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Analog Devices Inc./Maxim Integrated MAX6741XKSYD3+
- Part No.:
- MAX6741XKSYD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6741XKSYD3+.pdf
- Description:
- IC SUPERVISOR MPU
- Quantity:
- Payment:
- Shipping:
Inventory:437
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Product details
Overview
The MAX6741XKSYD3+ from Maxim Integrated is a dual-voltage microprocessor supervisor IC with push-pull RESET and open-drain VCC1 Power-OK (POK1) output, factory-trimmed reset thresholds of 2.925V (VCC1) and 2.188V (VCC2), 150ms minimum reset timeout, 6µA supply current, and SC70-5 package - designed for power-supply sequencing in multivoltage embedded systems.
For engineers reviewing the MAX6741XKSYD3+ datasheet, MAX6741XKSYD3+ pinout, MAX6741XKSYD3+ application, or MAX6741XKSYD3+ equivalent, key selection criteria include POK1 timing for I/O-to-core sequencing, dual fixed-threshold monitoring across 1.8V–5.0V/0.9V–3.3V rails, low-quiescent-current operation in portable equipment, and compatibility with bidirectional µP reset interfaces via series resistor.
Technical Context
The MAX6741XKSYD3+ implements independent dual-supply monitoring with precision internal voltage references for VCC1 and VCC2, asserting RESET when either falls below its factory-set threshold and maintaining it for ≥150ms after both recover. Its POK1 output deasserts only after VCC1 exceeds 2.925V for ≥37.5ms, enabling controlled enablement of downstream regulators.
It features push-pull RESET output referenced to VCC1 (no external pullup required), open-drain POK1 requiring external pullup, no manual reset input (MR absent), and no RSTIN or power-fail circuitry - distinguishing it from MAX6740/MAX6742 variants. Operating range is -40°C to +85°C with 1.2V–5.5V VCC1/VCC2 support.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.925V ±1.5% (factory-trimmed; enables reliable I/O rail supervision at 3.0V nominal) |
| VCC2 Threshold | 2.188V ±1.5% (factory-trimmed; supports core rail monitoring for 2.2V/2.5V systems) |
| Reset Timeout | 150ms min (D3 suffix; ensures µP reset hold time meets ARM/Cortex boot requirements) |
| POK1 Timeout | 37.5ms min (guarantees stable VCC1 before enabling VCC2 regulator in sequencing designs) |
| Supply Current | 6µA max (enables >10-year battery life in coin-cell–powered IoT edge nodes) |
| RESET Output Type | Push-pull (drives high/low directly; eliminates need for external pullup on µP reset line) |
| Package | SC70-5 (1.6mm × 1.6mm × 0.9mm; saves PCB area vs. SOT23-5 in space-constrained wearables) |
Pinout & Package
MAX6741XKSYD3+ uses a 5-pin SC70-5 package with exposed pad (not electrically connected). Pin 1 = RESET (push-pull active-low), Pin 2 = GND, Pin 3 = VCC2 (secondary supply input), Pin 4 = POK1 (open-drain active-high), Pin 5 = VCC1 (primary supply input).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low reset output | Push-pull driver referenced to VCC1; asserts low during fault and holds for 150ms post-recovery |
| 2 - GND | Ground reference | Common return for all internal comparators, timers, and output stages |
| 3 - VCC2 | Secondary supply monitor input | Monitors core rail (0.9V–3.3V); triggers RESET if <2.188V |
| 4 - POK1 | VCC1 power-good indicator | Open-drain active-high; goes high only after VCC1 ≥2.925V for ≥37.5ms |
| 5 - VCC1 | Primary supply monitor input | Monitors I/O rail (1.8V–5.0V); primary trigger for RESET and POK1 logic |
Key Features
| Feature | Design Value |
|---|---|
| Dual fixed-threshold supervision | Simultaneously monitors two independent rails (VCC1=2.925V, VCC2=2.188V) without external resistors or calibration |
| VCC1 Power-OK (POK1) output | Enables precise power-up sequencing: VCC2 regulator can be enabled only after VCC1 stabilizes for ≥37.5ms |
| 150ms reset timeout (D3) | Meets JEDEC JESD76-2 requirement for minimum reset assertion time in 32-bit microcontrollers |
| 6µA quiescent current | Reduces standby power by >90% vs. legacy supervisors, critical for battery-backed real-time clocks and sensors |
| SC70-5 footprint | Occupies 40% less board area than SOT23-5; compatible with standard pick-and-place and reflow processes |
Applications
| Power-Supply Sequencing in Dual-Rail Processors | Battery-Powered Embedded Controllers |
|---|---|
Use Scenario: A Cortex-M7 MCU requires I/O supply (3.0V) to stabilize before enabling core supply (2.2V) to prevent latch-up. IC Role / Device Role / Timing Role: MAX6741XKSYD3+ monitors VCC1 (3.0V rail) and VCC2 (2.2V rail), using POK1 to gate the VCC2 enable signal with 37.5ms delay. Use Value: Eliminates need for discrete RC timing or secondary supervisor, reducing BOM count and layout complexity. | Use Scenario: A portable medical sensor node uses a CR2032 coin cell and must operate >5 years in sleep mode. IC Role / Device Role / Timing Role: MAX6741XKSYD3+ supervises both MCU supply rails while drawing only 6µA, extending battery life beyond 10 years. Use Value: Achieves lowest known quiescent current among dual-supply supervisors with POK output, directly enabling ultra-low-power design goals. |
| Notebook Platform Voltage Monitoring | Industrial PLC I/O Module Supervision |
