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Analog Devices Inc./Maxim Integrated MAX6701TKA+T
- Part No.:
- MAX6701TKA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-8
- Datasheet:
-
MAX6701TKA+T.pdf
- Description:
- IC SUPERVISOR MPU LV SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,430
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Product details
Overview
MAX6701TKA+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 (3.08V threshold), guarantees reset validity down to VCC = 1V, and is used in critical µP power monitoring for white goods and networking equipment.
For engineers reviewing the MAX6701TKA+T datasheet, MAX6701TKA+T pinout, MAX6701TKA+T application, or MAX6701TKA+T equivalent, this page delivers verified functional identity, confirmed pin roles, exact reset timing (140ms timeout), true watchdog behavior (latched WDO on timeout), and validated alternatives for triple-voltage supervision systems requiring manual reset and power-fail warning.
Technical Context
The MAX6701TKA+T implements a dual-comparator architecture: one fixed-threshold monitor for VCC (3.08V) and a dedicated 0.62V reference comparator for PFI, enabling independent power-fail detection. Its reset generator holds RESET low for 140–300ms after VCC recovery, with immunity to sub-100ns MR glitches and guaranteed operation at VCC ≥ 1.0V.
Unlike non-A versions, the MAX6701TKA+T's WDO deasserts immediately when VCC, RST_IN1, or RST_IN2 rises above threshold-no timeout delay-yet latches low on watchdog overflow unless cleared by WDI edge or MR assertion. It lacks RST_IN1/RST_IN2 pins, confirming single-supply monitoring per its T-suffix (3.08V) and KA package designation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 3.08V (typ), ±3% over -40°C to +125°C - sets precise brownout detection point for +3.0V systems |
| Reset Timeout Period | 140ms (min), 300ms (max) - ensures µP initialization completes before release |
| Watchdog Timeout | 1.6s (typ), 0.96–2.52s over temperature - provides reliable software activity monitoring window |
| Power-Fail Input Threshold | 0.62V (typ), 6mV hysteresis - enables accurate early-warning detection via external resistor divider |
| Supply Current | 9–20µA at VCC < 3.6V - supports ultra-low-power battery-backed or energy-constrained designs |
| Operating Voltage Range | 1.2V to 5.5V - allows operation during deep brownout while maintaining reset integrity |
| Output Type | Active-low push-pull RESET and WDO - eliminates need for external pull-up resistors |
Pinout & Package
Package: 8-pin SOT23 (KA), -40°C to +125°C operating range, RoHS-compliant lead-free (+T suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 MR | Active-low manual reset input | CMOS-compatible input with 50kΩ internal pullup; forces reset when pulled low; clears WDO in A-version |
| 2 VCC | Supply voltage and primary reset monitor input | Powers internal circuitry and feeds fixed 3.08V threshold detector; valid down to 1.2V |
| 3 GND | Ground reference | Common return path for all analog and digital functions; required for accurate threshold sensing |
| 4 PFI | Power-fail comparator input | High-impedance (±200nA leakage) node tied to 0.62V internal reference; accepts external voltage divider |
| 5 PFO | Power-fail comparator output | Active-low open-drain output; asserts when PFI < 0.62V; sinks 200µA minimum at VCC ≥ 1.8V |
| 6 WDI | Watchdog timer input | Edge-sensitive input; 50ns minimum pulse width; clears watchdog on rising/falling edge |
| 7 RESET | Active-low reset output | Push-pull driver; VOL ≤ 0.3V at ISINK = 50µA; remains asserted for full timeout after VCC recovery |
| 8 WDO | Active-low watchdog output | Push-pull driver; latched low on timeout; deasserts instantly on WDI edge or MR low in A-version |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed reset validity to VCC = 1V | Ensures deterministic µP reset state even during severe brownout conditions |
| 140ms minimum reset timeout | Meets JEDEC JESD72 requirements for reliable processor initialization timing |
| Independent 0.62V power-fail comparator | Enables system-level early-warning shutdown without modifying main supply monitoring |
| 1.6s watchdog timeout with latch-on-overflow | Prevents spurious resets from transient software hangs while ensuring hard fault detection |
| Immunity to short VCC transients (<100ns) | Rejects ESD-induced supply noise that could falsely trigger reset in sensitive applications |
| Low 9–20µA quiescent current | Extends battery life in always-on monitoring circuits and reduces thermal load in sealed enclosures |
Applications
| Computers | Networking |
|---|---|
|
Use Scenario: Monitoring +3.3V I/O rail and +1.8V core supply in embedded network switches during AC brownouts. IC Role / Device Role / Timing Role: Primary supervisor for µP reset generation and secondary power-fail warning via PFI/PFO interface. Use Value: Prevents packet corruption by asserting reset before voltage collapse and triggering orderly buffer flush via PFO interrupt. |
Use Scenario: Ensuring clean boot sequence in 5G baseband processors subjected to rapid power cycling. IC Role / Device Role / Timing Role: Single-supply supervisor with manual reset override for field-service firmware updates. Use Value: Guarantees 140ms reset hold time regardless of VCC ramp rate, eliminating boot failures from marginal power supplies. |
| White Goods | Intelligent Instruments |
|
Use Scenario: Supervising microcontroller in smart refrigerator control board exposed to line sags from compressor startup. IC Role / Device Role / Timing Role: Critical µP power monitoring IC with watchdog timer to detect firmware lockups during defrost cycles. Use Value: Latched WDO output triggers forced reset via MR connection, recovering from hung states without user intervention. |
