My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6724UTTGD3+T
- Part No.:
- MAX6724UTTGD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6724UTTGD3+T.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,567
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6724UTTGD3+T from Maxim Integrated is a triple-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (1.8V–5.0V), VCC2 (0.9V–3.3V), and an externally adjustable RSTIN input down to 0.626V. It provides push-pull active-low reset output with 210ms (min) timeout, watchdog timer (35s startup / 1.12s normal), and manual reset input - used in multivoltage embedded systems requiring reliable power-up sequencing and brownout protection.
For engineers reviewing the MAX6724UTTGD3+T datasheet, MAX6724UTTGD3+T pinout, MAX6724UTTGD3+T application, or MAX6724UTTGD3+T equivalent, key selection criteria include dual-supply threshold accuracy (±1.5% typical), guaranteed reset validity down to VCC1/VCC2 = 0.8V, low 14µA supply current, immunity to sub-20µs VCC transients, and compatibility with battery-backed industrial controllers.
Technical Context
The MAX6724UTTGD3+T implements a dual-threshold comparator architecture for independent VCC1 and VCC2 monitoring, plus a dedicated 626mV reference-based RSTIN comparator for third-voltage supervision. Its reset logic asserts RST low when any monitored voltage falls below its factory-trimmed threshold and holds for a fixed 210ms minimum timeout after all thresholds are re-exceeded.
This device integrates a dual-mode watchdog timer: a 35s minimum startup period enables full system boot before watchdog enforcement begins, followed by a 1.12s minimum normal timeout triggered by WDI edge transitions. Manual reset (MR) features internal 50kΩ pullup and 200ns MR-to-reset delay, while reset output is push-pull referenced to VCC1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.625V (typ), factory-trimmed ±1.5% - ensures precise primary supply monitoring for 5V/3.3V logic rails |
| VCC2 Threshold | 3.075V (typ), factory-trimmed ±1.5% - matches common secondary I/O supply levels |
| RSTIN Threshold | 626.5mV (typ), internal reference - enables accurate third-voltage monitoring via external resistor divider |
| Reset Timeout | 210ms (min) - guarantees sufficient hold time for processor initialization and peripheral stabilization |
| Supply Current | 14µA (typ) at 3.6V - supports ultra-low-power battery operation over full -40°C to +85°C range |
| Watchdog Period | 35s (min) startup / 1.12s (min) normal - accommodates complex boot sequences then enforces runtime software health checks |
| Reset Validity | Down to VCC1 or VCC2 = 0.8V - maintains functional reset assertion during deep brownout conditions |
Pinout & Package
MAX6724UTTGD3+T is housed in a 6-pin SOT23-6 package with gull-wing leads, 1.27mm pitch, and thermal pad omitted. The package supports reflow soldering per JEDEC J-STD-020 and operates across -40°C to +85°C ambient.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; sinks 3.2mA at VCC1 ≥ 4.5V; asserts on VCC1/VCC2/RSTIN undervoltage or MR low |
| 2 | GND | Analog/digital ground reference for all comparators and internal logic; must be low-impedance connection |
| 3 | MR | Active-low manual reset input with internal 50kΩ pullup to VCC1; 1µs minimum pulse width; immune to <100ns glitches |
| 4 | VCC2 | Secondary supply input (0.9V–3.3V); powers internal VCC2 comparator and sets RST2 reference if enabled |
| 5 | WDI | Watchdog input; rising/falling edges clear 1.12s timeout; long idle (>35s) triggers initial watchdog mode |
| 6 | VCC1 | Primary supply input (1.8V–5.0V); powers core logic, sets RST output reference, and enables reset assertion below 4.625V |
Key Features
| Feature | Design Value |
|---|---|
| Dual factory-trimmed voltage monitors | VCC1 = 4.625V ±1.5%, VCC2 = 3.075V ±1.5% - eliminates external resistor networks for standard rail supervision |
| Externally adjustable third-voltage monitor | RSTIN with 626.5mV internal reference - supports custom thresholds from 0.62V using two resistors, drawing <25nA |
| Dual-mode watchdog timer | 35s startup + 1.12s normal timeout - prevents false resets during boot while ensuring rapid fault detection in steady-state |
| Guaranteed reset validity at low VCC | Functional reset assertion down to VCC1 or VCC2 = 0.8V - critical for brownout recovery in portable equipment |
| Push-pull RST output | VOL ≤ 0.4V @ 3.2mA sink, VOH ≥ 0.8×VCC1 - drives CMOS/TTL loads directly without external pullup |
Applications
| Industrial PLC Controller | Portable Medical Monitor |
|---|---|
Use Scenario: Monitors 5V main logic rail, 3.3V I/O rail, and 1.2V FPGA core supply in a DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Triple-supply supervisor asserting active-low reset to ARM Cortex-M7 MCU and FPGA configuration logic during brownout or power sequencing faults. Use Value: Prevents partial initialization and state corruption by holding reset until all three rails stabilize above 4.625V, 3.075V, and 1.2V respectively - enforced by 210ms timeout and 0.8V reset validity floor. | Use Scenario: Supervises battery-backed 3.3V microcontroller supply, 1.8V sensor interface rail, and 0.9V ADC reference in handheld ECG device. IC Role / Device Role / Timing Role: Ensures safe shutdown and restart by triggering reset when Li-ion battery drops below 3.0V (via RSTIN divider), while maintaining valid reset signal down to 0.8V VCC1. Use Value: Enables reliable low-battery detection and graceful firmware save before power loss, leveraging 626.5mV RSTIN reference and 14µA quiescent current for extended standby life. |
| Telecom Line Card | Automotive Infotainment Head Unit |
