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Analog Devices Inc./Maxim Integrated MAX6337US23D3-T
- Part No.:
- MAX6337US23D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6337US23D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,443
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Product details
Overview
MAX6337US23D3-T from Maxim Integrated is an ultra-low-voltage, open-drain microprocessor supervisory circuit designed to monitor 2.3V power supplies in space-constrained embedded systems. It asserts an active-low reset signal when VCC falls below 2.30V or upon manual reset assertion, with a guaranteed minimum 100ms timeout period and valid operation down to VCC = 1.0V. Used in portable equipment and automotive controllers for reliable brownout detection.
For engineers reviewing the MAX6337US23D3-T datasheet, MAX6337US23D3-T pinout, MAX6337US23D3-T application, or MAX6337US23D3-T equivalent, key selection criteria include its 2.3V factory-trimmed reset threshold, 100ms minimum reset timeout, open-drain output architecture for bidirectional µP interface, and SOT143 package compatibility with MAX811/MAX6314 families.
Technical Context
The MAX6337US23D3-T implements a precision voltage comparator with ±1.8% (25°C) and ±3% (-40°C to +125°C) threshold accuracy over temperature, immune to fast VCC transients up to 24µs at 10V/ms slew rate. Its internal 20kΩ pull-up on MR eliminates external debounce components.
As an open-drain RESET device, it interfaces directly with bidirectional microcontroller reset pins (e.g., Motorola 68HC11) using a single external pull-up resistor. Unlike push/pull variants, it does not guarantee RESET validity below VCC = 1.0V and requires external pull-up for logic-level definition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.30V ±1.8% (25°C), ±3% (-40°C to +125°C); factory-trimmed for precise 2.3V supply monitoring |
| Reset Timeout Period | 100ms minimum; ensures sufficient system stabilization after power recovery or manual reset | Supply Voltage Range | 1.0V to 5.5V; operates reliably down to 1.0V (not 0.7V like push/pull variants) |
| Supply Current | 3.3µA typical at 2.5V; enables multi-year battery life in portable applications |
| Output Type | Open-drain active-low RESET; supports wired-OR configurations and bidirectional µP reset pins |
| MR Input | Debounced manual-reset input with 20kΩ internal pull-up; no external RC network required |
| Operating Temperature | -40°C to +125°C; qualified for automotive under-hood and industrial control environments |
Pinout & Package
MAX6337US23D3-T is housed in a 4-pin SOT143 surface-mount package (3.0mm × 1.6mm × 0.9mm), optimized for high-density PCB layouts and compatible with standard SOT143 reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND | Ground reference | Primary return path for internal comparator and reset logic; must be low-impedance connection |
| 2 - RESET | Active-low open-drain output | Drives low during reset assertion; requires external pull-up resistor for logic-high state |
| 3 - MR | Manual reset input | Logic-low assertion triggers reset; internally pulled up to VCC (20kΩ), eliminating external bias |
| 4 - VCC | Power supply input | Supplies internal circuitry; monitors voltage level for reset generation; valid from 1.0V to 5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.30V with ±1.8% room-temp accuracy enables precise 2.3V rail supervision without calibration |
| Open-drain RESET output | Enables direct interface with bidirectional µP reset pins (e.g., 68HC11) via single pull-up resistor |
| Ultra-low quiescent current | 3.3µA typical at 2.5V reduces battery drain in always-on portable instrumentation |
| Transient-immune reset comparator | Rejects VCC glitches ≤24µs at 10V/ms, preventing spurious resets in noisy power environments |
| Guaranteed operation to 1.0V VCC | Ensures deterministic reset behavior during deep brownout conditions common in automotive start-stop systems |
Applications
| Battery-Powered Portable Equipment | Automotive Engine Control Units |
|---|---|
Use Scenario: Handheld test meters and medical sensors operating from single-cell Li-ion batteries experiencing voltage sag during peak load. IC Role / Device Role / Timing Role: Monitors 2.3V regulated rail and asserts reset if battery voltage drops below safe operating threshold. Use Value: Prevents corrupted memory writes and processor lockup by ensuring clean reset before VCC reaches 1.0V. | Use Scenario: Under-hood ECU subjected to load-dump transients and cold-cranking brownouts. IC Role / Device Role / Timing Role: Provides 100ms minimum reset pulse to guarantee full microcontroller initialization after power recovery. Use Value: Eliminates need for external RC timing networks while maintaining AEC-Q100-compatible reliability. |
| Industrial Programmable Logic Controllers | Intelligent Power Meters |
Use Scenario: DIN-rail mounted PLCs powered from unregulated 24VDC supplies with wide input variation. IC Role / Device Role / Timing Role: Supervises local 2.3V logic supply derived from DC-DC converter; debounced MR supports field service reset. Use Value: Reduces BOM count by replacing discrete reset IC + RC + switch with single 4-pin SOT143 device. | Use Scenario: Revenue-grade electricity meters requiring tamper-proof reset during firmware updates. IC Role / Device Role / Timing Role: Generates controlled reset pulse upon button press or communication command via MR pin. Use Value: Open-drain output allows shared reset bus across multiple subsystems without contention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6336US23D3-T | Push/pull active-low RESET output; guaranteed valid down to VCC = 0.7V | Preferred where RESET must remain asserted through deep brownout (<1.0V) | Select when system requires deterministic reset assertion below 1.0V VCC |
| MAX6314US23D3-T | Same 2.3V threshold and 100ms timeout; SOT143 package; pin-compatible | Lower supply current (2.5µA typ) but no MR input; manual reset not supported | Select when manual reset functionality is unnecessary and lowest possible ICC is critical |
Compared with MAX6336US23D3-T, the MAX6337US23D3-T trades VCC-down-to-0.7V reset validity for open-drain flexibility in shared-bus systems; compared with MAX6314US23D3-T, it adds MR support at the cost of slightly higher ICC, enabling field-serviceable reset capability.
