My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6719UTZWD3
- Part No.:
- MAX6719UTZWD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6719UTZWD3.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:617
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6719UTZWD3 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 open-drain active-low RST output. It ensures reliable system reset during power-up, brownout, or manual intervention in multivoltage embedded systems.
For engineers reviewing the MAX6719UTZWD3 datasheet, MAX6719UTZWD3 pinout, MAX6719UTZWD3 application, or MAX6719UTZWD3 equivalent, this device delivers verified dual-supply monitoring with externally adjustable third-voltage detection, watchdog timer support, manual reset input, and guaranteed reset validity down to VCC1 or VCC2 = 0.8V - critical for low-power industrial and telecom designs.
Technical Context
The MAX6719UTZWD3 implements independent voltage comparators for VCC1 (4.625V threshold), VCC2 (3.075V threshold), and RSTIN (626.5mV internal reference), each feeding into a shared reset timeout timer with 210ms minimum assertion period. Its open-drain RST output requires external pullup and remains asserted until all monitored voltages exceed their thresholds and the timeout elapses.
It integrates a manual reset input (MR) with 50kΩ internal pullup to VCC1 and supports watchdog functionality via WDI pin, featuring dual-mode timing: 35s startup window after reset and 1.12s normal timeout. The device operates across -40°C to +85°C and draws only 14µA typical supply current at 3.6V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 4.625V (factory-trimmed, ±125mV tolerance); sets primary supply brownout detection point for 5V/4.8V rails |
| VCC2 Reset Threshold | 3.075V (factory-trimmed, ±75mV tolerance); enables reliable monitoring of 3.3V I/O or auxiliary supplies |
| RSTIN Threshold | 626.5mV (internal reference); allows external resistor divider to monitor third supply down to 0.62V |
| Reset Timeout Period | 210ms (minimum); ensures µP completes initialization before release from reset state |
| Supply Current | 14µA typical at 3.6V; enables battery-backed or ultra-low-power operation without compromising supervision integrity |
| Operating Temperature | -40°C to +85°C; qualified for industrial-grade deployment in telecom, computing, and embedded equipment |
| Reset Output Type | Open-drain active-low RST; compatible with bidirectional µP reset pins and flexible level-shifting via external pullup |
Pinout & Package
MAX6719UTZWD3 is housed in a 6-pin SOT23-6 package (2.9mm × 1.6mm × 1.1mm), optimized for space-constrained PCB layouts in portable and high-density systems.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low open-drain reset output; asserts when any monitored supply drops below threshold or MR is pulled low |
| 2 | GND | Analog/digital ground reference; must be connected to system common ground plane for accurate threshold sensing |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC1 (50kΩ); initiates reset on logic-low pulse ≥1µs |
| 4 | VCC2 | Secondary supply input; powers internal circuitry when > VCC1 and sets VCC2 comparator reference (3.075V) |
| 5 | VCC1 | Primary supply input; powers device when > VCC2 and sets VCC1 comparator reference (4.625V) |
| 6 | RSTIN | Adjustable undervoltage monitor input; referenced to 626.5mV internal bandgap; enables third-supply monitoring via resistor divider |
Key Features
| Feature | Design Value |
|---|---|
| Triple-supply monitoring | Simultaneous supervision of VCC1, VCC2, and RSTIN enables full-system power integrity verification in SoC and FPGA platforms |
| Guaranteed reset validity down to 0.8V | Ensures correct reset assertion even during deep brownout conditions where VCC1 or VCC2 falls to 0.8V |
| Watchdog timer with dual-mode timing | 35s startup window allows complex boot sequences; 1.12s normal timeout detects software hangs post-initialization |
| Immunity to short VCC transients | Rejects glitches ≤20µs (at 100mV overdrive), preventing spurious resets in noisy power environments |
| Low 14µA supply current | Minimizes standby power draw in battery-operated devices while maintaining full supervision capability |
Applications
| Telecom Power Sequencing | Industrial PLC Controller |
|---|---|
|
Use Scenario: Monitoring 48V-to-5V DC/DC converter output (VCC1), isolated 3.3V I/O rail (VCC2), and 1.2V FPGA core supply (via RSTIN). IC Role / Device Role / Timing Role: Triple-voltage supervisor enforcing strict power-up order and detecting undervoltage faults across three domains. Use Value: Prevents configuration corruption in FPGAs by holding reset until all rails stabilize within ±3% of nominal values. |
Use Scenario: Supervising 24V system rail (VCC1), 5V logic supply (VCC2), and 3.3V microcontroller core (RSTIN) in DIN-rail mounted PLC. IC Role / Device Role / Timing Role: Fault-detection engine asserting reset on any rail collapse, with MR enabling field-service recovery. Use Value: Eliminates need for discrete RC reset circuits and reduces BOM count by integrating three monitors in one 6-pin package. |
| Network Switch ASIC Boot | Medical Diagnostic Handheld |
|
Use Scenario: Validating 12V PoE input (VCC1), 3.3V SerDes supply (VCC2), and 1.8V PHY core (RSTIN) during ASIC cold start. IC Role / Device Role / Timing Role: System-level power integrity gatekeeper ensuring ASIC enters configuration mode only after stable multi-rail power. Use Value: 210ms timeout matches ASIC firmware handshake window; open-drain RST interfaces directly to bidirectional reset pin. |
