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Analog Devices Inc./Maxim Integrated MAX6719AUTSYD3+T
- Part No.:
- MAX6719AUTSYD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6719AUTSYD3+T.pdf
- Description:
- IC SUPERVISOR MPU SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,303
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Product details
Overview
MAX6719AUTSYD3+T from Maxim Integrated is a dual-supply ultra-low-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (1.8V–5.0V) and VCC2 (0.9V–3.3V) with factory-trimmed reset thresholds, 140ms minimum reset timeout, and RSTIN input for adjustable third-voltage monitoring down to 0.626V. It asserts active-low push-pull RST output when either supply drops below threshold and maintains reset for ≥140ms after recovery - used in telecom power management and battery-operated embedded systems.
For engineers reviewing the MAX6719AUTSYD3+T datasheet, MAX6719AUTSYD3+T pinout, MAX6719AUTSYD3+T application, or MAX6719AUTSYD3+T equivalent, key selection criteria include dual-supply voltage monitoring range, guaranteed reset validity down to VCC1/VCC2 = 0.8V, 140ms reset timeout, RSTIN-adjustable third-voltage capability, and SOT23-6 thermal performance (θJA = 115°C/W on multilayer board).
Technical Context
The MAX6719AUTSYD3+T integrates two independent voltage comparators with hysteresis (0.5% of VTH), a precision 626.5mV internal reference for RSTIN, and a reset timeout timer with fixed 140ms (D3 suffix) minimum delay. Its dual-supply architecture enables simultaneous monitoring of core (VCC2) and I/O (VCC1) rails in multivoltage SoC systems.
It features push-pull RST output referenced to VCC1, MR input with 50kΩ internal pullup, and RSTIN input with ±100nA leakage and 3mV hysteresis - all operating across –40°C to +125°C with supply current as low as 10µA at 3.6V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Timeout Period | 140ms (min) - ensures reliable processor initialization before release in boot-critical applications |
| VCC1 Reset Threshold | 2.850V (typ, S-suffix) - factory-trimmed for 3.0V I/O rail supervision with ±1.5% tolerance |
| VCC2 Reset Threshold | 1.275V (typ, H-suffix) - factory-trimmed for 1.3V core rail supervision with ±1.5% tolerance |
| RSTIN Threshold Voltage | 626.5mV (typ) - enables external resistor-divider to monitor third supply down to 0.62V |
| Supply Current | 10µA (typ at 3.6V) - supports ultra-low-power battery-backed systems over full temperature range |
| Operating Temperature | –40°C to +125°C - qualified for automotive under-hood and industrial control environments |
| Reset Output Type | Push-pull active-low RST - eliminates need for external pullup and drives directly into µP reset pin |
Pinout & Package
SOT23-6 package (package code U6+1), 1.6mm × 2.9mm footprint, 1.1mm height, thermal resistance θJA = 115°C/W on multilayer PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low reset output | Push-pull driver referenced to VCC1; asserts low on VCC1/VCC2/RSTIN fault or MR low; holds for 140ms min after recovery |
| 2 - GND | Ground reference | Common return for all internal comparators, timers, and output drivers; must be low-impedance connection |
| 3 - MR | Manual-reset input | Active-low CMOS-compatible input with 50kΩ internal pullup to VCC1; 1µs minimum pulse width required |
| 4 - VCC2 | Secondary supply input | Powers internal VCC2 comparator and RST2 logic; monitors 0.9V–3.3V rail; threshold set by H-suffix (1.275V typ) |
| 5 - VCC1 | Primary supply input | Powers device core and VCC1 comparator; monitors 1.8V–5.0V rail; threshold set by S-suffix (2.850V typ) |
| 6 - RSTIN | Adjustable reset input | High-impedance (±100nA) comparator input with 626.5mV internal reference; enables third-voltage monitoring via resistor divider |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent supply monitoring | Simultaneous VCC1 (I/O) and VCC2 (core) supervision with separate factory-trimmed thresholds avoids single-point failure in multirail SoCs |
| Guaranteed reset validity to 0.8V | Ensures correct RST logic state even during brownout conditions where VCC1 or VCC2 drops to 0.8V - critical for fail-safe shutdown |
| RSTIN-adjustable third-voltage monitor | 626.5mV precision reference enables monitoring of auxiliary supplies (e.g., RTC, sensor bias) down to 0.62V without external reference |
| Immunity to short VCC transients | Withstands ≤20µs negative-going glitches at 100mV overdrive - prevents spurious resets in noisy power environments |
| Low quiescent current | 10µA typical at 3.6V enables >10-year battery life in always-on monitoring applications (e.g., smart meter backup rails) |
Applications
| Telecom Power Sequencing | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Monitoring primary 3.3V backplane and secondary 1.2V FPGA core supply in 48V-powered telecom line cards. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting RST until both rails stabilize post-power-up, with 140ms timeout ensuring FPGA configuration completion. Use Value: Prevents partial configuration lockup by guaranteeing reset hold time exceeds FPGA bitstream load duration (typically <100ms). |
Use Scenario: Supervising isolated 5V fieldbus interface and 2.5V analog front-end supply in DIN-rail mounted PLC modules. IC Role / Device Role / Timing Role: Independent VCC1/VCC2 monitoring with manual reset (MR) for field service recovery; RSTIN unused. Use Value: Enables deterministic restart after brownout without requiring MCU firmware intervention - reduces MTTR in unattended installations. |
| Portable Medical Sensor Hub | Automotive Body Control Module |
Use Scenario: Battery-backed monitoring of 3.0V system rail and 1.8V BLE radio supply in handheld ECG sensor hub. IC Role / Device Role / Timing Role: Low-current (10µA) dual-supply watchdog with RSTIN configured for battery voltage threshold (2.7V via divider). Use Value: Extends coin-cell lifetime beyond 5 years while providing early low-battery warning and graceful shutdown via PFO-linked interrupt. |
