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Analog Devices Inc./Maxim Integrated MAX6829VDUT-T
- Part No.:
- MAX6829VDUT-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6829VDUT-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
MAX6829VDUT-T from Maxim Integrated is an ultra-low-voltage dual-supply microprocessor supervisory IC in 6-pin SOT23 package, monitoring primary VCC (1.53V–2.0V range) and secondary VCC2 (1.575V threshold, ±0.05V over temperature), with active-low push-pull RESET output, manual reset input (MR), watchdog timer (1.6s timeout), and guaranteed reset validity down to VCC = +1.0V. It serves critical µP monitoring in portable battery-powered systems requiring stable dual-rail supervision.
For engineers reviewing the MAX6829VDUT-T datasheet, MAX6829VDUT-T pinout, MAX6829VDUT-T application, or MAX6829VDUT-T equivalent, this page delivers verified circuit role, exact threshold values, reset timing behavior, watchdog interaction logic, and real-world substitution guidance - all confirmed for the precise suffix "VDUT-T".
Technical Context
The MAX6829VDUT-T implements a dual-threshold supervision architecture: VCC is monitored against a factory-trimmed 1.575V threshold (±0.054V over –40°C to +125°C), while VCC2 is monitored at a fixed 1.575V threshold with 60ppm/°C tempco. Reset assertion occurs on VCC or VCC2 falling below threshold, MR low, or WDI timeout, with 140ms minimum reset timeout delay and 200ns MR-to-reset propagation.
Its internal watchdog uses a 1.6s nominal timeout (0.80s–2.60s over full temperature range), cleared by any WDI edge; WDI input accepts CMOS-compatible levels (VIH = 0.7×VCC, VIL = 0.3×VCC) and draws ≤160µA when driven high. The push-pull RESET output drives low to ≤0.3V at 50µA sink (VCC ≥1.0V) and high to ≥0.8×VCC at 200µA source (VCC ≥1.8V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Threshold | 1.575V (min 1.521V, max 1.629V at –40°C to +125°C); sets primary supply brownout detection point |
| VCC2 Threshold | 1.575V (min 1.521V, max 1.629V at –40°C to +125°C); factory-trimmed secondary rail monitor |
| Reset Timeout Period | 140ms min (100–320ms over –40°C to +125°C); ensures µP completes power stabilization before release |
| Watchdog Timeout | 1.6s nominal (0.80–2.60s over –40°C to +125°C); detects µP firmware hang via WDI edge absence |
| VCC Supply Current | 25µA max at –40°C to +125°C (VCC = +1.8V); enables ultra-low-power battery operation |
| RESET Output Type | Active-low push-pull; eliminates external pull-up, supports direct drive of µP reset pin |
| Operating Temp Range | –40°C to +125°C; qualified for industrial and extended-temperature embedded applications |
Pinout & Package
Package: 6-pin SOT23 (U6+1 outline, land pattern 90-0175), RoHS-compliant, lead-free version denoted by "+T" suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull reset output; asserts low on fault and holds for 140ms min after recovery |
| 2 | GND | Ground reference for all internal comparators and logic; must be low-impedance connection |
| 3 | MR | Manual reset input (active-low); internal 50kΩ pullup; 200ns delay from MR low to RESET assert |
| 4 | WDI | Watchdog input; edge-sensitive (rising/falling); clears 1.6s timer on transition; disabled if floating |
| 5 | VCC2 | Secondary supply input; monitored at fixed 1.575V threshold; no external resistor divider required |
| 6 | VCC | Primary supply input; monitored at 1.575V threshold; powers internal circuitry and RSTIN comparator |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously supervises VCC (1.53V–2.0V range) and VCC2 (1.575V fixed) with separate comparators |
| Guaranteed reset validity to VCC = +1.0V | Ensures reliable reset assertion even during deep brownout conditions before power collapse |
| Immunity to short negative VCC transients | Withstands ≤20µs negative glitches down to 100mV below threshold without spurious reset |
| No external components required | Factory-trimmed thresholds and internal pullup eliminate resistors, capacitors, or trimming circuits |
| 140ms minimum reset timeout | Provides sufficient hold time for µP power sequencing, clock stabilization, and memory initialization |
Applications
| Portable/Battery-Powered Equipment | Embedded Controllers |
|---|---|
|
Use Scenario: Power management in handheld medical devices with dual Li-ion cell and LDO-regulated core/I/O rails. IC Role / Device Role / Timing Role: Dual-rail supervisor ensuring safe boot and brownout recovery for ARM Cortex-M0+ MCU and analog front-end. Use Value: Prevents erratic MCU operation during battery sag by asserting reset when either 1.8V I/O rail or 1.5V core rail drops below 1.575V. |
Use Scenario: Industrial PLC module with isolated 3.3V communication interface and 1.5V FPGA core supply. IC Role / Device Role / Timing Role: Primary VCC supervisor for FPGA core rail and secondary monitor for isolated interface rail. Use Value: Guarantees FPGA configuration integrity by holding reset until both rails stabilize above 1.575V post-power-up. |
| Intelligent Instruments | Critical µP Monitoring |
|
Use Scenario: Portable multimeter with segmented LCD, precision ADC, and dual-supply sensor interface. IC Role / Device Role / Timing Role: Supervises main 3.3V system rail and 1.5V analog sensor bias rail using VCC/VCC2 inputs. Use Value: Eliminates measurement corruption by resetting µP when sensor bias voltage droops during high-current sampling. |
Use Scenario: Automotive-grade telematics control unit with fail-safe boot sequence and watchdog-enforced firmware health check. IC Role / Device Role / Timing Role: Critical reset generator with manual reset button and WDI-driven firmware liveness verification. Use Value: Forces controlled reboot within 1.6s if firmware fails to toggle WDI, preventing undetected lockup in safety-critical path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply µP supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6830VDUT-T | Active-high push-pull RESET output (vs. MAX6829VDUT-T's active-low); identical VCC/VCC2 thresholds and watchdog specs | Requires µP with active-high reset input; incompatible with standard active-low reset pins without level translation | Select when target µP reset pin is active-high and board layout cannot accommodate inversion logic |
| TPS3808G15DBVR | Single-supply supervisor (monitors only VCC); 1.5V threshold, 200ms reset timeout; no VCC2 or WDI input | Lacks secondary rail monitoring and watchdog functionality; requires external circuitry for dual-rail or watchdog needs | Choose only if application monitors one rail only and does not require WDI-based firmware health checking |
Compared with MAX6830VDUT-T, MAX6829VDUT-T provides native compatibility with industry-standard active-low µP reset inputs; compared with TPS3808G15DBVR, it delivers integrated dual-rail supervision and watchdog without external components or design compromises.
