My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6724UTYHD3
- Part No.:
- MAX6724UTYHD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6724UTYHD3.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,576
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6724UTYHD3 from Maxim Integrated is a dual-voltage microprocessor supervisory IC monitoring VCC1 (primary) and VCC2 (secondary) supply rails, with factory-trimmed reset thresholds of 4.625V (VTH1) and 3.075V (VTH2), 210ms minimum reset timeout, push-pull active-low RST output, and watchdog timer support. It ensures reliable system reset during brownout conditions in telecom power systems.
For engineers reviewing the MAX6724UTYHD3 datasheet, MAX6724UTYHD3 pinout, MAX6724UTYHD3 application, or MAX6724UTYHD3 equivalent, key selection criteria include dual-rail voltage monitoring accuracy, guaranteed reset validity down to 0.8V on either supply, low 14µA typical supply current, watchdog startup timing (35s min), and SOT23-6 package compatibility with space-constrained embedded designs.
Technical Context
The MAX6724UTYHD3 integrates two independent voltage comparators with ±1.5% threshold accuracy over -40°C to +125°C, a programmable reset timeout timer (D3 = 210ms min), and a dual-mode watchdog (35s startup / 1.12s normal). Its internal logic asserts RST when either VCC1 falls below 4.625V or VCC2 drops below 3.075V, maintaining assertion for the full timeout period after recovery.
This device uses a push-pull RST output referenced to VCC1, includes an internal 50kΩ MR pullup, supports WDI-driven watchdog resets, and guarantees valid reset state even when VCC1 or VCC2 remains ≥0.8V - enabling operation during deep brownout scenarios without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 4.625V (factory-trimmed, ±1.5% over temp) - sets primary supply brownout detection point |
| VCC2 Reset Threshold | 3.075V (factory-trimmed, ±1.5% over temp) - sets secondary supply brownout detection point |
| Reset Timeout Period | 210ms (min) - ensures sufficient hold time for processor initialization after power recovery |
| Supply Current | 14µA (typ at 3.6V) - enables ultra-low-power operation in battery-backed or energy-sensitive systems |
| Operating Temperature | -40°C to +125°C - qualified for automotive under-hood and industrial control environments |
| Watchdog Timeout | 35s (min startup), 1.12s (min normal mode) - accommodates long boot sequences then enforces tight software execution monitoring |
| Reset Output Type | Push-pull, active-low RST - eliminates need for external pullup and provides rail-referenced logic drive |
Pinout & Package
Package: 6-pin SOT23 (3.0mm × 1.7mm × 1.3mm, JEDEC MO-178AA).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low reset output | Push-pull driver referenced to VCC1; asserts low on VCC1/VCC2 undervoltage or MR/WDT event |
| 2 - GND | Ground reference | Common return for all internal comparators, timers, and output drivers |
| 3 - MR | Manual-reset input | Active-low; internal 50kΩ pullup to VCC1; forces reset when pulled ≤0.3×VCC1 |
| 4 - VCC2 | Secondary supply input | Powers internal circuitry when > VCC1; input for VTH2 comparator (3.075V threshold) |
| 5 - VCC1 | Primary supply input | Main power rail; powers core logic and drives RST output; input for VTH1 comparator (4.625V threshold) |
| 6 - WDI | Watchdog input | Edge-sensitive; reset triggered if no transition occurs within 1.12s (normal mode) or 35s (startup mode) |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of VCC1 (4.625V) and VCC2 (3.075V) with separate comparators and hysteresis |
| Guaranteed reset validity down to 0.8V | Ensures deterministic RST behavior even during severe brownout - no external pullup needed for push-pull RST |
| Dual-mode watchdog timer | 35s startup window allows full system boot before enforcing 1.12s watchdog discipline on runtime code |
| Low quiescent current | 14µA typical ICC enables >10-year battery life in always-on monitoring applications |
| SOT23-6 footprint | Compact 3.0×1.7mm package reduces PCB area by >60% vs. discrete supervisor solutions |
Applications
| Telecom Power Management | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Monitoring redundant DC/DC outputs in 48V telecom shelf power systems where VCC1 = 3.3V (control logic) and VCC2 = 2.5V (interface ASIC). IC Role / Device Role / Timing Role: Dual-rail supervisor asserting RST to halt CPU execution until both rails stabilize post-fault. Use Value: Prevents corrupted register writes during partial power loss, eliminating firmware lockups in carrier-grade equipment. | Use Scenario: Supervising FPGA configuration voltage (VCCINT = 1.2V) and I/O bank voltage (VCCIO = 3.3V) in modular PLC backplanes. IC Role / Device Role / Timing Role: Ensures synchronized reset release across FPGA domains using single RST signal with 210ms timeout. Use Value: Eliminates metastability during hot-swap insertion by guaranteeing clean power sequencing before logic initialization. |
| Automotive ADAS Camera ECU | Medical Infusion Pump Controller |
Use Scenario: Validating 5V camera sensor supply and 1.8V image processor core rail in AEC-Q100-compliant vision modules. IC Role / Device Role / Timing Role: Push-pull RST directly drives microcontroller reset pin without external components; WDI monitors real-time image processing loop. Use Value: Enables fail-safe shutdown within 1.12s if image pipeline stalls - critical for ISO 26262 ASIL-B compliance. | Use Scenario: Supervising main 3.3V MCU supply and isolated 5V motor driver rail in battery-powered infusion pumps. IC Role / Device Role / Timing Role: MR input connected to emergency stop button; RST holds pump motor disabled for full 210ms after button release. Use Value: Meets IEC 62304 safety requirement for guaranteed actuator deactivation delay after user-initiated abort. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6723UTYHD3 | Same SOT23-6 package, identical 4.625V/3.075V thresholds and 210ms timeout, but open-drain RST output requiring external pullup | Requires additional 10kΩ pullup resistor and layout routing; unsuitable for direct-drive MCU reset pins | Select MAX6724UTYHD3 when push-pull RST simplifies BOM and eliminates pullup component risk |
| TPS3808G33DBVR | Single-supply supervisor (3.3V only), no VCC2 input, 200ms timeout, 2.5µA ICC - lacks dual-rail capability and watchdog | Cannot monitor secondary rail; requires separate IC for VCC2 supervision - increases board area and cost | Choose MAX6724UTYHD3 for integrated dual-rail + watchdog in space-constrained designs where TPS3808G33DBVR would require supplemental components |
Compared with MAX6723UTYHD3, MAX6724UTYHD3 eliminates external pullup dependency via push-pull RST; versus TPS3808G33DBVR, it delivers true dual-supply monitoring and watchdog functionality in one die - reducing component count by two and improving system-level reliability.
