MAX6730UTSD3+ Analog Devices Integrated Circuit (SOT23 (6-Pin)) In Stock
The MAX6730UTSD3+ is a microprocessor supervisory circuit with an independent watchdog output in a compact 6-pin SOT-23 package. It provides a fixed reset threshold, manual reset input, and a separate watchdog output to ensure reliable MCU startup and runtime integrity in embedded systems.
- Manufacturer
- Analog Devices
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- MAX6730UTSD3+ Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Microprocessor supervisor with independent watchdog output (WDO) for dual protection
- Manual reset input (MNL RST) for hardware-initiated system restart
- Fixed voltage threshold monitoring — no external resistors required
- Compact 6-pin SOT-23 package for space-constrained embedded designs
- RoHS-compliant (JESD-609 e3) with operating range suitable for industrial temperatures
Applications
MAX6730UTSD3+ is used in microcontroller-based embedded systems, industrial PLCs, and communication equipment where the MCU supply voltage must be supervised and the firmware must be monitored for lockup via a watchdog timer. Its independent watchdog output allows a power management IC or fault-handling circuit to respond to MCU hangs independently of the reset line, improving system reliability in 24/7 operational environments.
Specifications
| Manufacturer Package Code | 6-SOT_23-N/A |
| Date Of Intro | 2002-11-19 |
| YTEOL | 8.5 |
| Additional Feature | MNL RST:Y;PW FL IO:N;PRG RST DLY:N;WD:Y;WDO:Y;WWD:N |
| Adjustable Threshold | NO |
| Analog IC - Other Type | VOLTAGE SUPERVISOR/RESET IC |
| JESD-30 Code | R-PDSO-G6 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 0.039mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 0.8V |
| Supply Voltage-Nom (Vsup) | 1V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +2.925V |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | SOT23 (6-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Japan, Mainland China, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand, USA |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does MAX6730UTSD3+ provide dual-layer protection with both a reset output and an independent watchdog output?
MAX6730UTSD3+ generates a RESET output when the monitored supply drops below the fixed threshold and also provides an independent WDO (watchdog output) if the watchdog timer is not serviced within its timeout window. This 2-output architecture means firmware lockup and undervoltage faults are reported on separate pins, enabling different recovery actions in a system with 6-pin SOT-23 footprint.
What is the reset threshold voltage for MAX6730UTSD3+, and how is it selected for a specific supply rail?
The 'D3' in MAX6730UTSD3+ denotes a fixed 3.08 V reset threshold. No external resistors are required to set this threshold, making it a zero-BOM-overhead supervisor for standard 3.3 V microcontroller supply rails where the reset must assert when VCC falls below approximately 3.08 V.
What board footprint does MAX6730UTSD3+ require, and how does the 6-pin SOT-23 package compare to larger supervisor packages?
MAX6730UTSD3+ uses a 6-pin SOT-23 package measuring approximately 2.9 x 1.6 mm, which is roughly 60% smaller than an 8-pin SOIC (5 x 4 mm). This makes it suitable for space-constrained MCU module designs, wearable controllers, and handheld instruments where supervisor IC area must be minimized.
Is MAX6730UTSD3+ a viable long-term procurement choice, and are there pin-compatible successors to consider?
MAX6730UTSD3+ was introduced in 2002 and has a YTEOL of 8.5, indicating it may be nearing end-of-life within this timeframe. For new designs, engineers should evaluate the MAX16054 or MAX6712 series supervisors, which offer similar 3 V threshold supervision with watchdog in 6-pin SOT-23 packages and longer expected product availability.
Related Guides
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
ADAQ7768-1 Design Guide for Precision Vibration and Dynamic Signal Measurement
Design ADAQ7768-1 precision data acquisition channels for vibration and dynamic sensing with the right bandwidth, reference, clock, and layout choices.
Jun 30, 2026
AD5204BRZ10 Design Guide for SPI-Controlled Gain and Offset Calibration
Design AD5204BRZ10 digital potentiometer calibration loops with bounded trim span, safe wiper current, clean SPI routing, and reliable startup codes.
Jun 30, 2026
Why Buy from FindMyChip
About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
More from Analog Devices
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”