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Analog Devices Inc./Maxim Integrated MAX6336US24D1+
- Part No.:
- MAX6336US24D1+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6336US24D1+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,179
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Product details
Overview
MAX6336US24D1+ from Maxim Integrated is a push/pull, active-low microprocessor supervisory circuit designed for 1.8V–3.3V digital systems. It monitors VCC supply voltage with a factory-trimmed 2.4V reset threshold, asserts RESET for ≥1ms after power-up or manual reset, operates down to 0.7V VCC, and draws only 3.3µA at 2.5V - enabling reliable brownout detection in battery-powered controllers and portable instrumentation.
For engineers reviewing the MAX6336US24D1+ datasheet, MAX6336US24D1+ pinout, MAX6336US24D1+ application, or MAX6336US24D1+ equivalent, key selection criteria include guaranteed RESET validity to 0.7V, 1ms minimum timeout, debounced manual-reset input (MR), and SOT143 package compatibility with MAX811/MAX812 and MAX6314/MAX6315.
Technical Context
The MAX6336US24D1+ implements a precision bandgap-based reset comparator with ±1.8% (25°C) and ±3% (–40°C to +125°C) threshold accuracy across its 2.4V nominal setting. Its internal MR pull-up resistor (20kΩ) enables direct connection of a momentary switch to GND without external debounce components.
Reset assertion is triggered by either VCC falling below 2.4V or MR pulled low; RESET remains asserted for ≥1ms after VCC rises above threshold or MR is released. The push/pull output drives low to ≤0.4V (at 50µA sink) and high to ≥0.8×VCC (at 200µA source), ensuring robust interfacing with CMOS µP reset inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.4V nominal, factory-trimmed ±1.8% (25°C), ±3% (–40°C to +125°C) - ensures precise brownout detection for 2.5V systems |
| Reset Timeout | 1ms minimum - provides sufficient hold time for µP initialization without excessive system delay |
| Supply Voltage Range | 0.7V to 5.5V - supports ultra-low-voltage operation during deep brownout and full-system power-up |
| Quiescent Current | 3.3µA typical at 2.5V - minimizes battery drain in always-on monitoring applications |
| Output Type | Active-low push/pull - eliminates need for external pull-up resistor and ensures defined logic state during all VCC conditions |
| Operating Temp | –40°C to +125°C - qualified for automotive under-hood and industrial control environments |
| MR Input | Debounced with 20kΩ internal pull-up - allows direct switch-to-GND connection without external RC network |
Pinout & Package
MAX6336US24D1+ is housed in a 4-pin SOT143 package (1.3mm × 2.1mm footprint), compatible with space-constrained PCB layouts and reflow soldering processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for reset comparator and output stage - must be connected directly to system ground plane |
| 2 | RESET | Active-low push/pull output - drives low during reset assertion and high when deasserted; no external pull-up required |
| 3 | MR | Manual-reset input - logic low asserts reset; internally pulled up to VCC (20kΩ); accepts clean or switch-driven signals |
| 4 | VCC | Power supply input - powers internal circuitry and defines reset threshold reference; operates from 0.7V to 5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 0.7V operating voltage | Enables valid reset assertion even during severe brownout - critical for fail-safe shutdown in battery-backed systems |
| Factory-trimmed 2.4V reset threshold | Eliminates external resistor divider calibration - reduces BOM count and improves production yield |
| 1ms minimum reset timeout | Guarantees µP core and peripherals are fully initialized before release - prevents race conditions in complex boot sequences |
| Debounced MR with 20kΩ pull-up | Removes need for external RC filter or firmware debounce - simplifies hardware design and reduces debug cycles |
| SOT143 package compatibility | Enables drop-in replacement for MAX811/MAX812 and MAX6314/MAX6315 - accelerates redesigns and second-sourcing |
Applications
| Battery-Powered Instrumentation | Automotive Body Control Module |
|---|---|
Use Scenario: Handheld multimeter with lithium coin-cell supply subject to voltage sag during measurement bursts. IC Role / Device Role / Timing Role: Monitors VCC and asserts RESET if voltage drops below 2.4V, holding µC in reset until stable supply returns. Use Value: Prevents corrupted ADC readings or EEPROM writes during transient brownout - ensures data integrity without software intervention. | Use Scenario: Door module controlling window lift, mirror adjustment, and interior lighting powered by 12V battery with load-dump transients. IC Role / Device Role / Timing Role: Provides power-on reset and brownout protection for the MCU; MR pin enables service-mode reset via diagnostic tool. Use Value: Guarantees deterministic MCU startup after ignition cycle and prevents erratic behavior during battery voltage fluctuations. |
| Industrial PLC I/O Subsystem | Medical Point-of-Care Monitor |
Use Scenario: Remote sensor node with isolated 3.3V rail derived from 24V field bus, exposed to EMI-induced supply noise. IC Role / Device Role / Timing Role: Detects fast VCC dips using comparator transient immunity; asserts RESET only on sustained undervoltage (>24µs at 100mV overdrive). Use Value: Rejects switching noise while responding to true brownout - avoids spurious resets that disrupt real-time control loops. | Use Scenario: Portable blood glucose meter with single AAA cell, requiring guaranteed reset down to 0.9V before shutdown. IC Role / Device Role / Timing Role: Supervises main 1.8V LDO output; RESET remains valid to 0.7V VCC, ensuring safe shutdown sequence initiation. Use Value: Enables controlled memory save and display blanking before power loss - meets IEC 62304 safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX811TEUS+T | 2.93V reset threshold, 140ms timeout, same SOT143 package and push/pull output | Designed for 3.3V systems with longer reset hold time; not suitable for 2.4V brownout detection | Select when higher threshold and extended timeout are required for legacy 3.3V µPs |
| MAX6314US24D1+ | 2.4V threshold, 1ms timeout, but open-drain output requiring external pull-up | Lacks push/pull drive strength; RESET state undefined during VCC < 1.0V without pull-up | Choose only if open-drain interface is mandatory (e.g., wired-OR reset bus) |
Compared with MAX811TEUS+T and MAX6314US24D1+, the MAX6336US24D1+ uniquely combines 2.4V precision threshold, 1ms timeout, and push/pull drive - delivering optimal balance of accuracy, speed, and interface simplicity for modern low-voltage µP systems.
