My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6730UTYD3+
- Part No.:
- MAX6730UTYD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6730UTYD3+.pdf
- Description:
- SINGLE-VOLTAGE MICROPROCESSOR SU
- Quantity:
- Payment:
- Shipping:
Inventory:2,455
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6730UTYD3+ from Maxim Integrated is a single-voltage microprocessor supervisor IC with active-low open-drain reset output, manual reset input, and independent watchdog timer featuring 54s startup delay and 1.68s normal timeout. It monitors VCC1 at factory-set +2.188V threshold (suffix Y), provides 140–280ms reset timeout (suffix D3), and operates over –40°C to +85°C for embedded power sequencing in telecom and industrial control systems.
For engineers reviewing the MAX6730UTYD3+ datasheet, MAX6730UTYD3+ pinout, MAX6730UTYD3+ application, or MAX6730UTYD3+ equivalent, this page delivers verified electrical specs, SOT23-6 package mapping, reset/wdog timing behavior, supply current (14µA typ), and real-world substitution guidance - all confirmed against Maxim's official Rev 9 datasheet (10/2017).
Technical Context
The MAX6730UTYD3+ integrates a dual-mode watchdog timer: initial 35–72s startup period enables full system initialization after power-up or brownout, followed by 1.12–2.24s normal-mode timeout for rapid fault detection during runtime. Its reset logic asserts RST low when VCC1 falls below +2.188V (±0.063V), MR is pulled low, or undervoltage persists beyond the 140–280ms timeout window.
It uses a precision internal reference to guarantee reset validity down to VCC1 = +0.8V, features 20ppm/°C threshold tempco, and rejects short VCC transients via built-in glitch immunity - validated by the "Maximum VCC Transient Duration vs. Reset Threshold Overdrive" curve in the datasheet. The open-drain RST output requires an external pullup and supports bidirectional μP reset pins without contention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | +2.188V (typ), ±0.063V tolerance - sets precise brownout detection point for primary supply |
| Reset Timeout Period | 140–280ms (D3 option) - ensures sufficient hold time for processor boot and peripheral initialization |
| Watchdog Startup Delay | 35–72s after reset - allows safe firmware load and hardware configuration before watchdog enforcement |
| Normal Watchdog Timeout | 1.12–2.24s - detects software lockup within sub-second latency during active operation |
| Supply Current | 14µA (typ) at +3.6V - enables ultra-low-power operation in battery-backed or energy-constrained systems |
| Operating Temperature | –40°C to +85°C - fully specified for industrial and telecom equipment deployment |
| Package | SOT23-6 - 2.9mm × 1.6mm footprint ideal for space-constrained PCB layouts |
Pinout & Package
SOT23-6 package (2.9mm × 1.6mm, 0.95mm height), lead(Pb)-free, RoHS compliant. Thermal resistance θJA = 230°C/W on 4-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST | Active-Low Reset Output | Open-drain output; requires external pullup; asserts low on VCC1 undervoltage, MR low, or timeout expiration |
| GND | Ground Reference | Common return path for all internal circuitry and voltage monitoring comparators |
| WDO | Active-Low Watchdog Output | Open-drain watchdog flag; asserts low if WDI lacks edge for >1.12s (normal mode) or >35s (startup) |
| VCC1 | Primary Supply Input | Power source and monitored voltage rail; powers internal circuitry when > VCC2 |
| WDI | Watchdog Input | Edge-sensitive input; rising/falling transitions reset watchdog timer; unconnected = no disable |
| MR | Active-Low Manual Reset | Pulled up internally to VCC1 (50kΩ); drives RST low when asserted; supports momentary switch interface |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode watchdog timer | 35–72s startup delay + 1.12–2.24s normal timeout - eliminates false resets during boot while ensuring fast runtime fault response |
| Guaranteed reset validity down to VCC1 = +0.8V | Enables reliable reset assertion even during deep brownout conditions before full power collapse |
| Immunity to short VCC transients | Rejects glitches <100ns duration per MR Glitch Rejection spec - prevents spurious resets from supply noise |
| Low 14µA supply current | Reduces standby power draw in always-on systems; supports >10-year battery life in coin-cell applications |
| Factory-set +2.188V VCC1 threshold (Y suffix) | Eliminates external resistor divider; ensures production consistency and reduces BOM count |
Applications
| Telecom Power Sequencing | Industrial PLC Controller |
|---|---|
Use Scenario: Monitoring +3.3V and +2.5V rails in a multi-board telecom shelf with hot-swap capability and redundant power supplies. IC Role / Device Role / Timing Role: Primary supervisor for VCC1 (+2.188V threshold matches +2.5V rail margin); provides 280ms reset hold to coordinate FPGA configuration and DSP boot. Use Value: Prevents partial initialization failures by holding reset until both power rails stabilize and clocks settle - verified by tRD <45µs and tRP = 210ms typical. |
Use Scenario: Embedded controller in DIN-rail mounted PLC handling analog I/O, Ethernet, and CAN bus interfaces. IC Role / Device Role / Timing Role: Single-supply monitor for +2.5V core logic rail; manual reset via front-panel button; watchdog guards against firmware hang during cyclic scan execution. Use Value: 14µA quiescent current extends backup battery life; MR input enables field service recovery without power cycle; watchdog startup delay accommodates bootloader execution. |
| Portable Medical Monitor | Set-Top Box Power Management |
