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Analog Devices Inc./Maxim Integrated MAX6741XKYHD3+
- Part No.:
- MAX6741XKYHD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6741XKYHD3+.pdf
- Description:
- IC SUPERVISOR MPU
- Quantity:
- Payment:
- Shipping:
Inventory:1,500
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Product details
Overview
The MAX6741XKYHD3+ 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 2.188V (VTH1) and 1.575V (VTH2). It monitors primary I/O supply (VCC1) and secondary core supply (VCC2), asserts reset if either falls below its threshold, and maintains reset for ≥150ms after recovery. It is used in dual-rail power sequencing for portable processors requiring precise voltage monitoring and controlled startup.
For engineers reviewing the MAX6741XKYHD3+ datasheet, MAX6741XKYHD3+ pinout, MAX6741XKYHD3+ application, or MAX6741XKYHD3+ equivalent, key selection criteria include its SC70-5 package, 6µA quiescent current, POK1 timing (37.5–75ms), dual fixed-threshold supervision, and compatibility with battery-powered multivoltage systems requiring reliable power-up sequencing.
Technical Context
The MAX6741XKYHD3+ implements independent dual-supply monitoring with precision internal references (0.488V for RSTIN/PFI, scaled via external dividers) and a dedicated open-drain POK1 output referenced to VCC1. Its reset logic combines VCC1/VCC2 threshold detection, manual reset detect on RESET pin (with 50kΩ internal pullup), and automatic timeout control.
It features a 150ms minimum reset timeout (D3 suffix), POK1 assertion delay of 37.5–75ms after VCC1 exceeds VTH1, and operates across -40°C to +85°C. The device uses BiCMOS process (249 transistors) and guarantees valid RESET state while either VCC1 or VCC2 remains above 1.2V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH1 / VTH2 | 2.188V / 1.575V - factory-trimmed thresholds for VCC1 and VCC2 monitoring, enabling precise I/O-core supply sequencing |
| Reset Timeout (tRP) | 150ms min - ensures µP remains held in reset long enough for stable power rail settling before release |
| POK1 Timeout (tPOKP) | 37.5–75ms - controls delay before enabling downstream VCC2 regulator, supporting safe power-up order |
| Supply Current (ICC1) | 5–10µA - ultra-low quiescent draw critical for battery life in portable equipment |
| Operating Temp | -40°C to +85°C - industrial-grade temperature range suitable for embedded and automotive-adjacent applications |
| Package | 5-pin SC70 - 2.0mm × 2.1mm footprint ideal for space-constrained PCBs in handheld devices |
| RESET Output Type | Push-pull - eliminates need for external pullup resistor, simplifying interface to µP reset input |
Pinout & Package
MAX6741XKYHD3+ is housed in a 5-pin SC70-5 package (2.0mm × 2.1mm, 0.65mm pitch), optimized for high-density portable designs.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull reset output; asserted when VCC1 < 2.188V or VCC2 < 1.575V; internally pulled up to VCC1 (50kΩ) for manual reset detect |
| 2 | GND | Analog/digital ground reference for all internal comparators and timing circuits |
| 3 | VCC2 | Secondary supply input (core voltage); monitored against 1.575V threshold |
| 4 | POK1 | Open-drain active-high power-OK output; goes high only after VCC1 exceeds 2.188V for ≥37.5ms - used to enable VCC2 regulator |
| 5 | VCC1 | Primary supply input (I/O voltage); monitored against 2.188V threshold and powers internal circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Dual fixed-threshold supervision | Simultaneously monitors VCC1 (2.188V) and VCC2 (1.575V) with ±1.5% accuracy over temp - enables robust dual-rail validation without external components |
| VCC1 Power-OK (POK1) output | Provides sequenced enable signal for downstream VCC2 regulator, eliminating need for discrete timing RC networks or additional supervisors |
| 150ms reset timeout (D3) | Guarantees sufficient hold time for processor initialization and clock stabilization after power rails reach regulation |
| 6µA total supply current | Reduces standby power consumption by >90% vs. legacy supervisors - extends battery runtime in always-on portable systems |
| SC70-5 package | Minimizes board area by >60% vs. SOT23-6, supporting compact designs in wearables, IoT sensors, and handheld medical devices |
Applications
| Portable Power Sequencing | Low-Power Microcontroller Supervision |
|---|---|
Use Scenario: Dual-rail system (3.3V I/O, 1.8V core) in a battery-powered GPS tracker requiring strict power-up order to prevent latch-up. IC Role / Device Role / Timing Role: MAX6741XKYHD3+ monitors VCC1 (3.3V) and VCC2 (1.8V), asserts RESET until both are stable, then releases RESET only after POK1 enables VCC2 regulator. Use Value: Prevents core logic corruption during brown-out by enforcing VCC1-first sequencing and guaranteeing ≥150ms reset hold time. | Use Scenario: Wearable health monitor with ARM Cortex-M0+ MCU operating from coin-cell battery. IC Role / Device Role / Timing Role: MAX6741XKYHD3+ supervises VCC1 (2.188V) and VCC2 (1.575V) rails, provides push-pull RESET compatible with bidirectional µP reset pins, and draws only 6µA in sleep mode. Use Value: Eliminates external pullup and reduces BOM count while extending battery life beyond 12 months in low-duty-cycle operation. |
| Industrial Sensor Node Boot Control | POS Terminal Voltage Validation |
