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Analog Devices Inc./Maxim Integrated MAX6741XKZGD3
- Part No.:
- MAX6741XKZGD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6741XKZGD3.pdf
- Description:
- IC SUPERVISOR MPU
- Quantity:
- Payment:
- Shipping:
Inventory:1,060
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Product details
Overview
The MAX6741XKZGD3 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 2.313V (VTH1) and 2.188V (VTH2), 150ms minimum reset timeout, 6µA supply current, and SC70-5 package - designed for power-supply sequencing in portable multivoltage systems.
For engineers reviewing the MAX6741XKZGD3 datasheet, MAX6741XKZGD3 pinout, MAX6741XKZGD3 application, or MAX6741XKZGD3 equivalent, this page delivers verified circuit role, factory-set dual-threshold monitoring, POK1 timing behavior, SC70 pin mapping, and real-world sequencing use cases - all confirmed from Maxim's official datasheet Rev 2 (12/05).
Technical Context
The MAX6741XKZGD3 monitors two independent supply rails (VCC1 and VCC2) using precision internal voltage references, asserting active-low RESET when either falls below its factory-trimmed threshold (2.313V and 2.188V respectively) and maintaining it for ≥150ms after both recover. Its dedicated open-drain POK1 output deasserts after VCC1 exceeds VTH1 for 37.5–75.0ms, enabling controlled power-up sequencing.
This device implements a deterministic timeout-based reset architecture with no external capacitor dependency, integrates MR debounce logic (tDEB = 37.5–75.0ms), and guarantees valid RESET state down to VCC1 ≥ 1.2V - supporting reliable operation across battery-voltage droop and cold-start conditions in space-constrained embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH1 / VTH2 | 2.313V / 2.188V - factory-trimmed dual thresholds enable precise I/O-core voltage coordination without external resistors. |
| Reset Timeout (tRP) | 150ms min - ensures µP initialization completes before release; fixed D3 suffix eliminates timing component variability. |
| POK1 Timeout (tPOKP) | 37.5–75.0ms - defines minimum VCC1 stabilization window before enabling downstream VCC2 regulator via POK1. |
| Supply Current (ICC1) | 5–10µA - ultra-low quiescent draw extends battery life in always-on portable equipment. |
| Operating Temp | -40°C to +85°C - qualified for industrial and automotive cabin-temperature environments. |
| Package | 5-pin SC70 - 2.0mm × 1.25mm footprint saves PCB area in handheld and wearable designs. |
| RESET Output Type | Push-pull - eliminates need for external pullup; drives high/low directly to VCC1 or GND. |
| POK1 Output Type | Open-drain - allows wired-OR logic and flexible pullup voltage selection (e.g., 3.3V or 5V rail). |
Pinout & Package
MAX6741XKZGD3 uses a 5-pin SC70-5 package (2.0mm × 1.25mm, 0.65mm pitch) with exposed pad for thermal performance. Pin 1 is RESET (push-pull active-low), Pin 2 is GND, Pin 3 is VCC2 (secondary supply input), Pin 4 is POK1 (open-drain active-high), and Pin 5 is VCC1 (primary supply input).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low reset output | Push-pull driver referenced to VCC1; asserts low on VCC1/VCC2 undervoltage or MR event; no external pullup needed. |
| 2 - GND | Ground reference | Common return for all internal comparators, timers, and outputs; must be low-impedance connection. |
| 3 - VCC2 | Secondary supply monitor input | Monitors core or auxiliary rail (0.9V–3.3V range); triggers RESET if <2.188V (VTH2) with hysteresis. |
| 4 - POK1 | VCC1 power-good indicator | Open-drain output asserted low until VCC1 >2.313V for ≥37.5ms; used to enable VCC2 regulator in sequencing. |
| 5 - VCC1 | Primary supply monitor input | Monitors I/O or main rail (1.8V–5.0V range); sets POK1 behavior and RESET assertion threshold (VTH1=2.313V). |
Key Features
| Feature | Design Value |
|---|---|
| Dual fixed-voltage supervision | Factory-trimmed 2.313V/2.188V thresholds eliminate calibration effort and resistor network errors. |
| VCC1 Power-OK (POK1) output | Enables precise power-up sequencing by gating VCC2 regulator enable only after VCC1 stabilizes. |
| 150ms reset timeout (D3) | Guaranteed minimum hold time ensures µP reset completion without external RC timing components. |
| 6µA supply current | Reduces standby power in battery-powered devices - critical for multi-year coin-cell operation. |
| SC70-5 package | 2.0mm × 1.25mm footprint supports miniaturized PCB layouts in wearables and IoT edge nodes. |
| -40°C to +85°C operation | Validated performance across industrial temperature range without derating or thermal margin loss. |
Applications
| Power-Supply Sequencing | Battery-Powered Portable Equipment |
|---|---|
Use Scenario: Dual-rail processor (e.g., ARM Cortex-A series) requiring I/O supply (VCC1) to stabilize before enabling core supply (VCC2). IC Role / Device Role / Timing Role: MAX6741XKZGD3 monitors VCC1 and asserts POK1 only after ≥37.5ms above 2.313V, enabling VCC2 regulator via POK1 pullup. Use Value: Prevents core logic corruption during power-up by enforcing strict VCC1→VCC2 enable order. |
Use Scenario: Handheld medical monitor with Li-ion battery, 3.3V I/O rail, and 1.2V core rail. IC Role / Device Role / Timing Role: MAX6741XKZGD3 supervises both rails and asserts RESET if battery drops below 2.313V (VCC1) or core regulator fails (VCC2 <2.188V). Use Value: 6µA ICC1 extends battery runtime while ensuring deterministic reset during brownout events. |
