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Analog Devices Inc./Maxim Integrated MAX6336US22D2+T
- Part No.:
- MAX6336US22D2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6336US22D2+T.pdf
- Description:
- IC MPU/RESET CIRC 2.20V SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,938
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Product details
Overview
MAX6336US22D2+T from Maxim Integrated is a push/pull, active-low microprocessor supervisory circuit designed for 1.8V–3.3V digital systems. It monitors VCC with a factory-trimmed 2.20V reset threshold (±1.8% at +25°C, ±3% over –40°C to +125°C), asserts reset for ≥20ms after power-up or manual reset, and operates down to 0.7V supply voltage while consuming only 3.3µA typical current at 2.5V. It is used in portable battery-powered equipment requiring reliable brownout detection and manual reset capability.
For engineers reviewing the MAX6336US22D2+T datasheet, MAX6336US22D2+T pinout, MAX6336US22D2+T application, or MAX6336US22D2+T equivalent, key selection criteria include guaranteed RESET validity to VCC = 0.7V, debounced MR input with internal 20kΩ pull-up, immunity to VCC transients <24µs at 10V/ms, and compatibility with space-constrained SOT143 layouts.
Technical Context
The MAX6336US22D2+T implements a precision bandgap-based reset comparator with factory-trimmed 2.20V threshold and built-in hysteresis to reject fast VCC transients. Its push/pull output drives low during reset assertion and actively pulls high upon timeout completion, eliminating external pull-up components.
It integrates a debounced manual-reset input (MR) with 160µs minimum pulse width requirement and 12ns glitch immunity, and guarantees functional reset behavior across –40°C to +125°C with no external timing components required for its 20ms nominal timeout period.
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 | 20ms min (factory-programmed D2 suffix); holds µP in reset long enough for stable power rail recovery |
| Supply Voltage Range | 0.7V to 5.5V; supports ultra-low-voltage operation during battery depletion or cold-start conditions |
| Supply Current | 3.3µA typ at VCC = 2.5V; enables multi-year battery life in always-on monitoring applications |
| MR Input Threshold | 0.42V max (VCC = 2.6V); ensures robust logic-low recognition even under marginal VCC |
| RESET Output Low Voltage | 0.4V max at ISINK = 50µA, VCC ≥1.0V; guarantees clean TTL/CMOS-compatible low-level assertion |
| RESET Output High Voltage | 0.8×VCC min at ISOURCE = 200µA, VCC ≥1.8V; ensures valid high-state drive without external pull-up |
Pinout & Package
MAX6336US22D2+T is housed in a lead-free 4-pin SOT143 package (3.0mm × 1.6mm × 0.9mm), optimized for high-density PCB layouts and reflow-compatible 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 noise immunity |
| 2 - RESET | Active-low push/pull reset output | Drives low during VCC undervoltage or MR assertion; actively pulls high after timeout-no external pull-up needed |
| 3 - MR | Debounced manual-reset input | Logic-low assertion triggers reset; internal 20kΩ pull-up allows NC usage; 160µs minimum pulse width prevents contact bounce false triggers |
| 4 - VCC | Power supply input | Accepts 0.7V–5.5V; powers internal comparator, timer, and output stage; monitored for reset generation |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.20V with ±1.8% accuracy at +25°C eliminates calibration overhead and reduces BOM count |
| Ultra-low operating voltage | Functional down to 0.7V VCC ensures reset assertion remains valid during deep battery discharge |
| Integrated MR debounce | Hardware-based filtering removes mechanical switch bounce without external RC networks or firmware intervention |
| Transient-immune comparator | Rejects VCC glitches <24µs (at 10V/ms overdrive), preventing spurious resets in noisy power environments |
| Three timeout options | 1ms/20ms/100ms factory-programmed choices (D1/D2/D3) match diverse µP initialization timing requirements |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Battery-powered glucose meters and pulse oximeters operating from single Li-ion cells with wide VCC swing (4.2V → 2.8V). IC Role / Device Role / Timing Role: Monitors VCC decay to trigger controlled shutdown before data corruption; asserts reset if VCC drops below 2.20V during measurement cycle. Use Value: Prevents invalid sensor readings and flash memory write errors by guaranteeing reset assertion down to 0.7V VCC and holding reset for ≥20ms during recovery. |
Use Scenario: DIN-rail mounted I/O modules exposed to 24VDC supply ripple and ESD events in factory automation. IC Role / Device Role / Timing Role: Provides fail-safe power-on reset and brownout protection for ARM-based controller; debounced MR enables field-service reset via front-panel button. Use Value: Eliminates need for external RC timing and Schmitt-trigger buffers, reducing component count while maintaining >125°C operational reliability. |
| Automotive Telematics Units | Smart Energy Meters |
|
Use Scenario: LTE-connected vehicle tracking units powered from automotive battery (9V–16V) with LDO-regulated 3.3V domain. IC Role / Device Role / Timing Role: Supervises 3.3V rail for microcontroller and modem; detects load-dump-induced brownouts and initiates safe state entry. Use Value: Withstands –40°C to +125°C ambient and rejects transients per ISO 7637-2, ensuring reset integrity during engine cranking and alternator load dump. |
