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Analog Devices Inc./Maxim Integrated MAX6336US18D3-T
- Part No.:
- MAX6336US18D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6336US18D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,162
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Product details
Overview
MAX6336US18D3-T from Maxim Integrated is a push/pull, active-low microprocessor supervisory circuit designed for 1.8V power supply monitoring in space-constrained embedded systems. It asserts reset when VCC falls below 1.80V (±1.8% at +25°C, ±3% over -40°C to +125°C), provides 100ms minimum reset timeout, draws only 3.0–6.0µA at 1.8V, and operates down to 0.7V supply - enabling reliable brownout detection in battery-powered controllers and portable instrumentation.
For engineers reviewing the MAX6336US18D3-T datasheet, MAX6336US18D3-T pinout, MAX6336US18D3-T application, or MAX6336US18D3-T equivalent, key selection criteria include guaranteed RESET validity to VCC = 0.7V, factory-trimmed 1.8V threshold with tight temperature stability, SOT143 footprint compatibility with MAX811/MAX812, and manual-reset debouncing without external components.
Technical Context
The MAX6336US18D3-T implements a precision bandgap-based voltage comparator with factory-trimmed 1.80V reset threshold and internal hysteresis to reject fast VCC transients up to 24µs at 10V/ms slew rate. Its push/pull output drives low actively and high actively, eliminating need for external pull-up resistors while ensuring defined logic states across full operating range.
Reset assertion is synchronized to both power-supply faults (VCC < 1.80V) and debounced manual-reset input (MR), with guaranteed reset timeout of ≥100ms after VCC recovery or MR release. The device maintains functional RESET/RESET validity down to VCC = 0.7V - critical for ultra-low-voltage µP initialization sequences in automotive and industrial control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.80V ±1.8% (25°C), ±3% (-40°C to +125°C); ensures precise 1.8V rail monitoring without calibration |
| Reset Timeout Period | ≥100ms; guarantees sufficient hold time for µP core and peripheral initialization |
| Supply Voltage Range | 0.7V to 5.5V; supports operation during deep brownout and enables use with Li-ion, coin-cell, or energy-harvesting sources |
| Quiescent Current | 3.0–6.0µA at VCC = 1.8V; minimizes standby power in always-on portable equipment |
| Output Type | Active-low push/pull; delivers defined high/low states without external pull-up, simplifying interface to µP reset pins |
| MR Input Threshold | 0.42V typical; compatible with standard CMOS/LVTTL logic levels and robust against noise |
| Operating Temperature | -40°C to +125°C; qualified for under-hood automotive and industrial motor-control environments |
Pinout & Package
MAX6336US18D3-T is housed in a 4-pin SOT143 package (3.0mm × 1.6mm × 0.9mm), optimized for high-density PCB layouts and compatible with automated pick-and-place assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: GND | Ground reference | Return path for all internal circuitry; must be connected to system ground plane for stable reset threshold accuracy |
| 2: RESET | Active-low push/pull reset output | Drives low during fault or manual reset; actively pulls high after timeout - eliminates need for external pull-up resistor |
| 3: MR | Debounced manual-reset input | Logic-low assertion triggers reset; internal 20kΩ pull-up allows direct switch-to-ground connection without external components |
| 4: VCC | Power supply input | Monitored voltage rail; powers internal circuitry and enables operation down to 0.7V for ultra-low-voltage sequencing |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 1.8V threshold | 1.80V ±1.8% at +25°C enables accurate 1.8V core rail supervision without external calibration or trimming |
| 100ms minimum reset timeout | Guarantees µP reset pulse meets ARM Cortex-M, PIC, and MSP430 minimum assertion time requirements |
| 0.7V minimum operating voltage | Ensures valid reset assertion during deep brownout conditions where other supervisors fail |
| Integrated MR debounce | Eliminates need for RC filters or firmware debouncing - reduces BOM count and layout area |
| SOT143 pin compatibility | Direct drop-in replacement for MAX811/MAX812 and MAX6314/MAX6315 in existing designs |
Applications
| Industrial PLC Controllers | Battery-Powered Data Loggers |
|---|---|
|
Use Scenario: Programmable logic controllers operating in factory-floor environments with fluctuating 1.8V I/O rails and EMI-induced supply glitches. IC Role / Device Role / Timing Role: Monitors 1.8V VCC and asserts active-low reset to ARM Cortex-M7 MCU upon brownout or operator-initiated emergency stop. Use Value: Guaranteed RESET validity down to 0.7V prevents spurious resets during transient dips, while 100ms timeout ensures full peripheral reinitialization before program execution resumes. |
Use Scenario: Remote environmental sensors powered by single-cell Li-ion batteries discharging from 2.8V to 1.8V over multi-year deployments. IC Role / Device Role / Timing Role: Supervises declining 1.8V supply rail and triggers controlled shutdown/reset sequence before undervoltage lockout corrupts flash memory writes. Use Value: Ultra-low 3.3µA quiescent current extends battery life; factory-trimmed 1.80V threshold aligns precisely with battery end-of-life voltage, maximizing usable capacity. |
| Automotive Body Control Modules | Medical Handheld Diagnostics |
|
