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Analog Devices Inc./Maxim Integrated MAX6335US16D3
- Part No.:
- MAX6335US16D3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6335US16D3.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:6,570
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Product details
Overview
The MAX6335US16D3 from Maxim Integrated is an ultra-low-voltage, push/pull active-high microprocessor supervisory circuit in a 4-pin SOT143 package. It monitors 1.8V–3.3V power supplies, asserts reset when VCC falls below 1.60V (±3% over temperature), and guarantees valid RESET output down to VCC = 0.7V. Designed for critical µP power monitoring in portable and automotive systems, it features 100ms minimum reset timeout, 3.3µA supply current at 1.8V, and debounced manual-reset input.
For engineers reviewing the MAX6335US16D3 datasheet, MAX6335US16D3 pinout, MAX6335US16D3 application, or MAX6335US16D3 equivalent, key selection criteria include its active-high push/pull RESET output, factory-trimmed 1.60V threshold, guaranteed operation at 0.7V VCC, 100ms timeout, and SOT143 footprint compatibility with MAX811/MAX812 and MAX6314/MAX6315.
Technical Context
This device implements a precision voltage-monitoring comparator with factory-trimmed 1.60V reset threshold (±1.8% at +25°C, ±3% over –40°C to +125°C) and built-in hysteresis to reject fast VCC transients. Its internal reset timer generates a fixed 100ms minimum active period after VCC recovery or MR deassertion.
The MAX6335US16D3 uses a push/pull output stage that sources current during reset assertion (RESET = high), enabling direct interface with high-impedance µP reset inputs without external pull-up. Its MR input includes a 20kΩ internal pull-up and accepts logic-low pulses ≥160µs for reliable manual reset initiation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.60V ±3% over –40°C to +125°C - ensures reliable brownout detection for 1.8V systems |
| Reset Timeout | 100ms minimum - meets boot-time hold requirements for most embedded µPs |
| Supply Voltage Range | 0.7V to 5.5V - supports operation during deep brownout and battery-depleted states |
| Supply Current | 3.3µA typical at 1.8V - enables multi-year battery life in portable equipment |
| Output Type | Active-high push/pull - eliminates need for external pull-up resistor on RESET line |
| MR Input Threshold | 0.42V max at VCC = 2.6V - ensures noise-immune manual reset activation |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial environments |
Pinout & Package
MAX6335US16D3 is housed in a 4-pin SOT143 package (JEDEC TO-236AB), measuring 2.9mm × 1.3mm × 1.0mm, with gull-wing leads and lead-free (RoHS-compliant) option available as MAX6335US16D3+T.
| 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-high reset output | Push/pull driver that sources current to hold µP reset pin high during fault conditions; no external pull-up required |
| 3 - MR | Manual reset input | Logic-low–activated input with 20kΩ internal pull-up; accepts momentary switch to GND; debounce handled internally |
| 4 - VCC | Power supply input | Monitored supply rail; device operates and asserts reset down to 0.7V, supporting ultra-low-voltage brownout detection |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 1.60V threshold | Eliminates external resistor divider and calibration, reducing BOM count and board space in space-constrained designs |
| 100ms reset timeout | Guarantees sufficient hold time for full µP initialization and peripheral settling before release |
| 0.7V minimum operating voltage | Enables valid reset assertion during severe brownout or battery sag, preventing undefined µP behavior |
| Debounced MR input | Removes need for external RC filter or firmware debouncing, simplifying system-level reset architecture |
| 4-pin SOT143 footprint | Provides pin compatibility with MAX811/MAX812 and MAX6314/MAX6315, enabling drop-in replacement in existing layouts |
Applications
| Battery-Powered IoT Sensors | Automotive Body Control Modules |
|---|---|
Use Scenario: Long-life sensor nodes powered by coin-cell batteries monitor environmental parameters and transmit data intermittently. IC Role / Device Role / Timing Role: Supervises VCC during cold-start and low-battery conditions, asserting active-high RESET to prevent µC execution until stable 1.8V rail is established. Use Value: 3.3µA quiescent current extends battery life; 0.7V operation ensures reset remains valid even as battery discharges to endpoint voltage. | Use Scenario: Central body controller manages door locks, lighting, and window motors in vehicles exposed to wide ambient temperatures. IC Role / Device Role / Timing Role: Monitors 2.5V/3.3V domain supplies and provides 100ms reset pulse during ignition cycling and load-dump transients. Use Value: –40°C to +125°C qualification and 1.60V threshold ensure reliable brownout detection across automotive temperature extremes. |
| Industrial PLC I/O Modules | Medical Handheld Diagnostics |