Availability
MAX6724UTYHD3 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, automotive ADAS ECUs, and medical infusion pumps requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6724UTYHD3 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 high-reliability industrial, automotive, and communications systems.
The MAX6715A–MAX6729A family delivers ultra-low-voltage, multi-rail supervision with integrated watchdog and manual reset - engineered specifically for fault-tolerant embedded systems where power integrity directly impacts functional safety.
FAQ
What is the exact reset threshold voltage for VCC1 on the MAX6724UTYHD3?
The MAX6724UTYHD3 has a factory-trimmed VCC1 reset threshold of 4.625V (±1.5% over -40°C to +125°C). This value is fixed per the "YH" suffix in the part number and is confirmed in the Reset Voltage Threshold Suffix Guide. The threshold is referenced to the internal bandgap and does not require external calibration.
Does the MAX6724UTYHD3 support monitoring a third voltage rail?
No, the MAX6724UTYHD3 is a dual-supply supervisor and does not include the RSTIN input required for adjustable third-rail monitoring. That feature is present only in variants like MAX6723A/MAX6724A with "RSTIN" pin (e.g., MAX6723UTYHD3 has RSTIN; MAX6724UTYHD3 does not). The MAX6724UTYHD3 monitors only VCC1 and VCC2.
What is the function of the WDI pin on the MAX6724UTYHD3?
The WDI (Watchdog Input) pin on the MAX6724UTYHD3 monitors microprocessor activity: if no rising or falling edge occurs within 1.12s (normal mode) or 35s (startup mode), it triggers a reset pulse for the full 210ms timeout period. WDI must be left floating to disable the watchdog; connecting it to any node sourcing >50nA may cause malfunction.
Can the MAX6724UTYHD3 operate with VCC1 = 2.8V?
Yes, the MAX6724UTYHD3 operates with VCC1 as low as 0.8V and up to 5.5V. At VCC1 = 2.8V, the 4.625V VTH1 threshold is invalid (exceeds supply), but the device remains functional for VCC2 supervision (3.075V threshold) and MR/WDI features. However, VCC1 must exceed VTH1 to avoid spurious reset - so 2.8V VCC1 is outside intended use for primary rail monitoring.
Is the MAX6724UTYHD3 RoHS-compliant and lead-free?
Yes, the MAX6724UTYHD3 is RoHS-compliant and lead-free, indicated by the "+T" suffix in its full ordering code (e.g., MAX6724UTYHD3+T). The SOT23-6 package meets JEDEC J-STD-020 moisture sensitivity level 1 and is compatible with standard reflow profiles.
MAX6724UTYHD3 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:
- 1.313V, 2.188V, Adj
- Output:
- Push-Pull, Totem Pole
- 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
MAX6724UTYHD3 FAQ
1.How can I place an order for MAX6724UTYHD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6724UTYHD3 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 MAX6724UTYHD3 reliable?
The price and inventory of MAX6724UTYHD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6724UTYHD3 is usually 5 days.
3.What payment methods are accepted for MAX6724UTYHD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6724UTYHD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6724UTYHD3?
MAX6724UTYHD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6724UTYHD3 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 MAX6724UTYHD3?
For technical support, including MAX6724UTYHD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6724UTYHD3 requirements.
6.How does Aetrix verify that MAX6724UTYHD3 is sourced from the original manufacturer or authorized distributors?
All MAX6724UTYHD3 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 MAX6724UTYHD3 meets industry standards.
7.What is the process for return or replacement of MAX6724UTYHD3?
All MAX6724UTYHD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6724UTYHD3, 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 MAX6724UTYHD3 part is unused and in its original packaging.
Return procedure for MAX6724UTYHD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6724UTYHD3 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…