Use Scenario: A thin-client notebook motherboard powers multiple ASICs requiring coordinated 3.3V and 1.8V rail startup. IC Role / Device Role / Timing Role: MAX6741XKSYD3+ provides deterministic reset assertion and POK1-driven sequencing across two voltage domains. Use Value: Guarantees robust boot under varying load transients and temperature (-40°C to +85°C), improving field reliability. | Use Scenario: An industrial PLC I/O module must detect brownout on 24V DC input converted to 3.3V/1.8V rails. IC Role / Device Role / Timing Role: MAX6741XKSYD3+ monitors post-regulation 3.3V (VCC1) and 1.8V (VCC2) supplies, asserting RESET within 35µs of threshold breach. Use Value: Fast 35µs propagation delay prevents MCU corruption during fast-rail collapse events common in factory floor environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6744XKSYD3+ | Same thresholds (2.925V/2.188V), same D3 timeout, but push-pull RESET and POK1 - differs only in pinout (MR pin replaced by POK1) | No POK1 functionality; used where manual reset is required instead of sequencing | Select MAX6744XKSYD3+ only if MR input is needed; MAX6741XKSYD3+ is optimal when POK1 sequencing is mandatory |
| TPS3808G33DBVR | Single-supply supervisor (3.3V only), no POK output, 200ms timeout, 1.1µA IQ, SOT23-5 package | Cannot monitor dual rails or provide sequencing; suitable only for single-rail backup monitoring | Choose TPS3808G33DBVR only for cost-sensitive single-rail applications where sequencing is handled externally |
Compared with MAX6744XKSYD3+, the MAX6741XKSYD3+ trades manual reset capability for dedicated POK1 sequencing control - making it uniquely suited for I/O-first power-up architectures. Against TPS3808G33DBVR, it adds dual-rail monitoring and sequencing at higher IQ but enables system-level reliability unattainable with single-rail solutions.
Availability
MAX6741XKSYD3+ is available at Aetrix Electronics and suitable for power-supply sequencing, battery-powered embedded controllers, and industrial PLC I/O modules requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6741XKSYD3+ 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 connectivity in demanding industrial and portable applications.
The MAX6736–MAX6745 family delivers ultra-low-power dual/triple-supply supervision with integrated sequencing outputs like POK1, targeting space- and energy-constrained multivoltage systems such as wearables, IoT edge nodes, and portable instrumentation.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6741XKSYD3+?
The MAX6741XKSYD3+ has factory-trimmed reset thresholds of 2.925V for VCC1 and 2.188V for VCC2, as indicated by the "SY" suffix per Maxim's Table 1. These values are guaranteed over -40°C to +85°C with ±1.5% tolerance and require no external components for calibration.
Does the MAX6741XKSYD3+ include a manual reset (MR) input?
No, the MAX6741XKSYD3+ does not include a manual reset input. Its pinout (RESET, GND, VCC2, POK1, VCC1) omits MR - unlike MAX6736–MAX6739 or MAX6744. This design prioritizes POK1 sequencing functionality over user-initiated reset capability.
What is the function and timing behavior of the POK1 output on the MAX6741XKSYD3+?
The POK1 output on the MAX6741XKSYD3+ is an open-drain active-high signal that remains low until VCC1 exceeds 2.925V for a minimum of 37.5ms (tPOKP). It then goes high to indicate VCC1 stability and is used to enable downstream regulators - critical for safe dual-rail power-up sequencing.
Can the MAX6741XKSYD3+ monitor voltages outside the 0.9V–5.0V range?
No, the MAX6741XKSYD3+ is specified only for VCC1 monitoring from 1.8V to 5.0V and VCC2 from 0.9V to 3.3V. Its internal references and comparator design do not support sub-0.9V or >5.0V inputs. For wider ranges, consider adjustable-supervisors like MAX6738 or MAX6740 with RSTIN.
Is the RESET output of the MAX6741XKSYD3+ push-pull or open-drain?
The RESET output of the MAX6741XKSYD3+ is push-pull, meaning it actively drives both high and low states without requiring an external pullup resistor. This simplifies interface to µP reset pins - especially those with bidirectional I/O - and improves noise immunity compared to open-drain alternatives.
MAX6741XKSYD3+ 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:
- -
MAX6741XKSYD3+ FAQ
1.How can I place an order for MAX6741XKSYD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6741XKSYD3+ 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 MAX6741XKSYD3+ reliable?
The price and inventory of MAX6741XKSYD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6741XKSYD3+ is usually 5 days.
3.What payment methods are accepted for MAX6741XKSYD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6741XKSYD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6741XKSYD3+?
MAX6741XKSYD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6741XKSYD3+ 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 MAX6741XKSYD3+?
For technical support, including MAX6741XKSYD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6741XKSYD3+ requirements.
6.How does Aetrix verify that MAX6741XKSYD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6741XKSYD3+ 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 MAX6741XKSYD3+ meets industry standards.
7.What is the process for return or replacement of MAX6741XKSYD3+?
All MAX6741XKSYD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6741XKSYD3+, 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 MAX6741XKSYD3+ part is unused and in its original packaging.
Return procedure for MAX6741XKSYD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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