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Analog Devices Inc./Maxim Integrated MAX6719UTYFD3+T
- Part No.:
- MAX6719UTYFD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6719UTYFD3+T.pdf
- Description:
- MAX6719UTYFD3+T
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Product details
Overview
MAX6719UTYFD3+T from Maxim Integrated is a triple-voltage microprocessor supervisory circuit in 6-pin SOT23 package, monitoring VCC1 (1.575V threshold), VCC2 (0.788V threshold), and an externally adjustable RSTIN input (626.5mV reference) with 210ms minimum reset timeout. It features open-drain active-low RST output, manual reset input (MR), and operates from -40°C to +85°C for reliable power sequencing in multivoltage embedded systems.
For engineers reviewing the MAX6719UTYFD3+T datasheet, MAX6719UTYFD3+T pinout, MAX6719UTYFD3+T application, or MAX6719UTYFD3+T equivalent, this page delivers verified specifications, exact pin functions, real-world use cases in telecom and industrial equipment, and two confirmed alternative parts with documented functional differences.
Technical Context
The MAX6719UTYFD3+T implements dual independent voltage comparators for VCC1 and VCC2 plus a high-impedance RSTIN comparator referenced to a 626.5mV internal bandgap. Reset assertion occurs when any monitored supply falls below its factory-trimmed threshold, and reset remains asserted for a guaranteed minimum 210ms after all supplies recover.
It integrates a manual reset input with 50kΩ internal pullup to VCC1, supports noise-immune MR pulse widths ≥1µs, and guarantees valid reset logic state down to VCC1 or VCC2 = 0.8V - enabling robust brownout detection in low-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 1.575V (typ), factory-trimmed falling threshold for primary supply monitoring |
| VCC2 Threshold | 0.788V (typ), factory-trimmed falling threshold for secondary supply monitoring |
| RSTIN Reference | 626.5mV (typ), internal precision reference for third-voltage monitoring via external resistor divider |
| Reset Timeout | 210ms (min), fixed minimum duration of active-low reset assertion after recovery |
| Supply Current | 14µA (typ at 3.6V), ultra-low quiescent current enabling battery-operated system compatibility |
| Operating Temp | -40°C to +85°C, industrial-grade temperature range suitable for harsh environments |
| Package | SOT23-6, 2.9mm × 1.6mm footprint with 0.95mm height for space-constrained PCB layouts |
Pinout & Package
MAX6719UTYFD3+T uses a 6-pin SOT23-6 package with gull-wing leads, JEDEC MO-178AC compliant, thermal pad optional, moisture sensitivity level 1.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low open-drain reset output; requires external pullup; asserts when VCC1/VCC2/RSTIN drop below thresholds or MR is pulled low |
| 2 | GND | Analog/digital ground reference for all internal comparators and logic |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC1 with 50kΩ; reset persists for full timeout after MR release |
| 4 | VCC2 | Secondary supply input; powers internal circuitry when > VCC1 and sets VCC2 monitor reference |
| 5 | VCC1 | Primary supply input; powers device when > VCC2 and sets VCC1 monitor reference |
| 6 | RSTIN | High-impedance adjustable reset input; compares against 626.5mV reference; enables third-voltage monitoring via resistor divider |
Key Features
| Feature | Design Value |
|---|---|
| Triple-voltage supervision | Simultaneous monitoring of VCC1 (1.575V), VCC2 (0.788V), and RSTIN (626.5mV ref) eliminates need for three discrete supervisors |
| Guaranteed reset validity | Reset output remains logically valid even when VCC1 or VCC2 drops to 0.8V - critical for detecting deep brownouts |
| Low-power operation | 14µA typical supply current at 3.6V enables >10-year battery life in always-on monitoring applications |
| Immunity to VCC transients | Withstands negative-going VCC glitches ≤20µs (at 100mV overdrive), preventing spurious resets in noisy power rails |
| MR glitch rejection | 100ns internal filtering rejects EMI-induced noise on manual reset line without external RC components |
Applications
| Telecom Power Management | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Monitoring 3.3V core, 1.2V FPGA I/O, and 5V auxiliary rail in a remote radio unit with backup battery. IC Role / Device Role / Timing Role: Triple-supply supervisor ensuring synchronized reset across voltage domains during AC loss or battery switchover. Use Value: Prevents partial initialization by holding all subsystems in reset until all rails stabilize above their precise thresholds (1.575V/0.788V/626.5mV). |
Use Scenario: Supervising 24V field power, 5V logic, and 3.3V microcontroller supply in a DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Fault-detection hub that triggers safe shutdown when any rail dips below specification during motor startup surges. Use Value: 210ms minimum reset timeout ensures firmware completes critical save-to-EEPROM before power collapse. |
| Portable Medical Monitor | Network Switch ASIC Power Sequencing |
|
Use Scenario: Battery-powered patient monitor with Li-ion (4.2V–3.0V), 1.8V sensor interface, and 1.2V processor core. IC Role / Device Role / Timing Role: Low-quiescent-current supervisor extending runtime while guaranteeing clean boot after battery insertion or recharge. Use Value: 14µA ICC enables >500h standby on 100mAh coin cell; RSTIN monitors battery voltage via divider for early low-battery warning. |
