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Analog Devices Inc./Maxim Integrated MAX6740XKVHD7
- Part No.:
- MAX6740XKVHD7
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX6740XKVHD7.pdf
- Description:
- IC SUPERVISOR MPU
- Quantity:
- Payment:
- Shipping:
Inventory:4,526
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Product details
Overview
The MAX6740XKVHD7 from Maxim Integrated is a triple-voltage microprocessor supervisor IC with two factory-trimmed reset thresholds (VTH1 = 2.925V, VTH2 = 2.188V) and one adjustable RSTIN input (488mV threshold), open-drain RESET output, manual reset detect function, and 1200ms minimum reset timeout period. It monitors I/O and core supplies in portable multivoltage systems and asserts reset when any supply falls below its threshold.
For engineers reviewing the MAX6740XKVHD7 datasheet, MAX6740XKVHD7 pinout, MAX6740XKVHD7 application, or MAX6740XKVHD7 equivalent, this page provides verified circuit role, SC70-5 package mapping, confirmed 6µA supply current, precise reset timing (1200ms min), and validated alternative part options for dual/triple-supply monitoring designs.
Technical Context
The MAX6740XKVHD7 implements a triple-supply supervisory architecture with independent comparators for VCC1 (2.925V threshold), VCC2 (2.188V threshold), and RSTIN (488mV internal reference). Reset assertion is latched and held for a guaranteed 1200ms minimum timeout after all monitored voltages recover.
It features an open-drain RESET output with integrated 50kΩ pullup to VCC1 enabling manual reset detect functionality, and supports external resistor-divider networks on RSTIN to monitor voltages down to 0.5V. The device operates across -40°C to +85°C with 6µA total supply current at 3.3V/2.5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.925V ±2.5% - factory-trimmed for reliable I/O supply monitoring at 3.0V nominal rails |
| VCC2 Threshold | 2.188V ±2.5% - factory-trimmed for core supply monitoring at 2.2V nominal rails |
| RSTIN Threshold | 488mV ±1.5% - fixed internal reference enabling adjustable monitoring down to 0.5V via external divider |
| Reset Timeout | 1200ms min - ensures µP initialization completes before release in low-power embedded systems |
| Supply Current | 6µA max - enables battery life extension in portable equipment with continuous supervision |
| Operating Temp | -40°C to +85°C - qualified for industrial and automotive-adjacent embedded applications |
| Package | 5-pin SC70 - 2.0mm × 1.25mm footprint ideal for space-constrained PCB layouts |
Pinout & Package
The MAX6740XKVHD7 is housed in a 5-pin SC70-5 package with exposed pad (not electrically connected). Pin 1 is RESET (open-drain active-low), Pin 2 is GND, Pin 3 is VCC2, Pin 4 is RSTIN, and Pin 5 is VCC1. All pins are rated for -0.3V to +6V absolute maximum.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Open-drain active-low reset output | Asserts low when any monitored supply fails; includes internal 50kΩ pullup to VCC1 for manual reset detect |
| 2 - GND | Ground reference | Common return path for all internal comparators and output drivers; must be low-impedance |
| 3 - VCC2 | Secondary supply input | Monitors core voltage (2.188V threshold); valid operating range: 0.9V–3.3V |
| 4 - RSTIN | Adjustable reset threshold input | Accepts external divider to monitor third supply; 488mV comparator reference with ≤10nA input leakage |
| 5 - VCC1 | Primary supply input | Monitors I/O voltage (2.925V threshold); valid operating range: 1.8V–5.0V |
Key Features
| Feature | Design Value |
|---|---|
| Triple-supply monitoring | Simultaneously supervises VCC1 (2.925V), VCC2 (2.188V), and RSTIN (0.488V reference) - eliminates need for three discrete supervisors |
| Manual reset detect | RESET output doubles as MR input via internal 50kΩ pullup - enables pushbutton reset without external components |
| Low quiescent current | 6µA max ICC - reduces standby power in battery-powered devices such as GPS and PDAs |
| SC70-5 package | 2.0mm × 1.25mm footprint - saves >60% board area vs. SOT23-6 while maintaining 500mW thermal dissipation |
| Transient immunity | Immune to <35µs transients at 100mV overdrive - prevents spurious resets during power rail noise events |
Applications
| Portable Power Management | Multivoltage Processor Supervision |
|---|---|
Use Scenario: Battery-powered handheld devices requiring long runtime and reliable cold-start behavior under varying load conditions. IC Role / Device Role / Timing Role: Triple-supply supervisor asserting reset if main I/O rail (VCC1), core rail (VCC2), or auxiliary rail (RSTIN) drops below threshold. Use Value: 6µA supply current extends battery life; 1200ms timeout ensures full µP boot sequence completion before release. | Use Scenario: Notebook computers with separate 3.0V I/O and 2.2V core supplies needing coordinated power-up sequencing. IC Role / Device Role / Timing Role: Monitors both rails independently and holds RESET until both exceed thresholds for full timeout period. Use Value: Factory-trimmed 2.925V/2.188V thresholds match common processor supply tolerances without calibration. |
| GPS Equipment Power Integrity | POS Terminal Voltage Monitoring |
