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Analog Devices Inc./Maxim Integrated MAX6719UTYHD3+
- Part No.:
- MAX6719UTYHD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6719UTYHD3+.pdf
- Description:
- IC MPU SUPERVISOR SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,285
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Product details
Overview
MAX6719UTYHD3+ from Maxim Integrated is a triple-voltage microprocessor supervisory circuit in 6-pin SOT23 package, monitoring VCC1 (4.625V threshold), VCC2 (3.075V threshold), and an externally adjustable third supply via RSTIN (626mV reference). It asserts active-low open-drain reset for ≥210ms after any monitored voltage falls below threshold or manual reset is triggered. Used in multivoltage telecom and industrial systems requiring reliable power-up sequencing and brownout protection.
For engineers reviewing the MAX6719UTYHD3+ datasheet, MAX6719UTYHD3+ pinout, MAX6719UTYHD3+ application, or MAX6719UTYHD3+ equivalent, key selection criteria include dual-supply monitoring with factory-trimmed thresholds, 210ms reset timeout, RSTIN-based auxiliary voltage supervision down to 0.62V, and guaranteed reset validity with VCC1 or VCC2 ≥ 0.8V.
Technical Context
The MAX6719UTYHD3+ integrates three independent voltage monitors: primary (VCC1) and secondary (VCC2) with factory-trimmed thresholds, plus a high-impedance RSTIN input referenced to a 626mV internal bandgap. Its reset logic combines OR-ed fault conditions - VCC1/VCC2 undervoltage, RSTIN undervoltage, or MR assertion - driving a single open-drain RST output.
It features a fixed 210ms (min) reset timeout period, no watchdog or power-fail functionality (per Selector Guide), and operates across -40°C to +85°C. Supply current is 14µA typical at 3.6V, with reset output valid down to VCC1 or VCC2 = 0.8V, enabling robust operation during deep brownouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.625V (factory-trimmed, ±125mV tolerance); ensures reliable reset assertion on 5V rail brownout |
| VCC2 Threshold | 3.075V (factory-trimmed, ±75mV tolerance); matches common 3.3V I/O supply monitoring |
| RSTIN Reference | 626mV internal reference; enables precise external resistor-divider setup for third-supply monitoring |
| Reset Timeout | 210ms minimum; provides sufficient hold time for processor initialization and peripheral stabilization |
| Supply Current | 14µA typical at 3.6V; minimizes quiescent power in battery-operated or energy-sensitive systems |
| Operating Temp | -40°C to +85°C; supports industrial and telecom equipment deployment without derating |
| Reset Output | Active-low open-drain RST; requires external pullup, compatible with 1.8–5.5V logic interfaces |
Pinout & Package
MAX6719UTYHD3+ uses a 6-pin SOT23-6 package (2.9mm × 1.6mm × 1.1mm), optimized for space-constrained PCB layouts in portable and embedded systems.
| Pin/Terminal | 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; must be connected to system ground plane for stable threshold accuracy |
| 3 | MR | Active-low manual reset input; internal 50kΩ pullup to VCC1; debounced by design, no external RC needed |
| 4 | VCC2 | Secondary supply input (0.9–3.3V range); powers internal comparator for VCC2 monitoring and sets RST2 reference if present |
| 5 | VCC1 | Primary supply input (1.8–5.0V range); powers device core and sets RST output reference voltage |
| 6 | RSTIN | Adjustable undervoltage monitor input; high-impedance node referenced to 626mV internal reference for third-supply sensing |
Key Features
| Feature | Design Value |
|---|---|
| Triple-supply monitoring | Simultaneous VCC1 (4.625V), VCC2 (3.075V), and RSTIN (0.626V ref) supervision eliminates need for discrete comparators or multiple supervisors |
| Guaranteed reset validity | Reset output remains functional even when VCC1 or VCC2 drops to 0.8V - critical for detecting final-stage brownout before complete failure |
| Low quiescent current | 14µA typical at 3.6V enables use in always-on subsystems and battery-backed applications without significant runtime impact |
| Factory-trimmed thresholds | VCC1/VCC2 thresholds trimmed to ±1.5% over temperature; avoids calibration overhead and improves BOM consistency |
| Open-drain RST output | Compatible with mixed-voltage systems (1.8V/2.5V/3.3V/5V) via external pullup; supports wired-OR reset bus architectures |
Applications
| Telecom Line Cards | Industrial PLC Modules |
|---|---|
|
Use Scenario: Monitoring 5V backplane, 3.3V I/O, and 1.2V FPGA core rails in carrier-grade line cards. IC Role / Device Role / Timing Role: Triple-supply supervisor ensuring synchronized reset assertion across heterogeneous voltage domains during AC loss or hot-swap events. Use Value: Prevents partial initialization and state corruption by holding reset until all rails stabilize above their respective thresholds for ≥210ms. |
Use Scenario: Supervising 24V DC-DC converted 5V logic, 3.3V MCU, and 1.8V sensor interface supplies in programmable logic controllers. IC Role / Device Role / Timing Role: Fault-detection hub that triggers system-wide reset on any rail collapse, including transient dips below 0.8V where many competitors fail. Use Value: Enables deterministic recovery from brownout conditions without firmware intervention, meeting IEC 61000-4-11 immunity requirements. |
| Medical Diagnostic Handhelds | Network Edge Routers |
|
Use Scenario: Managing battery-powered 3.7V Li-ion, regulated 3.3V SoC, and 1.1V memory supplies in portable ultrasound devices. IC Role / Device Role / Timing Role: Low-power supervisory guard ensuring safe shutdown and restart when battery voltage decays below operational limits. Use Value: 14µA supply current extends battery life; RSTIN allows precise monitoring of critical analog supply without adding external components. |
