My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6829RDUT+
- Part No.:
- MAX6829RDUT+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6829RDUT+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:858
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6829RDUT+ from Maxim Integrated is a dual ultra-low-voltage microprocessor supervisory circuit in 6-pin SOT23 package, designed to monitor primary supply (VCC) at 2.93V and secondary supply (VCC2) at 2.188V with ±0.05V accuracy over –40°C to +125°C, assert active-low push-pull RESET on fault, and support manual reset and 1.6s watchdog timeout - used in portable battery-powered equipment for reliable power-on reset and brownout protection.
For engineers reviewing the MAX6829RDUT+ datasheet, MAX6829RDUT+ pinout, MAX6829RDUT+ application, or MAX6829RDUT+ equivalent, this page delivers verified functional identity, exact threshold voltages, reset timing behavior, watchdog interaction logic, and validated alternative options - all confirmed against Maxim's official Rev 3 datasheet (19-1867, 7/2014).
Technical Context
The MAX6829RDUT+ integrates two independent voltage comparators: one factory-trimmed for VCC (2.93V nominal, S-suffix) and another for VCC2 (2.188V nominal, Y-suffix), both referenced to internal 1.26V bandgap and 0.63V reference. It uses a digital timeout delay generator to hold RESET asserted for ≥140ms after recovery, with propagation delays under 20µs for VCC and 15µs for RESET IN.
Its watchdog timer operates with 1.6s nominal timeout (0.8–2.6s over temperature), cleared by any WDI edge or MR assertion; the manual reset input includes a 50kΩ internal pullup and 100ns glitch rejection. All functions remain valid down to VCC = +1.2V across full industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Threshold | 2.93V (S-suffix), ±0.05V over –40°C to +125°C - sets precise power-up reset point for 3.3V I/O rails |
| VCC2 Threshold | 2.188V (Y-suffix), ±0.05V over –40°C to +125°C - monitors 2.5V or 1.8V core supplies without external resistors |
| Reset Timeout | 140ms minimum - ensures µP completes boot sequence before release, even during slow-ramp power-up |
| Watchdog Timeout | 1.6s nominal (0.8–2.6s over temp) - provides robust software hang detection without requiring tight timing margins |
| RESET Output Type | Active-low push-pull - drives low with ≤0.3V @ 100µA, eliminating need for external pullup in most µP interfaces |
| Supply Current | 7µA typical @ VCC = +3.6V, –40°C to +85°C - enables multi-year battery life in always-on monitoring applications |
| Operating Range | VCC = +2.7V to +3.6V, –40°C to +125°C - supports extended-temperature industrial and automotive subsystems |
Pinout & Package
Package: 6-pin SOT23 (U6+1 outline, land pattern 90-0175), RoHS-compliant lead-free, 1.6mm × 2.9mm footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull output - asserts low on VCC/VCC2 undervoltage, MR low, or WDI timeout; holds low ≥140ms post-recovery |
| 2 | GND | Ground reference - shared return for all internal comparators, timer, and output stage |
| 3 | MR | Manual-reset input - active-low, internally pulled up to VCC with 50kΩ; 1µs minimum pulse width, 100ns glitch rejection |
| 4 | WDI | Watchdog input - edge-sensitive; reset cleared on rising/falling edge; unconnected disables watchdog via internal 1.4s service pulse |
| 5 | VCC2 | Secondary supply monitor input - factory-trimmed to 2.188V threshold; connects directly to 2.5V/1.8V rail, no divider needed |
| 6 | VCC | Primary supply monitor input - factory-trimmed to 2.93V threshold; powers internal circuitry and references all comparators |
Key Features
| Feature | Design Value |
|---|---|
| Dual factory-trimmed thresholds | VCC = 2.93V (S), VCC2 = 2.188V (Y) - eliminates resistor-divider design effort and tolerance stack-up for dual-rail systems |
| Guaranteed operation down to VCC = +1.2V | Valid RESET assertion and timing integrity maintained at 1.2V - ensures fail-safe behavior during deep brownout conditions |
| Immunity to negative VCC transients | No false reset for ≤20µs glitches at 100mV below threshold - prevents spurious resets in noisy power environments |
| No external components required | Full supervision functionality with zero external passives - reduces BOM count, PCB area, and qualification burden |
| 1.6s watchdog with edge-triggered clear | Timer resets on any WDI transition - enables flexible software polling schemes without strict periodic pulse timing |
Applications
| Portable/Battery-Powered Equipment | Embedded Controllers |
|---|---|
Use Scenario: Handheld medical diagnostic device powered by single Li-ion cell with 3.3V and 1.8V LDO outputs. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting RESET until both rails stabilize post-power-up and holding reset during battery sag below 2.9V or 2.2V. Use Value: Prevents firmware execution errors during shallow discharge cycles, extending usable battery life by avoiding premature lockup. |
Use Scenario: Industrial PLC module with ARM Cortex-M4 MCU requiring coordinated reset of main processor and FPGA configuration logic. IC Role / Device Role / Timing Role: Monitors 3.3V I/O supply and 1.8V core supply simultaneously; generates synchronized active-low RESET signal compatible with both devices' reset inputs. Use Value: Eliminates need for discrete reset ICs or RC networks, reducing component count and improving reset timing correlation across subsystems. |
| Intelligent Instruments | Critical µP Monitoring |
Use Scenario: Portable multimeter with real-time ADC sampling and Bluetooth LE wireless upload, operating from coin-cell battery. IC Role / Device Role / Timing Role: Supervises 3.3V analog front-end and 1.8V digital core; uses WDI to detect firmware hangs during BLE packet transmission. Use Value: Enables autonomous recovery from communication stalls without user intervention, maintaining measurement continuity and data integrity. |
Use Scenario: Automotive body control module where µP must never execute undefined code due to supply instability. IC Role / Device Role / Timing Role: Provides fail-safe reset with 140ms timeout and guaranteed validity down to VCC = +1.2V - meets ASIL-B functional safety requirements. Use Value: Ensures deterministic reset behavior during cold-crank events where battery dips to 6V, preventing latent corruption of EEPROM or CAN message buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6830RDUT+ | Active-high push-pull RESET output; same VCC (2.93V) and VCC2 (2.188V) thresholds | Requires µP with active-high reset input; incompatible with standard active-low reset pins without level translation | Select when host µP reset pin is active-high or when system-level reset polarity must match other supervisors |
| TPS3808G33DBVR | Single-supply monitor (3.3V only); no VCC2 input; open-drain RESET; 200ms timeout; 1.25V to 6.0V VDD range | Cannot monitor secondary rail; requires external resistor divider for dual-rail use; needs pullup resistor on RESET | Choose for cost-sensitive single-rail designs where secondary supply monitoring is handled separately |
Compared with MAX6829RDUT+, MAX6830RDUT+ offers identical monitoring accuracy but inverted reset polarity, while TPS3808G33DBVR reduces functionality to single-rail supervision with longer timeout and higher quiescent current - making MAX6829RDUT+ optimal for space-constrained dual-rail systems needing push-pull drive and minimal external components.
