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Analog Devices Inc./Maxim Integrated MAX6336US22D3+T
- Part No.:
- MAX6336US22D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6336US22D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:690
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Product details
Overview
MAX6336US22D3+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, asserts RESET for ≥100ms after power-up or manual reset, operates down to 0.7V supply, draws only 3.3µA at 2.5V, and features debounced MR input - used in portable equipment, automotive ECUs, and industrial controllers requiring reliable brownout detection.
For engineers reviewing the MAX6336US22D3+T datasheet, MAX6336US22D3+T pinout, MAX6336US22D3+T application, or MAX6336US22D3+T equivalent, key selection criteria include guaranteed RESET validity to VCC = 0.7V, SOT143 package compatibility with MAX811/MAX6314, 100ms minimum timeout, and push/pull output drive capability without external pull-up.
Technical Context
The MAX6336US22D3+T implements a precision voltage comparator with ±1.8% (25°C) / ±3% (-40°C to +125°C) threshold tolerance, immune to fast VCC transients via built-in glitch rejection. Its internal MR pull-up resistor (20kΩ) enables direct switch-to-GND connection without external components.
Reset assertion is triggered by VCC falling below 2.20V or MR low, with propagation delay <24µs (VCC falling at 10V/ms). The push/pull output drives RESET low with VOL ≤0.4V at 50µA sink, and high with VOH ≥0.8VCC at 200µA source - ensuring robust interface with µP reset inputs across full temperature range.
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 2.5V systems |
| Reset Timeout Period | 100ms min - guarantees sufficient hold time for µP initialization sequences |
| Supply Voltage Range | 0.7V to 5.5V - supports ultra-low-voltage operation during battery discharge |
| Quiescent Current | 3.3µA (typ) at VCC = 2.5V - minimizes standby power in portable/battery-powered designs |
| Output Type | Push/pull active-low RESET - eliminates need for external pull-up resistor, simplifies PCB layout |
| MR Input Threshold | 0.42V (max) - ensures reliable reset assertion with standard logic-level switches |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial environments |
Pinout & Package
MAX6336US22D3+T is housed in a lead-free 4-pin SOT143 package (3.0mm × 1.6mm × 1.1mm), compatible with reflow soldering and space-constrained applications.
| 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 |
| 2 - RESET | Active-low push/pull output | Drives low during reset condition; actively pulls high when deasserted - no external pull-up required |
| 3 - MR | Manual reset input | Logic-low assertion triggers reset; internal 20kΩ pull-up allows floating if unused; debounced internally |
| 4 - VCC | Power supply input | Monitored supply rail; device remains functional down to 0.7V, enabling early brownout detection |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low operating voltage | Functional down to VCC = 0.7V - enables reset assertion before µP enters undefined state during deep brownout |
| Factory-trimmed reset threshold | 2.20V with ±1.8% room-temp accuracy - eliminates calibration overhead and external resistive dividers |
| Debounced manual reset | Internal filtering of MR input - removes need for RC debounce network or firmware debouncing |
| Transient-immune comparator | Rejects VCC glitches <20µs at 100mV overdrive - prevents spurious resets in noisy power environments |
| Three timeout options | 100ms minimum pulse width - matches boot-time requirements of ARM Cortex-M and legacy 8051-based controllers |
Applications
| Portable Medical Monitors | Automotive Body Control Modules |
|---|---|
Use Scenario: Battery-powered ECG and pulse oximeter devices operating from single-cell Li-ion (2.7V–4.2V) with deep discharge protection. IC Role / Device Role / Timing Role: Supervises main 3.3V LDO output; asserts RESET before VCC drops below 2.20V to prevent memory corruption during shutdown. Use Value: 3.3µA quiescent current extends battery life; 0.7V operation ensures reset remains valid until battery reaches 2.5V cutoff. |
Use Scenario: Under-dash BCM controlling door locks, lighting, and HVAC in vehicles exposed to -40°C to +125°C ambient. IC Role / Device Role / Timing Role: Monitors 5V system rail derived from vehicle battery; provides 100ms reset pulse to MCU on cold crank or load dump recovery. Use Value: -40°C to +125°C qualification and 2.20V threshold match automotive 2.5V logic supply tolerances. |
| Industrial PLC I/O Modules | Smart Energy Meters |
Use Scenario: DIN-rail mounted I/O modules powered from 24VDC converted to 3.3V, subject to field-induced transients. IC Role / Device Role / Timing Role: Detects brownout on 3.3V rail caused by shared power supply overload; holds µP in reset until stable. Use Value: Transient immunity rejects >100mV/20µs noise spikes common in factory floor wiring; push/pull output drives isolated reset optocoupler directly. |
