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Analog Devices Inc./Maxim Integrated MAX6719UTYFD3+
- Part No.:
- MAX6719UTYFD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6719UTYFD3+.pdf
- Description:
- MAX6719UTYFD3+
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Product details
Overview
MAX6719UTYFD3+ from Maxim Integrated is a triple-voltage microprocessor supervisory circuit in a 6-pin SOT23 package, monitoring VCC1 (4.625V threshold), VCC2 (3.075V threshold), and an externally adjustable RSTIN input (626.5mV reference). It asserts an active-low open-drain reset output with 210ms minimum timeout, operates from -40°C to +85°C, and draws only 14µA typical supply current at 3.6V - designed for reliable power sequencing in multivoltage embedded systems.
For engineers reviewing the MAX6719UTYFD3+ datasheet, MAX6719UTYFD3+ pinout, MAX6719UTYFD3+ application, or MAX6719UTYFD3+ equivalent, key selection criteria include its triple-supply monitoring capability, factory-trimmed dual thresholds plus adjustable third input, guaranteed reset validity down to VCC = 0.8V, and compatibility with low-power portable and industrial control designs requiring precise brownout detection and manual reset support.
Technical Context
The MAX6719UTYFD3+ integrates three independent voltage monitoring paths: primary (VCC1), secondary (VCC2), and auxiliary (RSTIN), each with dedicated comparators referenced to precision internal bandgap references. Its reset logic combines OR-ed fault conditions - any monitored supply falling below its threshold, MR assertion, or RSTIN undervoltage - triggers a synchronized reset pulse held for the fixed 210ms timeout period.
This device implements a single open-drain RST output referenced to VCC1, no watchdog or power-fail functions, and includes an internal 50kΩ pullup on MR. It guarantees correct reset state down to VCC1 or VCC2 = 0.8V and exhibits immunity to short VCC transients via built-in glitch rejection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.625V (factory-trimmed, ±125mV tolerance) - sets brownout detection point for primary supply like 5V or 4.8V rails |
| VCC2 Threshold | 3.075V (factory-trimmed, ±75mV tolerance) - monitors secondary supply such as 3.3V I/O domain |
| RSTIN Reference | 626.5mV internal reference - enables external resistor-divider to monitor third supply down to 0.62V |
| Reset Timeout | 210ms minimum - ensures sufficient hold time for processor initialization after power recovery |
| Supply Current | 14µA typical at 3.6V - supports battery-backed or ultra-low-power always-on monitoring |
| Operating Temp | -40°C to +85°C - qualified for industrial and telecom equipment environments |
| Reset Output | Active-low open-drain RST - requires external pullup; compatible with bidirectional µP reset pins |
Pinout & Package
Package: 6-pin SOT23-6, surface-mount, 1.6mm × 2.9mm footprint, 0.95mm height.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low open-drain reset output; asserted when any monitored supply fails or MR is pulled low |
| 2 | GND | Analog/digital ground reference for all internal comparators and logic |
| 3 | MR | Active-low manual reset input with internal 50kΩ pullup to VCC1; initiates reset on logic-low pulse ≥1µs |
| 4 | VCC2 | Secondary supply input (0.9V–3.3V range); powers internal circuitry when > VCC1 and sets VCC2 threshold reference |
| 5 | RSTIN | Adjustable undervoltage monitor input; compares external divided voltage against 626.5mV reference |
| 6 | VCC1 | Primary supply input (1.8V–5.0V range); powers device when > VCC2 and sets VCC1 threshold reference |
Key Features
| Feature | Design Value |
|---|---|
| Triple-voltage monitoring | Simultaneous supervision of VCC1, VCC2, and RSTIN enables full system power integrity coverage without external components |
| Factory-trimmed thresholds | VCC1 = 4.625V and VCC2 = 3.075V provide precise, production-tested brownout points eliminating calibration overhead |
| Adjustable third input | RSTIN with 626.5mV reference allows monitoring of auxiliary rails (e.g., 1.2V core, 1.8V memory) using simple resistor dividers |
| Low-power operation | 14µA typical ICC at 3.6V enables continuous supervision in energy-constrained applications like IoT edge nodes |
| Robust reset guarantee | Valid reset assertion guaranteed down to VCC1 or VCC2 = 0.8V - critical for graceful shutdown during deep brownouts |
Applications
| Industrial PLC Controller | Portable Medical Monitor |
|---|---|
Use Scenario: Monitors 5V main logic rail, 3.3V I/O rail, and 1.2V FPGA core supply in a DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Triple-supply supervisor ensuring coordinated reset assertion across domains during AC line sag or DC/DC converter fault. Use Value: Prevents partial initialization and firmware corruption by holding reset until all three rails stabilize above their respective thresholds for ≥210ms. | Use Scenario: Supervises battery-backed 3.3V microcontroller supply, 2.8V sensor interface rail, and 1.8V display driver supply in a handheld ECG device. IC Role / Device Role / Timing Role: Low-current (14µA) triple-monitor enabling multi-week standby while detecting subtle battery voltage decay before critical brownout. Use Value: Extends usable battery life by avoiding unnecessary resets during transient dips, while guaranteeing clean restart when true undervoltage occurs. |
| Telecom Line Card | Automotive Infotainment Module |
Use Scenario: Tracks +5V management rail, +3.3V PHY interface supply, and +1.5V SerDes core voltage in a modular Ethernet switch line card. IC Role / Device Role / Timing Role: Fault-isolating supervisor that asserts reset only when failure occurs in any monitored domain, supporting hot-swap compliance. Use Value: Enables deterministic recovery after field-replaceable unit insertion by synchronizing reset timing across heterogeneous voltage domains. | Use Scenario: Monitors 5V infotainment head-unit main supply, 3.3V MCU I/O rail, and 1.2V application processor core in an AEC-Q200-compliant automotive module. IC Role / Device Role / Timing Role: Industrial-grade (−40°C to +85°C) triple supervisor providing fail-safe reset coordination during engine cranking voltage drops. Use Value: Maintains valid reset state even as battery voltage dips to 0.8V, preventing spurious reboots during cold-cranking events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6720UTYFD3+ | Same pinout, identical thresholds and timeout, but push-pull RST output instead of open-drain | Requires no external pullup; incompatible with bidirectional µP reset pins without series resistor | Select MAX6720UTYFD3+ when driving CMOS inputs directly or when board layout prohibits external pullup routing |
| TPS3808G33DBVR | Dual-supply monitor only (VDD, VDD2); no RSTIN input; 3.3V fixed VDD threshold; 200ms timeout | Lacks third-supply monitoring capability; suitable only where auxiliary rail supervision is handled separately | Choose TPS3808G33DBVR for cost-sensitive dual-rail systems where RSTIN functionality is unnecessary |
Compared with MAX6720UTYFD3+, the MAX6719UTYFD3+ provides open-drain flexibility for mixed-voltage reset buses, while TPS3808G33DBVR offers lower unit cost but omits the critical third-monitoring channel required for complex SoC power domains.