Use Scenario: Monitoring main Li-ion battery rail (VCC1), regulated 3.3V sensor interface (VCC2), and 1.1V ADC reference (RSTIN) in portable ultrasound unit. IC Role / Device Role / Timing Role: Low-power health monitor enabling graceful shutdown when battery drops below 3.2V (VCC1 threshold). Use Value: 14µA quiescent current extends battery life; MR button allows user-initiated recalibration without full power cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6720UTZWD3 | Push-pull RST output instead of open-drain; identical thresholds, timeout, and pinout | Requires no external pullup; incompatible with bidirectional µP reset pins without series resistor | Select MAX6720UTZWD3 when driving CMOS inputs directly or when board layout prohibits external pullup placement |
| TPS3808G33DBVR | Dual-supply monitor only (VDD, VDDIO); no RSTIN input; fixed 3.3V threshold; 200ms timeout | Lacks third-supply monitoring capability; suitable only for simpler two-rail systems | Choose TPS3808G33DBVR for cost-sensitive dual-rail applications where RSTIN functionality is unnecessary |
Compared with MAX6720UTZWD3 and TPS3808G33DBVR, the MAX6719UTZWD3 uniquely supports adjustable third-supply monitoring in an open-drain configuration - essential for FPGA, ASIC, and multicore SoC power sequencing where flexibility and compatibility outweigh minor layout trade-offs.
Availability
MAX6719UTZWD3 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and medical handhelds requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MAX6719UTZWD3 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 precision analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MAX6715–MAX6729 family was designed specifically for multivoltage system supervision in space-constrained, low-power embedded applications - delivering integrated triple-monitoring, watchdog, and manual reset in sub-3mm packages.
FAQ
What are the factory-trimmed reset thresholds for MAX6719UTZWD3?
The MAX6719UTZWD3 has factory-trimmed VCC1 and VCC2 reset thresholds of 4.625V and 3.075V respectively, with ±125mV and ±75mV tolerances over temperature. These values are encoded in the "ZW" suffix per Maxim's Reset Voltage Threshold Suffix Guide and are confirmed in the Electrical Characteristics table of the official datasheet.
Does MAX6719UTZWD3 support watchdog functionality?
Yes, MAX6719UTZWD3 includes a watchdog input (WDI) with dual-mode timing: a 35s minimum startup period after reset and a 1.12s minimum normal timeout period. This allows safe boot completion followed by rapid fault detection during runtime - fully documented in the Watchdog Input section of the datasheet.
What is the function of the RSTIN pin on MAX6719UTZWD3?
The RSTIN pin on MAX6719UTZWD3 is a high-impedance input referenced to a 626.5mV internal bandgap voltage, enabling external resistor-divider networks to monitor a third supply as low as 0.62V. When RSTIN falls below threshold, it triggers the same reset assertion and timeout behavior as VCC1 or VCC2 faults.
Is MAX6719UTZWD3 pin-compatible with other parts in the MAX6715–MAX6729 family?
MAX6719UTZWD3 uses the 6-pin SOT23-6 package and shares identical pinout with MAX6715, MAX6716, MAX6719, MAX6720, and MAX6721 variants. However, functional differences exist - e.g., MAX6719UTZWD3 provides RSTIN but no PFI/PFO, while MAX6728/29 add power-fail monitoring. Always verify feature alignment per Selector Guide.
What is the minimum operating voltage guarantee for MAX6719UTZWD3 reset assertion?
MAX6719UTZWD3 guarantees valid reset output logic state down to VCC1 or VCC2 = 0.8V - meaning the RST pin will correctly assert low even when either supply collapses to 0.8V. This is explicitly specified in the Absolute Maximum Ratings and Detailed Description sections of the datasheet.
MAX6719UTZWD3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 1.665V, 2.313V, 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
MAX6719UTZWD3 FAQ
1.How can I place an order for MAX6719UTZWD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6719UTZWD3 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 MAX6719UTZWD3 reliable?
The price and inventory of MAX6719UTZWD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6719UTZWD3 is usually 5 days.
3.What payment methods are accepted for MAX6719UTZWD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6719UTZWD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6719UTZWD3?
MAX6719UTZWD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6719UTZWD3 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 MAX6719UTZWD3?
For technical support, including MAX6719UTZWD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6719UTZWD3 requirements.
6.How does Aetrix verify that MAX6719UTZWD3 is sourced from the original manufacturer or authorized distributors?
All MAX6719UTZWD3 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 MAX6719UTZWD3 meets industry standards.
7.What is the process for return or replacement of MAX6719UTZWD3?
All MAX6719UTZWD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6719UTZWD3, 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 MAX6719UTZWD3 part is unused and in its original packaging.
Return procedure for MAX6719UTZWD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6719UTZWD3 Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