Use Scenario: DIN-rail mounted I/O modules condition analog inputs and communicate via RS-485 in electrically noisy factory environments. IC Role / Device Role / Timing Role: Detects VCC sags caused by EMI-induced rail collapse and asserts RESET to halt µP execution until power stabilizes. Use Value: Reset comparator immunity to sub-20µs negative transients prevents spurious resets during switching noise events. | Use Scenario: Portable diagnostic devices use rechargeable Li-ion batteries and require fail-safe boot sequencing for FDA-critical firmware validation. IC Role / Device Role / Timing Role: Provides deterministic reset timing and voltage supervision during battery insertion, charge termination, and thermal shutdown events. Use Value: Active-high push/pull output interfaces directly with ARM Cortex-M reset pins without pull-up, reducing component count and layout risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX811SUR29D3-T | 2.93V reset threshold, 140ms timeout, same SOT143 package and push/pull active-high output | Targeted at 3.3V systems requiring higher threshold; not suitable for 1.8V brownout detection | Select when supervising 3.3V rails where 2.93V trip point aligns with system margin requirements |
| MAX6315US16D3-T | Identical 1.60V threshold and 100ms timeout, but open-drain active-low output; same SOT143 footprint | Requires external pull-up and interfaces with µPs expecting active-low reset; incompatible with active-high-only inputs | Choose only if system design mandates open-drain signaling or bidirectional reset bus sharing |
Compared with MAX811SUR29D3-T and MAX6315US16D3-T, the MAX6335US16D3 uniquely combines 1.60V threshold, active-high push/pull output, and 0.7V operational floor-making it the only option among the three for robust 1.8V system brownout protection without external components.
Availability
MAX6335US16D3 is available at Aetrix Electronics and suitable for battery-powered IoT sensors, automotive body control modules, and industrial PLC I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6335US16D3 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, communications, and computing markets.
The MAX6335 series belongs to Maxim's µP supervisory product line, engineered specifically for ultra-low-voltage power monitoring and deterministic reset generation in space- and power-constrained embedded systems.
FAQ
What is the factory-trimmed reset threshold voltage for MAX6335US16D3?
The MAX6335US16D3 has a factory-trimmed reset threshold of 1.60V, 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 specified in Table 1 of the MAX6335/MAX6336/MAX6337 datasheet. The threshold ensures precise brownout detection for 1.8V digital systems without external calibration components.
Does MAX6335US16D3 support operation below 1.0V supply voltage?
Yes, the MAX6335US16D3 is fully specified to operate down to 0.7V VCC and guarantees valid active-high RESET output at that level. This capability allows the device to assert reset during deep brownout conditions where other supervisors fail, making MAX6335US16D3 especially valuable in battery-powered applications nearing end-of-discharge.
What is the reset timeout duration for MAX6335US16D3, and is it adjustable?
The MAX6335US16D3 provides a fixed 100ms minimum reset timeout period after VCC rises above the 1.60V threshold or after manual reset (MR) is deasserted. This duration is factory-programmed and non-adjustable; it is confirmed in the Selector Guide and Electrical Characteristics table under parameter tRP for suffix "D3". No external capacitor or resistor modifies this timing.
Can MAX6335US16D3 replace MAX811 in an existing design?
Yes, MAX6335US16D3 is pin-compatible with MAX811/MAX812 in the SOT143 package and shares identical pinout (GND, RESET, MR, VCC). However, MAX6335US16D3 features active-high RESET versus MAX811's active-low output, so schematic review is required to confirm µP reset pin polarity compatibility before substitution.
What is the maximum supply current consumption of MAX6335US16D3 at 1.8V?
The MAX6335US16D3 draws 3.3µA typical supply current at 1.8V and +25°C, with a maximum of 6.0µA over the full –40°C to +125°C temperature range. This ultra-low ICC enables multi-year operation in energy-harvesting and battery-backed applications, and is measured with RESET not asserted and no load on MR or RESET pins.
MAX6335US16D3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.6V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-4
MAX6335US16D3 FAQ
1.How can I place an order for MAX6335US16D3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6335US16D3 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 MAX6335US16D3 reliable?
The price and inventory of MAX6335US16D3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6335US16D3 is usually 5 days.
3.What payment methods are accepted for MAX6335US16D3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6335US16D3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6335US16D3?
MAX6335US16D3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6335US16D3 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 MAX6335US16D3?
For technical support, including MAX6335US16D3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6335US16D3 requirements.
6.How does Aetrix verify that MAX6335US16D3 is sourced from the original manufacturer or authorized distributors?
All MAX6335US16D3 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 MAX6335US16D3 meets industry standards.
7.What is the process for return or replacement of MAX6335US16D3?
All MAX6335US16D3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6335US16D3, 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 MAX6335US16D3 part is unused and in its original packaging.
Return procedure for MAX6335US16D3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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