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Analog Devices Inc./Maxim Integrated MAX6741XKWTD3+
- Part No.:
- MAX6741XKWTD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6741XKWTD3+.pdf
- Description:
- IC SUPERVISOR MPU
- Quantity:
- Payment:
- Shipping:
Inventory:1,457
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Product details
Overview
MAX6741XKWTD3+ from Maxim Integrated is a dual-voltage microprocessor supervisor IC with two factory-trimmed reset thresholds (VTH1 = 1.665V, VTH2 = 3.075V), 150ms minimum reset timeout, open-drain RESET output, and VCC1 power-OK (POK1) output - designed for precise power-supply sequencing in multivoltage systems.
For engineers reviewing the MAX6741XKWTD3+ datasheet, MAX6741XKWTD3+ pinout, MAX6741XKWTD3+ application, or MAX6741XKWTD3+ equivalent, this device delivers verified dual-rail monitoring, POK-driven sequencing control, low 6µA quiescent current, SC70-5 packaging, and -40°C to +85°C industrial temperature operation.
Technical Context
The MAX6741XKWTD3+ monitors VCC1 (I/O supply) and VCC2 (core supply) independently using precision bandgap references, asserting RESET when either falls below its threshold and maintaining it for ≥150ms after both recover. Its dedicated POK1 output deasserts only after VCC1 exceeds 1.665V for ≥37.5ms, enabling controlled enablement of downstream regulators.
It features an open-drain RESET with internal 50kΩ pullup to VCC1 (supporting manual reset detect), no MR pin (unlike MAX6736–MAX6739), and operates with VCC1 from 1.2V to 5.5V and VCC2 from 0.9V to 3.3V - all within a single 5-pin SC70 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold (VTH1) | 1.665V ±2.5% - factory-trimmed for reliable I/O supply monitoring at 1.8V nominal rails |
| VCC2 Threshold (VTH2) | 3.075V ±2.5% - factory-trimmed for core supply monitoring at 3.3V nominal rails |
| Reset Timeout (tRP) | 150ms min - ensures µP remains held in reset long enough for stable power recovery |
| POK1 Timeout (tPOKP) | 37.5ms min - guarantees VCC1 stability before enabling VCC2 regulator via POK1 signal |
| Supply Current (ICC1) | 6µA typical at +25°C - enables battery-backed and portable applications without compromising runtime |
| Operating Temp Range | -40°C to +85°C - qualified for industrial and automotive under-hood environments |
| Package | 5-pin SC70 (2.0mm × 1.25mm × 0.9mm) - ultra-compact footprint for space-constrained PCBs |
Pinout & Package
MAX6741XKWTD3+ uses a 5-pin SC70-5 package with exposed pad (no thermal pad connection required). Pin 1 is RESET, Pin 2 is GND, Pin 3 is VCC2, Pin 4 is POK1, Pin 5 is VCC1 - confirmed per Maxim's Pin Configurations diagram (page 15) and Pin Description table (page 8).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Open-drain active-low reset output | Asserts low on VCC1/VCC2 fault; includes internal 50kΩ pullup to VCC1 for manual reset detect functionality |
| 2 - GND | Ground reference | Common return for all internal comparators, timers, and outputs; must be low-impedance |
| 3 - VCC2 | Core supply voltage input | Monitored against 3.075V threshold; powers internal core logic and VCC2 comparator |
| 4 - POK1 | VCC1 power-OK open-drain output | Active-high (pulled high externally); asserts high only after VCC1 > 1.665V for ≥37.5ms - used to sequence VCC2 regulator enable |
| 5 - VCC1 | I/O supply voltage input | Monitored against 1.665V threshold; powers primary supervisory circuitry and internal pullups |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous VCC1 (1.665V) and VCC2 (3.075V) supervision with separate comparators and hysteresis |
| VCC1 Power-OK (POK1) output | Enables precise power-up sequencing: VCC2 regulator can be enabled only after VCC1 stabilizes for ≥37.5ms |
| Manual reset detect via RESET pin | Internal 50kΩ pullup to VCC1 allows direct pushbutton-to-GND connection on RESET - no external components needed |
| Ultra-low quiescent current | 6µA typical ICC1 supports >10-year battery life in always-on monitoring applications (e.g., smart sensors) |
| SC70-5 package | 2.0mm × 1.25mm footprint saves >60% board area vs. SOT23-5, critical for wearables and IoT edge nodes |
Applications
| Power-Supply Sequencing | Portable Multivoltage Systems |
|---|---|
Use Scenario: Dual-rail processor (e.g., ARM Cortex-A series) requiring I/O supply (1.8V) to power up before core supply (3.3V). IC Role / Device Role / Timing Role: MAX6741XKWTD3+ monitors VCC1 (1.8V rail), asserts POK1 only after stable 1.665V detection for 37.5ms, then enables VCC2 regulator. Use Value: Prevents latch-up and boot failure by enforcing strict VCC1→VCC2 power-up order without external timing circuitry. |
Use Scenario: Handheld medical monitor with coin-cell backup, operating from 1.8V I/O and 3.3V analog subsystem rails. IC Role / Device Role / Timing Role: Supervises both rails continuously; RESET holds µP during brownout; 6µA ICC1 extends battery life. Use Value: Eliminates need for discrete supervisors or RC timers, reducing BOM count and PCB area while guaranteeing safe reset behavior. |
| Industrial Controller Reset Management | POS Terminal Power Integrity |
Use Scenario: PLC I/O module subject to 12V DC input fluctuations causing 3.3V/1.8V rail instability. IC Role / Device Role / Timing Role: Detects dips on VCC1 (1.8V) and VCC2 (3.3V); asserts RESET for ≥150ms to ensure firmware reload completes. Use Value: Guarantees deterministic recovery from transient faults - no spurious resets due to <150ms glitches (per toc05 graph). |