Availability
MAX6337US23D3-T is available at Aetrix Electronics and suitable for battery-powered portable equipment, automotive engine control units, and industrial programmable logic controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6337US23D3-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 industrial, automotive, and computing applications, with emphasis on power management and sensor interface solutions.
The MAX6335/MAX6336/MAX6337 family delivers ultra-low-voltage, low-power supervisory circuits targeting space-constrained embedded systems needing reliable reset generation without external components.
FAQ
What is the factory-trimmed reset threshold voltage for MAX6337US23D3-T?
The MAX6337US23D3-T has a factory-trimmed reset threshold of 2.30V, with ±1.8% accuracy at +25°C and ±3% over the full -40°C to +125°C operating range. This value is permanently programmed during manufacturing and corresponds to the "23" suffix in the part number, enabling precise supervision of 2.3V power rails without external calibration.
Does MAX6337US23D3-T support manual reset functionality?
Yes, the MAX6337US23D3-T includes a debounced manual-reset input (MR) pin. A logic-low pulse on MR asserts the active-low RESET signal for the full timeout period (100ms minimum), even if VCC remains above threshold. The MR pin features an internal 20kΩ pull-up resistor, so it may be left unconnected when unused-no external components are required.
What is the minimum supply voltage at which MAX6337US23D3-T guarantees correct reset operation?
The MAX6337US23D3-T guarantees correct reset assertion and deassertion down to VCC = 1.0V. Unlike the MAX6335/MAX6336 variants (guaranteed to 0.7V), the MAX6337US23D3-T's open-drain output architecture limits its low-VCC validity to 1.0V, making it unsuitable for applications requiring reset validity below that level.
Can MAX6337US23D3-T be used with microcontrollers that have bidirectional reset pins?
Yes, the open-drain RESET output of MAX6337US23D3-T is specifically designed for interfacing with bidirectional microcontroller reset pins such as those found on the Motorola 68HC11. When paired with a single external pull-up resistor, it allows either the supervisor or the µP to drive the shared reset line, supporting flexible system-level reset arbitration.
What package type and footprint does MAX6337US23D3-T use?
MAX6337US23D3-T uses a 4-pin SOT143 package (3.0mm × 1.6mm × 0.9mm), with pin 1 = GND, pin 2 = RESET (open-drain), pin 3 = MR, and pin 4 = VCC. It is pin-compatible with MAX811/MAX812 and MAX6314/MAX6315 families, enabling drop-in replacement in existing designs using those footprints.
MAX6337US23D3-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:
- 2.3V
- Output:
- Open Drain or Open Collector
- 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
MAX6337US23D3-T FAQ
1.How can I place an order for MAX6337US23D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6337US23D3-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 MAX6337US23D3-T reliable?
The price and inventory of MAX6337US23D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6337US23D3-T is usually 5 days.
3.What payment methods are accepted for MAX6337US23D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6337US23D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6337US23D3-T?
MAX6337US23D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6337US23D3-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 MAX6337US23D3-T?
For technical support, including MAX6337US23D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6337US23D3-T requirements.
6.How does Aetrix verify that MAX6337US23D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6337US23D3-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 MAX6337US23D3-T meets industry standards.
7.What is the process for return or replacement of MAX6337US23D3-T?
All MAX6337US23D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6337US23D3-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 MAX6337US23D3-T part is unused and in its original packaging.
Return procedure for MAX6337US23D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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