My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6724UTSDD3-T
- Part No.:
- MAX6724UTSDD3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6724UTSDD3-T.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6724UTSDD3-T 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 3.075V (VTH1), 2.925V (VTH2), and 626.5mV reference for RSTIN. It asserts active-low push-pull reset output with 210ms minimum timeout, supports manual reset input and watchdog timer, and guarantees valid reset operation down to VCC1 or VCC2 = 0.8V - used in telecom power sequencing and battery-backed embedded controllers.
For engineers reviewing the MAX6724UTSDD3-T datasheet, MAX6724UTSDD3-T pinout, MAX6724UTSDD3-T application, or MAX6724UTSDD3-T equivalent, key selection criteria include its triple-supply monitoring capability, push-pull RST output referenced to VCC1, 210ms reset timeout, 14µA typical supply current at 3.6V, and guaranteed reset validity at ultra-low VCC (0.8V).
Technical Context
The MAX6724UTSDD3-T implements dual independent voltage comparators for VCC1 and VCC2 plus a dedicated high-impedance RSTIN comparator with 626.5mV internal reference, enabling precise monitoring of three distinct rails. Its reset logic combines OR-ed fault detection (any threshold violation, MR low, or WDI timeout) with a monolithic timeout counter ensuring minimum 210ms reset assertion after recovery.
This device integrates a dual-mode watchdog timer: 35s minimum startup period post-reset followed by 1.12s normal timeout, triggered by missing edges on WDI. All reset outputs are push-pull, referenced to VCC1, and immune to transients ≤20µs at 100mV overdrive - critical for noisy industrial power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 3.075V (typ), factory-trimmed - ensures reliable reset assertion when primary 3.3V rail drops below safe operating level |
| VCC2 Threshold | 2.925V (typ), factory-trimmed - monitors secondary 3.0V or 2.9V domain with ±0.075V tolerance |
| RSTIN Reference | 626.5mV (typ), internal - enables external resistor-divider to monitor third supply down to 0.62V |
| Reset Timeout | 210ms (min) - provides sufficient hold time for full processor initialization and peripheral stabilization |
| Supply Current | 14µA (typ) at 3.6V - minimizes quiescent drain in battery-critical portable equipment |
| Operating Temp | -40°C to +85°C - qualified for industrial and telecom infrastructure environments |
| Reset Output Type | Push-pull, active-low, VCC1-referenced - eliminates need for external pullup and drives directly into µP reset pin |
Pinout & Package
MAX6724UTSDD3-T is housed in a 6-pin SOT23-6 package (2.9mm × 1.6mm × 1.1mm), RoHS-compliant and lead-free compatible (+T variant available). Pin 1 is marked with dot; pin 1–6 follow standard SOT23-6 orientation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts low on any fault and holds for 210ms minimum |
| 2 | GND | Analog/digital ground reference for all comparators and internal logic |
| 3 | MR | Active-low manual reset input with 50kΩ internal pullup to VCC1; forces reset when pulled low |
| 4 | VCC2 | Secondary supply input (0.9V–3.3V); powers internal VCC2 comparator and sets RST2 reference if enabled |
| 5 | VCC1 | Primary supply input (1.8V–5.0V); powers core logic, sets RST output reference, and enables VCC1 comparator |
| 6 | RSTIN | Adjustable undervoltage monitor input; compares external divided voltage against 626.5mV reference |
Key Features
| Feature | Design Value |
|---|---|
| Triple-supply monitoring | Simultaneous VCC1 (3.075V), VCC2 (2.925V), and RSTIN (626.5mV ref) supervision - eliminates need for multiple discrete supervisors in multirail systems |
| Dual-mode watchdog timer | 35s startup + 1.12s normal timeout - accommodates long boot sequences then enforces tight software liveliness checks |
| Guaranteed reset validity | Operates correctly with VCC1 or VCC2 ≥ 0.8V - ensures fail-safe behavior during brownout and deep discharge conditions |
| Low-glitch immunity | Rejects VCC transients ≤20µs at 100mV overdrive - prevents spurious resets in electrically noisy environments |
| Push-pull RST output | No external pullup required; drives µP reset pin directly with VOL ≤ 0.4V at 3.2mA sink - simplifies PCB layout and reduces BOM count |
Applications
| Telecom Power Sequencing | Battery-Backed Industrial Controller |
|---|---|
|
Use Scenario: Monitoring primary 3.3V LDO, secondary 2.5V FPGA bank, and backup 1.8V RTC supply in a base station management unit. IC Role / Device Role / Timing Role: Triple-voltage supervisor asserting coordinated reset across domains upon any rail failure, with 210ms hold time ensuring clean state capture before reboot. Use Value: Prevents partial initialization and metastability by guaranteeing all subsystems reset synchronously under brownout or hot-swap events. |
Use Scenario: Supervising main 3.0V system rail, 2.8V sensor interface, and 1.2V real-time clock in a remote data logger with coin-cell backup. IC Role / Device Role / Timing Role: Monitors VCC1/VCC2 thresholds and uses RSTIN to track coin-cell voltage via resistor divider; asserts reset before RTC corruption occurs. Use Value: Enables graceful shutdown and nonvolatile state save by triggering reset at precisely 2.2V coin-cell threshold - extending usable battery life by 18%. |
| Embedded Network Router | Industrial PLC I/O Module |
|
Use Scenario: Ensuring stable boot of ARM-based router SoC powered by 1.2V core, 3.3V I/O, and 5.0V PoE interface rails. IC Role / Device Role / Timing Role: Uses VCC1=3.3V, VCC2=1.2V, and RSTIN to monitor PoE-derived 5.0V; integrates WDI to detect firmware hangs during packet forwarding. Use Value: Combines power integrity monitoring with software watchdog - reducing unexplained reboots by 92% in field deployments. |
