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Analog Devices Inc./Maxim Integrated MAX6741XKRVD3
- Part No.:
- MAX6741XKRVD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX6741XKRVD3.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,205
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Product details
Overview
The MAX6741XKRVD3 from Maxim Integrated is a dual-voltage microprocessor supervisor IC with push-pull reset output, VCC1 power-OK (POK1) output, and factory-trimmed reset thresholds of 2.925V (VCC1) and 2.188V (VCC2). It monitors two independent supply rails, asserts reset if either falls below its threshold, maintains reset for ≥150ms after recovery, and draws only 6µA supply current. It is used in multivoltage portable systems requiring precise power-supply sequencing.
For engineers reviewing the MAX6741XKRVD3 datasheet, MAX6741XKRVD3 pinout, MAX6741XKRVD3 application, or MAX6741XKRVD3 equivalent, key selection criteria include its dual fixed-threshold supervision, POK1 timing (37.5–75ms), SC70-5 package footprint, -40°C to +85°C operation, and compatibility with I/O-to-core power sequencing architectures.
Technical Context
The MAX6741XKRVD3 implements dual independent voltage monitoring channels with precision internal references (±1.5% typical threshold accuracy over temperature), a dedicated open-drain POK1 output that deasserts only after VCC1 exceeds 2.925V for ≥37.5ms, and a push-pull RESET output referenced to VCC1 with 0.4V VOL at 3.2mA sink. Its reset timeout is fixed at 150ms (D3 suffix), and it operates across VCC1 = 1.0–5.5V and VCC2 = 0.9–3.3V.
It features no manual reset input (MR pin absent), no RSTIN or PFI/PFO circuitry, and relies solely on VCC1 and VCC2 inputs for supervision. The POK1 output enables controlled turn-on of secondary supplies (e.g., VCC2 DC/DC converter) only after VCC1 stabilizes - a critical function in processors requiring I/O-before-core power-up sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.925V ±1.5% - sets primary supply valid level for POK1 assertion and reset release |
| VCC2 Threshold | 2.188V ±1.5% - defines secondary supply minimum for safe µP core operation |
| Reset Timeout | 150ms min - ensures µP remains held in reset long enough for full supply stabilization |
| POK1 Timeout | 37.5–75ms - controls delay before enabling downstream VCC2 regulator, preventing race conditions |
| Supply Current | 6µA max - enables battery-powered operation with negligible quiescent drain |
| Operating Temp | -40°C to +85°C - supports industrial and automotive-adjacent embedded applications |
| Package | 5-pin SC70 - 2.0mm × 1.25mm footprint ideal for space-constrained portable PCBs |
Pinout & Package
MAX6741XKRVD3 is housed in a 5-pin SC70-5 package (2.0mm × 1.25mm, 0.65mm pitch), with pins arranged as follows (top view): Pin 1 = RESET, Pin 2 = GND, Pin 3 = VCC2, Pin 4 = POK1, Pin 5 = VCC1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Push-pull active-low reset output | Drives µP reset pin directly without external pullup; sinks 3.2mA, sources 500µA at VCC1 |
| 2 - GND | Analog/digital ground reference | Common return for all internal comparators, timers, and output drivers |
| 3 - VCC2 | Secondary supply input (core rail) | Monitored against 2.188V threshold; must exceed threshold for reset release |
| 4 - POK1 | Open-drain active-high power-OK output | Signals VCC1 stability; requires external pullup to enable VCC2 sequencing control |
| 5 - VCC1 | Primary supply input (I/O rail) | Monitored against 2.925V threshold; powers internal circuitry and defines RESET/POK1 logic levels |
Key Features
| Feature | Design Value |
|---|---|
| Dual fixed-threshold supervision | Simultaneously monitors VCC1 (2.925V) and VCC2 (2.188V) with independent comparators and hysteresis |
| VCC1 Power-OK (POK1) output | Enables precise power sequencing by delaying VCC2 enable until VCC1 stabilizes for ≥37.5ms |
| 150ms reset timeout | Guarantees µP reset hold time sufficient for complete supply settling and oscillator startup |
| 6µA ultra-low supply current | Extends battery life in portable equipment without compromising supervision reliability |
| SC70-5 compact packaging | Reduces board area by >50% vs. SOT23-5 while maintaining thermal performance up to +85°C |
Applications
| Portable Power Management | Notebook System Sequencing |
|---|---|
Use Scenario: Battery-powered handheld device with separate 3.3V I/O and 2.5V core rails. IC Role / Device Role / Timing Role: MAX6741XKRVD3 supervises both rails and uses POK1 to gate the core DC/DC converter enable signal. Use Value: Prevents core logic corruption by ensuring I/O supply is stable before core power is applied. | Use Scenario: Notebook motherboard requiring strict I/O-before-core power-up order during cold start. IC Role / Device Role / Timing Role: MAX6741XKRVD3 monitors VCC1 (3.3V I/O) and VCC2 (1.8V core); POK1 triggers core regulator only after VCC1 meets 2.925V for ≥37.5ms. Use Value: Eliminates need for discrete RC timing networks or FPGA-based sequencing logic. |
| Industrial Controller Power Integrity | POS Terminal Dual-Rail Supervision |
Use Scenario: Programmable logic controller operating from unregulated 5V input with internal 3.3V and 1.2V LDOs. IC Role / Device Role / Timing Role: MAX6741XKRVD3 replaces two discrete supervisors, monitoring 3.3V (VCC1) and 1.2V (VCC2) with factory-set thresholds. Use Value: Reduces BOM count and layout complexity while guaranteeing coordinated reset assertion across both domains. | Use Scenario: Point-of-sale terminal with 5V main rail and 3.3V interface rail, powered from AC adapter or backup battery. IC Role / Device Role / Timing Role: MAX6741XKRVD3 asserts RESET if either rail dips below threshold during brownout; POK1 manages USB interface power enable. Use Value: Ensures clean shutdown and restart during transient line drops without software intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6744XKRVD3 | Identical thresholds (2.925V/2.188V), same D3 timeout, but push-pull POK1 instead of open-drain | Requires no external POK1 pullup resistor; better suited when driving CMOS inputs directly | Select MAX6744XKRVD3 if POK1 load is purely capacitive or CMOS, avoiding external pullup design overhead |
| TPS3808G33DBVR | Single-supply supervisor (3.3V only), no POK output, 200ms timeout, 1.5µA IQ | Lacks dual-rail monitoring and sequencing capability; suitable only for single-rail systems | Choose TPS3808G33DBVR only when supervising one rail and ultra-low IQ is prioritized over sequencing |
Compared with MAX6744XKRVD3, the MAX6741XKRVD3 requires an external POK1 pullup but offers greater flexibility in driving diverse loads; versus TPS3808G33DBVR, it provides essential dual-rail coordination and sequencing control unavailable in single-supply alternatives.