Use Scenario: Power sequencing and fault detection in portable gas analyzers with dual lithium battery inputs. IC Role / Device Role / Timing Role: Precision reset supervisor with 0.62V PFI threshold for detecting auxiliary supply failure. Use Value: Enables predictive shutdown by asserting PFO 100ms before main supply dropout, preserving sensor calibration data. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6705TKA+T | Includes adjustable PFI/PFO comparator but no RST_IN1/RST_IN2; same 3.08V VCC threshold and A-version WDO behavior | Supports dual-supply monitoring (VCC + one external rail) vs. MAX6701TKA+T's single-rail focus | Select MAX6705TKA+T if secondary voltage monitoring beyond VCC is required; otherwise MAX6701TKA+T minimizes BOM count |
| TPS3808G30DBVR | Fixed 3.0V threshold, 200ms reset timeout, no integrated watchdog or PFI/PFO; open-drain RESET only | Lacks power-fail warning and watchdog functions; requires external RC network for manual reset | Choose TPS3808G30DBVR only for cost-sensitive, functionally minimal reset-only applications where PFI/WDO are omitted |
Compared with MAX6705TKA+T, MAX6701TKA+T offers identical VCC supervision and A-version watchdog response but omits secondary rail monitoring-reducing design complexity where only primary supply oversight is needed. Against TPS3808G30DBVR, MAX6701TKA+T adds integrated watchdog, power-fail warning, and push-pull outputs-enabling robust, self-contained supervision without external components.
Availability
MAX6701TKA+T is available at Aetrix Electronics and suitable for critical µP power monitoring, intelligent instrumentation, and white goods applications requiring stable component supply across extended temperature ranges (-40°C to +125°C).
Supply support for MAX6701TKA+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, computing, and communications applications.
The MAX6701–MAX6708 family targets compact, reliable µP supervision in space-constrained systems, emphasizing low quiescent current, wide temperature operation, and integrated power-fail warning without external components.
FAQ
What is the exact reset threshold voltage for MAX6701TKA+T?
The MAX6701TKA+T has a nominal VCC reset threshold of 3.08V, with guaranteed limits of 2.97V (min) to 3.17V (max) over the full -40°C to +125°C temperature range. This corresponds to the "T" suffix in the part number and is optimized for +3.0V supply monitoring in industrial and networking equipment.
Does MAX6701TKA+T support manual reset functionality?
Yes, MAX6701TKA+T includes an active-low manual reset input (MR) with internal 50kΩ pullup to VCC. Pulling MR low forces a reset pulse for the full timeout period (140–300ms), and in the A-version, it also clears the latched WDO output-enabling hardware-triggered watchdog recovery without software intervention.
What is the watchdog timeout behavior of MAX6701TKA+T?
MAX6701TKA+T features a 1.6s typical watchdog timeout (0.96–2.52s over temperature). When WDI remains static beyond this period, WDO latches low. Unlike non-A versions, WDO deasserts immediately upon valid WDI edge or MR low-no timeout delay-making it responsive to real-time software activity changes.
Can MAX6701TKA+T monitor multiple supply voltages?
No, MAX6701TKA+T monitors only the VCC supply (3.08V threshold) and does not include RST_IN1 or RST_IN2 pins. It is designed for single-supply supervision. For triple-voltage monitoring, consider MAX6701AKA+T (which includes RST_IN1/RST_IN2) or MAX6705TKA+T (which adds PFI/PFO for secondary rail monitoring).
What package and environmental rating does MAX6701TKA+T use?
MAX6701TKA+T uses an 8-pin SOT23 package (KA code) with lead-free RoHS-compliant construction (+T suffix), rated for operation from -40°C to +125°C. It meets industrial-grade reliability requirements and is suitable for automotive under-hood adjacent applications where extended temperature stability is critical.
MAX6701TKA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Power Supply Monitor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 3.08V, 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
MAX6701TKA+T FAQ
1.How can I place an order for MAX6701TKA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6701TKA+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 MAX6701TKA+T reliable?
The price and inventory of MAX6701TKA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6701TKA+T is usually 5 days.
3.What payment methods are accepted for MAX6701TKA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6701TKA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6701TKA+T?
MAX6701TKA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6701TKA+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 MAX6701TKA+T?
For technical support, including MAX6701TKA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6701TKA+T requirements.
6.How does Aetrix verify that MAX6701TKA+T is sourced from the original manufacturer or authorized distributors?
All MAX6701TKA+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 MAX6701TKA+T meets industry standards.
7.What is the process for return or replacement of MAX6701TKA+T?
All MAX6701TKA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6701TKA+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 MAX6701TKA+T part is unused and in its original packaging.
Return procedure for MAX6701TKA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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