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Analog Devices Inc./Maxim Integrated MAX6719UTVDD3+
- Part No.:
- MAX6719UTVDD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6719UTVDD3+.pdf
- Description:
- MAX6719 TRIPLE, ULTRA-LOW-VOLTAG
- Quantity:
- Payment:
- Shipping:
Inventory:3,700
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Product details
Overview
MAX6719UTVDD3+ from Maxim Integrated is a triple-voltage microprocessor supervisory circuit in 6-pin SOT23 package, monitoring VCC1 (primary), VCC2 (secondary), and RSTIN (adjustable third supply) with factory-trimmed thresholds of 4.625V and 3.075V, 210ms reset timeout, and guaranteed reset validity down to VCC1 or VCC2 = 0.8V - used in telecom power sequencing and multivoltage embedded systems.
For engineers reviewing the MAX6719UTVDD3+ datasheet, MAX6719UTVDD3+ pinout, MAX6719UTVDD3+ application, or MAX6719UTVDD3+ equivalent, key selection criteria include dual-supply monitoring with adjustable third input, push-pull reset output, manual reset support, watchdog timer capability, and operation across –40°C to +85°C industrial temperature range.
Technical Context
The MAX6719UTVDD3+ integrates three independent voltage monitors: VCC1 threshold at 4.625V (±1.5% over temp), VCC2 at 3.075V (±1.5%), and RSTIN referenced to 626.5mV internal bandgap. It asserts an active-low push-pull RST output when any monitored voltage falls below its threshold and holds reset for 210ms (min) after recovery.
It includes manual reset (MR) with 50kΩ internal pullup, no watchdog or power-fail functions (per Selector Guide), and operates with supply current as low as 14µA at 3.6V. Reset output remains valid even when VCC1 or VCC2 drops to 0.8V, enabling robust brownout detection in battery-backed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.625V (±1.5%) - sets primary supply undervoltage detection point for 5V rail monitoring |
| VCC2 Threshold | 3.075V (±1.5%) - enables reliable monitoring of 3.3V auxiliary or I/O supply |
| RSTIN Reference | 626.5mV - allows external resistor divider to monitor third supply down to 0.62V |
| Reset Timeout | 210ms (min) - ensures sufficient processor initialization time before release |
| Supply Current | 14µA (typ @ 3.6V) - minimizes quiescent load in always-on power domains |
| Operating Temp | –40°C to +85°C - qualified for industrial and telecom equipment environments |
| Reset Output Type | Push-pull active-low - eliminates need for external pullup and drives directly into µP reset pin |
Pinout & Package
MAX6719UTVDD3+ uses a 6-pin SOT23-6 package with gull-wing leads, 1.27mm pitch, and thermal pad omitted. Pin 1 is marked by dot; device footprint conforms to JEDEC MO-178AB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; sinks 3.2mA @ 4.5V |
| 2 | GND | System ground reference for all internal comparators and logic |
| 3 | MR | Active-low manual reset input with 50kΩ internal pullup to VCC1; 1µs minimum pulse width |
| 4 | VCC2 | Secondary supply input (0.9V–3.3V); powers internal VCC2 comparator and sets RST2 reference if present |
| 5 | RSTIN | Adjustable undervoltage monitor input; high-impedance (±25nA) node tied to 626.5mV reference |
| 6 | VCC1 | Primary supply input (1.8V–5.0V); powers core logic and sets RST output reference |
Key Features
| Feature | Design Value |
|---|---|
| Triple-supply monitoring | Simultaneous VCC1/VCC2/RSTIN supervision enables full system power integrity coverage without external components |
| Factory-trimmed thresholds | 4.625V/3.075V thresholds trimmed to ±1.5% over –40°C to +85°C, eliminating calibration overhead |
| Guaranteed reset at low VCC | Valid RST assertion guaranteed down to VCC1 or VCC2 = 0.8V - critical for battery brownout resilience |
| Low quiescent current | 14µA typical supply current at 3.6V supports >10-year battery life in always-on monitoring applications |
| Push-pull RST output | Eliminates external pullup resistor, reduces BOM count, and ensures fast, rail-to-rail reset signaling |
Applications
| Telecom Power Sequencing | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Sequencing startup of FPGA, DSP, and analog front-end rails in base station radio units. IC Role / Device Role / Timing Role: Monitors 4.625V bias supply, 3.075V I/O supply, and 1.2V core supply via RSTIN divider to enforce strict power-up order. Use Value: Prevents latch-up and configuration corruption by holding reset until all three rails stabilize within tolerance. |
Use Scenario: Ensuring deterministic restart after AC line sag or DC bus dip in programmable logic controller backplanes. IC Role / Device Role / Timing Role: Supervises main 5V logic rail (VCC1), isolated 3.3V I/O rail (VCC2), and auxiliary 2.5V ADC reference (RSTIN). Use Value: 210ms timeout provides margin for slow-responding DC-DC converters while 0.8V reset validity covers deep brownouts. |
| Medical Diagnostic Imaging | Network Edge Router |
Use Scenario: Maintaining safe state during transient interruptions in portable ultrasound scanner power rails. IC Role / Device Role / Timing Role: Dual-threshold monitoring of battery-derived 4.625V analog supply and 3.075V digital supply, with RSTIN tracking 1.8V FPGA core. Use Value: Push-pull RST drives FPGA PROG_B directly, eliminating external level-shifting and reducing board area. |