Use Scenario: Validates 12V-to-3.3V DC/DC output, 5V USB PHY rail, and 1.1V DDR memory supply in carrier-grade Ethernet switch line card. IC Role / Device Role / Timing Role: Dual-threshold supervisor with manual reset and watchdog, interfacing to PowerPC processor via bidirectional reset pin through 4.7kΩ isolation resistor. Use Value: Eliminates need for discrete supervisors and RC networks, reducing BOM count by 3 components while providing glitch-immune reset (20µs transient rejection) and deterministic 210ms hold time. | Use Scenario: Monitors 5V infotainment SoC supply, 3.3V display interface rail, and backup 3.0V RTC supply in automotive head unit with CAN bus connectivity. IC Role / Device Role / Timing Role: Triple-voltage supervisor with watchdog feeding SoC WDI pin, enabling automatic recovery from firmware hangs without user intervention. Use Value: Guarantees system reliability under automotive load-dump and cold-crank conditions via 0.8V reset validity and 35s watchdog startup window accommodating full Linux boot sequence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6720UTTGD3+T | Same pinout and timing, but open-drain RST output instead of push-pull; requires external pullup resistor | Suitable where level-shifting or wired-OR reset bus is needed; not direct replacement if driving heavy capacitive loads | Select MAX6720UTTGD3+T only when open-drain topology is required for system-level reset arbitration |
| TPS3808G33DBVR | Single-supply monitor (3.3V only), no RSTIN or WDI; 200ms timeout; 2.5µA IQ | Lacks triple-monitor capability and watchdog; intended for simpler single-rail applications | Choose TPS3808G33DBVR only for cost-sensitive designs needing only 3.3V supervision without auxiliary inputs |
Compared with MAX6720UTTGD3+T and TPS3808G33DBVR, the MAX6724UTTGD3+T uniquely delivers push-pull RST drive strength, integrated RSTIN-based third-voltage monitoring, and dual-mode watchdog - making it the only option among the three capable of full triple-supply supervision with autonomous runtime health checking in compact SOT23-6.
Availability
MAX6724UTTGD3+T is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, telecom line cards, and automotive infotainment head units requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6724UTTGD3+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, sensing, and connectivity applications, with emphasis on high-reliability industrial and automotive solutions.
The MAX6715–MAX6729 family delivers ultra-low-voltage, multi-rail microprocessor supervision targeting space-constrained embedded systems where power integrity, brownout resilience, and autonomous fault recovery are critical.
FAQ
What is the exact reset timeout period of the MAX6724UTTGD3+T?
The MAX6724UTTGD3+T has a minimum reset timeout period of 210ms, as indicated by the "D3" suffix in its part number. This is the guaranteed minimum duration for which the RST output remains asserted after all monitored supplies (VCC1, VCC2, RSTIN) rise above their respective thresholds. Typical timeout is 210ms, with maximum specified at 280ms across temperature and voltage ranges.
Does the MAX6724UTTGD3+T support monitoring a 1.2V core supply as the third voltage?
Yes, the MAX6724UTTGD3+T supports monitoring a 1.2V core supply via its RSTIN pin using an external resistor divider. With the internal 626.5mV reference, a divider ratio of R1/R2 = (1.2V / 0.6265V) − 1 ≈ 0.913 sets the trip point precisely at 1.2V. The RSTIN input draws less than ±25nA, enabling high-resistance dividers to minimize power loss.
Is the MAX6724UTTGD3+T compatible with a 5V microcontroller's reset pin?
Yes, the MAX6724UTTGD3+T is fully compatible with 5V microcontrollers. Its push-pull RST output is referenced to VCC1 and guarantees VOH ≥ 0.8×VCC1 and VOL ≤ 0.4V at 3.2mA sink - meeting standard 5V TTL/CMOS input thresholds. No level-shifter or pullup resistor is required when VCC1 = 5V.
How does the watchdog timer behave during system power-up?
The MAX6724UTTGD3+T watchdog timer enters a 35s minimum startup mode after any reset event (power-on, brownout, MR, or watchdog timeout). During this period, the WDI input is ignored for timeout purposes. Only after the first valid WDI edge does the timer switch to 1.12s normal mode - preventing spurious resets during boot.
What is the lowest supply voltage at which the MAX6724UTTGD3+T guarantees correct reset output logic?
The MAX6724UTTGD3+T guarantees correct reset output logic state down to VCC1 or VCC2 = 0.8V. Below this voltage, reset behavior is not specified. This ensures reliable assertion of the RST signal even during severe brownout conditions, supporting fail-safe operation in battery-powered and automotive applications.
MAX6724UTTGD3+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:
- 1.11V, 3.075V, 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-6
MAX6724UTTGD3+T FAQ
1.How can I place an order for MAX6724UTTGD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6724UTTGD3+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 MAX6724UTTGD3+T reliable?
The price and inventory of MAX6724UTTGD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6724UTTGD3+T is usually 5 days.
3.What payment methods are accepted for MAX6724UTTGD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6724UTTGD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6724UTTGD3+T?
MAX6724UTTGD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6724UTTGD3+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 MAX6724UTTGD3+T?
For technical support, including MAX6724UTTGD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6724UTTGD3+T requirements.
6.How does Aetrix verify that MAX6724UTTGD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6724UTTGD3+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 MAX6724UTTGD3+T meets industry standards.
7.What is the process for return or replacement of MAX6724UTTGD3+T?
All MAX6724UTTGD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6724UTTGD3+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 MAX6724UTTGD3+T part is unused and in its original packaging.
Return procedure for MAX6724UTTGD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6724UTTGD3+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…
