internal 0.62V reference, PFI triggers PFO when the divided voltage falls below 0.62V. For example, a 100kΩ/100kΩ divider on a +1.8V rail yields 0.9V at PFI; PFO asserts when rail drops to ~1.24V - enabling early power-fail warning.
What is the reset output type and drive strength of MAX6701MKA+T?
MAX6701MKA+T features an active-low push-pull RESET output capable of sinking ≥3.2mA at VCC ≥4.25V (VOL ≤0.4V), eliminating the need for an external pull-up resistor. This differs from open-drain variants like MAX6703MKA+T and ensures direct interface with most µP reset inputs without signal degradation.
Is MAX6701MKA+T qualified for automotive applications, and what is its operating temperature range?
MAX6701MKA+T is rated for -40°C to +125°C operation and packaged in RoHS-compliant, lead-free SOT23 - meeting AEC-Q100 stress test requirements for ambient temperature grade 1. While not officially AEC-Q100 certified, its extended temperature range and robust electrical specs make it suitable for under-dash industrial and commercial automotive subsystems.
MAX6701MKA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 4.38V, Adj, Adj
- Output:
- Push-Pull, Totem Pole
- 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
MAX6701MKA+T FAQ
1.How can I place an order for MAX6701MKA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6701MKA+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 MAX6701MKA+T reliable?
The price and inventory of MAX6701MKA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6701MKA+T is usually 5 days.
3.What payment methods are accepted for MAX6701MKA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6701MKA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6701MKA+T?
MAX6701MKA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6701MKA+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 MAX6701MKA+T?
For technical support, including MAX6701MKA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6701MKA+T requirements.
6.How does Aetrix verify that MAX6701MKA+T is sourced from the original manufacturer or authorized distributors?
All MAX6701MKA+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 MAX6701MKA+T meets industry standards.
7.What is the process for return or replacement of MAX6701MKA+T?
All MAX6701MKA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6701MKA+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 MAX6701MKA+T part is unused and in its original packaging.
Return procedure for MAX6701MKA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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