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Analog Devices Inc./Maxim Integrated MXD1817XR22+
- Part No.:
- MXD1817XR22+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MXD1817XR22+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,182
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Product details
Overview
MXD1817XR22+ from Maxim Integrated is a low-power microprocessor reset supervisor IC with active-high push-pull RESET output, factory-set 2.18V reset threshold (±2.5% over temperature), 100ms minimum reset timeout, and operation down to VCC = +1.0V. It monitors +2.5V/+3.0V/+3.3V supply rails in portable and industrial embedded systems requiring reliable power-on reset and brownout protection.
For engineers reviewing the MXD1817XR22+ datasheet, MXD1817XR22+ pinout, MXD1817XR22+ application, or MXD1817XR22+ equivalent, key selection criteria include its SC70-3 package, 4µA typical supply current, debounced manual-reset capability (not applicable - MXD1817 lacks pushbutton detect), and compatibility with systems demanding guaranteed RESET validity at low VCC.
Technical Context
The MXD1817XR22+ implements a precision bandgap-based voltage comparator with hysteresis to monitor VCC against a fixed 2.18V threshold, asserting RESET when VCC falls below this level. Its internal timer guarantees a minimum 100ms reset pulse width after VCC recovers above threshold, independent of VCC slew rate.
As an active-high push-pull device, MXD1817XR22+ drives RESET high during reset assertion and low otherwise - eliminating need for external pullup/pulldown resistors. It operates across -40°C to +105°C and maintains valid logic states down to VCC = +1.0V, enabling robust reset behavior during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.18V ±2.5% over -40°C to +105°C - ensures accurate detection of 2.5V/3.0V/3.3V supply brownout without calibration. |
| Reset Timeout Period | 100ms minimum - guarantees sufficient processor initialization time after power recovery. |
| Supply Current | 4µA typical at +3.6V - enables multi-year battery life in portable equipment. |
| VCC Operating Range | +1.0V to +5.5V - supports valid RESET output even during severe undervoltage events. |
| Output Type | Active-high push-pull - provides direct drive to µP reset inputs without external components. |
| Package | 3-pin SC70 - 2.0mm × 1.25mm footprint ideal for space-constrained PCBs. |
| Temperature Range | -40°C to +105°C - qualified for industrial and extended-temperature applications. |
Pinout & Package
MXD1817XR22+ is housed in a 3-pin SC70 package (outline X3-2), with pin 1 = RESET (active-high push-pull), pin 2 = VCC (supply and threshold monitor input), and pin 3 = GND. The compact 2.0mm × 1.25mm body height of 0.9mm supports high-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output - asserts high during reset condition; sinks 10mA min when low, sources 350µA min when high. |
| 2 | VCC | Power supply input and reset threshold reference - monitored continuously; device functional down to +1.0V. |
| 3 | GND | Ground reference for all internal circuitry and output stage - must be low-impedance connection. |
Key Features
| Feature | Design Value |
|---|---|
| Precision reset threshold | 2.18V with ±2.5% accuracy over full temperature range - eliminates need for external trimming or calibration. |
| No external components required | Self-contained reset generation - no capacitors, resistors, or pullups needed for basic operation. |
| Low quiescent current | 4µA typical - reduces system standby power and extends battery life in portable designs. |
| Guaranteed operation to VCC = +1.0V | Valid RESET logic states maintained down to 1V - ensures deterministic reset behavior during deep brownout. |
| Transient immunity | Rejects fast negative-going VCC glitches up to 100µs (at 200mV overdrive) - prevents false resets from noise. |
Applications
| Industrial PLC Controllers | Portable Medical Monitors |
|---|---|
Use Scenario: Power-up sequencing and brownout recovery in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Supervisory reset generator ensuring µP enters known state before firmware execution begins. Use Value: Prevents erratic operation or memory corruption during unstable mains-derived 3.3V rail transitions. |
Use Scenario: Battery-powered ECG or glucose meters requiring long shelf life and reliable cold-start behavior. IC Role / Device Role / Timing Role: Active-high reset source synchronized to Li-ion battery discharge profile. Use Value: 4µA supply current extends usable battery life by >2 years; 2.18V threshold matches nominal 2.5V LDO output. |
| Smart Energy Meters | Automotive Infotainment Modules |
Use Scenario: Metering units exposed to wide ambient temperatures and intermittent AC/DC power sources. IC Role / Device Role / Timing Role: Voltage supervisor validating 3.3V microcontroller supply before secure boot sequence. Use Value: -40°C to +105°C rating and ±2.5% threshold stability ensure consistent reset timing across seasonal extremes. |
Use Scenario: Head unit subsystems powered from vehicle 12V-to-3.3V DC/DC converters subject to load dump transients. IC Role / Device Role / Timing Role: Brownout detector preventing firmware crash during engine cranking voltage sag. Use Value: Immunity to sub-100µs VCC dips avoids spurious resets while maintaining response to sustained undervoltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TR22+T | Same 2.18V threshold, SOT23-3 package, but open-drain active-low output and 1.6µA typical ICC. | Requires external pullup resistor; incompatible with µPs needing active-high reset input. | Select MAX809TR22+T only if board layout already uses open-drain reset topology and low ICC is critical. |
| TPS3808G12DBVR | 2.16V threshold, 1.5µA ICC, adjustable delay via capacitor, but 5-pin SOT23 package. | Offers programmable timeout but requires PCB area for timing capacitor and additional routing. | Choose TPS3808G12DBVR when design flexibility for custom reset duration outweighs space and BOM cost constraints. |
Compared with MXD1817XR22+, MAX809TR22+T saves ~2.4µA supply current but forces redesign of reset net termination, while TPS3808G12DBVR adds configurability at the cost of larger footprint and higher component count - making MXD1817XR22+ optimal for fixed-timing, space-limited, active-high reset applications.
