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Analog Devices Inc./Maxim Integrated MAX6336US20D3+T
- Part No.:
- MAX6336US20D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6336US20D3+T.pdf
- Description:
- IC MPU/RESET CIRC 2.00V SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,727
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Product details
Overview
MAX6336US20D3+T from Maxim Integrated is a push/pull, active-low microprocessor supervisory circuit designed for ultra-low-voltage power monitoring in 1.8V–3.3V digital systems. It asserts reset when VCC falls below 2.00V (±2% at +25°C) or upon debounced manual reset, with guaranteed RESET validity down to VCC = 0.7V and a fixed 100ms minimum timeout period.
For engineers reviewing the MAX6336US20D3+T datasheet, MAX6336US20D3+T pinout, MAX6336US20D3+T application, or MAX6336US20D3+T equivalent, key selection considerations include its 2.0V factory-trimmed reset threshold, SOT143-4 package, 3.3µA supply current at 1.8V, -40°C to +125°C operation, and compatibility with space-constrained battery-powered and automotive control systems.
Technical Context
This device implements a precision voltage comparator with factory-trimmed 2.00V reset threshold (±1.8% at +25°C, ±3% over full temperature range), integrated 100ms reset timeout timer, and internal MR pull-up resistor (20kΩ). The push/pull output drives low during reset and high otherwise, eliminating external pull-up requirements.
It features transient immunity against fast VCC glitches-rejecting negative transients up to 20µs at 100mV overdrive-and operates reliably from VCC = 0.7V, ensuring valid reset assertion during deep brownout conditions common in portable and automotive electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.00V ±1.8% (25°C), ±3% (-40°C to +125°C); ensures reliable brownout detection for 1.8V/2.5V rails |
| Reset Timeout Period | 100ms minimum; guarantees sufficient processor initialization time after power recovery |
| Supply Voltage Range | 0.7V to 5.5V; supports operation during severe undervoltage and enables use in energy-harvesting systems |
| Supply Current | 3.3µA typical at 2.5V, 6.0µA max at 1.8V; minimizes quiescent drain in battery-backed applications |
| Output Type | Active-low push/pull; provides rail-to-rail drive without external pull-up, simplifying µP interface |
| MR Input Threshold | 0.5V max; ensures robust low-level recognition even under weak drive or noisy conditions |
| Operating Temperature | -40°C to +125°C; qualified for under-hood automotive and industrial embedded environments |
Pinout & Package
MAX6336US20D3+T is housed in a 4-pin SOT143 surface-mount package (3.0mm × 1.6mm × 1.1mm), optimized for high-density PCB layouts in portable and automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND | Ground reference | Return path for all internal circuitry; must be connected directly to system ground plane |
| 2 - RESET | Active-low push/pull reset output | Drives low during reset assertion (VCC < 2.00V or MR low) and high otherwise; interfaces directly to µP RESET pin |
| 3 - MR | Debounced manual-reset input | Logic-low pulse ≥160µs asserts reset; internal 20kΩ pull-up allows floating if unused |
| 4 - VCC | Power supply input | Monitored supply rail; powers internal circuitry and enables reset generation down to 0.7V |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 2.00V threshold | Eliminates external resistor divider and calibration, reducing BOM count and layout area |
| 100ms fixed reset timeout | Guarantees adequate processor boot time without requiring external timing components |
| 0.7V minimum operating voltage | Enables valid reset assertion during deep brownout, critical for fail-safe shutdown in automotive ECUs |
| 3.3µA supply current at 2.5V | Extends battery life in always-on monitoring circuits such as telematics and sensor nodes |
| MR debounce & glitch immunity | Internal filtering rejects noise spikes ≤20µs, removing need for external RC networks on reset button lines |
Applications
| Automotive Engine Control Unit (ECU) | Portable Medical Monitor |
|---|---|
|
Use Scenario: Monitors 2.5V microcontroller supply in engine management systems exposed to wide temperature swings and load dump transients. IC Role / Device Role / Timing Role: Supervisory reset generator asserting active-low signal to ARM Cortex-M7 during brownout or cold-cranking. Use Value: Guaranteed operation down to 0.7V and -40°C to +125°C rating ensure deterministic reset behavior during cranking (6V battery sag) and under-hood thermal stress. |
Use Scenario: Powers-on and monitors 1.8V SoC in handheld ECG devices powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Voltage supervisor triggering controlled reboot when battery voltage drops below 2.0V during discharge. Use Value: Ultra-low 3.3µA quiescent current extends runtime between charges; 100ms timeout prevents spurious reboots during brief voltage dips. |
| Industrial PLC I/O Module | Smart Meter Communication Subsystem |
|
Use Scenario: Ensures reliable startup of 3.3V FPGA-based logic in DIN-rail mounted controllers operating in unregulated factory environments. IC Role / Device Role / Timing Role: Power-on reset generator with manual reset capability for field service diagnostics. Use Value: Debounced MR input accepts direct switch connection without external hardware; SOT143 footprint saves board space in compact module designs. |