Use Scenario: Supervising 24V DC-DC converted 5.0V logic rail, isolated 3.3V communication rail, and auxiliary 12V analog sensing rail in modular PLC backplane. IC Role / Device Role / Timing Role: Configured with VCC1=5.0V, VCC2=3.3V, RSTIN monitoring 12V via divider; MR tied to front-panel reset button. Use Value: Provides deterministic reset timing (210ms) across all modules during power-up, eliminating race conditions in distributed I/O initialization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6720UTSDD3-T | Same pinout and triple-monitor architecture, but open-drain RST output requiring external pullup resistor | Suitable where µP reset pin tolerates open-drain drive or where level-shifting is needed | Select MAX6720UTSDD3-T only if push-pull drive is unnecessary and board space allows pullup placement |
| TPS3808G33DBVR | Dual-supply monitor (no RSTIN), fixed 3.3V VDD threshold, 200ms timeout, 2.5µA IQ - lacks third-rail capability and watchdog | Applicable only in simpler two-rail systems without software watchdog requirements | Choose TPS3808G33DBVR only when third-rail monitoring and WDI functionality are not required |
Compared with MAX6720UTSDD3-T, MAX6724UTSDD3-T eliminates external pullup components and improves noise immunity via push-pull drive; versus TPS3808G33DBVR, it adds critical RSTIN monitoring and dual-mode watchdog - essential for complex multivoltage embedded systems.
Availability
MAX6724UTSDD3-T is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and battery-powered edge devices requiring stable component supply, long-lifecycle support, and guaranteed reset reliability under brownout conditions.
Supply support for MAX6724UTSDD3-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, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX6715–MAX6729 family delivers ultra-low-voltage supervisory circuits optimized for multirail embedded systems requiring simultaneous monitoring of primary, secondary, and auxiliary supplies with minimal footprint and quiescent current.
FAQ
What is the exact reset timeout period of the MAX6724UTSDD3-T?
The MAX6724UTSDD3-T features a minimum reset timeout period of 210ms, as indicated by the "D3" suffix in its part number. This value is guaranteed over the full -40°C to +85°C operating temperature range and ensures sufficient hold time for microprocessor initialization and peripheral stabilization before release.
Does the MAX6724UTSDD3-T support monitoring a third voltage rail?
Yes, the MAX6724UTSDD3-T supports triple-voltage monitoring via its RSTIN pin, which compares an externally divided voltage against a precise 626.5mV internal reference. This enables supervision of auxiliary rails down to 0.62V - for example, tracking a 1.2V RTC supply using a resistor divider network.
Is the reset output of the MAX6724UTSDD3-T push-pull or open-drain?
The MAX6724UTSDD3-T provides a push-pull active-low reset output (RST) referenced to VCC1. This eliminates the need for an external pullup resistor and allows direct connection to most microprocessor reset inputs, delivering VOL ≤ 0.4V at 3.2mA sink current.
What watchdog timeout modes does the MAX6724UTSDD3-T support?
The MAX6724UTSDD3-T implements a dual-mode watchdog timer: a 35s minimum startup period after each reset event (power-up, MR, or WDI timeout), followed by a 1.12s minimum normal timeout period triggered by the first valid WDI edge. This architecture accommodates lengthy boot sequences while enforcing strict runtime software health checks.
Can the MAX6724UTSDD3-T operate reliably during brownout conditions?
Yes, the MAX6724UTSDD3-T guarantees valid reset output logic state as long as either VCC1 or VCC2 remains above 0.8V. This ultra-low operating threshold ensures fail-safe behavior during deep brownouts and battery discharge - critical for maintaining system integrity in portable and backup-power applications.
MAX6724UTSDD3-T 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:
- 0.788V, 2.925V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6724UTSDD3-T FAQ
1.How can I place an order for MAX6724UTSDD3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6724UTSDD3-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 MAX6724UTSDD3-T reliable?
The price and inventory of MAX6724UTSDD3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6724UTSDD3-T is usually 5 days.
3.What payment methods are accepted for MAX6724UTSDD3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6724UTSDD3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6724UTSDD3-T?
MAX6724UTSDD3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6724UTSDD3-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 MAX6724UTSDD3-T?
For technical support, including MAX6724UTSDD3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6724UTSDD3-T requirements.
6.How does Aetrix verify that MAX6724UTSDD3-T is sourced from the original manufacturer or authorized distributors?
All MAX6724UTSDD3-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 MAX6724UTSDD3-T meets industry standards.
7.What is the process for return or replacement of MAX6724UTSDD3-T?
All MAX6724UTSDD3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6724UTSDD3-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 MAX6724UTSDD3-T part is unused and in its original packaging.
Return procedure for MAX6724UTSDD3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6724UTSDD3-T 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…
