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Analog Devices Inc./Maxim Integrated MAX6719AUTVHD3+
- Part No.:
- MAX6719AUTVHD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6719AUTVHD3+.pdf
- Description:
- MAX6719AUTVHD3+
- Quantity:
- Payment:
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Product details
Overview
MAX6719AUTVHD3+ 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 0.62V. It asserts active-low push-pull RST during supply undervoltage or manual reset, supporting telecom power systems and battery-operated embedded controllers.
For engineers reviewing the MAX6719AUTVHD3+ datasheet, MAX6719AUTVHD3+ pinout, MAX6719AUTVHD3+ application, or MAX6719AUTVHD3+ equivalent, key selection criteria include dual-rail voltage monitoring capability, guaranteed reset validity down to VCC = 0.8V, 140ms reset timeout, RSTIN-adjustable auxiliary threshold, and AEC-Q100-qualified variants for automotive-grade reliability validation.
Technical Context
The MAX6719AUTVHD3+ integrates two independent voltage comparators with hysteresis (0.5% typical), a 140ms reset timeout timer, and a high-impedance RSTIN input referenced to a 626.5mV internal bandgap. It operates across -40°C to +125°C with supply current as low as 10µA at 3.6V.
Its push-pull RST output is referenced to VCC1 and drives low when VCC1 falls below 4.500V (threshold suffix 'V'), VCC2 drops below 1.530V (suffix 'V'), or RSTIN falls below 626.5mV - all with 20µs propagation delay and immunity to sub-100ns VCC transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 4.500V (min), 4.625V (typ), 4.750V (max) - ensures reliable reset assertion before 5V rail collapse in digital I/O subsystems |
| VCC2 Reset Threshold | 1.530V (min), 1.575V (typ), 1.620V (max) - supports core voltage monitoring for 1.6V/1.5V logic domains |
| RSTIN Threshold | 611mV–642mV - enables precise third-rail monitoring (e.g., 1.2V, 1.8V, 2.5V) via external resistor divider |
| Reset Timeout Period | 140ms (min), 210ms (typ), 280ms (max) - provides sufficient hold time for full processor initialization after power recovery |
| Supply Current | 10µA (typ) at 3.6V - minimizes quiescent load on battery-backed or energy-constrained rails |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive, industrial control, and telecom base station environments |
| Reset Output Type | Push-pull active-low RST - eliminates need for external pullup, delivers robust drive into µP reset pin with VOH ≥ 0.8×VCC1 |
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 board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts low on VCC1/VCC2/RSTIN undervoltage or MR activation |
| 2 | GND | System ground reference for all internal comparators, timers, and output drivers |
| 3 | MR | Active-low manual-reset input with 50kΩ internal pullup to VCC1; 1µs minimum pulse width required |
| 4 | VCC2 | Secondary supply input (0.9V–3.3V); powers internal VCC2 comparator and sets RST2 reference if present |
| 5 | VCC1 | Primary supply input (1.8V–5.0V); powers device core, defines RST output VOH level, and sets primary reset threshold |
| 6 | RSTIN | High-impedance adjustable reset input (626.5mV reference); monitors third rail via external resistor divider |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of VCC1 (4.5V threshold) and VCC2 (1.53V threshold) with separate comparators and hysteresis |
| Adjustable third-voltage monitor | RSTIN input with 626.5mV internal reference enables monitoring of any rail ≥0.62V using two external resistors |
| Guaranteed reset validity | Reset output remains valid even when VCC1 or VCC2 drops to 0.8V - critical for brownout detection in low-VCC scenarios |
| Low-power operation | 10µA typical supply current at 3.6V enables use in always-on battery backup circuits without significant drain |
| Transient immunity | Immune to VCC glitches <100ns duration - prevents spurious resets during switching noise or ESD events |
Applications
| Telecom Power Management | Industrial PLC Controller |
|---|---|
Use Scenario: Monitoring primary 3.3V backplane supply and secondary 1.2V FPGA core rail in carrier-grade line cards. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting RST to halt processor execution during simultaneous rail collapse or sequencing failure. Use Value: Prevents corrupted configuration writes during partial power loss, ensuring deterministic restart after AC mains interruption. |
Use Scenario: Supervising 24V DC input converted to 5V logic and 3.3V MCU supply in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Independent VCC1/VCC2 monitoring with 140ms timeout ensures safe shutdown before I/O driver latch-up occurs. Use Value: Eliminates need for discrete RC reset circuits while meeting IEC 61000-4-4 surge immunity requirements via glitch-immune architecture. |
| Automotive ADAS Camera Module | Portable Medical Sensor Hub |
Use Scenario: Validating 5V imaging sensor supply and 1.8V ISP core voltage in rear-view camera modules operating at 125°C ambient. IC Role / Device Role / Timing Role: AEC-Q100-compliant dual-supply monitor with guaranteed operation down to 0.8V VCC for cold-cranking resilience. Use Value: Enables fail-safe image pipeline reset during engine start transients without requiring external voltage translators or level shifters. |
Use Scenario: Managing battery-backed 3.3V MCU supply and 1.2V analog front-end rail in handheld ECG devices with 10-year shelf life. IC Role / Device Role / Timing Role: Ultra-low ICC (10µA typ) extends battery life while RSTIN monitors backup coin-cell voltage via precision divider. Use Value: Delivers >5000 hours of standby runtime on CR2032 cell without compromising reset accuracy or timing margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6720AUTVHD3+ | Identical pinout and electrical specs; differs only in reset timeout (140ms vs. 140ms), but uses different internal timer capacitor trimming - functionally interchangeable | No functional difference in system behavior; validated for same telecom and industrial temperature profiles | Select MAX6720AUTVHD3+ only if legacy BOM requires exact historical part number; MAX6719AUTVHD3+ offers identical performance with updated wafer lot traceability |
| TPS3808G125DBVR | Single-supply (VDD only), no VCC2 input; 1.25V fixed threshold, 200ms timeout; lower ICC (2.5µA), but lacks RSTIN adjustability and dual-rail independence | Requires external circuitry to monitor second rail; unsuitable for systems needing independent VCC1/VCC2 fault isolation | Choose TPS3808G125DBVR only for cost-sensitive single-rail applications where VCC2 supervision is handled separately; not a drop-in replacement |
Compared with MAX6720AUTVHD3+, the MAX6719AUTVHD3+ provides identical dual-rail supervision and timing but with enhanced production traceability; versus TPS3808G125DBVR, it delivers true independent dual-threshold monitoring essential for multivoltage SoC platforms without adding external components.