Use Scenario: Point-of-sale terminal with USB-powered 5V input converted to 3.3V/1.8V rails, requiring fail-safe shutdown on AC loss. IC Role / Device Role / Timing Role: Uses POK1 to gate VCC2 enable; RESET halts processor if either rail collapses during transaction. Use Value: Enables atomic transaction rollback and EEPROM write protection before power loss - prevents data corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6744XKTWD3+ | Push-pull RESET output (vs. open-drain); identical VTH1/VTH2 thresholds and POK1 functionality | Requires no external pullup on RESET; incompatible with bidirectional µP reset pins without series resistor | Select when driving CMOS inputs directly or when manual reset detect is not needed |
| TPS3808G16DBVR | Single-supply supervisor (monitors only VCC); no POK output; 200ms timeout; 1.6V threshold option | Lacks dual-rail monitoring and sequencing capability; requires additional IC for VCC2 supervision | Select only for single-rail systems where POK-based sequencing is unnecessary |
Compared with MAX6744XKTWD3+, the MAX6741XKWTD3+ offers open-drain RESET with integrated manual reset detect - simplifying pushbutton interface but requiring external POK1 pullup. Versus TPS3808G16DBVR, it provides true dual-rail supervision and hardware-enforced sequencing, eliminating system-level timing design risk.
Availability
MAX6741XKWTD3+ is available at Aetrix Electronics and suitable for power-supply sequencing, portable multivoltage systems, and industrial controller reset management requiring stable component supply, lead-free compliance, and guaranteed -40°C to +85°C operation.
Supply support for MAX6741XKWTD3+ 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, sensing, and connectivity applications - with deep expertise in supervisory circuits and low-power system management.
The MAX6736–MAX6745 family was engineered specifically for compact, battery-sensitive multivoltage systems requiring accurate dual/triple-rail monitoring, sequencing control, and sub-10µA quiescent current - targeting portable, industrial, and computing applications.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on MAX6741XKWTD3+?
The MAX6741XKWTD3+ has factory-trimmed reset thresholds of VTH1 = 1.665V for VCC1 and VTH2 = 3.075V for VCC2, with ±2.5% tolerance over -40°C to +85°C. These values are fixed by the "W" and "T" suffixes per Maxim's Table 1 and are verified in production testing - no external adjustment is possible.
Does MAX6741XKWTD3+ include a manual reset input (MR) pin?
No, the MAX6741XKWTD3+ does not have a dedicated MR pin. Instead, it implements manual reset detect via the open-drain RESET pin, which includes an internal 50kΩ pullup to VCC1 - allowing a momentary switch from RESET to GND to assert reset without adding external components.
How is the POK1 output used in power-supply sequencing with MAX6741XKWTD3+?
The POK1 output on MAX6741XKWTD3+ is an open-drain active-high signal that goes high only after VCC1 exceeds 1.665V for ≥37.5ms. It is typically pulled up to VCC1 or VCC2 externally and used to enable the VCC2 regulator - ensuring I/O supply stability before core supply activation.
What is the reset timeout period for MAX6741XKWTD3+ and how is it determined?
The MAX6741XKWTD3+ has a minimum reset timeout period of 150ms (D3 suffix), guaranteed over temperature. This period starts after both VCC1 and VCC2 exceed their thresholds and ensures the microprocessor remains held in reset long enough for full power stabilization and clock settling before release.
Is MAX6741XKWTD3+ compatible with bidirectional microprocessor reset pins?
Yes - the open-drain RESET output of MAX6741XKWTD3+ is compatible with bidirectional µP reset I/O pins. To avoid contention, connect a 4.7kΩ series resistor between RESET and the µP pin, as recommended in Maxim's Figure 5 - enabling safe bidirectional communication without logic conflicts.
MAX6741XKWTD3+ 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:
- -
MAX6741XKWTD3+ FAQ
1.How can I place an order for MAX6741XKWTD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6741XKWTD3+ 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 MAX6741XKWTD3+ reliable?
The price and inventory of MAX6741XKWTD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6741XKWTD3+ is usually 5 days.
3.What payment methods are accepted for MAX6741XKWTD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6741XKWTD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6741XKWTD3+?
MAX6741XKWTD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6741XKWTD3+ 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 MAX6741XKWTD3+?
For technical support, including MAX6741XKWTD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6741XKWTD3+ requirements.
6.How does Aetrix verify that MAX6741XKWTD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6741XKWTD3+ 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 MAX6741XKWTD3+ meets industry standards.
7.What is the process for return or replacement of MAX6741XKWTD3+?
All MAX6741XKWTD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6741XKWTD3+, 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 MAX6741XKWTD3+ part is unused and in its original packaging.
Return procedure for MAX6741XKWTD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6741XKWTD3+ Tags
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