Availability
MAX6829VDUT-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, embedded controllers, intelligent instruments, and critical µP monitoring applications requiring stable component supply across industrial temperature ranges.
Supply support for MAX6829VDUT-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 computing applications.
The MAX6826–MAX6831 family was engineered specifically for ultra-low-voltage dual-rail microprocessor supervision in space-constrained, battery-sensitive systems - delivering factory-trimmed accuracy, wide temperature operation, and integrated watchdog functionality in SOT23.
FAQ
What is the exact VCC2 reset threshold voltage for MAX6829VDUT-T?
The MAX6829VDUT-T has a factory-trimmed VCC2 reset threshold of 1.575V, with a guaranteed range of 1.521V (min) to 1.629V (max) across –40°C to +125°C operating temperature. This value is specified in the Electrical Characteristics table under "VCC2 Reset Threshold" for suffix "V", and applies exclusively to MAX6829/MAX6830/MAX6831 variants - not the adjustable-reset MAX6826–MAX6828 series.
Does MAX6829VDUT-T support manual reset functionality, and how is it implemented?
Yes, MAX6829VDUT-T includes a dedicated MR (manual reset) input on Pin 3. It is active-low with an internal 50kΩ pullup to VCC, requiring only a momentary switch to GND to force reset. Reset remains asserted for the full 140ms timeout period after MR returns high. No external pullup or debounce components are needed, and MR accepts standard CMOS logic levels per datasheet specifications.
What is the watchdog timeout behavior of MAX6829VDUT-T, and how is it cleared?
The MAX6829VDUT-T features a 1.6s nominal watchdog timeout (0.80–2.60s over temperature), cleared by any rising or falling edge on the WDI pin (Pin 4). If WDI remains static beyond timeout, RESET asserts for 140ms. The timer also clears automatically during active reset or MR assertion. Leaving WDI unconnected disables the watchdog, as internal circuitry toggles it every ~1.4s.
Can MAX6829VDUT-T monitor two different voltage rails simultaneously, and what are their ranges?
Yes, MAX6829VDUT-T monitors two rails simultaneously: VCC (Pin 6) in the +1.53V to +2.0V range (threshold 1.575V), and VCC2 (Pin 5) at a fixed 1.575V threshold. Both rails are supervised independently - a drop on either triggers reset. Unlike MAX6826–MAX6828, MAX6829VDUT-T does not support user-adjustable RESET IN; VCC2 is factory-trimmed and requires no external components.
Is MAX6829VDUT-T compatible with 1.2V or 0.9V supply rails?
No, MAX6829VDUT-T is not designed for 1.2V or 0.9V rails. Its VCC operating range is +1.53V to +2.0V, and its VCC2 threshold is fixed at 1.575V. For lower rails, consider MAX6829 variants with suffix "D" (0.788V) or "E" (0.833V), or the MAX6831 series with open-drain output and matching low-voltage thresholds - but those are distinct part numbers, not functionally interchangeable with MAX6829VDUT-T.
MAX6829VDUT-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:
- 2
- Voltage - Threshold:
- 0.788V, 1.58V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6829VDUT-T FAQ
1.How can I place an order for MAX6829VDUT-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6829VDUT-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 MAX6829VDUT-T reliable?
The price and inventory of MAX6829VDUT-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6829VDUT-T is usually 5 days.
3.What payment methods are accepted for MAX6829VDUT-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6829VDUT-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6829VDUT-T?
MAX6829VDUT-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6829VDUT-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 MAX6829VDUT-T?
For technical support, including MAX6829VDUT-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6829VDUT-T requirements.
6.How does Aetrix verify that MAX6829VDUT-T is sourced from the original manufacturer or authorized distributors?
All MAX6829VDUT-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 MAX6829VDUT-T meets industry standards.
7.What is the process for return or replacement of MAX6829VDUT-T?
All MAX6829VDUT-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6829VDUT-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 MAX6829VDUT-T part is unused and in its original packaging.
Return procedure for MAX6829VDUT-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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