My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6724UTTGD3+
- Part No.:
- MAX6724UTTGD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6724UTTGD3+.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,431
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6724UTTGD3+ from Maxim Integrated is a triple-voltage microprocessor supervisory circuit in 6-pin SOT23 package, monitoring VCC1 (1.8V–5.0V), VCC2 (0.9V–3.3V), and an externally adjustable third supply via RSTIN (threshold = 626.5 mV). It asserts active-low push-pull reset output with 210 ms (min) timeout and supports manual reset input and watchdog timer. Used in multivoltage embedded systems requiring reliable power-up sequencing and brownout protection.
For engineers reviewing the MAX6724UTTGD3+ datasheet, MAX6724UTTGD3+ pinout, MAX6724UTTGD3+ application, or MAX6724UTTGD3+ equivalent, key selection criteria include its triple-supply monitoring capability, guaranteed reset validity down to VCC1/VCC2 = 0.8 V, push-pull RST output referenced to VCC1, 14 µA typical supply current at 3.6 V, and factory-trimmed dual-threshold architecture with D3 timeout suffix.
Technical Context
The MAX6724UTTGD3+ implements a dual-threshold voltage monitor for primary (VCC1) and secondary (VCC2) supplies plus a high-impedance RSTIN input for third-supply monitoring using an internal 626.5 mV reference. Its reset logic remains valid as long as either VCC1 or VCC2 exceeds 0.8 V, enabling robust operation during deep brownouts.
It integrates a dual-mode watchdog timer with 35 s (min) startup period and 1.12 s (min) normal timeout, triggered by WDI edge transitions. The push-pull RST output is referenced to VCC1, while MR features a 50 kΩ internal pullup and 200 ns MR-to-reset delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | Factory-trimmed; suffix "TG" = 3.075 V typical (±1.5% over temp), enabling precise 3.3 V rail supervision |
| VCC2 Reset Threshold | Factory-trimmed; suffix "D" = 3.075 V typical (±1.5% over temp), matching common 3.3 V I/O supply |
| RSTIN Threshold | 626.5 mV internal reference (±2.5 mV), allowing external resistor-divider to set third-supply trip point down to 0.62 V |
| Reset Timeout Period | D3 suffix = 210 ms minimum, ensuring sufficient hold time for slow-starting processors or peripherals |
| Supply Current | 14 µA typical at 3.6 V, minimizing quiescent load on battery-backed or low-power rails |
| Operating Temperature | -40°C to +85°C, qualified for industrial and telecom equipment environments |
| Reset Output Type | Active-low push-pull RST referenced to VCC1, eliminating need for external pullup and supporting direct µP reset pin drive |
Pinout & Package
MAX6724UTTGD3+ uses a 6-pin SOT23-6 package (2.9 mm × 1.6 mm × 1.1 mm) with gull-wing leads, optimized for space-constrained PCB layouts in portable and industrial applications.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts when any monitored supply falls below threshold or MR is pulled low |
| 2 | GND | Analog/digital ground reference for all internal comparators and logic |
| 3 | MR | Active-low manual reset input with 50 kΩ internal pullup to VCC1; 1 µs minimum pulse width required |
| 4 | VCC2 | Secondary supply input (0.9 V–3.3 V); powers internal circuitry when > VCC1 and sets VCC2 threshold reference |
| 5 | VCC1 | Primary supply input (1.8 V–5.0 V); powers device when > VCC2 and sets VCC1 threshold reference |
| 6 | RSTIN | High-impedance adjustable reset input; monitors third supply via resistor divider against 626.5 mV internal reference |
Key Features
| Feature | Design Value |
|---|---|
| Triple-supply monitoring | Simultaneous supervision of VCC1, VCC2, and RSTIN enables full-system power integrity in SoC/FPGA platforms with core, I/O, and auxiliary rails |
| Guaranteed reset validity down to 0.8 V | Ensures deterministic reset assertion even during severe brownout conditions where VCC1 or VCC2 drops near device functional limit |
| Dual-mode watchdog timer | 35 s startup window allows safe boot of complex firmware before entering 1.12 s normal monitoring mode-prevents false resets during initialization |
| Immunity to short VCC transients | Withstands <20 µs negative-going glitches up to 100 mV below threshold, eliminating spurious resets from switching noise or ESD coupling |
| Low 14 µA supply current | Reduces standby power in always-on subsystems (e.g., RTC, sensor hubs) without compromising supervision accuracy or speed |
Applications
| Industrial PLC Power Sequencing | Telecom Line Card Voltage Monitoring |
|---|---|
|
Use Scenario: Supervising 3.3 V I/O, 1.2 V core, and 5 V auxiliary rails in modular PLC backplane designs. IC Role / Device Role / Timing Role: Triple-voltage supervisor asserting synchronized reset across FPGA, MCU, and analog front-end during power-up/brownout. Use Value: Prevents metastability and latch-up by enforcing strict power-rail ordering and holding reset until all three supplies stabilize above their 3.075 V/1.11 V/4.625 V thresholds. |
Use Scenario: Monitoring primary 3.3 V, secondary 1.8 V, and backup battery voltage in carrier-grade Ethernet line cards. IC Role / Device Role / Timing Role: RSTIN configured to monitor 3.6 V Li-ion backup rail via resistor divider; triggers graceful shutdown before main power loss. Use Value: Enables deterministic failover to battery within 210 ms, preserving register state and avoiding packet corruption during AC mains interruption. |
| Medical Point-of-Care Device Boot Integrity | Automotive Infotainment Power Management |
|
Use Scenario: Ensuring reliable boot of ARM Cortex-M7 MCU in handheld ultrasound units powered by single-cell Li-Po. IC Role / Device Role / Timing Role: Dual-threshold supervision of 3.3 V analog supply and 1.1 V digital core; MR tied to emergency shutdown button. Use Value: Guarantees reset remains asserted until both rails exceed 3.075 V and 1.11 V respectively, preventing partial initialization that could cause sensor calibration errors. |