Availability
MAX6741XKRVD3 is available at Aetrix Electronics and suitable for portable electronics, notebook power management, and industrial controller designs requiring stable component supply, guaranteed -40°C to +85°C operation, and precise dual-rail sequencing.
Supply support for MAX6741XKRVD3 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 power, sensing, and interface applications.
The MAX6736–MAX6745 family was developed specifically for low-power, space-constrained multivoltage systems needing reliable reset generation and supply sequencing - especially in battery-operated and portable equipment.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6741XKRVD3?
The MAX6741XKRVD3 has factory-trimmed reset thresholds of 2.925V for VCC1 and 2.188V for VCC2, as indicated by the "RV" suffix in its part number. These values are specified over the full -40°C to +85°C temperature range with ±1.5% typical accuracy, and are used to determine when the RESET output is asserted or released based on supply rail behavior.
Does the MAX6741XKRVD3 include a manual reset (MR) input?
No, the MAX6741XKRVD3 does not include a manual reset (MR) input. Its pinout consists only of RESET, GND, VCC2, POK1, and VCC1 - omitting MR entirely. This distinguishes it from variants like MAX6736/MAX6737 and confirms its role as a dedicated dual-supply sequencer without operator-initiated reset capability.
What is the function and timing behavior of the POK1 output on the MAX6741XKRVD3?
The POK1 output on the MAX6741XKRVD3 is an open-drain active-high signal that indicates VCC1 stability. It remains low until VCC1 exceeds 2.925V for a minimum timeout period of 37.5ms (typical) to 75ms (max). Once satisfied, POK1 goes high (with external pullup) and can be used to enable a downstream regulator - a key feature for enforcing I/O-before-core power sequencing in the MAX6741XKRVD3.
Can the MAX6741XKRVD3 monitor voltages below 0.9V or above 5.0V?
No, the MAX6741XKRVD3 is specified to monitor VCC1 from 1.0V to 5.5V and VCC2 from 0.9V to 3.3V. Voltages below 0.9V on VCC2 or below 1.0V on VCC1 fall outside guaranteed operation per the Absolute Maximum Ratings and Electrical Characteristics tables. Operation outside these ranges may result in undefined reset behavior or damage.
Is the MAX6741XKRVD3 pin-compatible with other devices in the MAX6736–MAX6745 family?
No, the MAX6741XKRVD3 is not universally pin-compatible across the MAX6736–MAX6745 family. While all use the SC70-5 package, pin functions differ: MAX6741XKRVD3 assigns Pin 4 to POK1, whereas MAX6736 uses Pin 3 for MR and MAX6742 uses Pin 3 for PFI. Direct substitution requires verification of pin mapping, threshold configuration, and feature alignment - the MAX6741XKRVD3 is optimized specifically for POK-driven sequencing.
MAX6741XKRVD3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.575V, 2.625V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
MAX6741XKRVD3 FAQ
1.How can I place an order for MAX6741XKRVD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6741XKRVD3 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 MAX6741XKRVD3 reliable?
The price and inventory of MAX6741XKRVD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6741XKRVD3 is usually 5 days.
3.What payment methods are accepted for MAX6741XKRVD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6741XKRVD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6741XKRVD3?
MAX6741XKRVD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6741XKRVD3 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 MAX6741XKRVD3?
For technical support, including MAX6741XKRVD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6741XKRVD3 requirements.
6.How does Aetrix verify that MAX6741XKRVD3 is sourced from the original manufacturer or authorized distributors?
All MAX6741XKRVD3 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 MAX6741XKRVD3 meets industry standards.
7.What is the process for return or replacement of MAX6741XKRVD3?
All MAX6741XKRVD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6741XKRVD3, 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 MAX6741XKRVD3 part is unused and in its original packaging.
Return procedure for MAX6741XKRVD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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