Use Scenario: Protecting packet forwarding ASICs from corrupted state during multi-rail power delivery faults. IC Role / Device Role / Timing Role: Watches 4.625V management CPU rail, 3.075V PHY interface rail, and 1.5V SerDes supply via RSTIN network. Use Value: Immunity to sub-20µs VCC transients prevents spurious resets during hot-swap events or ESD discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6720UTVDD3+ | Same pinout, identical thresholds and timeout, but open-drain RST output instead of push-pull | Requires external pullup resistor; unsuitable for direct µP reset pin drive without level translation | Select MAX6720UTVDD3+ only when open-drain flexibility (e.g., wired-OR reset buses) is required |
| TPS3808G33DBVR | Dual-supply monitor (no RSTIN), 3.3V fixed VDD threshold, 200ms timeout, 2.5µA supply current | Lacks third-supply monitoring capability; requires separate circuit for auxiliary rail supervision | Choose TPS3808G33DBVR only for cost-sensitive dual-rail designs where RSTIN functionality is unnecessary |
Compared with MAX6720UTVDD3+, the MAX6719UTVDD3+ delivers direct-drive reset capability without external components; versus TPS3808G33DBVR, it adds essential third-rail monitoring for complex multivoltage SoC platforms, justifying its use in high-integrity telecom and medical systems.
Availability
MAX6719UTVDD3+ is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and medical imaging equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6719UTVDD3+ 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 ultra-low-voltage supervisory circuits optimized for multirail embedded systems where reliability, small size, and guaranteed reset behavior under brownout conditions are critical design requirements.
FAQ
What is the exact reset threshold voltage for VCC1 on the MAX6719UTVDD3+?
The MAX6719UTVDD3+ has a factory-trimmed VCC1 reset threshold of 4.625V (minimum 4.500V, maximum 4.750V) with ±1.5% tolerance over –40°C to +85°C. This value is encoded in the "V" suffix per Maxim's Reset Voltage Threshold Suffix Guide and applies specifically to the MAX6719UTVDD3+ variant.
Does the MAX6719UTVDD3+ include a watchdog timer function?
No, the MAX6719UTVDD3+ does not include a watchdog timer. Per Maxim's Selector Guide, only MAX6721 through MAX6729 variants support WDI; the MAX6719UTVDD3+ is a triple-supply supervisor with MR input and RSTIN but no watchdog or power-fail features.
What is the reset timeout period for the MAX6719UTVDD3+ and how is it set?
The MAX6719UTVDD3+ has a reset timeout period of 210ms (minimum), set by the "D3" suffix in the part number per Maxim's Reset Timeout Period Suffix Guide. This timeout is guaranteed over temperature and ensures sufficient hold time for processor initialization after power stabilization.
Can the MAX6719UTVDD3+ monitor a 1.2V supply using the RSTIN pin?
Yes, the MAX6719UTVDD3+ can monitor a 1.2V supply via RSTIN using an external resistor divider. With a 626.5mV internal reference, a divider ratio of R1/R2 = (1.2V / 0.6265V) – 1 ≈ 0.914 enables precise 1.2V trip point, and leakage current (<±25nA) ensures minimal error from high-value resistors.
Is the MAX6719UTVDD3+ pin-compatible with other devices in the MAX6715–MAX6729 family?
The MAX6719UTVDD3+ shares the same 6-pin SOT23-6 package and pinout with MAX6715/16/19/20/21/22/23/24, but functional compatibility depends on feature set: it is pin-compatible with MAX6720UTVDD3+ (same thresholds/timeout) but differs in RST output type (push-pull vs. open-drain).
MAX6719UTVDD3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Type:
- Power Supply Monitor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 788mV, 1.575V, 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-23-6
MAX6719UTVDD3+ FAQ
1.How can I place an order for MAX6719UTVDD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6719UTVDD3+ 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 MAX6719UTVDD3+ reliable?
The price and inventory of MAX6719UTVDD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6719UTVDD3+ is usually 5 days.
3.What payment methods are accepted for MAX6719UTVDD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6719UTVDD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6719UTVDD3+?
MAX6719UTVDD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6719UTVDD3+ 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 MAX6719UTVDD3+?
For technical support, including MAX6719UTVDD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6719UTVDD3+ requirements.
6.How does Aetrix verify that MAX6719UTVDD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6719UTVDD3+ 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 MAX6719UTVDD3+ meets industry standards.
7.What is the process for return or replacement of MAX6719UTVDD3+?
All MAX6719UTVDD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6719UTVDD3+, 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 MAX6719UTVDD3+ part is unused and in its original packaging.
Return procedure for MAX6719UTVDD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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