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Analog Devices Inc./Maxim Integrated MAX6741XKVRD3+
- Part No.:
- MAX6741XKVRD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6741XKVRD3+.pdf
- Description:
- IC SUPERVISOR MPU
- Quantity:
- Payment:
- Shipping:
Inventory:906
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Product details
Overview
The MAX6741XKVRD3+ from Maxim Integrated is a dual-voltage microprocessor supervisor IC with two factory-trimmed reset thresholds (VTH1 = 2.925V, VTH2 = 2.188V), 150ms minimum reset timeout, open-drain RESET output, and VCC1 Power-OK (POK1) output - designed for power-supply sequencing in multivoltage systems such as portable computing and embedded controllers.
For engineers reviewing the MAX6741XKVRD3+ datasheet, MAX6741XKVRD3+ pinout, MAX6741XKVRD3+ application, or MAX6741XKVRD3+ equivalent, key selection factors include its SC70-5 package footprint, POK1 timing (37.5–75ms), dual-supply monitoring capability (VCC1/VCC2), and compatibility with I/O-to-core power sequencing requirements in battery-powered equipment.
Technical Context
The MAX6741XKVRD3+ implements independent voltage monitoring on VCC1 and VCC2 inputs using precision internal references, asserting RESET when either falls below its threshold and holding it low for ≥150ms after both recover. Its POK1 output deasserts only after VCC1 exceeds VTH1 for ≥37.5ms, enabling controlled enablement of downstream supplies.
It features an open-drain RESET output with 500nA leakage (not asserted), 0.4V VOL at 3.2mA sink, and supports external pullup; POK1 is open-drain active-high with identical leakage and drive specs. No manual reset input (MR) or RSTIN/PFI pins are present - confirmed by pin configuration and selector guide.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold (VTH1) | 2.925V ±0.075V (factory-trimmed; enables reliable reset assertion for 3.0V I/O rails) |
| VCC2 Threshold (VTH2) | 2.188V ±0.075V (factory-trimmed; matches common 2.2V core supply rails) |
| Reset Timeout (tRP) | 150–300ms (guaranteed minimum ensures µP reset hold time meets boot initialization requirements) |
| POK1 Timeout (tPOKP) | 37.5–75.0ms (controls delay before enabling secondary supply in sequencing applications) |
| Supply Current (ICC1) | 5–10µA (ultra-low quiescent current extends battery life in portable devices) |
| Operating Temp Range | -40°C to +85°C (supports industrial and extended commercial environments) |
| Package | 5-pin SC70 (1.6mm × 1.6mm footprint; saves PCB area vs. SOT23) |
Pinout & Package
Package: 5-pin SC70 (1.6mm × 1.6mm, 0.5mm pitch, thin-profile surface-mount).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Open-drain active-low reset output | Drives low during fault; requires external pullup; interfaces directly to µP reset pin |
| 2 - GND | Ground reference | Common return path for all internal circuits and external decoupling |
| 3 - VCC2 | Secondary supply monitor input | Monitors core rail (e.g., 2.2V); triggers reset if <2.188V |
| 4 - POK1 | Open-drain active-high Power-OK output | Signals VCC1 stability; used to enable VCC2 regulator after valid VCC1 |
| 5 - VCC1 | Primary supply monitor input | Monitors I/O rail (e.g., 3.0V); initiates POK1 assertion and reset if <2.925V |
Key Features
| Feature | Design Value |
|---|---|
| Dual fixed-voltage supervision | Simultaneous monitoring of VCC1 (2.925V) and VCC2 (2.188V) eliminates need for discrete comparators |
| VCC1 Power-OK (POK1) output | Enables precise power-up sequencing between I/O and core supplies without external logic |
| 150ms minimum reset timeout | Guarantees sufficient reset pulse width for reliable µP initialization across temperature |
| 6µA typical supply current | Reduces system standby power - critical for battery-operated GPS, POS, and PDA designs |
| SC70-5 package | Minimizes PCB real estate while maintaining thermal performance for high-density layouts |
Applications
| Power-Supply Sequencing | Battery-Powered Controllers |
|---|---|
Use Scenario: Dual-rail system requiring I/O supply (VCC1) to stabilize before enabling core supply (VCC2). IC Role / Device Role / Timing Role: MAX6741XKVRD3+ monitors VCC1 and asserts POK1 only after VCC1 exceeds 2.925V for ≥37.5ms, enabling VCC2 regulator via external MOSFET or enable pin. Use Value: Prevents core logic corruption during power-up by enforcing strict sequencing without additional timing components. | Use Scenario: Portable medical sensor with 3.0V I/O and 2.2V MCU core, operating from coin-cell battery. IC Role / Device Role / Timing Role: MAX6741XKVRD3+ continuously supervises both rails; asserts RESET if either drops due to battery sag or load transient. Use Value: Ultra-low 6µA ICC1 extends battery runtime while ensuring deterministic reset behavior under brownout conditions. |
| Notebook I/O Subsystem | Industrial Embedded Controller |