Availability
MAX6719AUTVHD3+ is available at Aetrix Electronics and suitable for telecom power management, industrial PLC controllers, and automotive ADAS camera modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6719AUTVHD3+ 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, sensing, and interface applications, with deep expertise in supervisory and power-management solutions.
The MAX6715A–MAX6729A family was engineered specifically for multivoltage embedded systems requiring guaranteed reset integrity across wide temperature and supply-voltage ranges - targeting telecom infrastructure, automotive electronics, and industrial automation.
FAQ
What is the exact reset timeout period for MAX6719AUTVHD3+?
The MAX6719AUTVHD3+ has a minimum reset timeout period of 140ms, typical value of 210ms, and maximum of 280ms. This timeout begins when VCC1 or VCC2 rises above its respective threshold and ensures the microprocessor remains held in reset long enough to complete internal initialization before release. The value is factory-trimmed and specified over -40°C to +125°C.
Does MAX6719AUTVHD3+ support monitoring a third voltage rail?
Yes, MAX6719AUTVHD3+ supports third-rail monitoring via its RSTIN pin, which features a precise 626.5mV internal reference. By connecting an external resistor divider between the target rail and GND, users can set custom reset thresholds down to 0.62V - enabling supervision of 1.2V, 1.8V, 2.5V, or other auxiliary supplies without additional ICs.
What is the operating voltage range for VCC1 and VCC2 on MAX6719AUTVHD3+?
MAX6719AUTVHD3+ accepts VCC1 from 1.8V to 5.0V and VCC2 from 0.9V to 3.3V. Both supplies must remain ≥0.8V for guaranteed reset output validity. The device draws power from whichever supply is higher and uses VCC1 as the reference for RST output high-level voltage (VOH ≥ 0.8×VCC1).
Is MAX6719AUTVHD3+ compatible with AEC-Q100 automotive qualification?
While MAX6719AUTVHD3+ itself is not AEC-Q100 certified, the closely related MAX6719AUTTWD1/V+T variant is explicitly qualified per AEC-Q100 Rev G. Engineers designing for automotive applications should select that variant; MAX6719AUTVHD3+ is intended for industrial and telecom use where extended temperature operation (-40°C to +125°C) is required but formal automotive qualification is not mandated.
What package type and footprint does MAX6719AUTVHD3+ use?
MAX6719AUTVHD3+ is supplied in a 6-pin SOT23 package (package code U6+1), with 1.6mm × 2.9mm body size and 0.95mm pitch. It uses standard JEDEC MO-178AC outline and land pattern number 90-0175, compatible with automated pick-and-place and reflow processes used in high-volume PCB assembly.
MAX6719AUTVHD3+ 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:
- -
MAX6719AUTVHD3+ FAQ
1.How can I place an order for MAX6719AUTVHD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6719AUTVHD3+ 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 MAX6719AUTVHD3+ reliable?
The price and inventory of MAX6719AUTVHD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6719AUTVHD3+ is usually 5 days.
3.What payment methods are accepted for MAX6719AUTVHD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6719AUTVHD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6719AUTVHD3+?
MAX6719AUTVHD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6719AUTVHD3+ 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 MAX6719AUTVHD3+?
For technical support, including MAX6719AUTVHD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6719AUTVHD3+ requirements.
6.How does Aetrix verify that MAX6719AUTVHD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6719AUTVHD3+ 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 MAX6719AUTVHD3+ meets industry standards.
7.What is the process for return or replacement of MAX6719AUTVHD3+?
All MAX6719AUTVHD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6719AUTVHD3+, 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 MAX6719AUTVHD3+ part is unused and in its original packaging.
Return procedure for MAX6719AUTVHD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6719AUTVHD3+ Tags
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