My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6829SYUT+T
- Part No.:
- MAX6829SYUT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6829SYUT+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,502
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6829SYUT+T from Maxim Integrated is a dual ultra-low-voltage microprocessor supervisory IC in 6-pin SOT23 package, monitoring primary VCC (3.08V threshold) and secondary VCC2 (2.188V threshold), with manual reset input, watchdog timer (1.6s timeout), and active-low push-pull RESET output. It ensures reliable µP reset during power-up, brownout, and software hang conditions in portable and multivoltage embedded systems.
For engineers reviewing the MAX6829SYUT+T datasheet, MAX6829SYUT+T pinout, MAX6829SYUT+T application, or MAX6829SYUT+T equivalent, key selection criteria include guaranteed reset validity down to VCC = +1.2V, factory-trimmed dual-threshold monitoring, 140ms minimum reset timeout, immunity to short negative VCC transients, and lead-free SOT23-6 packaging for space-constrained designs.
Technical Context
The MAX6829SYUT+T integrates two independent voltage monitors: one for primary supply VCC (threshold = 3.08V ±3%, suffix 'T') and one factory-trimmed monitor for secondary supply VCC2 (threshold = 2.188V ±3%, suffix 'Y'). It features a dedicated WDI input that detects edge transitions to clear a 1.6s watchdog timer, and an MR input with internal 50kΩ pullup enabling manual reset assertion.
Reset assertion occurs when VCC falls below 3.08V, VCC2 falls below 2.188V, MR is pulled low, or WDI remains static beyond 1.6s. The push-pull RESET output drives low for ≥140ms after all fault conditions clear, with propagation delay <20µs and guaranteed operation across –40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Threshold | 3.08V ±3% at –40°C to +125°C - sets primary supply brownout detection point for 3.3V systems |
| VCC2 Threshold | 2.188V ±3% at –40°C to +125°C - factory-trimmed secondary monitor for 2.2V I/O rails |
| Reset Timeout Period | 140ms (min) - ensures µP completes full initialization before release from reset |
| Watchdog Timeout | 1.6s nominal - provides sufficient margin for firmware execution loops without false triggers |
| Operating Voltage Range | +1.2V to +5.5V - supports operation during deep brownout while maintaining valid RESET state |
| Supply Current | 7µA (typ) at +3.6V, –40°C to +85°C - enables multi-year battery life in portable equipment |
| RESET Output Type | Active-low push-pull - eliminates external pullup resistor, simplifies interface to µP reset pins |
Pinout & Package
Package: 6-pin SOT23 (U6+1 outline, land pattern 90-0175), RoHS-compliant lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull reset output - asserts low on VCC/VCC2 fault, MR low, or WDI timeout; holds for ≥140ms |
| 2 | GND | Ground reference - common return path for all internal comparators and logic |
| 3 | MR | Manual-reset input (active-low) - internal 50kΩ pullup to VCC; no external components needed |
| 4 | WDI | Watchdog input - edge-sensitive; toggling clears 1.6s timer; unconnected disables watchdog |
| 5 | VCC2 | Secondary supply monitor input - factory-trimmed to 2.188V threshold; connects directly to 2.2V rail |
| 6 | VCC | Primary supply monitor input - configured for 3.08V threshold; powers internal circuitry and bias networks |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of primary (3.08V) and secondary (2.188V) supplies eliminates need for two discrete supervisors |
| Guaranteed reset validity down to VCC = +1.2V | Ensures deterministic reset behavior during severe brownout - no undefined states or glitches |
| No external components required | Internal pullup on MR, factory-trimmed thresholds, and integrated watchdog timer reduce BOM count and layout area |
| Immunity to short negative VCC transients | Withstands ≤20µs, 100mV VCC glitches without spurious reset - improves system robustness in noisy environments |
| Lead-free 6-pin SOT23 package | 0.95mm pitch, 2.9mm × 1.6mm footprint - compatible with standard reflow profiles and automated assembly |
Applications
| Portable/Battery-Powered Equipment | Embedded Controllers |
|---|---|
Use Scenario: Power management in handheld medical devices with dual Li-ion cell (3.3V main rail) and 2.2V sensor interface rail. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting reset if either rail drops during battery discharge or load switching. Use Value: Prevents corrupted memory writes and CPU lockup during gradual voltage decay, extending usable battery life by ensuring clean restarts. |
Use Scenario: Industrial PLC controller with 3.3V core and 2.2V I/O expansion bus. IC Role / Device Role / Timing Role: Monitors both domains and forces coordinated reset on any rail failure, avoiding partial initialization. Use Value: Eliminates inconsistent peripheral states and communication errors caused by asynchronous power sequencing. |
| Intelligent Instruments | Critical µP Monitoring |
Use Scenario: Portable oscilloscope with 3.3V FPGA domain and 2.2V ADC reference supply. IC Role / Device Role / Timing Role: Ensures FPGA and ADC initialize synchronously after power-on or brownout recovery. Use Value: Guarantees signal acquisition integrity by preventing ADC sampling before FPGA configuration completes. |
Use Scenario: Automotive body control module requiring fail-safe reset under cold-crank (VCC dip to 1.2V). IC Role / Device Role / Timing Role: Maintains valid active-low RESET output even as VCC decays to 1.2V, meeting ASIL-B timing requirements. Use Value: Meets ISO 16750-2 cold-crank immunity without auxiliary power or complex reset conditioning circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6830SYUT+T | Active-high push-pull RESET output instead of active-low; identical VCC/VCC2 thresholds and timing | Required where host µP expects active-high reset assertion (e.g., certain ARM Cortex-M variants) | Select MAX6830SYUT+T only when system-level reset polarity mandates high-true signaling |
| TPS3808G30DBVR | Single-supply monitor (3.0V threshold), no VCC2 input; 200ms reset timeout; requires external pullup for open-drain RESET | Suitable for cost-sensitive single-rail applications but cannot replace dual-monitoring function of MAX6829SYUT+T | Use TPS3808G30DBVR only if secondary supply monitoring is handled elsewhere in the design |
Compared with MAX6829SYUT+T, MAX6830SYUT+T offers identical dual-threshold supervision but inverted reset polarity, while TPS3808G30DBVR reduces functionality to single-rail monitoring with longer timeout - neither provides drop-in replacement capability without schematic or firmware changes.