| Notebook Subsystem Monitoring | Industrial Controller Power Integrity |
Use Scenario: Embedded controller managing USB-C PD negotiation and system power states. IC Role / Device Role / Timing Role: MAX6741XKZGD3 uses POK1 to delay FPGA configuration until main 3.3V rail is stable, then releases RESET after VCC2 reaches 2.188V. Use Value: Eliminates need for discrete sequencer IC or FPGA-based timing logic - reduces BOM count and firmware complexity. |
Use Scenario: Programmable logic controller (PLC) module operating in factory ambient (-25°C to +70°C). IC Role / Device Role / Timing Role: MAX6741XKZGD3 provides fail-safe reset under voltage sags on 24V-to-3.3V and 24V-to-1.2V DC/DC outputs. Use Value: -40°C to +85°C qualification ensures reliable reset assertion even during cold startup or enclosure heating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6744XKZGD3 | Push-pull RESET output (same), but lacks POK1 - uses manual reset (MR) instead of power-good signaling. | Cannot perform VCC1-to-VCC2 sequencing; suitable only where MR-initiated reset suffices. | Select MAX6744XKZGD3 only if POK1 functionality is unnecessary and MR-driven reset is acceptable. |
| TPS3808G125DBVR | Single-supply supervisor (monitors one rail), 1.25V threshold, 200ms timeout, SOT-23-5 package. | Requires two devices to match dual-rail monitoring; no POK output or sequencing capability. | Use TPS3808G125DBVR only for single-rail applications or when redesigning for discrete supervision. |
Compared with MAX6741XKZGD3, MAX6744XKZGD3 omits sequencing support but retains identical dual-threshold accuracy and low power, while TPS3808G125DBVR requires duplication and adds board area - making MAX6741XKZGD3 optimal for integrated, space-constrained sequencing.
Availability
MAX6741XKZGD3 is available at Aetrix Electronics and suitable for portable/battery-powered equipment, multivoltage systems, and notebook computers requiring stable component supply and guaranteed -40°C to +85°C operation.
Supply support for MAX6741XKZGD3 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.
The MAX6736–MAX6745 family was engineered specifically for low-power, dual-/triple-voltage microprocessor supervision in space-constrained portable and industrial systems - emphasizing factory-trimmed accuracy, minimal quiescent current, and sequencing-ready outputs like POK1.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6741XKZGD3?
The MAX6741XKZGD3 has factory-trimmed reset thresholds of 2.313V for VCC1 (VTH1) and 2.188V for VCC2 (VTH2), as defined by the "ZG" suffix per Maxim's Table 1. These values are guaranteed over -40°C to +85°C with ±1.5% tolerance, eliminating need for external resistor networks or calibration.
Does the MAX6741XKZGD3 support power-supply sequencing, and how is it implemented?
Yes - the MAX6741XKZGD3 implements sequencing via its open-drain POK1 output, which remains low until VCC1 exceeds 2.313V for 37.5–75.0ms (tPOKP). This signal can directly enable a downstream VCC2 regulator, enforcing strict VCC1-before-VCC2 power-up order without external logic.
What is the function of the POK1 pin on the MAX6741XKZGD3, and what voltage level does it drive?
The POK1 pin on the MAX6741XKZGD3 is an open-drain active-high output that signals VCC1 validity. It pulls low by default and transitions high-impedance (requiring external pullup) only after VCC1 remains ≥2.313V for ≥37.5ms - enabling safe activation of dependent supplies like VCC2.
Is the MAX6741XKZGD3 pin-compatible with other devices in the MAX6736–MAX6745 family?
No - the MAX6741XKZGD3 uses a unique SC70-5 pinout with POK1 on Pin 4 and VCC2 on Pin 3, differing from MAX6736 (MR on Pin 3), MAX6742 (PFI/PFO on Pins 3/4), and MAX6740 (RSTIN on Pin 3). Direct replacement requires PCB layout revision.
What is the guaranteed supply current of the MAX6741XKZGD3 at 25°C and full temperature range?
The MAX6741XKZGD3 draws 5–10µA typical supply current (ICC1) at TA = +25°C and maintains ≤10µA across -40°C to +85°C per Maxim's datasheet Electrical Characteristics table - enabling multi-year operation on coin-cell batteries in always-on applications.
MAX6741XKZGD3 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:
- -
MAX6741XKZGD3 FAQ
1.How can I place an order for MAX6741XKZGD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6741XKZGD3 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 MAX6741XKZGD3 reliable?
The price and inventory of MAX6741XKZGD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6741XKZGD3 is usually 5 days.
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Once your MAX6741XKZGD3 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 MAX6741XKZGD3?
For technical support, including MAX6741XKZGD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6741XKZGD3 requirements.
6.How does Aetrix verify that MAX6741XKZGD3 is sourced from the original manufacturer or authorized distributors?
All MAX6741XKZGD3 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 MAX6741XKZGD3 meets industry standards.
7.What is the process for return or replacement of MAX6741XKZGD3?
All MAX6741XKZGD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6741XKZGD3, 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 MAX6741XKZGD3 part is unused and in its original packaging.
Return procedure for MAX6741XKZGD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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