Use Scenario: Wireless sensor node powered by DC-DC converter with variable output due to input voltage sag. IC Role / Device Role / Timing Role: MAX6741XKYHD3+ detects VCC1 drop below 2.188V and holds µP in reset until regulated supply recovers and sustains for ≥150ms. Use Value: Avoids firmware crash during transient line sags by rejecting sub-150ms dips - validated per IEC 61000-4-29 immunity requirements. | Use Scenario: Point-of-sale terminal with separate 5V I/O and 3.3V core supplies feeding FPGA and display controller. IC Role / Device Role / Timing Role: MAX6741XKYHD3+ validates both rails and uses POK1 to gate 3.3V core enable, ensuring I/O logic initializes before core logic. Use Value: Prevents configuration errors in FPGA startup sequence by enforcing deterministic power-up timing with 37.5ms POK1 delay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6744XKYHD3+ | Same dual-fixed-threshold architecture and SC70-5 package, but with push-pull RESET instead of open-drain POK1 - no POK1 output available | Lacks VCC1 power-OK functionality; cannot drive external enable signals for sequenced power supplies | Select when only reset assertion is needed and POK1-based sequencing is not required |
| TPS3808G18DBVR | Single-supply supervisor (1.8V threshold only); no VCC2 monitoring or POK1 output; 1.8V fixed threshold vs. MAX6741XKYHD3+'s 2.188V/1.575V dual thresholds | Cannot supervise dual rails or support power sequencing - requires additional ICs for full functionality | Select only for single-rail systems where cost-per-function is prioritized over integration |
Compared with MAX6744XKYHD3+, the MAX6741XKYHD3+ adds POK1 for sequencing but sacrifices push-pull RESET; versus TPS3808G18DBVR, it delivers integrated dual-rail monitoring and sequencing capability at higher component-level integration, reducing total solution size and BOM count.
Availability
MAX6741XKYHD3+ is available at Aetrix Electronics and suitable for portable/battery-powered equipment, multivoltage systems, and notebook computers requiring stable component supply and guaranteed long-term availability.
Supply support for MAX6741XKYHD3+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX6736–MAX6745 family was designed specifically for low-power, space-constrained multivoltage systems needing precise reset timing, power sequencing, and extended battery life - targeting portable computing, handheld instrumentation, and IoT edge nodes.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6741XKYHD3+?
The MAX6741XKYHD3+ has factory-trimmed reset thresholds of 2.188V for VCC1 and 1.575V for VCC2, as indicated by the "YH" suffix per Table 1 in the datasheet. These values are specified over the full -40°C to +85°C temperature range with ±1.5% tolerance, enabling accurate dual-rail validation without external calibration.
Does the MAX6741XKYHD3+ provide a power-OK (POK) output, and how is it used?
Yes, the MAX6741XKYHD3+ provides an open-drain POK1 output on pin 4. It remains low while VCC1 is below 2.188V, then transitions high after VCC1 exceeds that threshold for 37.5–75ms. This signal is commonly used to enable a downstream VCC2 regulator, enforcing strict I/O-before-core power sequencing in dual-supply processors.
What is the reset timeout period for the MAX6741XKYHD3+, and is it adjustable?
The MAX6741XKYHD3+ has a fixed minimum reset timeout period of 150ms, denoted by the "D3" suffix. This timeout begins after both VCC1 and VCC2 exceed their respective thresholds and is not user-adjustable. The actual duration varies from 150ms to 300ms depending on temperature and supply conditions.
Can the MAX6741XKYHD3+ be used with a microprocessor that has a bidirectional reset pin?
Yes, the MAX6741XKYHD3+'s push-pull RESET output is compatible with bidirectional µP reset pins. Unlike open-drain supervisors, it does not require an external pullup resistor and avoids contention issues. Direct connection is supported, though a 4.7kΩ series resistor may be added for added noise immunity per application note guidelines.
What package type and dimensions does the MAX6741XKYHD3+ use?
The MAX6741XKYHD3+ is packaged in a 5-pin SC70-5 (also labeled SC70) case measuring 2.0mm × 2.1mm with 0.65mm lead pitch. This ultra-small outline supports high-density PCB layouts in space-limited applications such as wearables, medical sensors, and compact industrial controllers.
MAX6741XKYHD3+ 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:
- -
MAX6741XKYHD3+ FAQ
1.How can I place an order for MAX6741XKYHD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6741XKYHD3+ 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 MAX6741XKYHD3+ reliable?
The price and inventory of MAX6741XKYHD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6741XKYHD3+ is usually 5 days.
3.What payment methods are accepted for MAX6741XKYHD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6741XKYHD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6741XKYHD3+?
MAX6741XKYHD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6741XKYHD3+ 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 MAX6741XKYHD3+?
For technical support, including MAX6741XKYHD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6741XKYHD3+ requirements.
6.How does Aetrix verify that MAX6741XKYHD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6741XKYHD3+ 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 MAX6741XKYHD3+ meets industry standards.
7.What is the process for return or replacement of MAX6741XKYHD3+?
All MAX6741XKYHD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6741XKYHD3+, 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 MAX6741XKYHD3+ part is unused and in its original packaging.
Return procedure for MAX6741XKYHD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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