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Analog Devices Inc./Maxim Integrated MAX6743XKZGD3
- Part No.:
- MAX6743XKZGD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6743XKZGD3.pdf
- Description:
- IC SUPERVISOR MPU
- Quantity:
- Payment:
- Shipping:
Inventory:1,880
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Product details
Overview
The MAX6743XKZGD3 from Maxim Integrated is a triple-voltage microprocessor supervisor IC with two factory-trimmed reset thresholds (VTH1 = 2.313V, VTH2 = 2.188V) and one adjustable RSTIN input (488mV threshold), push-pull active-low RESET output, no manual reset pin, and no power-fail or POK functions. It operates from 1.2V to 5.5V supply, draws only 6µA, and asserts reset for ≥150ms after all monitored supplies recover. It is used in multivoltage portable systems requiring precise, low-power supply monitoring.
For engineers reviewing the MAX6743XKZGD3 datasheet, MAX6743XKZGD3 pinout, MAX6743XKZGD3 application, or MAX6743XKZGD3 equivalent, key selection factors include its triple-supply monitoring capability, SC70-5 package footprint, 150ms reset timeout, push-pull output drive strength, and compatibility with core/I/O voltage sequencing in battery-powered controllers and embedded processors.
Technical Context
The MAX6743XKZGD3 implements independent comparators for VCC1 (2.313V threshold), VCC2 (2.188V threshold), and RSTIN (488mV internal reference), each with 0.5% hysteresis. Reset assertion occurs when any input falls below its threshold and remains asserted until all inputs exceed their thresholds for the full 150ms minimum timeout period.
Its push-pull RESET output drives high to ≥0.8×VCC1 (ISOURCE = 800µA) and low to ≤0.4V (ISINK = 3.2mA), eliminating need for external pullup. The device lacks MR, PFI/PFO, and POK1 pins-confirmed by pin configuration diagrams and selector guide-making it a dedicated triple-monitor without manual or power-fail control features.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.313V ±75mV (factory-trimmed; monitors I/O supply in 2.5V/1.8V systems) |
| VCC2 Threshold | 2.188V ±75mV (factory-trimmed; monitors core supply in dual-rail processors) |
| RSTIN Threshold | 488mV ±39mV (internal reference; enables monitoring of voltages down to 0.5V via resistor divider) |
| Reset Timeout | 150ms min (guaranteed hold time ensures µP initialization completes before release) |
| Supply Current | 6µA typical (enables >1-year battery life in always-on supervisory applications) |
| Operating Temp | -40°C to +85°C (qualified for industrial and extended-temperature embedded use) |
| Package | 5-pin SC70 (1.6mm × 1.6mm footprint; compatible with high-density portable PCB layouts) |
Pinout & Package
MAX6743XKZGD3 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, Pin 4 = RSTIN (adjustable threshold input), Pin 5 = VCC1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Push-pull active-low reset output | Drives µP reset pin directly; no external pullup required; sinks 3.2mA / sources 800µA |
| 2 - GND | Ground reference | Common return for all internal comparators and output stage; must be low-impedance |
| 3 - VCC2 | Secondary supply input | Monitors core voltage (e.g., 1.8V); threshold fixed at 2.188V; valid down to 0.9V |
| 4 - RSTIN | Adjustable reset threshold input | Accepts external resistor divider; triggers reset when voltage <488mV; leakage <10nA |
| 5 - VCC1 | Primary supply input | Monitors I/O voltage (e.g., 2.5V); threshold fixed at 2.313V; valid from 1.2V to 5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Triple independent voltage monitoring | Simultaneously supervises VCC1, VCC2, and RSTIN-enabling complete system power integrity check without external components |
| Factory-trimmed precision thresholds | VTH1 = 2.313V and VTH2 = 2.188V with ±75mV tolerance over -40°C to +85°C-eliminates calibration in production |
| Adjustable third threshold (RSTIN) | 488mV internal reference allows monitoring of auxiliary rails (e.g., 1.2V, 0.9V, or negative supplies) using two resistors |
| Push-pull RESET output | No external pullup needed; supports direct connection to bidirectional µP reset pins while avoiding logic contention |
| Ultra-low 6µA quiescent current | Enables integration into always-on battery-backed subsystems without compromising runtime |
Applications
| Mobile Device Power Management | Industrial Controller Supervision |
|---|---|
Use Scenario: Monitoring dual-core SoC with 2.5V I/O, 1.8V core, and 1.2V analog rail in handheld medical instrument. IC Role / Device Role / Timing Role: MAX6743XKZGD3 asserts RESET until all three rails stabilize post-power-up, ensuring deterministic boot sequence. Use Value: Prevents firmware corruption during brown-out by enforcing 150ms minimum reset hold time across all supplies. | Use Scenario: Supervising programmable logic controller with isolated 3.3V I/O, 2.5V FPGA core, and 5V sensor interface. IC Role / Device Role / Timing Role: MAX6743XKZGD3 monitors VCC1 (3.3V), VCC2 (2.5V), and RSTIN (5V via divider) to detect simultaneous rail faults. Use Value: Factory-trimmed thresholds eliminate field calibration; 6µA current extends uptime in battery-buffered backup mode. |
| POS Terminal Boot Integrity | GPS Module Voltage Sequencing |
