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Analog Devices Inc./Maxim Integrated MAX6335US22D3+T
- Part No.:
- MAX6335US22D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6335US22D3+T.pdf
- Description:
- IC MPU/RESET CIRC 2.20V SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX6335US22D3+T from Maxim Integrated is an ultra-low-voltage microprocessor supervisory circuit with active-high push/pull RESET output, 2.20V factory-trimmed reset threshold, and 100ms minimum reset timeout period. It monitors 1.8V–3.3V power supplies in embedded controllers and portable equipment, asserting reset during brownout or manual reset events while operating down to VCC = 0.7V. Designed for critical µP power monitoring in space-constrained applications.
For engineers reviewing the MAX6335US22D3+T datasheet, MAX6335US22D3+T pinout, MAX6335US22D3+T application, or MAX6335US22D3+T equivalent, key selection criteria include guaranteed RESET validity to 0.7V, debounced manual-reset input, SOT143 package compatibility with MAX811/MAX812, and precise 2.20V threshold tolerance (±1.8% at +25°C, ±3% over -40°C to +125°C).
Technical Context
The MAX6335US22D3+T implements a precision voltage comparator with factory-trimmed 2.20V reset threshold and built-in hysteresis to reject fast VCC transients up to 24µs at 10V/ms slew rate. Its internal 20kΩ MR pull-up resistor enables direct connection of a momentary switch to GND without external debounce components.
Reset assertion is triggered by either VCC falling below 2.20V or MR pulled low, and remains active for ≥100ms after VCC rises above threshold or MR returns high. The push/pull output drives high with VOH ≥0.8VCC (ISOURCE = 200µA, VCC ≥1.8V) and low with VOL ≤0.3V (ISINK = 500µA, VCC ≥1.8V), ensuring robust interfacing with CMOS µP reset inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.20V ±1.8% (25°C), ±3% (-40°C to +125°C); ensures accurate brownout detection for 2.2V nominal rails |
| Reset Timeout Period | 100ms minimum; guarantees sufficient µP initialization time after power recovery |
| Supply Voltage Range | 0.7V to 5.5V; supports operation during deep brownout and battery-depleted states |
| Supply Current | 3.0µA (typ) at VCC = 1.8V; enables multi-year battery life in portable systems |
| MR Input Threshold | 0.5V max; compatible with 1.8V/2.5V logic levels and tolerant of noise on manual reset line |
| Output Type | Active-high push/pull RESET; eliminates need for external pull-up resistor in most µP interfaces |
| Operating Temperature | -40°C to +125°C; qualified for automotive under-hood and industrial control environments |
Pinout & Package
MAX6335US22D3+T is housed in a 4-pin SOT143 package (3.0mm × 1.6mm × 1.1mm), optimized for space-critical PCB layouts and compatible with standard SOT143 reflow profiles.
| 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 timing |
| 2 - RESET | Active-high reset output | Drives high during reset assertion; directly interfaces with µP reset pins requiring active-high logic |
| 3 - MR | Manual reset input | Logic-low assertion triggers reset; internal 20kΩ pull-up allows floating when unused |
| 4 - VCC | Power supply input | Monitored voltage rail; powers internal circuitry and enables reset assertion below 2.20V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 0.7V operating supply | Enables valid reset assertion even during severe brownout conditions where VCC drops near device cutoff |
| Debounced manual-reset input | Eliminates need for external RC filter or Schmitt-trigger circuitry, reducing BOM count and board area |
| Factory-trimmed 2.20V threshold | Provides ±1.8% accuracy at room temperature, removing calibration steps in production test |
| 100ms minimum reset timeout | Guarantees full µP core and peripheral initialization before release, preventing boot failures |
| 4-pin SOT143 package | Reduces footprint by >50% vs. SO-8 alternatives, supporting high-density portable and automotive modules |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Power monitoring in programmable logic controllers exposed to wide-input 12V/24V supply variations and EMI-rich factory environments. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high reset to ARM Cortex-M7 µP during undervoltage events. Use Value: Guaranteed RESET validity down to VCC = 0.7V prevents spurious resets during transient dips, improving system uptime. |
Use Scenario: Reset management for infotainment head units powered from vehicle battery with cold-crank voltage sag to 6V. IC Role / Device Role / Timing Role: Brownout detector triggering 100ms reset pulse to ensure complete SoC reboot after engine start. Use Value: Factory-trimmed 2.20V threshold matches 2.2V LDO output rails, eliminating external resistor dividers. |
| Portable Medical Sensors | Smart Energy Meters |
|
Use Scenario: Battery-powered glucose monitors using single-cell Li-ion (2.7V–4.2V) with low-power sleep modes. IC Role / Device Role / Timing Role: Ultra-low-current (3.0µA typ) supervisor maintaining reset integrity during multi-week standby. Use Value: 0.7V minimum VCC operation extends usable battery range into deep discharge, delaying end-of-life alerts. |