Use Scenario: Supervising 5.0V infotainment domain controller and 1.3V ADAS vision processor supply in 12V vehicle electrical system. IC Role / Device Role / Timing Role: AEC-Q100-compliant dual-supply monitor with guaranteed operation at –40°C/+125°C and 0.8V reset validity. Use Value: Meets ISO 16750-2 transient immunity requirements by rejecting <20µs supply glitches - eliminates false resets during load dump events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6720AUTSYD3+T | Same SOT23-6 package and D3 timeout, but VCC1 threshold = 2.625V (R-suffix) and VCC2 = 1.050V (F-suffix); no RSTIN pin | Lacks RSTIN input - unsuitable for triple-voltage monitoring; better fit for 2.5V/1.0V rail pairs | Select when only dual-rail monitoring is needed and lower VCC2 threshold improves margin for 1.0V cores |
| TPS3808G33DBVR | SOT23-6, 3.3V fixed VDD monitor only; single-supply, no VCC2 or RSTIN; 200ms timeout; 1.6µA IQ | Monitors only one supply; lacks dual-rail coordination and manual reset; not suitable for multivoltage sequencing | Choose for ultra-low-power single-rail applications where dual monitoring is unnecessary and 200ms timeout is acceptable |
Compared with MAX6720AUTSYD3+T, the MAX6719AUTSYD3+T adds RSTIN for flexible third-voltage supervision but shares identical timing and thermal specs; versus TPS3808G33DBVR, it provides true dual-rail coordination and MR functionality essential for complex embedded systems.
Availability
MAX6719AUTSYD3+T is available at Aetrix Electronics and suitable for telecom power sequencing, industrial PLC I/O modules, and portable medical sensor hubs requiring stable component supply with extended temperature support and precise dual-threshold supervision.
Supply support for MAX6719AUTSYD3+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 connectivity in demanding industrial, automotive, and communications applications.
The MAX6715A–MAX6729A family delivers ultra-low-voltage supervisory circuits optimized for multivoltage SoC systems, enabling reliable power sequencing and brownout protection in space-constrained SOT23 packages.
FAQ
What is the reset timeout period for MAX6719AUTSYD3+T?
The MAX6719AUTSYD3+T has a fixed minimum reset timeout period of 140ms (D3 suffix), guaranteed over –40°C to +125°C. This delay begins when VCC1 or VCC2 rises above its respective threshold and ensures the microprocessor completes boot initialization before reset deassertion. The actual timeout may vary slightly with temperature but remains ≥140ms under all specified conditions.
Does MAX6719AUTSYD3+T support monitoring a third supply voltage?
Yes, MAX6719AUTSYD3+T supports third-supply monitoring via the RSTIN pin, which features a precise 626.5mV internal reference. By connecting an external resistor divider between the target supply and ground, users can configure the trip point down to 0.62V - for example, monitoring a 2.7V battery rail with R1=390kΩ and R2=100kΩ yields VEXT_TH ≈ 2.7V.
What are the voltage threshold options for VCC1 and VCC2 on MAX6719AUTSYD3+T?
The MAX6719AUTSYD3+T uses the S-suffix for VCC1 (2.850V typical, 2.850V–3.000V range) and H-suffix for VCC2 (1.275V typical, 1.275V–1.350V range). These factory-trimmed thresholds are laser-adjusted for ±1.5% accuracy and enable robust supervision of standard 3.0V I/O and 1.3V core rails without external components.
Is MAX6719AUTSYD3+T compatible with manual reset functionality?
Yes, MAX6719AUTSYD3+T includes an active-low manual-reset input (MR) with internal 50kΩ pullup to VCC1. Driving MR low forces immediate RST assertion for the full 140ms timeout period, then holds reset for that duration after MR returns high - ideal for field service recovery or test-mode initiation without MCU involvement.
What is the operating temperature range and thermal performance of MAX6719AUTSYD3+T?
MAX6719AUTSYD3+T operates from –40°C to +125°C and is packaged in SOT23-6 (U6+1) with θJA = 115°C/W on multilayer PCB. Its guaranteed reset validity down to VCC1 or VCC2 = 0.8V ensures functional reliability during cold-start or brownout conditions common in automotive and industrial deployments.
MAX6719AUTSYD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 2.188V, 2.925V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6719AUTSYD3+T FAQ
1.How can I place an order for MAX6719AUTSYD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6719AUTSYD3+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 MAX6719AUTSYD3+T reliable?
The price and inventory of MAX6719AUTSYD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6719AUTSYD3+T is usually 5 days.
3.What payment methods are accepted for MAX6719AUTSYD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6719AUTSYD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6719AUTSYD3+T?
MAX6719AUTSYD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6719AUTSYD3+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 MAX6719AUTSYD3+T?
For technical support, including MAX6719AUTSYD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6719AUTSYD3+T requirements.
6.How does Aetrix verify that MAX6719AUTSYD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6719AUTSYD3+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 MAX6719AUTSYD3+T meets industry standards.
7.What is the process for return or replacement of MAX6719AUTSYD3+T?
All MAX6719AUTSYD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6719AUTSYD3+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 MAX6719AUTSYD3+T part is unused and in its original packaging.
Return procedure for MAX6719AUTSYD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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