Use Scenario: GPS receivers operating in vehicles where alternator ripple and cold-cranking cause supply dips. IC Role / Device Role / Timing Role: Uses RSTIN input with external divider to monitor 1.8V LDO output feeding RF front-end. Use Value: 488mV internal reference enables accurate sub-2V monitoring; 35µs transient immunity rejects engine noise spikes. | Use Scenario: Point-of-sale terminals with multiple DC-DC converters powering display, printer, and secure element. IC Role / Device Role / Timing Role: Supervises primary 5V rail (VCC1), 3.3V logic rail (VCC2), and 1.2V crypto module rail (RSTIN). Use Value: Single IC replaces three discrete supervisors - reduces BOM count, test points, and layout complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6743XKVHD7 | Push-pull RESET output (vs. open-drain); identical thresholds, timeout, and pinout | Requires no external pullup; incompatible with bidirectional µP reset I/O ports | Select when driving CMOS inputs directly or when external pullup is undesirable |
| TPS3808G33DBVR | Dual-supply only (no RSTIN); 3.3V fixed VDD1 threshold, adjustable VDD2; 200ms timeout option only | Lacks third-monitor capability; requires external circuitry to add third rail monitoring | Select for cost-sensitive dual-rail systems where RSTIN functionality is unnecessary |
Compared with MAX6743XKVHD7 and TPS3808G33DBVR, the MAX6740XKVHD7 uniquely combines open-drain RESET with integrated manual reset detect and true triple-supply monitoring in SC70 - critical for space-constrained portable designs requiring flexible reset initiation and auxiliary rail supervision.
Availability
The MAX6740XKVHD7 is available at Aetrix Electronics and suitable for portable/battery-powered equipment, multivoltage systems, and notebook computers requiring stable component supply with guaranteed -40°C to +85°C operation and long-term production support.
Supply support for MAX6740XKVHD7 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 interface applications in industrial, computing, and consumer markets.
The MAX6736–MAX6745 product line delivers ultra-low-power, space-efficient microprocessor supervisors targeting portable and multivoltage embedded systems where supply integrity and battery life are critical.
FAQ
What is the exact reset timeout period for MAX6740XKVHD7?
The MAX6740XKVHD7 has a guaranteed minimum reset timeout period of 1200ms, with typical value 1800ms and maximum 2400ms. This timeout begins after all monitored supplies (VCC1, VCC2, RSTIN) rise above their respective thresholds and is temperature-stable across -40°C to +85°C per typical operating characteristics.
Does MAX6740XKVHD7 support manual reset functionality?
Yes, the MAX6740XKVHD7 supports manual reset detection via its open-drain RESET output, which includes an internal 50kΩ pullup resistor to VCC1. Pulling RESET low externally (e.g., with a pushbutton to GND) asserts reset and initiates the 1200ms timeout - no dedicated MR pin required.
What are the factory-trimmed voltage thresholds for MAX6740XKVHD7?
The MAX6740XKVHD7 has factory-trimmed thresholds of 2.925V for VCC1 (I/O supply) and 2.188V for VCC2 (core supply), with ±2.5% tolerance over temperature. These values correspond to the "SV" suffix in Maxim's ordering nomenclature and are verified in Table 1 of the datasheet.
Can MAX6740XKVHD7 monitor a 1.2V supply?
Yes, the MAX6740XKVHD7 can monitor a 1.2V supply using the RSTIN pin with an external resistor divider. With its 488mV internal reference, a 1.2V rail can be scaled to 488mV using R1/R2 ≈ 1.46, enabling accurate supervision without additional components beyond the divider.
What package type and dimensions does MAX6740XKVHD7 use?
The MAX6740XKVHD7 uses a 5-pin SC70-5 package measuring 2.0mm × 1.25mm × 0.95mm (L×W×H), with pin pitch of 0.65mm. It is RoHS-compliant and available in both leaded and lead-free variants (suffix "+T" for lead-free).
MAX6740XKVHD7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 1.313V, 1.575V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1.2s Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
MAX6740XKVHD7 FAQ
1.How can I place an order for MAX6740XKVHD7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6740XKVHD7 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 MAX6740XKVHD7 reliable?
The price and inventory of MAX6740XKVHD7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6740XKVHD7 is usually 5 days.
3.What payment methods are accepted for MAX6740XKVHD7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6740XKVHD7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6740XKVHD7?
MAX6740XKVHD7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6740XKVHD7 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 MAX6740XKVHD7?
For technical support, including MAX6740XKVHD7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6740XKVHD7 requirements.
6.How does Aetrix verify that MAX6740XKVHD7 is sourced from the original manufacturer or authorized distributors?
All MAX6740XKVHD7 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 MAX6740XKVHD7 meets industry standards.
7.What is the process for return or replacement of MAX6740XKVHD7?
All MAX6740XKVHD7 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6740XKVHD7, 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 MAX6740XKVHD7 part is unused and in its original packaging.
Return procedure for MAX6740XKVHD7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6740XKVHD7 Tags
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MIC826SYMT-TR
Microchip Technology
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APX803S-31SA-7
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APX803L20-29SA-7
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