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Analog Devices Inc./Maxim Integrated MAX6727KARVD3+
- Part No.:
- MAX6727KARVD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-8
- Datasheet:
-
MAX6727KARVD3+.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,853
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Product details
Overview
MAX6727KARVD3+ from Maxim Integrated is a triple-voltage microprocessor supervisory circuit in an 8-pin SOT23 package, monitoring VCC1 (primary), VCC2 (secondary), and RSTIN (adjustable third supply) with factory-trimmed thresholds of 2.925V and 1.665V, 210ms minimum reset timeout, and open-drain dual RST outputs. It ensures reliable system reset during brownouts in battery-powered telecom and industrial embedded systems.
For engineers reviewing the MAX6727KARVD3+ datasheet, MAX6727KARVD3+ pinout, MAX6727KARVD3+ application, or MAX6727KARVD3+ equivalent, key selection factors include its dual open-drain reset outputs, 0.626V internal RSTIN reference for sub-1V monitoring, guaranteed reset validity down to VCC = 0.8V, and -40°C to +85°C operation in compact SOT23-8 packaging.
Technical Context
The MAX6727KARVD3+ integrates three independent voltage monitors: VCC1 (2.925V threshold), VCC2 (1.665V threshold), and RSTIN referenced to a 626mV internal bandgap. Its dual open-drain RST outputs share identical logic but drive separate pins (Pin 1 and Pin 4), enabling independent reset signaling to multiple subsystems without external logic.
It features a 210ms minimum reset timeout (D3 suffix), manual reset input (MR) with 50kΩ internal pullup, and watchdog timer with 35s startup and 1.12s normal mode-activated only on WDI transitions. No power-fail (PFI/PFO) or push-pull output functionality is included in this variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.925V (typ), factory-trimmed for stable 3.0V rail monitoring with ±1.5% tolerance over temperature |
| VCC2 Threshold | 1.665V (typ), factory-trimmed for reliable 1.8V core supply supervision |
| RSTIN Reference | 626mV internal reference enables adjustable third-supply monitoring down to 0.62V via resistor divider |
| Reset Timeout | 210ms (min), D3-suffix timing ensures sufficient hold time for full processor initialization |
| Supply Current | 14µA (typ at 3.6V), ultra-low quiescent draw extends battery life in portable equipment |
| Operating Temp | -40°C to +85°C, qualified for industrial and telecom environments without derating |
| Reset Validity | Guaranteed down to VCC1 or VCC2 = 0.8V, ensuring deterministic behavior during deep brownout |
Pinout & Package
MAX6727KARVD3+ uses an 8-pin SOT23-8 package (3.0mm × 1.6mm × 1.1mm body, 0.65mm pitch), optimized for high-density PCB layouts in space-constrained applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST (Output 1) | Active-low open-drain reset output; requires external pullup; asserts when any monitored supply falls below threshold |
| 2 | GND | Ground reference for all internal comparators and logic; must be low-impedance connection |
| 3 | MR | Active-low manual reset input; internal 50kΩ pullup to VCC1; 1µs minimum pulse width required |
| 4 | RST (Output 2) | Second active-low open-drain reset output, electrically identical to Pin 1 but physically isolated |
| 5 | VCC2 | Secondary supply input (1.665V threshold monitor); powers internal circuitry when > VCC1 |
| 6 | VCC1 | Primary supply input (2.925V threshold monitor); powers device when > VCC2; defines VOH for push-pull outputs (not used here) |
| 7 | RSTIN | Adjustable third-supply monitor input; referenced to 626mV internal reference; high-impedance (±25nA) |
| 8 | NC | No connect; internally unconnected; must remain floating or tied to GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent open-drain RST outputs | Enables simultaneous reset assertion to two isolated subsystems (e.g., MCU + FPGA) without shared bus contention |
| Factory-trimmed dual-threshold monitoring | Eliminates external resistor networks for VCC1 (2.925V) and VCC2 (1.665V), reducing BOM count and layout area |
| Adjustable third-supply monitor (RSTIN) | 626mV internal reference supports precise monitoring of auxiliary rails (e.g., 1.2V, 0.9V) using only two external resistors |
| 210ms minimum reset timeout (D3) | Ensures full processor boot sequence completion before release, compatible with ARM Cortex-M and RISC-V SoCs |
| Immunity to short VCC transients | Withstands ≤20µs negative glitches at ≥100mV overdrive without spurious reset, improving noise resilience in switching power supplies |
Applications
| Telecom Power Management | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Monitoring primary 3.3V backplane supply and secondary 1.8V FPGA core rail in remote radio units with battery backup. IC Role / Device Role / Timing Role: Triple-supply supervisor asserting dual RST signals to reset baseband processor and RF transceiver independently during brownout. Use Value: Prevents partial initialization failure by holding both subsystems in reset until both VCC1 and VCC2 stabilize above thresholds for ≥210ms. |
Use Scenario: Supervising 24V DC-DC converted 5V logic rail and isolated 3.3V microcontroller supply in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Dual open-drain RST outputs drive separate reset lines for main CPU and safety-monitoring co-processor. Use Value: Enables fault containment: if one subsystem fails, the other remains operational under independent reset control. |
| Portable Medical Devices | Battery-Powered IoT Gateways |
|
