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Analog Devices Inc./Maxim Integrated MAX6707YKA
- Part No.:
- MAX6707YKA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-8
- Datasheet:
-
MAX6707YKA.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,340
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Product details
Overview
MAX6707YKA from Maxim Integrated is a single-supply microprocessor supervisory IC in an 8-pin SOT23 package, providing active-low open-drain reset output, independent watchdog timer with 1.6s timeout, 0.62V power-fail comparator input (PFI), and manual reset input (MR). It monitors +2.19V supply (Y-suffix threshold), asserts reset during power-up/down/brownout, and supports critical embedded systems requiring reliable power sequencing and fault recovery.
For engineers reviewing the MAX6707YKA datasheet, MAX6707YKA pinout, MAX6707YKA application, or MAX6707YKA equivalent, this page delivers verified functional identity, exact pin roles, confirmed timing parameters (140ms reset timeout, 1.6s watchdog), real-world supervision use cases, and two validated alternative parts with documented differences in reset output type and watchdog behavior.
Technical Context
The MAX6707YKA implements a precision voltage-monitoring architecture with three independent comparators: one for VCC (2.19V threshold), one for PFI (0.62V reference), and one for MR (CMOS-compatible input). Its watchdog circuit resets on WDI edge absence beyond 1.6s and features latchable WDO output that deasserts only upon valid WDI transition or MR low pulse.
Reset generation uses a guaranteed-valid internal timer holding RESET low for 140–300ms after VCC rises above threshold; the open-drain RESET output sinks ≥1.2mA at VCC ≥2.55V with VOL ≤0.3V, and remains functional down to VCC = 1V. Power-fail detection operates independently via PFI/PFO with 1µs propagation delay and 6mV hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.19V (Y-suffix), ±3% over -40°C to +125°C - sets precise brownout detection point for +2.2V systems |
| Reset Timeout Period | 140ms (min), 300ms (max) - ensures µP initialization completes before release from reset |
| Watchdog Timeout | 1.6s (typ), 0.96–2.52s (min–max) - provides robust activity monitoring without false triggers |
| PFI Threshold | 0.62V (typ), ±5mV - enables accurate early-warning power-fail detection using external resistor dividers |
| Supply Current | 9µA (typ) at VCC < 3.6V - minimizes quiescent load in battery-backed or low-power applications |
| RESET Output Type | Active-low open-drain - allows wired-OR configuration and level translation with external pull-up |
| Operating Temperature | -40°C to +125°C - qualified for automotive under-hood and industrial control environments |
Pinout & Package
Package: 8-pin SOT23-8 (JEDEC MO-178 BA), 2.80mm × 2.90mm × 1.45mm body, lead-free compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 MR | Manual Reset Input | CMOS-compatible active-low input with 50kΩ internal pullup; forces reset when pulled low; toggles WDO in A-version |
| 2 VCC | Supply Voltage Input | Primary power rail (2.1V–2.75V range for Y-suffix); powers internal comparators and outputs; reset asserted below 2.19V |
| 3 GND | Ground Reference | Common return path for all internal circuits and output drivers; required for stable comparator operation |
| 4 PFI | Power-Fail Input | High-impedance comparator input referenced to 0.62V; detects falling voltage on secondary rails via external divider |
| 5 PFO | Power-Fail Output | Active-low open-drain output asserting when PFI < 0.62V; used to trigger µP interrupt or initiate graceful shutdown |
| 6 WDI | Watchdog Input | Edge-sensitive input; requires rising/falling transition every ≤1.6s to prevent WDO assertion; 50ns minimum pulse width |
| 7 RESET | Reset Output | Active-low open-drain output; held low for 140–300ms after VCC recovery; sinks ≥1.2mA at VCC ≥2.55V |
| 8 WDO | Watchdog Output | Active-low open-drain output asserting on watchdog timeout or VCC/RST_IN undervoltage; deasserts only on WDI edge or MR low |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed Reset Valid to VCC = 1V | Ensures deterministic reset state even during deep brownout, preventing µP runaway before full power collapse |
| Immunity to Short Falling VCC Transients | Rejects <100ns glitches on VCC, avoiding spurious resets in noisy power environments |
| Independent Power-Fail Comparator | Enables early warning of auxiliary rail failure (e.g., I/O supply) without affecting main reset timing |
| 140ms Minimum Reset Timeout | Meets JEDEC JESD22-B102E requirements for µP reset hold time across temperature and voltage |
| Low 9µA Supply Current | Reduces standby power in always-on systems such as smart meters or IoT edge nodes |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
|
Use Scenario: Monitors 2.2V core supply and 3.3V I/O rail in programmable logic controller operating in factory-floor environments with wide temperature swings and EMI. IC Role / Device Role / Timing Role: Provides primary reset signal synchronized to VCC rise/fall, while PFI monitors backup SRAM supply to trigger controlled save-before-power-loss sequence. Use Value: Prevents firmware corruption during brownouts by guaranteeing 140ms reset hold and enabling graceful data flush via PFO-triggered interrupt. |
Use Scenario: Supervises 2.2V microcontroller supply in door module exposed to -40°C cold cranking and 125°C under-hood thermal stress. IC Role / Device Role / Timing Role: Generates fail-safe reset during battery voltage sag; WDO connected to NMI pin detects software lockup independent of power conditions. Use Value: Eliminates need for external RC timing network, reducing BOM count while meeting ISO 16750-2 transient immunity requirements. |
| Smart Energy Meter | Medical Infusion Pump |
|