Use Scenario: Ensuring reliable startup of point-of-sale terminal with 5V main, 3.3V MCU, and 1.8V display driver. IC Role / Device Role / Timing Role: MAX6743XKZGD3 uses VCC1=5V (threshold 2.313V), VCC2=3.3V (2.188V), RSTIN=1.8V (via divider) to validate all domains. Use Value: Push-pull RESET drives reset line without external components-reducing BOM count and layout area in space-constrained design. | Use Scenario: Validating power integrity in GPS receiver module with 3.3V RF front-end, 1.8V baseband, and 2.8V LNA bias. IC Role / Device Role / Timing Role: MAX6743XKZGD3 monitors VCC1 (3.3V), VCC2 (1.8V), and RSTIN (2.8V) to guarantee synchronized enable timing. Use Value: SC70-5 package fits tight RF shielded enclosures; 0.5% hysteresis prevents false resets from supply ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6740XKZGD3 | Open-drain RESET output with internal 50kΩ pullup to VCC1; includes manual reset detect function on RESET pin | Supports momentary pushbutton reset without dedicated MR pin; requires external pullup for high-impedance µP interfaces | Select when manual reset functionality is required and open-drain interface is acceptable |
| TPS3808G33DBVR | Dual-supply monitor (3.3V/1.8V fixed thresholds); no RSTIN input; 200ms timeout; 1.6µA supply current | Lacks third adjustable monitor channel; optimized for lower-power dual-rail systems only | Select when only two rails require supervision and ultra-low current (<2µA) is critical |
Compared with MAX6743XKZGD3, MAX6740XKZGD3 adds manual reset capability but requires external pullup for some µP interfaces, while TPS3808G33DBVR reduces current consumption by 73% but sacrifices the third monitoring channel and adjustable threshold flexibility.
Availability
MAX6743XKZGD3 is available at Aetrix Electronics and suitable for portable equipment, multivoltage systems, and notebook computers requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6743XKZGD3 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.
The MAX6736–MAX6745 family delivers low-power, space-efficient µP supervisors targeting battery-operated and multivoltage embedded systems where reliability and minimal board area are critical.
FAQ
What is the exact reset threshold voltage for VCC1 on the MAX6743XKZGD3?
The MAX6743XKZGD3 has a factory-trimmed VCC1 reset threshold of 2.313V, with ±75mV tolerance over the full -40°C to +85°C operating temperature range. This value is confirmed by Table 1 in the datasheet under suffix "ZG", and applies specifically to the MAX6743 variant-not inferred from other family members.
Does the MAX6743XKZGD3 include a manual reset (MR) input pin?
No, the MAX6743XKZGD3 does not include a manual reset input. Its pinout (RESET, GND, VCC2, RSTIN, VCC1) omits MR, and the selector guide explicitly lists "-" under the MANUAL RESET column for MAX6743. This distinguishes it from MAX6736–MAX6739 and MAX6740–MAX6742 variants.
What is the function of the RSTIN pin on the MAX6743XKZGD3?
The RSTIN pin on the MAX6743XKZGD3 provides an adjustable reset threshold input referenced to an internal 488mV comparator. When the voltage at RSTIN falls below this level, RESET is asserted. It supports monitoring of auxiliary supplies (e.g., 1.2V, 0.9V) via external resistor dividers, with input leakage <10nA to minimize power loss.
Is the RESET output of the MAX6743XKZGD3 push-pull or open-drain?
The RESET output of the MAX6743XKZGD3 is push-pull active-low. As confirmed in the Selector Guide and Pin Description, MAX6743 is marked with "X" under PUSH-PULL RESET and "-" under OPEN-DRAIN RESET. It drives high to ≥0.8×VCC1 and low to ≤0.4V, eliminating need for external pullup resistors.
What package type and dimensions does the MAX6743XKZGD3 use?
The MAX6743XKZGD3 uses a 5-pin SC70-5 package measuring 1.6mm × 1.6mm × 0.9mm (body height), with standard SC70 lead pitch of 0.65mm. The package drawing in the datasheet confirms this footprint, and the ordering information specifies "5 SC70-5" for all MAX6743 variants including MAX6743XKZGD3.
MAX6743XKZGD3 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:
- -
MAX6743XKZGD3 FAQ
1.How can I place an order for MAX6743XKZGD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6743XKZGD3 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 MAX6743XKZGD3 reliable?
The price and inventory of MAX6743XKZGD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6743XKZGD3 is usually 5 days.
3.What payment methods are accepted for MAX6743XKZGD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6743XKZGD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6743XKZGD3?
MAX6743XKZGD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6743XKZGD3 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 MAX6743XKZGD3?
For technical support, including MAX6743XKZGD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6743XKZGD3 requirements.
6.How does Aetrix verify that MAX6743XKZGD3 is sourced from the original manufacturer or authorized distributors?
All MAX6743XKZGD3 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 MAX6743XKZGD3 meets industry standards.
7.What is the process for return or replacement of MAX6743XKZGD3?
All MAX6743XKZGD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6743XKZGD3, 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 MAX6743XKZGD3 part is unused and in its original packaging.
Return procedure for MAX6743XKZGD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6743XKZGD3 Tags
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MIC826SYMT-TR
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