Availability
MAX6719UTYFD3+ is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, telecom line cards, and automotive infotainment modules requiring stable component supply and guaranteed long-term manufacturability.
Supply support for MAX6719UTYFD3+ 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 across industrial, communications, and computing markets.
The MAX6715–MAX6729 family delivers ultra-low-voltage, multi-rail supervisory circuits optimized for space-constrained, multivoltage systems where reliability, low quiescent current, and accurate threshold detection are essential.
FAQ
What is the exact reset timeout period for MAX6719UTYFD3+?
The MAX6719UTYFD3+ has a minimum reset timeout period of 210ms, as indicated by the 'D3' suffix in its part number. This is the guaranteed minimum duration for which the active-low RST output remains asserted after all monitored supplies (VCC1, VCC2, RSTIN) rise above their respective thresholds, or after MR returns high. Typical timeout is 210ms, with maximum specified at 280ms over temperature and process variation.
Does MAX6719UTYFD3+ include a watchdog timer function?
No, the MAX6719UTYFD3+ does not include a watchdog timer. According to the Selector Guide and functional description, MAX6719 devices are configured for triple-voltage monitoring with manual reset (MR) and adjustable RSTIN input, but explicitly exclude WDI functionality. Watchdog capability is present only in MAX6721 through MAX6729 variants - confirmed by pinout absence of WDI and omission from the MAX6719 row in the Selector Guide.
What are the factory-trimmed voltage thresholds for MAX6719UTYFD3+?
The MAX6719UTYFD3+ features factory-trimmed thresholds of 4.625V for VCC1 (primary supply) and 3.075V for VCC2 (secondary supply), as decoded from the 'YF' suffix per the Reset Voltage Threshold Suffix Guide. These values are production-tested with tolerances of ±125mV (VCC1) and ±75mV (VCC2), enabling precise brownout detection without external calibration components.
Can MAX6719UTYFD3+ monitor a 1.2V core supply?
Yes, the MAX6719UTYFD3+ can monitor a 1.2V core supply using its RSTIN pin. With an internal 626.5mV reference, a resistor divider (e.g., R1 = 110kΩ, R2 = 100kΩ) scales the 1.2V rail to ~0.595V at RSTIN - below threshold - and asserts reset when the core drops below ~1.18V. The high-impedance RSTIN input (±25nA leakage) minimizes loading, making it suitable for low-power core domains.
Is MAX6719UTYFD3+ RoHS-compliant and lead-free?
Yes, MAX6719UTYFD3+ is RoHS-compliant and supplied in lead-free packaging. The '+' suffix in the part number explicitly denotes lead-free termination per Maxim's ordering convention. Devices meet JEDEC J-STD-020 moisture sensitivity level 1 and are qualified for reflow soldering up to 260°C peak temperature, with full compliance to EU RoHS Directive 2011/65/EU and China RoHS.
MAX6719UTYFD3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX6719UTYFD3+ FAQ
1.How can I place an order for MAX6719UTYFD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6719UTYFD3+ 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 MAX6719UTYFD3+ reliable?
The price and inventory of MAX6719UTYFD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6719UTYFD3+ is usually 5 days.
3.What payment methods are accepted for MAX6719UTYFD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6719UTYFD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6719UTYFD3+?
MAX6719UTYFD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6719UTYFD3+ 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 MAX6719UTYFD3+?
For technical support, including MAX6719UTYFD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6719UTYFD3+ requirements.
6.How does Aetrix verify that MAX6719UTYFD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6719UTYFD3+ 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 MAX6719UTYFD3+ meets industry standards.
7.What is the process for return or replacement of MAX6719UTYFD3+?
All MAX6719UTYFD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6719UTYFD3+, 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 MAX6719UTYFD3+ part is unused and in its original packaging.
Return procedure for MAX6719UTYFD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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