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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:
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Product details
Overview
The MAX6741XKVRD3 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 (VTH1) and 2.188V (VTH2). It monitors I/O and core supply rails in portable systems, asserts reset when either supply drops below its threshold, maintains reset for ≥150ms after recovery, and consumes only 6µA typical supply current. Designed for power-supply sequencing in dual-rail processors.
For engineers reviewing the MAX6741XKVRD3 datasheet, MAX6741XKVRD3 pinout, MAX6741XKVRD3 application, or MAX6741XKVRD3 equivalent, key selection criteria include its SC70-5 package, POK1 timing (37.5–75ms), dual fixed-threshold supervision, -40°C to +85°C operation, and compatibility with battery-powered multivoltage systems requiring precise voltage sequencing.
Technical Context
The MAX6741XKVRD3 integrates two independent voltage comparators with precision internal references (0.488V bandgap-derived) to monitor VCC1 and VCC2 simultaneously. Its POK1 output is driven by a dedicated comparator and timer circuit that deasserts only after VCC1 exceeds VTH1 for ≥37.5ms - enabling controlled enablement of downstream VCC2 supplies.
Reset assertion is synchronized across both monitored rails: RESET remains low until both VCC1 ≥ VTH1 and VCC2 ≥ VTH2 are sustained for the full 150ms timeout period (tRP). The push-pull RESET output is referenced to VCC1 and drives high to ≥0.8×VCC1 at 800µA source current, eliminating need for external pullup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH1 / VTH2 | 2.925V / 2.188V factory-trimmed thresholds - enables direct monitoring of common 3.0V/2.2V or 2.9V/2.2V I/O-core supply pairs without external resistors. |
| Reset Timeout (tRP) | 150ms minimum - ensures µP remains held in reset long enough for stable power-up of dependent logic and memory. |
| POK1 Timeout (tPOKP) | 37.5–75ms - provides deterministic delay before enabling secondary supply, supporting strict power-up sequencing requirements. |
| Supply Current (ICC1) | 6µA typical - minimizes quiescent drain on battery or energy-harvested sources in always-on portable equipment. |
| Operating Temp | -40°C to +85°C - qualified for industrial and extended commercial environments including automotive infotainment and industrial controllers. |
| Package | 5-pin SC70-5 - 2.0mm × 1.25mm footprint saves PCB area in space-constrained handheld and wearable designs. |
Pinout & Package
Package: 5-pin SC70-5 (2.0mm × 1.25mm, 0.65mm pitch), moisture sensitivity level MSL3, RoHS-compliant lead-free option available (+T suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Push-pull active-low reset output | Drives high to ≥0.8×VCC1 (800µA), low to ≤0.4V (3.2mA); no external pullup required; directly interfaces µP reset pins. |
| 2 - GND | Ground reference | Common return for all internal comparators, timers, and output drivers; must be low-impedance connection to system ground plane. |
| 3 - VCC2 | Secondary supply input | Monitors core voltage rail (0.9V–3.3V range); internally compared against VTH2 = 2.188V; asserts reset if VCC2 < VTH2. |
| 4 - POK1 | Open-drain active-high power-OK output | Stays low until VCC1 ≥ VTH1 for ≥37.5ms; used to enable DC/DC converter for VCC2; requires external pullup resistor (typically 10kΩ to VCC1). |
| 5 - VCC1 | Primary supply input | Monitors I/O voltage rail (1.8V–5.0V range); internally compared against VTH1 = 2.925V; controls POK1 and primary reset path. |
Key Features
| Feature | Design Value |
|---|---|
| Dual fixed-threshold supervision | Eliminates external resistor networks for VCC1/VCC2 monitoring - reduces BOM count, layout area, and calibration uncertainty. |
| VCC1 Power-OK (POK1) output | Enables precise, timer-controlled sequencing of VCC2 supply - prevents core voltage ramp-up before I/O rail stabilization. |
| 150ms reset timeout (D3 option) | Guarantees sufficient hold time for µP internal state initialization and peripheral clock lock, even under marginal supply conditions. |
| 6µA supply current | Extends battery life in always-on applications such as GPS trackers and medical wearables where µP supervisors remain active during sleep modes. |
| SC70-5 package | Provides same board area as 0402 passives - ideal for ultra-compact modules where every 0.5mm² impacts mechanical form factor. |
Applications
| Power-Supply Sequencing in Dual-Rail Processors | Battery-Powered Portable Equipment |
|---|---|
Use Scenario: A dual-voltage SoC requires VCC_IO to stabilize before enabling VCC_CORE to prevent latch-up or configuration corruption. IC Role / Device Role / Timing Role: MAX6741XKVRD3 monitors VCC1 (3.0V I/O rail), asserts POK1 after 37.5ms stability, which enables VCC2 (1.2V core) DC/DC converter; RESET deasserts only after both rails remain valid for 150ms. Use Value: Ensures deterministic, repeatable power-up sequence without firmware intervention or external timing components. | Use Scenario: Handheld medical device uses coin-cell battery and must minimize standby current while guaranteeing reliable boot after battery insertion or wake-from-sleep. IC Role / Device Role / Timing Role: MAX6741XKVRD3 supervises 3.0V LDO output (VCC1) and 2.2V core regulator (VCC2); 6µA ICC1 extends shelf life; 150ms tRP accommodates slow battery voltage ramp. Use Value: Eliminates risk of brown-out resets during cold-start while adding <1µA to total system quiescent load. |
| Notebook Computer Voltage Monitoring | Industrial Controller with Multivoltage Rails |