Use Scenario: Notebook chipset requiring clean reset during AC/DC adapter transitions and sleep/wake cycles. IC Role / Device Role / Timing Role: MAX6741XKVRD3+ detects VCC1 (3.0V I/O rail) and VCC2 (2.2V chipset core) faults independently; RESET remains asserted until both recover and timeout completes. Use Value: Eliminates spurious resets caused by asynchronous rail recovery, improving system reliability during dynamic power events. | Use Scenario: Programmable logic controller (PLC) module with isolated 3.0V I/O and 2.2V FPGA core supplies. IC Role / Device Role / Timing Role: MAX6741XKVRD3+ provides fail-safe reset signaling across wide temperature (-40°C to +85°C) and voltage ranges. Use Value: Factory-trimmed thresholds ensure consistent trip points without calibration, reducing BOM and test overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6744XKVRD3+ | Push-pull RESET output (vs. open-drain); same thresholds, POK1, and timing | Eliminates need for external RESET pullup resistor; not compatible with bidirectional µP reset pins | Select when board layout lacks space for pullup or µP reset pin is unidirectional input-only |
| TPS3808G125DBVR | Single-supply supervisor (1.25V threshold); no POK1; 200ms timeout; SOT-23-5 package | Lacks dual-rail monitoring and sequencing capability; requires separate ICs for VCC1/VCC2 | Select only for single-rail systems where POK1 and dual-threshold functions are unnecessary |
Compared with MAX6741XKVRD3+, the MAX6744XKVRD3+ simplifies RESET interface but sacrifices bidirectional µP compatibility, while the TPS3808G125DBVR reduces integration level - making MAX6741XKVRD3+ optimal for compact, sequenced dual-rail designs.
Availability
MAX6741XKVRD3+ is available at Aetrix Electronics and suitable for portable/battery-powered equipment, multivoltage systems, and notebook computers requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6741XKVRD3+ 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 power management, sensing, and interface applications.
The MAX6736–MAX6745 family delivers ultra-low-power dual/triple-voltage supervision for portable and multirail systems, emphasizing small footprint, factory-trimmed accuracy, and integrated sequencing features like POK1.
FAQ
What is the function of the POK1 pin on the MAX6741XKVRD3+?
The POK1 pin on the MAX6741XKVRD3+ is an open-drain active-high output that signals when the primary supply (VCC1) has exceeded its 2.925V threshold for at least 37.5ms. It remains low until this condition is met, then goes high to enable downstream circuitry - enabling precise power-up sequencing between I/O and core rails without external timers.
Does the MAX6741XKVRD3+ support manual reset functionality?
No, the MAX6741XKVRD3+ does not include a manual reset (MR) input. Its pinout (RESET, GND, VCC2, POK1, VCC1) confirms absence of MR - unlike MAX6736–MAX6739 variants. Reset is triggered solely by VCC1/VCC2 undervoltage conditions or power-on reset timeout.
What are the exact reset threshold voltages for MAX6741XKVRD3+?
The MAX6741XKVRD3+ has factory-trimmed reset thresholds of VTH1 = 2.925V (±0.075V) for VCC1 and VTH2 = 2.188V (±0.075V) for VCC2, per Tables 1 and 2 in the datasheet. These values are encoded in the "VR" suffix and apply across the full -40°C to +85°C operating range.
Can the MAX6741XKVRD3+ monitor negative supply voltages?
No, the MAX6741XKVRD3+ cannot directly monitor negative voltages. It lacks PFI/PFO pins (present only on MAX6742/MAX6745). Its inputs (VCC1, VCC2, RESET, POK1, GND) are rated for 0V to +6V - negative voltage monitoring requires a different variant or external level-shifting circuitry.
Is the MAX6741XKVRD3+ pin-compatible with other MAX67xx supervisors?
The MAX6741XKVRD3+ shares the 5-pin SC70 package with other MAX6736–MAX6745 variants but is not pin-compatible with all. Specifically, pin 3 is VCC2 (not MR or RSTIN), and pin 4 is POK1 (not PFI or PFO). Compatibility depends on matching pin function mapping - e.g., MAX6744XKVRD3+ uses same pinout but push-pull RESET.
MAX6741XKVRD3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX6741XKVRD3+ FAQ
1.How can I place an order for MAX6741XKVRD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6741XKVRD3+ 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 MAX6741XKVRD3+ reliable?
The price and inventory of MAX6741XKVRD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6741XKVRD3+ is usually 5 days.
3.What payment methods are accepted for MAX6741XKVRD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6741XKVRD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6741XKVRD3+?
MAX6741XKVRD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6741XKVRD3+ 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 MAX6741XKVRD3+?
For technical support, including MAX6741XKVRD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6741XKVRD3+ requirements.
6.How does Aetrix verify that MAX6741XKVRD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6741XKVRD3+ 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 MAX6741XKVRD3+ meets industry standards.
7.What is the process for return or replacement of MAX6741XKVRD3+?
All MAX6741XKVRD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6741XKVRD3+, 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 MAX6741XKVRD3+ part is unused and in its original packaging.
Return procedure for MAX6741XKVRD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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