Use Scenario: Sequencing 12V DC/DC input, 3.3V PHY, and 1.0V ASIC core in a 10G Ethernet switch with strict ramp-time requirements. IC Role / Device Role / Timing Role: Precision timing supervisor enforcing minimum 210ms hold time between rail stabilization and ASIC release-from-reset. Use Value: Factory-trimmed thresholds eliminate calibration overhead; SOT23-6 footprint fits tight BGA escape routing near power ICs. |
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+T | Push-pull RST output instead of open-drain; identical thresholds, timeout, and pinout | Requires no external pullup resistor; incompatible with bidirectional µP reset pins without series resistor | Select MAX6720UTYFD3+T when driving CMOS inputs directly or when board layout prohibits external pullup placement |
| TPS3808G33DBVR | Dual-supply only (VDD, VDD1); no RSTIN input; 3.3V fixed VDD threshold; 200ms timeout | Lacks third-voltage monitoring capability; requires separate circuit for auxiliary rail supervision | Choose TPS3808G33DBVR only if system has exactly two rails and space allows adding discrete RSTIN solution |
Compared with MAX6719UTYFD3+T, MAX6720UTYFD3+T simplifies BOM by eliminating the pullup resistor but sacrifices bidirectional µP compatibility, while TPS3808G33DBVR reduces integration by omitting RSTIN - making MAX6719UTYFD3+T the only single-chip solution for true triple-rail supervision with open-drain flexibility.
Availability
MAX6719UTYFD3+T is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6719UTYFD3+T 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 in industrial, automotive, and communications markets.
The MAX6715–MAX6729 family delivers compact, low-power supervisory solutions optimized for multivoltage systems where simultaneous monitoring of primary, secondary, and auxiliary rails is required without sacrificing accuracy or reliability.
FAQ
What is the exact reset threshold voltage for VCC1 on MAX6719UTYFD3+T?
The MAX6719UTYFD3+T has a factory-trimmed VCC1 reset threshold of 1.575V (typical), with min/max values of 1.530V and 1.620V across temperature and process variation. This value is fixed by the 'Y' suffix in the part number per Maxim's Reset Voltage Threshold Suffix Guide and applies specifically to the MAX6719UTYFD3+T variant.
Does MAX6719UTYFD3+T support monitoring a negative supply voltage?
Yes - the MAX6719UTYFD3+T can monitor negative supplies using the RSTIN pin with an appropriate resistor-divider network configured per Figure 1 in the datasheet. The internal 626.5mV reference remains fixed, so the external network must scale the negative rail to produce a positive voltage at RSTIN that crosses 626.5mV when the negative supply fails.
What is the function of Pin 6 (RSTIN) on MAX6719UTYFD3+T?
Pin 6 (RSTIN) on MAX6719UTYFD3+T is a high-impedance input that connects to an internal 626.5mV comparator. When the voltage at RSTIN falls below this reference - typically set via an external resistor divider across a third supply - the device asserts the RST output. It enables true triple-voltage supervision without additional ICs.
Can MAX6719UTYFD3+T operate with VCC1 = 1.8V and VCC2 = 0.9V simultaneously?
Yes - the MAX6719UTYFD3+T is fully specified to operate with VCC1 as low as 1.8V and VCC2 as low as 0.9V, matching its VCC1 threshold of 1.575V and VCC2 threshold of 0.788V. Its guaranteed reset validity down to VCC1 or VCC2 = 0.8V ensures reliable operation across this entire range.
Is the reset timeout period of MAX6719UTYFD3+T adjustable?
No - the reset timeout period of MAX6719UTYFD3+T is fixed at 210ms (minimum), determined by the 'D3' suffix in the part number per Maxim's Reset Timeout Period Suffix Guide. It cannot be modified externally; alternative timeout values require selecting a different variant such as MAX6719UTYFD2+T (13.2ms) or MAX6719UTYFD5+T (420ms).
MAX6719UTYFD3+T 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+T FAQ
1.How can I place an order for MAX6719UTYFD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6719UTYFD3+T 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+T reliable?
The price and inventory of MAX6719UTYFD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6719UTYFD3+T is usually 5 days.
3.What payment methods are accepted for MAX6719UTYFD3+T?
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MAX6719UTYFD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6719UTYFD3+T 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+T?
For technical support, including MAX6719UTYFD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6719UTYFD3+T requirements.
6.How does Aetrix verify that MAX6719UTYFD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6719UTYFD3+T 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+T meets industry standards.
7.What is the process for return or replacement of MAX6719UTYFD3+T?
All MAX6719UTYFD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6719UTYFD3+T, 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+T part is unused and in its original packaging.
Return procedure for MAX6719UTYFD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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