Use Scenario: Notebook platform uses separate 3.3V I/O and 1.8V core supplies; BIOS requires clean reset signal only after both rails reach regulation. IC Role / Device Role / Timing Role: MAX6741XKVRD3 compares VCC1=3.3V against VTH1=2.925V and VCC2=1.8V against VTH2=2.188V - detects undervoltage on either rail and holds RESET until both recover for 150ms. Use Value: Prevents BIOS corruption due to partial rail collapse during thermal throttling or adapter disconnect events. | Use Scenario: Programmable logic controller monitors 24V field bus supply (via resistor divider) and 3.3V logic rail; must assert reset if either fails. IC Role / Device Role / Timing Role: MAX6741XKVRD3's VCC1 input monitors scaled 24V via external divider; VCC2 monitors native 3.3V; POK1 unused; RESET drives PLC reset controller with push-pull drive. Use Value: Single-chip solution replaces discrete supervisor + voltage divider + timing RC network - improves long-term accuracy and temperature stability. |
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 | Identical dual fixed-threshold (2.925V/2.188V) and D3 timeout, but features push-pull RESET instead of open-drain - no external pullup needed. | Same sequencing capability, but optimized for µPs with unidirectional reset inputs requiring active-drive high state. | Select MAX6744XKVRD3 when interfacing to µPs lacking internal pullup or requiring guaranteed high-level reset deassertion. |
| TPS3808G33DBVR | Single-supply supervisor (3.3V threshold only); no POK1 output; 200ms timeout; 1.1µA IQ; SOT-23-5 package. | Lacks dual-rail monitoring and sequencing support - suitable only for single-rail systems or where VCC2 monitoring is handled separately. | Choose TPS3808G33DBVR only for cost-sensitive single-supply applications where sequencing is unnecessary and ultra-low IQ is critical. |
Compared with MAX6744XKVRD3, the MAX6741XKVRD3 provides identical voltage thresholds and timing but uses open-drain RESET - requiring an external pullup but offering bidirectional reset pin compatibility. Versus TPS3808G33DBVR, it adds essential dual-rail supervision and POK1 sequencing at higher IQ, making it indispensable for multivoltage SoC platforms.
Availability
MAX6741XKVRD3 is available at Aetrix Electronics and suitable for portable/battery-powered equipment, notebook computers, and industrial controllers requiring stable component supply with guaranteed long-term availability and consistent parametric performance.
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 in industrial, automotive, and consumer systems.
The MAX6736–MAX6745 family was engineered specifically for low-power, space-constrained multivoltage systems - delivering dual/triple supply monitoring, programmable sequencing, and sub-10µA quiescent current in sub-3mm² packages.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6741XKVRD3?
The MAX6741XKVRD3 has factory-trimmed reset thresholds of 2.925V for VCC1 (VTH1) and 2.188V for VCC2 (VTH2), as indicated by the "VR" suffix per Table 1 in the datasheet. These values are guaranteed over -40°C to +85°C and include ±1.5% tolerance, enabling direct monitoring of standard 3.0V I/O and 2.2V core rails without external adjustment.
Does the MAX6741XKVRD3 require an external pullup resistor on the RESET pin?
No, the MAX6741XKVRD3 features a push-pull RESET output, so no external pullup resistor is required. Its RESET pin actively drives high to ≥0.8×VCC1 at 800µA source current and low to ≤0.4V at 3.2mA sink current - simplifying interface to µP reset inputs and eliminating pullup-related leakage or timing uncertainty.
How does the POK1 output function in the MAX6741XKVRD3, and what is its timing behavior?
The POK1 output on the MAX6741XKVRD3 is an open-drain active-high signal that remains low while VCC1 is below VTH1 = 2.925V. Once VCC1 exceeds VTH1, POK1 deasserts after a guaranteed 37.5–75ms timeout (tPOKP). This enables controlled turn-on of downstream supplies like VCC2 - ensuring sequencing integrity without external timers or logic.
What is the supply current consumption of the MAX6741XKVRD3, and how does it vary with voltage and temperature?
The MAX6741XKVRD3 draws 6µA typical supply current (ICC1) across its operating range. Data sheet Figure 1 shows ICC1 remains stable at ~6µA from -40°C to +85°C when VCC1 = 3.3V and VCC2 = 2.5V. Total current increases slightly at lower VCC1 (e.g., 10µA at VCC1 = 1.8V), but stays well below 15µA across all valid conditions - ideal for battery longevity.
Can the MAX6741XKVRD3 monitor a negative supply voltage?
No, the MAX6741XKVRD3 is not designed to directly monitor negative voltages. Its VCC1 and VCC2 inputs require positive supply connections (1.8V–5.0V and 0.9V–3.3V respectively). While the related MAX6742/MAX6745 include a PFI input usable for negative rail monitoring via external resistor networks, the MAX6741XKVRD3 lacks PFI/PFO functionality - it only provides VCC1, VCC2, RESET, POK1, and GND terminals.
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.
MAX6741XKVRD3 Tags
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MIC826SYMT-TR
Microchip Technology
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APX803S-31SA-7
Diodes Incorporated
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APX803L20-29SA-7
Diodes Incorporated
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V6340RSP3B+
EM Microelectronic
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EM6325CXSP5B-2.9+
EM Microelectronic
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MCP120T-300I/TT
Microchip Technology
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MCP130T-315I/TT
Microchip Technology
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MCP120T-475I/TT
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MCP111T-300E/TT
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MCP120T-315I/TT
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