Use Scenario: Coordinating power sequencing for 12V PoE input, 5V PHY, and 1.0V switch ASIC rails in compact edge routing hardware. IC Role / Device Role / Timing Role: Centralized reset arbiter asserting reset only when all three rails meet timing and voltage criteria post-power-up. Use Value: Eliminates race conditions between power domains, reducing boot failures and field returns caused by marginal supply ramp rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6720UTYHD3+ | Same pinout, identical VCC1/VCC2 thresholds and 210ms timeout, but push-pull RST output instead of open-drain | Requires no external pullup; incompatible with wired-OR reset buses or mixed-voltage logic interfaces | Select MAX6720UTYHD3+ only when driving a single load referenced to VCC1 and no shared reset bus is used |
| TPS3808G33DBVR | Dual-supply monitor (VDD, VDDIO) only; no RSTIN input; 3.3V fixed VDD threshold; 200ms timeout; 2.5µA IQ | Lacks third-supply monitoring capability; suitable only for simpler two-rail systems | Choose TPS3808G33DBVR for cost-sensitive dual-rail designs where auxiliary supply monitoring is handled separately |
Compared with MAX6719UTYHD3+, MAX6720UTYHD3+ offers push-pull drive for direct MCU reset pin connection but sacrifices bus-sharing flexibility, while TPS3808G33DBVR reduces cost and current draw at the expense of missing the critical RSTIN-based third-monitoring channel required for complex multivoltage systems.
Availability
MAX6719UTYHD3+ is available at Aetrix Electronics and suitable for telecom line cards, industrial PLC modules, and medical handhelds requiring stable component supply with guaranteed long-term availability and full traceability.
Supply support for MAX6719UTYHD3+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for demanding industrial, communications, and computing applications.
The MAX6715–MAX6729 family was designed specifically for space- and power-constrained multivoltage systems needing reliable, integrated power-supply monitoring with minimal external components and guaranteed operation down to 0.8V supply.
FAQ
What is the exact reset threshold voltage for VCC1 on the MAX6719UTYHD3+?
The MAX6719UTYHD3+ has a factory-trimmed VCC1 reset threshold of 4.625V, with a tolerance of ±125mV (4.500V to 4.750V) over temperature. This value is encoded in the "Y" suffix per Maxim's Reset Voltage Threshold Suffix Guide and is verified across the full -40°C to +85°C operating range.
Does the MAX6719UTYHD3+ include a watchdog timer function?
No, the MAX6719UTYHD3+ does not include a watchdog timer. Per Maxim's Selector Guide, only MAX6721 through MAX6729 variants support WDI functionality. The MAX6719UTYHD3+ is a triple-supply supervisor with RSTIN monitoring but no watchdog input or associated timing circuitry.
What is the function of the RSTIN pin on the MAX6719UTYHD3+?
The RSTIN pin on the MAX6719UTYHD3+ is a high-impedance input referenced to an internal 626mV bandgap voltage. It enables external resistor-divider configuration to monitor a third supply voltage down to 0.62V. When RSTIN falls below 626mV, the device asserts RST - providing flexible auxiliary voltage supervision without additional ICs.
Is the MAX6719UTYHD3+ pin-compatible with other parts in the MAX6715–MAX6729 family?
Yes, the MAX6719UTYHD3+ shares the same 6-pin SOT23-6 footprint and pinout with MAX6715, MAX6716, MAX6719, MAX6720, and MAX6721–MAX6724. However, functional differences exist - e.g., MAX6719UTYHD3+ has open-drain RST and RSTIN, while MAX6720UTYHD3+ has push-pull RST and same RSTIN - so electrical compatibility must be verified per application.
What is the minimum supply voltage at which the MAX6719UTYHD3+ guarantees correct reset output behavior?
The MAX6719UTYHD3+ guarantees valid reset output logic state when either VCC1 or VCC2 remains greater than 0.8V. This specification ensures reliable brownout detection and reset assertion even during severe supply sag - a key differentiator versus supervisors requiring ≥1.2V or higher for reset integrity.
MAX6719UTYHD3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 1.313V, 2.188V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6719UTYHD3+ FAQ
1.How can I place an order for MAX6719UTYHD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6719UTYHD3+ 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 MAX6719UTYHD3+ reliable?
The price and inventory of MAX6719UTYHD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6719UTYHD3+ is usually 5 days.
3.What payment methods are accepted for MAX6719UTYHD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6719UTYHD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6719UTYHD3+?
MAX6719UTYHD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6719UTYHD3+ 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 MAX6719UTYHD3+?
For technical support, including MAX6719UTYHD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6719UTYHD3+ requirements.
6.How does Aetrix verify that MAX6719UTYHD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6719UTYHD3+ 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 MAX6719UTYHD3+ meets industry standards.
7.What is the process for return or replacement of MAX6719UTYHD3+?
All MAX6719UTYHD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6719UTYHD3+, 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 MAX6719UTYHD3+ part is unused and in its original packaging.
Return procedure for MAX6719UTYHD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6719UTYHD3+ Tags
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MIC826SYMT-TR
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