Availability
MAX6336US24D1+ is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive body control modules, and industrial PLC I/O subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6336US24D1+ 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 power, sensing, and connectivity in demanding industrial, automotive, and medical applications.
The MAX633x family delivers ultra-low-voltage microprocessor supervisory circuits optimized for reliable power monitoring in space- and energy-constrained embedded systems - especially where brownout resilience and minimal external components are critical.
FAQ
What is the exact reset threshold voltage for MAX6336US24D1+?
The MAX6336US24D1+ has a factory-trimmed nominal reset threshold of 2.4V, with tolerance of ±1.8% at +25°C and ±3% over –40°C to +125°C. This value is confirmed in Table 1 of the datasheet and applies specifically to the "US24" suffix. The MAX6336US24D1+ uses this fixed threshold - no external adjustment is possible or required.
Does MAX6336US24D1+ require an external pull-up resistor on the RESET pin?
No, the MAX6336US24D1+ features a push/pull output structure, so it actively drives both high and low states on the RESET pin. Unlike open-drain alternatives, it does not require an external pull-up resistor - simplifying layout and eliminating a potential failure point. This behavior is explicitly specified in the Electrical Characteristics table for VOH and VOL parameters.
What is the minimum VCC voltage at which MAX6336US24D1+ guarantees valid RESET output?
The MAX6336US24D1+ guarantees correct RESET assertion and deassertion down to VCC = 0.7V, as stated in the General Description and Absolute Maximum Ratings sections. This is validated across the full –40°C to +125°C temperature range and enables fail-safe operation during deep brownout conditions where other supervisors may lose output control.
How does the manual-reset (MR) input of MAX6336US24D1+ work?
The MR input of MAX6336US24D1+ is internally pulled up to VCC with a 20kΩ resistor and is debounced in hardware. A logic-low pulse on MR asserts RESET for the full timeout period (≥1ms) after MR returns high. No external RC network or firmware debounce is needed - the MR function is fully self-contained and electrically validated per the MR Minimum Pulse Width specification (160µs at VCC = 2.6V).
Is MAX6336US24D1+ pin-compatible with MAX811/MAX812?
Yes, the MAX6336US24D1+ is pin-compatible with MAX811/MAX812 and MAX6314/MAX6315 in the SOT143 package, as explicitly stated in the Features section. Pin 1 = GND, Pin 2 = RESET, Pin 3 = MR, Pin 4 = VCC - identical mapping and footprint allow direct substitution without PCB modification, provided the reset threshold and timeout requirements align.
MAX6336US24D1+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.4V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6336US24D1+ FAQ
1.How can I place an order for MAX6336US24D1+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6336US24D1+ 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 MAX6336US24D1+ reliable?
The price and inventory of MAX6336US24D1+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6336US24D1+ is usually 5 days.
3.What payment methods are accepted for MAX6336US24D1+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6336US24D1+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6336US24D1+?
MAX6336US24D1+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6336US24D1+ 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 MAX6336US24D1+?
For technical support, including MAX6336US24D1+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6336US24D1+ requirements.
6.How does Aetrix verify that MAX6336US24D1+ is sourced from the original manufacturer or authorized distributors?
All MAX6336US24D1+ 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 MAX6336US24D1+ meets industry standards.
7.What is the process for return or replacement of MAX6336US24D1+?
All MAX6336US24D1+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6336US24D1+, 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 MAX6336US24D1+ part is unused and in its original packaging.
Return procedure for MAX6336US24D1+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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