Availability
MXD1817XR22+ is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, smart energy meters, and automotive infotainment modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MXD1817XR22+ 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, computing, and communications markets, emphasizing reliability, low power, and integration.
The MXD1817XR22+ belongs to the MXD1810–MXD1818 family of microprocessor reset supervisors - engineered specifically for cost-sensitive, space-constrained embedded systems needing guaranteed power-on and brownout reset with minimal external components.
FAQ
What is the reset output polarity and drive type of MXD1817XR22+?
MXD1817XR22+ features an active-high push-pull RESET output. When VCC drops below 2.18V, RESET goes high and remains high for ≥100ms after VCC rises above threshold. This eliminates need for external pullup resistors and directly interfaces with µPs requiring active-high reset assertion. The output sources ≥350µA when high and sinks ≥10mA when low, per datasheet specifications.
Does MXD1817XR22+ support manual reset via external pushbutton?
No, MXD1817XR22+ does not include manual reset functionality. Only MXD1813/MXD1818 variants in the family feature debounced pushbutton detect on the RESET pin. MXD1817XR22+ is a dedicated power-supply monitor with no external reset initiation capability - its RESET output responds solely to VCC voltage transitions.
What is the minimum VCC voltage at which MXD1817XR22+ guarantees valid RESET logic levels?
MXD1817XR22+ guarantees correct RESET/RESET logic states down to VCC = +1.0V across the full -40°C to +105°C temperature range. This ensures deterministic reset behavior during deep brownout conditions where other supervisors may fail, making it suitable for battery-backed or ultra-low-voltage systems.
Is MXD1817XR22+ compatible with 2.5V, 3.0V, and 3.3V systems?
Yes, MXD1817XR22+ is explicitly designed for +2.5V, +3.0V, and +3.3V digital systems. Its 2.18V reset threshold provides appropriate hysteresis margin for these rails - e.g., detecting brownout on a nominal 2.5V supply before critical logic levels are violated. It is not intended for +5V systems, which use higher-threshold variants like MXD1810–MXD1813.
What package type and dimensions does MXD1817XR22+ use?
MXD1817XR22+ is supplied in a 3-pin SC70 package (outline X3-2), measuring 2.0mm × 1.25mm with 0.9mm maximum height. This ultra-compact footprint matches industry-standard SC70 land patterns (Maxim land pattern no. 90-0208) and enables high-density PCB layouts in portable and miniaturized electronics.
MXD1817XR22+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.18V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MXD1817XR22+ FAQ
1.How can I place an order for MXD1817XR22+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MXD1817XR22+ 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 MXD1817XR22+ reliable?
The price and inventory of MXD1817XR22+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXD1817XR22+ is usually 5 days.
3.What payment methods are accepted for MXD1817XR22+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXD1817XR22+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXD1817XR22+?
MXD1817XR22+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXD1817XR22+ 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 MXD1817XR22+?
For technical support, including MXD1817XR22+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXD1817XR22+ requirements.
6.How does Aetrix verify that MXD1817XR22+ is sourced from the original manufacturer or authorized distributors?
All MXD1817XR22+ 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 MXD1817XR22+ meets industry standards.
7.What is the process for return or replacement of MXD1817XR22+?
All MXD1817XR22+ units undergo pre-shipment inspection (PSI). If there is an issue with MXD1817XR22+, 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 MXD1817XR22+ part is unused and in its original packaging.
Return procedure for MXD1817XR22+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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MIC826SYMT-TR
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