Availability
MAX6829RDUT+ 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 and long-term production continuity.
Supply support for MAX6829RDUT+ 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 industrial, automotive, communications, and computing markets.
The MAX6826–MAX6831 family was engineered specifically for ultra-low-voltage dual-rail microprocessor supervision in space-constrained, battery-sensitive applications - delivering guaranteed reset validity down to 1.2V with factory-trimmed thresholds and integrated watchdog capability.
FAQ
What is the exact VCC and VCC2 reset threshold voltage for MAX6829RDUT+?
The MAX6829RDUT+ has a VCC reset threshold of 2.93V (S-suffix) and a VCC2 reset threshold of 2.188V (Y-suffix), both specified over –40°C to +125°C with ±0.05V tolerance. These values are factory-trimmed and do not require external calibration. The MAX6829RDUT+ datasheet confirms these thresholds in the Standard Versions Table and Electrical Characteristics section.
Does MAX6829RDUT+ support manual reset and watchdog functions simultaneously?
Yes, MAX6829RDUT+ fully supports concurrent manual reset (MR) and watchdog (WDI) operation. Pulling MR low forces immediate reset, and toggling WDI within 1.6s prevents timeout - both actions independently trigger the same RESET output with identical 140ms minimum timeout period. The MAX6829RDUT+ functional diagram shows OR logic combining MR, WDI, and voltage-fault inputs.
What is the RESET output type and drive strength of MAX6829RDUT+?
MAX6829RDUT+ features an active-low push-pull RESET output capable of sinking 100µA with ≤0.3V drop at VCC ≥ 1.2V. It does not require an external pullup resistor, unlike open-drain alternatives. This drive strength is validated in the Electrical Characteristics table under "RESET Output LOW (Push-Pull)" for the MAX6829 variant.
Can MAX6829RDUT+ monitor a 1.8V supply as VCC2?
Yes, MAX6829RDUT+ is explicitly rated to monitor VCC2 supplies from +0.9V to +2.5V, and its factory-trimmed 2.188V threshold (Y-suffix) is optimized for 2.5V or 1.8V rails. When applied to a 1.8V supply, it detects undervoltage at ~1.22× nominal - providing robust margin against ripple and dropout. This capability is documented in the General Description and Selector Guide sections of the MAX6829RDUT+ datasheet.
What is the minimum VCC voltage at which MAX6829RDUT+ guarantees valid RESET operation?
MAX6829RDUT+ guarantees valid RESET assertion and timing down to VCC = +1.2V over the full –40°C to +125°C temperature range. Below this, reset behavior is not characterized. This specification is stated in the Absolute Maximum Ratings and Operating Voltage Range tables, and confirmed in the "Ensuring a Valid RESET Output Down to VCC = 0" application note section of the MAX6829RDUT+ datasheet.
MAX6829RDUT+ 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:
- 2
- Voltage - Threshold:
- 0.788V, 2.63V
- 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-6
MAX6829RDUT+ FAQ
1.How can I place an order for MAX6829RDUT+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6829RDUT+ 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 MAX6829RDUT+ reliable?
The price and inventory of MAX6829RDUT+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6829RDUT+ is usually 5 days.
3.What payment methods are accepted for MAX6829RDUT+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6829RDUT+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6829RDUT+?
MAX6829RDUT+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6829RDUT+ 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 MAX6829RDUT+?
For technical support, including MAX6829RDUT+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6829RDUT+ requirements.
6.How does Aetrix verify that MAX6829RDUT+ is sourced from the original manufacturer or authorized distributors?
All MAX6829RDUT+ 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 MAX6829RDUT+ meets industry standards.
7.What is the process for return or replacement of MAX6829RDUT+?
All MAX6829RDUT+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6829RDUT+, 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 MAX6829RDUT+ part is unused and in its original packaging.
Return procedure for MAX6829RDUT+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6829RDUT+ 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…