Use Scenario: Revenue-grade meters with tamper detection, operating from split-phase AC with backup supercapacitor. IC Role / Device Role / Timing Role: Monitors 1.8V RTC and secure element supply; asserts reset if capacitor voltage sags below 2.20V during mains outage. Use Value: Factory-trimmed 2.20V threshold aligns with 1.8V supply ±6% tolerance; 100ms timeout exceeds secure boot sequence duration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6314US22D3+T | Same 2.20V threshold and 100ms timeout, but open-drain output | Requires external pull-up; suitable for bidirectional µP reset pins (e.g., 68HC11) | Select when interfacing with µPs needing wired-OR reset arbitration or level translation |
| TPS3124E18DBVR | 2.19V threshold (±0.5%), 200ms timeout, 1.8V–5.5V range, 1.6µA ICC | Higher accuracy, longer timeout, lower current - but not qualified to +125°C | Select for commercial-temperature applications prioritizing precision and ultra-low power over extended temp range |
Compared with MAX6336US22D3+T, MAX6314US22D3+T requires board-level pull-up and lacks push/pull drive strength, while TPS3124E18DBVR offers tighter threshold tolerance and lower current but sacrifices automotive-grade temperature support - making MAX6336US22D3+T optimal for cost-sensitive, high-temp, no-pull-up designs.
Availability
MAX6336US22D3+T is available at Aetrix Electronics and suitable for portable medical monitors, 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 MAX6336US22D3+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and computing applications.
The MAX633x family delivers ultra-low-voltage, low-power µP supervisory circuits with factory-trimmed thresholds and manual reset - engineered for reliability-critical embedded systems where power integrity and reset timing must be guaranteed across voltage and temperature extremes.
FAQ
What is the exact reset threshold voltage of MAX6336US22D3+T?
The MAX6336US22D3+T has a factory-trimmed nominal 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 official datasheet and applies specifically to the "US22" suffix variant of the MAX6336US22D3+T, ensuring precise brownout detection for 2.5V logic rails.
Does MAX6336US22D3+T require an external pull-up resistor on the RESET pin?
No, MAX6336US22D3+T does not require an external pull-up resistor because it features a push/pull output stage. The RESET pin actively drives high when deasserted and low when asserted, eliminating reliance on external biasing - a key differentiator from open-drain alternatives like MAX6337US22D3+T.
What is the minimum supply voltage at which MAX6336US22D3+T guarantees correct RESET output state?
MAX6336US22D3+T guarantees correct RESET output state down to VCC = 0.7V, as explicitly stated in the datasheet for both MAX6335 and MAX6336 variants. This ensures deterministic reset behavior during deep brownout conditions, unlike the MAX6337 variant, which is only guaranteed to 1.0V.
How is the 100ms reset timeout period implemented in MAX6336US22D3+T?
The 100ms minimum reset timeout period in MAX6336US22D3+T is factory-programmed and internally generated - no external capacitor or resistor is needed. It begins timing after VCC rises above 2.20V or after MR returns high, and is fully specified over -40°C to +125°C with typical variation <±20% across temperature, per the "tRP" parameter in Electrical Characteristics.
Is MAX6336US22D3+T pin-compatible with other Maxim supervisory ICs?
Yes, MAX6336US22D3+T is pin-compatible with MAX811/MAX812 and MAX6314/MAX6315 in the same SOT143 package. Pin functions (VCC, GND, RESET, MR) match identically, enabling drop-in replacement in existing layouts - provided output type (push/pull vs. open-drain) and threshold match system requirements.
MAX6336US22D3+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:
- 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 Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6336US22D3+T FAQ
1.How can I place an order for MAX6336US22D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6336US22D3+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 MAX6336US22D3+T reliable?
The price and inventory of MAX6336US22D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6336US22D3+T is usually 5 days.
3.What payment methods are accepted for MAX6336US22D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6336US22D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6336US22D3+T?
MAX6336US22D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6336US22D3+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 MAX6336US22D3+T?
For technical support, including MAX6336US22D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6336US22D3+T requirements.
6.How does Aetrix verify that MAX6336US22D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6336US22D3+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 MAX6336US22D3+T meets industry standards.
7.What is the process for return or replacement of MAX6336US22D3+T?
All MAX6336US22D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6336US22D3+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 MAX6336US22D3+T part is unused and in its original packaging.
Return procedure for MAX6336US22D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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