Use Scenario: Battery-powered ECG monitor requiring fail-safe reboot on Li-ion voltage sag below 3.0V. IC Role / Device Role / Timing Role: Supervises +2.5V system rail derived from buck converter; RST drives microcontroller reset pin; WDO connected to safety-critical watchdog interrupt line. Use Value: Valid reset down to VCC1 = +0.8V ensures last-chance reset before brownout lockup; 20ppm/°C tempco maintains accuracy across operating temperature range. |
Use Scenario: Consumer STB with multiple voltage domains (+1.2V CPU, +3.3V I/O, +5V USB) and HDMI CEC wake capability. IC Role / Device Role / Timing Role: Dedicated supervisor for +2.5V memory interface rail; MR tied to IR remote decode MCU; open-drain RST interfaces cleanly with bidirectional SoC reset pin. Use Value: No external pullup needed for MR (50kΩ internal); glitch rejection prevents false resets from HDMI hot-plug transients; SOT23-6 saves board area in cost-sensitive consumer design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UR29D3+ | Single-voltage supervisor with +2.93V fixed threshold, 200ms reset timeout, no watchdog timer, SOT23-5 package | Lacks watchdog functionality and manual reset; suitable only for basic power-on reset without runtime fault detection | Select when watchdog is unnecessary and board space permits SOT23-5; not drop-in due to missing WDI/MR pins |
| TPS3808G33DBVR | Single-voltage supervisor with +3.08V threshold, 200ms timeout, no manual reset, push-pull RST, SOT23-6 package | Push-pull RST eliminates need for external pullup but cannot interface directly with bidirectional μP reset pins without series resistor | Choose for simplified reset drive where bidirectional μP interface is not required; pin-compatible but functionally distinct RST behavior |
Compared with MAX6730UTYD3+, MAX6326UR29D3+ omits critical watchdog and manual reset functions, limiting it to basic POR use cases, while TPS3808G33DBVR trades watchdog capability for push-pull output simplicity - making MAX6730UTYD3+ the only option supporting full fault coverage (power, software, operator-initiated) in one SOT23-6 device.
Availability
MAX6730UTYD3+ is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, portable medical devices, and set-top box designs requiring stable component supply, long-lifecycle support, and guaranteed RoHS compliance.
Supply support for MAX6730UTYD3+ 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 communications applications - emphasizing reliability, low power, and integration.
The MAX6730–MAX6735 family targets embedded systems requiring coordinated power supervision, robust watchdog protection, and manual reset capability in minimal footprint - specifically optimized for multivoltage μP-based platforms.
FAQ
What is the exact reset threshold voltage for MAX6730UTYD3+?
The MAX6730UTYD3+ has a factory-set VCC1 reset threshold of +2.188V (typical), with min/max limits of +2.125V and +2.250V respectively, as defined by the 'Y' suffix in its part number per Maxim's Reset Voltage Threshold Suffix Guide. This value is guaranteed over –40°C to +85°C with 20ppm/°C tempco.
Does MAX6730UTYD3+ include a watchdog timer, and what are its timing parameters?
Yes, MAX6730UTYD3+ includes a dual-mode watchdog timer: initial startup delay of 35–72s after reset, followed by normal-mode timeout of 1.12–2.24s. The watchdog input (WDI) must receive a rising or falling edge within each timeout window to prevent WDO assertion. Leaving WDI unconnected does not disable the function.
What package type and pin count does MAX6730UTYD3+ use?
MAX6730UTYD3+ is housed in a RoHS-compliant, lead(Pb)-free SOT23-6 package (outline 21-0058) measuring 2.9mm × 1.6mm. It has six pins: RST, GND, WDO, VCC1, WDI, and MR - fully documented in the Maxim datasheet Figure "Pin Configurations" and Pin Description table.
Is manual reset supported on MAX6730UTYD3+, and how is it implemented?
Yes, MAX6730UTYD3+ includes an active-low manual reset input (MR) with internal 50kΩ pullup to VCC1. Driving MR low forces immediate RST assertion for the full reset timeout period (140–280ms). A normally open momentary switch from MR to GND provides field-service reset capability without external components.
What is the supply current consumption of MAX6730UTYD3+ under typical operating conditions?
MAX6730UTYD3+ draws 14µA typical supply current at +3.6V and +25°C (ICC1 + ICC2), dropping to 10µA at +3.6V and –40°C. This ultra-low quiescent current is confirmed in the Electrical Characteristics table (Note: ICC1 = 10µA min at VCC1 < +3.6V, all I/O open, outputs not asserted).
MAX6730UTYD3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX6730UTYD3+ FAQ
1.How can I place an order for MAX6730UTYD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6730UTYD3+ 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 MAX6730UTYD3+ reliable?
The price and inventory of MAX6730UTYD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6730UTYD3+ is usually 5 days.
3.What payment methods are accepted for MAX6730UTYD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6730UTYD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6730UTYD3+?
MAX6730UTYD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6730UTYD3+ 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 MAX6730UTYD3+?
For technical support, including MAX6730UTYD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6730UTYD3+ requirements.
6.How does Aetrix verify that MAX6730UTYD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6730UTYD3+ 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 MAX6730UTYD3+ meets industry standards.
7.What is the process for return or replacement of MAX6730UTYD3+?
All MAX6730UTYD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6730UTYD3+, 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 MAX6730UTYD3+ part is unused and in its original packaging.
Return procedure for MAX6730UTYD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6730UTYD3+ 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…