Use Scenario: ANSI C12.20-compliant electricity meters using supercapacitor backup during AC mains failure. IC Role / Device Role / Timing Role: Monitors 3.3V backup rail generated from supercap; asserts reset when capacitor voltage decays below 2.20V to halt metering and preserve EEPROM integrity. Use Value: 3.3µA quiescent current extends supercap hold-up time by >15%, enabling full firmware save before power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6314US22D2+T | Same 2.20V threshold and 20ms timeout, but open-drain RESET output requiring external pull-up resistor | Limited to bidirectional µP reset pins (e.g., Motorola 68HC11); not suitable where active-high drive or low-leakage idle state is required | Select when interfacing with legacy µPs needing open-drain reset arbitration or wired-OR bus configurations |
| TPS3808G18DBVR | 2.16V threshold (±0.5% initial accuracy), 20ms timeout, 1.4µA ICC, but requires external capacitor for timeout adjustment | Higher precision threshold and lower current, but adds BOM cost and layout area; less immune to VCC transients (<10µs) | Prefer for high-accuracy, ultra-low-power designs where external capacitor placement is acceptable and transient immunity is secondary |
Compared with MAX6336US22D2+T, MAX6314US22D2+T trades push/pull drive for open-drain flexibility at the cost of an extra resistor, while TPS3808G18DBVR offers tighter threshold tolerance and lower current but sacrifices integrated timing and transient immunity-making MAX6336US22D2+T optimal for compact, robust, no-component-required reset supervision.
Availability
MAX6336US22D2+T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, and automotive telematics units requiring stable component supply, extended temperature support, and lead-free compliance.
Supply support for MAX6336US22D2+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, interface, and reliability-critical applications.
The MAX633x family delivers ultra-low-voltage, low-power µP supervisory circuits targeting battery-operated, automotive, and industrial systems where reset integrity across wide VCC and temperature ranges is non-negotiable.
FAQ
What is the factory-trimmed reset threshold voltage for MAX6336US22D2+T?
The MAX6336US22D2+T has 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 confirmed in Table 1 of the datasheet and applies specifically to the "US22" suffix. The threshold is set during wafer sort and does not require external calibration.
Does MAX6336US22D2+T require an external pull-up resistor on the RESET pin?
No, MAX6336US22D2+T does not require an external pull-up resistor because it features a push/pull output stage. During reset deassertion, the internal driver actively pulls RESET high to ≥0.8×VCC, ensuring valid logic-high levels without external components-unlike open-drain alternatives such as MAX6337US22D2+T.
What is the minimum VCC voltage at which MAX6336US22D2+T guarantees correct RESET output state?
MAX6336US22D2+T guarantees correct RESET output state down to VCC = 0.7V, as explicitly stated in the General Description and Absolute Maximum Ratings sections. This ensures reliable reset assertion during deep brownout or battery exhaustion conditions where other supervisors may fail.
How is the 20ms reset timeout period implemented in MAX6336US22D2+T?
The 20ms minimum reset timeout period in MAX6336US22D2+T is factory-programmed and internally generated-no external capacitor or resistor is needed. It is fixed by the "D2" suffix and remains stable across temperature (±15% variation over –40°C to +125°C), as shown in the Typical Operating Characteristics graph "Normalized Reset Timeout Period vs. Temperature".
Is MAX6336US22D2+T pin-compatible with older Maxim reset ICs?
Yes, MAX6336US22D2+T is pin-compatible with MAX811/MAX812 and MAX6314/MAX6315 in the same SOT143 package. Pin 1 (GND), Pin 2 (RESET), Pin 3 (MR), and Pin 4 (VCC) retain identical functions and physical layout, enabling drop-in replacement in existing designs without PCB modification.
MAX6336US22D2+T 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:
- 2.2V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6336US22D2+T FAQ
1.How can I place an order for MAX6336US22D2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6336US22D2+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 MAX6336US22D2+T reliable?
The price and inventory of MAX6336US22D2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6336US22D2+T is usually 5 days.
3.What payment methods are accepted for MAX6336US22D2+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6336US22D2+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6336US22D2+T?
MAX6336US22D2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6336US22D2+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 MAX6336US22D2+T?
For technical support, including MAX6336US22D2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6336US22D2+T requirements.
6.How does Aetrix verify that MAX6336US22D2+T is sourced from the original manufacturer or authorized distributors?
All MAX6336US22D2+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 MAX6336US22D2+T meets industry standards.
7.What is the process for return or replacement of MAX6336US22D2+T?
All MAX6336US22D2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6336US22D2+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 MAX6336US22D2+T part is unused and in its original packaging.
Return procedure for MAX6336US22D2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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