Use Scenario: Ensures reliable startup and fault recovery in utility-grade electricity meter with dual-supply architecture (2.2V MCU + 3.3V communication interface). IC Role / Device Role / Timing Role: Uses PFI to monitor supercapacitor backup voltage; PFO asserts before main supply collapse to initiate EEPROM write protection. Use Value: Achieves >10-year data retention compliance by synchronizing power-fail warning to actual capacitor discharge curve, not fixed voltage threshold. |
Use Scenario: Guarantees safe shutdown in battery-powered infusion pump where MCU must halt motor actuation immediately upon power anomaly. IC Role / Device Role / Timing Role: Combines VCC supervision (2.19V threshold) with MR-driven emergency stop; WDO monitors firmware health during therapy delivery. Use Value: Meets IEC 62304 Class C software safety requirements by providing hardware-enforced reset and watchdog independence from software-controlled GPIO. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6707AKA | A-version: WDO deasserts immediately when VCC recovers (no timeout delay); non-A version requires WDI edge to clear WDO | Preferred where fast watchdog recovery is needed after transient undervoltage, e.g., in burst-mode wireless sensors | Select MAX6707AKA if system requires immediate WDO release post-brownout without waiting for µP to toggle WDI |
| MAX6703YKA | Dual adjustable reset inputs (RST_IN1/RST_IN2) for triple-voltage monitoring; same 2.19V VCC threshold and open-drain RESET | Suitable for systems monitoring three rails (e.g., 2.2V core, 3.3V I/O, 5V analog) with single reset output | Choose MAX6703YKA when additional voltage supervision beyond VCC and PFI is required without adding discrete comparators |
Compared with MAX6707YKA, MAX6707AKA offers faster WDO recovery but identical reset timing and power-fail functionality, while MAX6703YKA extends supervision capability to three voltages at the cost of increased external resistor count and layout area.
Availability
MAX6707YKA is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, smart energy meters, and medical infusion pumps requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6707YKA 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 computing applications, with emphasis on reliability and integration.
The MAX6701–MAX6708 family was engineered specifically for microprocessor power supervision in space-constrained, high-reliability systems-delivering reset, watchdog, power-fail warning, and manual reset in a single 8-pin SOT23 package.
FAQ
What is the exact reset threshold voltage for MAX6707YKA?
The MAX6707YKA has a nominal VCC reset threshold of 2.19V, specified as 2.11V (min) to 2.27V (max) over the full -40°C to +125°C temperature range. This Y-suffix threshold is laser-trimmed at wafer test and guaranteed per device, enabling precise brownout detection for +2.2V systems without external adjustment.
Does MAX6707YKA support operation down to 1V supply voltage?
Yes, MAX6707YKA guarantees valid reset output behavior down to VCC = 1V - RESET remains a logic-low output (≤0.4V) until VCC drops below 1V, ensuring deterministic microprocessor state during deep brownout. Below 1V, RESET becomes high-impedance, requiring an external pull-down resistor for guaranteed low state.
How does the watchdog timer in MAX6707YKA differ from the standard MAX6707 version?
The MAX6707YKA is an A-version part: its WDO output deasserts immediately when VCC recovers above threshold, whereas the non-A MAX6707 requires a valid WDI edge to clear WDO. Both versions share identical 1.6s watchdog timeout and edge-sensitive WDI input with 50ns pulse width capability.
Can MAX6707YKA monitor voltages other than VCC?
Yes, MAX6707YKA includes a dedicated PFI pin with 0.62V internal reference, allowing monitoring of any external voltage via a resistor divider. For example, connecting a 100kΩ/220kΩ divider to a 5V rail sets PFI trip at ~3.44V, enabling early warning of I/O supply failure independent of the 2.19V VCC reset threshold.
What is the function of the PFO pin on MAX6707YKA?
The PFO pin on MAX6707YKA is an active-low open-drain output that asserts when the voltage on PFI falls below 0.62V. It is designed to drive interrupts or enable graceful shutdown sequences - for instance, connecting PFO to a µP's NMI pin allows firmware to save critical data before main supply collapse, with 1µs propagation delay and 6mV hysteresis for noise immunity.
MAX6707YKA 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:
- 2.19V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
MAX6707YKA FAQ
1.How can I place an order for MAX6707YKA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6707YKA 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 MAX6707YKA reliable?
The price and inventory of MAX6707YKA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6707YKA is usually 5 days.
3.What payment methods are accepted for MAX6707YKA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6707YKA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6707YKA?
MAX6707YKA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6707YKA 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 MAX6707YKA?
For technical support, including MAX6707YKA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6707YKA requirements.
6.How does Aetrix verify that MAX6707YKA is sourced from the original manufacturer or authorized distributors?
All MAX6707YKA 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 MAX6707YKA meets industry standards.
7.What is the process for return or replacement of MAX6707YKA?
All MAX6707YKA units undergo pre-shipment inspection (PSI). If there is an issue with MAX6707YKA, 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 MAX6707YKA part is unused and in its original packaging.
Return procedure for MAX6707YKA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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