Use Scenario: Validating 5 V USB-C PD input, 3.3 V infotainment SoC I/O, and 1.8 V DDR memory supply in automotive head units. IC Role / Device Role / Timing Role: Push-pull RST directly drives SoC reset pin; WDI connected to SoC GPIO for runtime watchdog coverage. Use Value: Eliminates external pullup components and provides 1.12 s watchdog timeout-fast enough to catch hung display drivers but tolerant of brief bus arbitration delays. |
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+ | Same pinout, identical VCC1/VCC2 thresholds and D3 timeout, but open-drain RST output instead of push-pull | Requires external pullup resistor; unsuitable for direct-drive µP reset pins without level-shifting or buffering | Select MAX6720UTTGD3+ only when system design already includes pullup network or requires wired-OR reset bus sharing |
| TPS3808G33DBVR | Single-supply monitor (3.3 V only), no RSTIN or VCC2 inputs; 200 ms timeout; 1.6 µA supply current | Lacks triple-monitoring capability; cannot replace MAX6724UTTGD3+ in multirail systems without adding discrete comparators | Use TPS3808G33DBVR only for cost-sensitive single-rail applications where VCC1 = VCC2 = 3.3 V and no auxiliary monitoring is needed |
Compared with MAX6720UTTGD3+, the MAX6724UTTGD3+ eliminates external pullup requirements and simplifies layout, while compared with TPS3808G33DBVR it delivers essential triple-supply coverage and system-level reliability for complex embedded platforms.
Availability
MAX6724UTTGD3+ is available at Aetrix Electronics and suitable for industrial PLCs, telecom line cards, medical point-of-care devices, automotive infotainment systems, and portable instrumentation requiring stable component supply and long-term lifecycle support.
Supply support for MAX6724UTTGD3+ 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, communications, and computing markets.
The MAX6715–MAX6729 family was designed to replace discrete reset circuits in multivoltage embedded systems, delivering integrated triple-supply monitoring, watchdog, and manual reset in ultra-small SOT23 packages.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6724UTTGD3+?
The MAX6724UTTGD3+ uses suffix "TG" for VCC1 and "D" for VCC2, specifying factory-trimmed thresholds of 3.075 V (typical) for both rails, with ±1.5% tolerance over -40°C to +85°C. These values are confirmed in the Reset Voltage Threshold Suffix Guide and Electrical Characteristics table of the official datasheet.
Does the MAX6724UTTGD3+ support monitoring a third voltage, and how is it configured?
Yes, the MAX6724UTTGD3+ supports third-supply monitoring via the RSTIN pin, which compares the applied voltage against an internal 626.5 mV reference. A resistor divider (e.g., R1 = 470 kΩ, R2 = 100 kΩ) sets the trip point-for example, 3.3 V trips at 626.5 mV × (R1 + R2)/R2 = 3.3 V. This configuration is validated in Figure 1 of the datasheet.
What is the function of the WDI pin on the MAX6724UTTGD3+, and what timing applies?
The WDI pin on the MAX6724UTTGD3+ enables dual-mode watchdog functionality: after reset, it enters a 35 s (min) startup period, then switches to 1.12 s (min) normal timeout upon first WDI edge transition. The timer resets on any rising or falling edge, and asserts RST if no transition occurs within the active timeout window-ensuring robust software execution monitoring.
Can the MAX6724UTTGD3+ operate reliably when VCC1 drops below 1.0 V?
Yes-the MAX6724UTTGD3+ guarantees valid reset output logic state as long as either VCC1 or VCC2 remains ≥ 0.8 V. This is explicitly specified in the Absolute Maximum Ratings and Detailed Description sections, enabling reliable brownout detection in battery-depleted scenarios where VCC1 may sag to 0.85 V while VCC2 holds at 1.2 V.
Is the MAX6724UTTGD3+ pin-compatible with other members of the MAX6715–MAX6729 family?
The MAX6724UTTGD3+ uses a 6-pin SOT23-6 package and shares identical pinout with MAX6715–MAX6722 and MAX6723–MAX6724 variants. However, pin functions differ across subfamilies-e.g., MAX6724 has push-pull RST and RSTIN, while MAX6715 lacks RSTIN and uses open-drain RST-so electrical compatibility must be verified per function, not just pin count.
MAX6724UTTGD3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- 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+ FAQ
1.How can I place an order for MAX6724UTTGD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6724UTTGD3+ 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+ reliable?
The price and inventory of MAX6724UTTGD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6724UTTGD3+ is usually 5 days.
3.What payment methods are accepted for MAX6724UTTGD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6724UTTGD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6724UTTGD3+?
MAX6724UTTGD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6724UTTGD3+ 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+?
For technical support, including MAX6724UTTGD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6724UTTGD3+ requirements.
6.How does Aetrix verify that MAX6724UTTGD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6724UTTGD3+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX6724UTTGD3+?
All MAX6724UTTGD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6724UTTGD3+, 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+ part is unused and in its original packaging.
Return procedure for MAX6724UTTGD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6724UTTGD3+ 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…