Use Scenario: ANSI C12.20-compliant electricity meters requiring tamper-resistant power-fail detection. IC Role / Device Role / Timing Role: Dual-role supervisor monitoring both main 3.3V rail and backup supercapacitor 2.2V rail. Use Value: Pin-compatible replacement for MAX811 simplifies legacy design refresh while adding tighter 2.20V threshold accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX811TEUS29D3+T | 2.93V reset threshold, same SOT143 package and 100ms timeout, but only specified down to VCC = 1.0V | Not suitable for sub-1.0V brownout detection; requires higher VCC margin for valid reset assertion | Select when system rail is ≥2.9V and 0.7V operation is unnecessary |
| TLV803EB22DBZR | 2.2V threshold, SOT23-3 package, 200ms timeout, but no manual reset input or MR debounce | Lacks MR functionality; cannot support operator-initiated reset or test-mode cycling | Choose for cost-sensitive, MR-free designs where longer timeout improves reliability |
Compared with MAX811TEUS29D3+T and TLV803EB22DBZR, the MAX6335US22D3+T uniquely combines 0.7V operational capability, debounced MR, and precise 2.20V threshold in a 4-pin SOT143-enabling robust reset assurance in deep-brownout portable and automotive systems where other alternatives fail to assert valid reset.
Availability
MAX6335US22D3+T is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and portable medical sensors requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6335US22D3+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 power, sensing, and interface applications in industrial, automotive, and communications markets.
The MAX6335 series belongs to Maxim's microprocessor supervisory product line, engineered specifically for ultra-low-voltage, low-power reset monitoring in battery-operated and harsh-environment embedded systems.
FAQ
What is the exact reset threshold voltage of MAX6335US22D3+T?
The MAX6335US22D3+T features a factory-trimmed reset threshold of 2.20V, 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 verified per Table 1 in the datasheet; it applies specifically to the "US22" suffix and is not adjustable in-circuit.
Does MAX6335US22D3+T support manual reset functionality?
Yes, MAX6335US22D3+T includes a dedicated MR (manual reset) input on pin 3. A logic-low pulse ≥160µs on MR asserts the active-high RESET output for ≥100ms after MR returns high. An internal 20kΩ pull-up resistor allows MR to float when unused, eliminating external components for basic manual reset implementation.
What is the minimum supply voltage required for MAX6335US22D3+T to guarantee valid RESET output?
MAX6335US22D3+T guarantees correct RESET output state down to VCC = 0.7V, as confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables. Below this voltage, the push/pull driver may not maintain valid logic levels-hence the 0.7V lower limit is a hard specification, not a typical value.
Is MAX6335US22D3+T pin-compatible with other Maxim reset supervisors?
Yes, MAX6335US22D3+T is pin-compatible with MAX811/MAX812 and MAX6314/MAX6315 in the SOT143 package. Pin assignments (GND, RESET, MR, VCC) match exactly, enabling drop-in replacement in existing layouts-provided the reset threshold and output polarity requirements align with the target application.
What is the supply current consumption of MAX6335US22D3+T at 1.8V?
At VCC = 1.8V and TA = +25°C, MAX6335US22D3+T draws 3.0µA (typical) and 6.0µA (maximum) supply current with RESET not asserted. This ultra-low quiescent current is measured under no-load conditions and enables multi-year operation in coin-cell–powered devices.
MAX6335US22D3+T 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:
- 2.2V
- 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-143-4
MAX6335US22D3+T FAQ
1.How can I place an order for MAX6335US22D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6335US22D3+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 MAX6335US22D3+T reliable?
The price and inventory of MAX6335US22D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6335US22D3+T is usually 5 days.
3.What payment methods are accepted for MAX6335US22D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6335US22D3+T transactions.
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4.How is shipping managed for MAX6335US22D3+T?
MAX6335US22D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6335US22D3+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 MAX6335US22D3+T?
For technical support, including MAX6335US22D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6335US22D3+T requirements.
6.How does Aetrix verify that MAX6335US22D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6335US22D3+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 MAX6335US22D3+T meets industry standards.
7.What is the process for return or replacement of MAX6335US22D3+T?
All MAX6335US22D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6335US22D3+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 MAX6335US22D3+T part is unused and in its original packaging.
Return procedure for MAX6335US22D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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