Use Scenario: Supervises 2.5V power rail feeding RF transceiver and secure MCU in AMI smart meters deployed in outdoor enclosures. IC Role / Device Role / Timing Role: Brownout detector asserting reset to prevent corrupted firmware execution during grid voltage sags. Use Value: Immunity to sub-20µs VCC transients avoids false resets caused by switching noise from meter's power supply or relay drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6314US20D3+T | Same 2.0V threshold and 100ms timeout, but open-drain output; requires external pull-up | Suitable only where bidirectional reset pins (e.g., Motorola 68HC11) or wired-OR logic are needed | Select MAX6314US20D3+T only when open-drain functionality is explicitly required; otherwise MAX6336US20D3+T offers simpler interface |
| MAX811TEUS20+T | 2.0V threshold, 140ms timeout, push/pull output; higher 12µA supply current; rated -40°C to +85°C only | Limited to commercial-temperature applications; lacks extended automotive qualification | Choose MAX811TEUS20+T for cost-sensitive consumer products not requiring extended temperature support |
Compared with MAX6336US20D3+T, MAX6314US20D3+T trades push/pull simplicity for open-drain flexibility, while MAX811TEUS20+T sacrifices automotive temperature range and ultra-low current for legacy design continuity and broader distributor availability.
Availability
MAX6336US20D3+T is available at Aetrix Electronics and suitable for automotive engine control units, portable medical monitors, and industrial PLC I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6336US20D3+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 communications applications.
The MAX633x family delivers ultra-low-voltage, low-power microprocessor supervisory circuits targeting space- and power-constrained systems where reliability under brownout and thermal stress is critical.
FAQ
What is the factory-trimmed reset threshold voltage for MAX6336US20D3+T?
The MAX6336US20D3+T has a factory-trimmed reset threshold of 2.00V, with ±1.8% tolerance at +25°C and ±3% over the full -40°C to +125°C operating range. This value is laser-trimmed during production and documented in Table 1 of the datasheet; it ensures precise brownout detection for 1.8V and 2.5V power rails without external calibration.
Does MAX6336US20D3+T support operation below 1.0V supply voltage?
Yes, MAX6336US20D3+T is fully specified to operate down to VCC = 0.7V and guarantees valid RESET output assertion at that level. Its internal circuitry remains functional and the push/pull output maintains defined logic states, enabling fail-safe reset generation during deep undervoltage events common in automotive cranking and battery-depleted scenarios.
What is the reset timeout period of MAX6336US20D3+T and how is it implemented?
The MAX6336US20D3+T provides a fixed 100ms minimum reset timeout period (tRP), factory-programmed and temperature-stable (±15% over -40°C to +125°C). This timeout begins when VCC rises above 2.00V or MR is deasserted, and ensures the microprocessor receives a sufficiently long reset pulse for complete initialization before release.
Can MAX6336US20D3+T be used with a manual reset switch without external components?
Yes, MAX6336US20D3+T integrates a 20kΩ internal pull-up resistor on the MR pin, allowing direct connection of a normally-open momentary switch between MR and GND. No external RC network is needed-the device provides built-in debouncing, rejecting pulses shorter than 160µs and eliminating switch contact bounce artifacts.
Is MAX6336US20D3+T pin-compatible with other Maxim reset supervisors?
Yes, MAX6336US20D3+T is pin-compatible with MAX811/MAX812 and MAX6314/MAX6315 in the SOT143-4 package. Pin assignments (VCC, RESET, MR, GND) match exactly, enabling drop-in replacement in existing layouts-provided the output type (push/pull vs. open-drain) and timeout period align with system requirements.
MAX6336US20D3+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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2V
- 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
MAX6336US20D3+T FAQ
1.How can I place an order for MAX6336US20D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6336US20D3+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 MAX6336US20D3+T reliable?
The price and inventory of MAX6336US20D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6336US20D3+T is usually 5 days.
3.What payment methods are accepted for MAX6336US20D3+T?
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4.How is shipping managed for MAX6336US20D3+T?
MAX6336US20D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6336US20D3+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 MAX6336US20D3+T?
For technical support, including MAX6336US20D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6336US20D3+T requirements.
6.How does Aetrix verify that MAX6336US20D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6336US20D3+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 MAX6336US20D3+T meets industry standards.
7.What is the process for return or replacement of MAX6336US20D3+T?
All MAX6336US20D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6336US20D3+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 MAX6336US20D3+T part is unused and in its original packaging.
Return procedure for MAX6336US20D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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