Availability
MAX6829SYUT+T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, embedded controllers, intelligent instruments, and critical µP monitoring requiring stable component supply across industrial temperature range (–40°C to +125°C).
Supply support for MAX6829SYUT+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 demanding industrial, automotive, and computing applications.
The MAX6826–MAX6831 family delivers dual-supply µP supervision with factory-trimmed thresholds, watchdog timers, and manual reset in ultra-small SOT23 packages - targeting space-constrained, battery-sensitive embedded systems.
FAQ
What is the exact VCC2 reset threshold voltage for MAX6829SYUT+T?
The MAX6829SYUT+T has a factory-trimmed VCC2 reset threshold of 2.188V ±3% over the full operating temperature range (–40°C to +125°C), as specified in the Electrical Characteristics table for suffix 'Y'. This value is measured at VCC2 pin 5 and is guaranteed for production units without external calibration.
Does MAX6829SYUT+T support manual reset assertion during brownout conditions?
Yes, MAX6829SYUT+T supports manual reset assertion down to VCC = +1.2V. The MR input retains valid logic thresholds (VIL = 0.3×VCC, VIH = 0.7×VCC) and internal 50kΩ pullup remains functional, allowing reliable reset initiation even during severe supply droop.
How does the watchdog timer in MAX6829SYUT+T respond to WDI signal edges?
The MAX6829SYUT+T watchdog timer clears on any rising or falling edge at the WDI pin. A single 50ns minimum pulse is sufficient to reset the 1.6s timeout counter. If WDI remains static (high or low) beyond this period, the timer expires and asserts RESET for the full 140ms timeout.
Can MAX6829SYUT+T monitor a 1.8V supply as VCC2?
No, MAX6829SYUT+T is factory-trimmed for VCC2 = 2.188V and cannot accurately monitor 1.8V. For 1.8V secondary supply monitoring, select MAX6829SWUT+T (VCC2 = 1.665V) or MAX6829SVUT+T (VCC2 = 1.575V), matching the suffix letter to the required threshold per the Threshold Suffix Guide.
What is the maximum allowable VCC transient duration that will not trigger reset in MAX6829SYUT+T?
According to the Typical Operating Characteristics graph "Maximum VCC Transient Duration vs. Reset Threshold Overdrive", a VCC transient dipping 100mV below the 3.08V threshold (i.e., to 2.98V) must be ≤20µs in duration to avoid triggering reset. Longer durations or deeper dips will assert RESET.
MAX6829SYUT+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:
- 2
- Voltage - Threshold:
- 2.188V, 2.93V
- 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
MAX6829SYUT+T FAQ
1.How can I place an order for MAX6829SYUT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6829SYUT+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 MAX6829SYUT+T reliable?
The price and inventory of MAX6829SYUT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6829SYUT+T is usually 5 days.
3.What payment methods are accepted for MAX6829SYUT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6829SYUT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6829SYUT+T?
MAX6829SYUT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6829SYUT+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 MAX6829SYUT+T?
For technical support, including MAX6829SYUT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6829SYUT+T requirements.
6.How does Aetrix verify that MAX6829SYUT+T is sourced from the original manufacturer or authorized distributors?
All MAX6829SYUT+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 MAX6829SYUT+T meets industry standards.
7.What is the process for return or replacement of MAX6829SYUT+T?
All MAX6829SYUT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6829SYUT+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 MAX6829SYUT+T part is unused and in its original packaging.
Return procedure for MAX6829SYUT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6829SYUT+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…