Use Scenario: Managing Li-ion battery discharge (VCC1 = 3.0V nominal) and regulated 1.2V sensor interface rail (VCC2) in handheld diagnostic tools. IC Role / Device Role / Timing Role: RSTIN monitors battery protection circuit output (0.62V reference) to trigger early shutdown before critical undervoltage. Use Value: Extends usable battery capacity by initiating graceful shutdown at 2.8V instead of waiting for full brownout. |
Use Scenario: Supervising 3.3V Wi-Fi SoC supply and 1.1V AI accelerator core rail in edge gateways powered by USB-C PD adapters. IC Role / Device Role / Timing Role: MR input connected to tamper-detection switch; dual RST outputs ensure coordinated reset of communication and compute domains. Use Value: Eliminates need for external OR-gate logic, reducing component count and PCB area in compact gateway modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6725KAURD3+ | 8-pin SOT23-8 with dual RST outputs: one open-drain (RST1), one push-pull (RST2); same VCC1/VCC2 thresholds and D3 timeout | Requires VCC2-referenced pullup for RST2; unsuitable where both outputs must be open-drain | Select MAX6725KAURD3+ only if mixed-output topology simplifies level-shifting to legacy 5V peripherals |
| TPS3808G33DBVR | Single-supply supervisor (3.3V threshold only); no RSTIN input; 200ms timeout; SOT23-6 package | Lacks triple-monitoring capability and dual-RST outputs; requires external circuitry for multi-rail systems | Choose TPS3808G33DBVR only for cost-sensitive single-rail designs where auxiliary monitoring is handled separately |
Compared with MAX6727KARVD3+, MAX6725KAURD3+ offers push-pull flexibility but sacrifices output symmetry, while TPS3808G33DBVR reduces integration at the cost of requiring external components for multi-rail supervision-making MAX6727KARVD3+ optimal for compact, triple-rail systems needing matched open-drain reset signaling.
Availability
MAX6727KARVD3+ is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, portable medical devices, and battery-powered IoT gateways requiring stable component supply across extended product lifecycles.
Supply support for MAX6727KARVD3+ 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, with expertise in power management and reliability-critical supervision.
The MAX6715–MAX6729 family delivers ultra-low-voltage, multi-rail supervision for space-constrained embedded systems-specifically engineered to replace discrete reset solutions in battery-operated and multivoltage equipment.
FAQ
What are the exact factory-trimmed reset thresholds for MAX6727KARVD3+?
The MAX6727KARVD3+ has factory-trimmed VCC1 and VCC2 reset thresholds of 2.925V (typ) and 1.665V (typ), respectively, corresponding to the 'R' and 'W' suffix codes per Maxim's Reset Voltage Threshold Suffix Guide. These values are guaranteed over -40°C to +85°C with ±1.5% tolerance and 20ppm/°C tempco.
Does MAX6727KARVD3+ support power-fail detection (PFI/PFO)?
No, MAX6727KARVD3+ does not include power-fail input (PFI) or output (PFO) functionality. Per Maxim's Selector Guide, only MAX6728/MAX6729 variants integrate PFI/PFO. The MAX6727KARVD3+ provides RSTIN for adjustable third-supply monitoring but lacks dedicated power-fail comparator circuitry.
How are the two RST outputs on MAX6727KARVD3+ configured and driven?
Both RST outputs (Pins 1 and 4) on MAX6727KARVD3+ are identical open-drain, active-low signals driven by the same internal logic. They assert simultaneously when VCC1, VCC2, or RSTIN falls below threshold-or when MR is pulled low-and remain asserted for the full 210ms timeout period. Each requires its own external pullup resistor.
What is the function of Pin 8 (NC) on MAX6727KARVD3+?
Pin 8 on MAX6727KARVD3+ is a no-connect (NC) terminal-internally unconnected and electrically isolated. Maxim's datasheet specifies it must remain floating or be tied to GND in PCB layout; connecting it to any active signal may cause undefined behavior or latch-up risk.
Can MAX6727KARVD3+ operate with VCC1 and VCC2 supplied from different sources?
Yes, MAX6727KARVD3+ is explicitly designed for independent VCC1 and VCC2 supplies: VCC1 powers the primary monitor and defines logic levels, while VCC2 powers the secondary monitor and RST2 output (though unused in this variant). The device guarantees valid reset operation as long as either supply remains ≥0.8V.
MAX6727KARVD3+ 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:
- 3
- Voltage - Threshold:
- 1.575V, 2.625V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
MAX6727KARVD3+ FAQ
1.How can I place an order for MAX6727KARVD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6727KARVD3+ 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 MAX6727KARVD3+ reliable?
The price and inventory of MAX6727KARVD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6727KARVD3+ is usually 5 days.
3.What payment methods are accepted for MAX6727KARVD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6727KARVD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6727KARVD3+?
MAX6727KARVD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6727KARVD3+ 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 MAX6727KARVD3+?
For technical support, including MAX6727KARVD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6727KARVD3+ requirements.
6.How does Aetrix verify that MAX6727KARVD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6727KARVD3+ 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 MAX6727KARVD3+ meets industry standards.
7.What is the process for return or replacement of MAX6727KARVD3+?
All MAX6727KARVD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6727KARVD3+, 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 MAX6727KARVD3+ part is unused and in its original packaging.
Return procedure for MAX6727KARVD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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