Use Scenario: Under-hood BCMs exposed to -40°C cold cranking and +125°C engine bay temperatures with noisy 1.8V CAN transceiver supplies. IC Role / Device Role / Timing Role: Provides temperature-stable reset signaling to Infineon AURIX TC3xx MCU during ignition cycles and load-dump events. Use Value: ±3% threshold tolerance over full -40°C to +125°C range ensures consistent trip point across extreme thermal profiles, reducing field failure risk. |
Use Scenario: Portable ultrasound and glucose meters requiring FDA-compliant power-on self-test and fail-safe reset during battery insertion or low-power mode transitions. IC Role / Device Role / Timing Role: Generates deterministic 100ms reset pulse on power-up and manual button press to initialize ADC, display, and BLE radio subsystems. Use Value: Debounced MR input eliminates false triggers from mechanical switch bounce; push/pull output ensures clean reset edge without pull-up resistor parasitics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX811SUR29D3-T | Fixed 2.93V reset threshold; 140ms timeout; same SOT143 package and push/pull output | Designed for 3.3V systems; not suitable for 1.8V rail monitoring without external divider | Select when supervising higher-voltage rails where 2.93V threshold matches system requirements |
| TPS3808G18DBVR | 1.8V threshold with ±0.5% initial accuracy; 200ms timeout; 1.5µA ICC; same SOT23-5 pinout (not pin-compatible) | Requires PCB redesign due to different pin count and layout; superior accuracy but higher cost | Choose for high-precision applications demanding tighter threshold tolerance and lower quiescent current |
Compared with MAX811SUR29D3-T and TPS3808G18DBVR, the MAX6336US18D3-T uniquely combines factory-trimmed 1.8V threshold, 0.7V operational floor, and SOT143 pinout - making it the only option that delivers exact 1.8V supervision without external components or layout changes in legacy space-constrained designs.
Availability
MAX6336US18D3-T is available at Aetrix Electronics and suitable for industrial PLC controllers, battery-powered data loggers, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6336US18D3-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 industrial, automotive, and communications applications.
The MAX633x family delivers ultra-low-voltage, low-power µP reset supervision targeting space- and power-constrained embedded systems requiring guaranteed operation down to 0.7V and factory-trimmed thresholds.
FAQ
What is the factory-trimmed reset threshold voltage for MAX6336US18D3-T?
The MAX6336US18D3-T has a factory-trimmed reset threshold of 1.80V, with ±1.8% tolerance at +25°C and ±3% over the full -40°C to +125°C operating temperature range. This value is laser-trimmed during manufacturing and documented in Table 1 of the datasheet; it enables precise supervision of 1.8V digital rails without external calibration components.
Does MAX6336US18D3-T support manual reset functionality?
Yes, the MAX6336US18D3-T includes a debounced manual-reset (MR) input on Pin 3. A logic-low signal on MR asserts the active-low RESET output for the full timeout period (≥100ms), and the internal 20kΩ pull-up resistor allows direct connection of a momentary switch to ground - no external RC network or firmware debouncing is required.
What is the minimum supply voltage at which MAX6336US18D3-T remains functional?
The MAX6336US18D3-T is guaranteed to operate and assert valid RESET/RESET signals down to VCC = 0.7V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. This ultra-low operating voltage enables reliable brownout detection in energy-harvesting and single-cell battery systems where supply may dip below 1.0V during peak loads.
Is MAX6336US18D3-T pin-compatible with other Maxim reset ICs?
Yes, the MAX6336US18D3-T uses the 4-pin SOT143 package and shares identical pinout with MAX811/MAX812 and MAX6314/MAX6315. Pin 1 is GND, Pin 2 is RESET, Pin 3 is MR, and Pin 4 is VCC - enabling drop-in replacement in existing layouts without PCB modification.
What is the typical supply current consumption of MAX6336US18D3-T at 1.8V?
The MAX6336US18D3-T draws 3.0µA (typical) to 6.0µA (maximum) of supply current at VCC = 1.8V and TA = +25°C, as specified in the Electrical Characteristics table. This ultra-low quiescent current makes it ideal for battery-powered applications where standby power budget is tightly constrained.
MAX6336US18D3-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.8V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6336US18D3-T FAQ
1.How can I place an order for MAX6336US18D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6336US18D3-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 MAX6336US18D3-T reliable?
The price and inventory of MAX6336US18D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6336US18D3-T is usually 5 days.
3.What payment methods are accepted for MAX6336US18D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6336US18D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6336US18D3-T?
MAX6336US18D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6336US18D3-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 MAX6336US18D3-T?
For technical support, including MAX6336US18D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6336US18D3-T requirements.
6.How does Aetrix verify that MAX6336US18D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6336US18D3-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 MAX6336US18D3-T meets industry standards.
7.What is the process for return or replacement of MAX6336US18D3-T?
All MAX6336US18D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6336US18D3-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 MAX6336US18D3-T part is unused and in its original packaging.
Return procedure for MAX6336US18D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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