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Analog Devices Inc./Maxim Integrated MAX698CWE+
- Part No.:
- MAX698CWE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX698CWE+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,376
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Product details
Overview
MAX698CWE+ from Maxim Integrated is a low-cost, single-supply +5V power-on reset and brownout monitor IC with open-drain RESET output, 4.65V threshold, 140ms minimum reset pulse width, and no external components required-used in microprocessor-based controllers for reliable power sequencing.
For engineers reviewing the MAX698CWE+ datasheet, MAX698CWE+ pinout, MAX698CWE+ application, or MAX698CWE+ equivalent, this page delivers verified package mapping (16-pin wide SO), confirmed reset timing, voltage threshold hysteresis, watchdog absence, and direct comparison to MAX699CWE+ and MAX698CPA.
Technical Context
The MAX698CWE+ implements a precision bandgap-based voltage monitor with fixed 4.65V power-up reset assertion threshold and 40mV hysteresis to prevent chatter during brownout recovery. It generates a guaranteed 140ms–500ms active-low open-drain RESET pulse on power-up, power-down, or VCC drop below threshold.
No internal watchdog timer is present-unlike the MAX699 variant-and all WDI/WDO pins are No Connect (N.C.) on this part. The device operates across 3.0V–5.5V supply range and draws only 5mA typical supply current at +5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.65V nominal; asserts RESET when VCC falls below this level-ensures μP remains held in reset until stable +5V is established. |
| Hysteresis | 40mV; prevents oscillation during slow VCC ramp-up or brownout recovery by requiring ~4.75V to deassert reset. |
| Reset Pulse Width | 140–500ms; guarantees sufficient hold time for full μP initialization and peripheral stabilization before release. |
| Supply Voltage Range | 3.0V to 5.5V; supports operation across industrial-grade +5V rails with margin for ripple and tolerance. |
| Output Type | Open-drain RESET; allows wired-OR configuration, level shifting, and pull-up to any logic rail up to 5.5V. |
| Operating Temp | 0°C to +70°C (C grade); validated for commercial temperature environments in embedded controllers and instrumentation. |
| Supply Current | 5mA typical; enables low-power system monitoring without burdening the main +5V rail. |
Pinout & Package
MAX698CWE+ is housed in a 16-pin, 0.3-inch wide SO (small outline) package per outline 21-0042, RoHS-compliant with lead-free finish (indicated by '+' suffix). Pin 1 is top-left corner, index mark at Pin 1 end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9 | GND | Chip power ground reference-must be connected to system ground plane for accurate voltage sensing. |
| 2, 3 | VCC | +5V supply input and sense node-connects directly to monitored +5V rail; dual pins reduce trace resistance. |
| 5–8, 10–14 | N.C. | No internal connection-left unconnected; no routing or termination required on PCB. |
| 15 | RESET | Active-low open-drain reset output-requires external pull-up; drives μP RESET# input during fault conditions. |
| 16 | RESET | Active-high reset output-complementary to Pin 15; enables direct interface to logic that requires high-true reset. |
Key Features
| Feature | Design Value |
|---|---|
| Precision 4.65V threshold | Guaranteed trip point with 40mV hysteresis ensures deterministic reset behavior across voltage transients and temperature. |
| 140ms minimum reset pulse | Meets μP minimum reset hold-time requirements without external RC timing components. |
| Dual RESET outputs (active-low & active-high) | Eliminates need for external inverters-supports both standard and non-inverting reset logic interfaces. |
| No external components required | Reduces BOM count, board area, and qualification effort-ideal for cost-sensitive, space-constrained designs. |
| 16-pin wide SO package | Provides mechanical robustness and thermal performance superior to 8-pin PDIP, with standardized footprint for automated assembly. |
Applications
| Industrial Controllers | Embedded Instrumentation |
|---|---|
Use Scenario: PLC I/O modules requiring fail-safe power sequencing during AC line fluctuations or battery backup transitions. IC Role / Device Role / Timing Role: Primary power-good monitor generating synchronized reset pulse to halt CPU execution until +5V stabilizes. Use Value: Prevents firmware corruption and register misconfiguration by enforcing 140ms minimum reset hold time independent of supply slew rate. | Use Scenario: Portable digital multimeters and data loggers powered from regulated +5V DC-DC converters. IC Role / Device Role / Timing Role: Single-chip reset supervisor ensuring clean boot after cold start or brownout recovery. Use Value: Dual RESET outputs simplify interface to mixed-logic systems-no level-shifting or inversion needed for MCU or display controller inputs. |
| Computer Peripherals | Critical μP Power Monitoring |
Use Scenario: USB-to-serial adapters and PCIe endpoint cards where host power delivery varies across platforms. IC Role / Device Role / Timing Role: Standalone reset generator tied to local +5V rail-decouples reset timing from upstream host controller. Use Value: 4.65V threshold with 40mV hysteresis rejects noise-induced false resets while guaranteeing reset assertion before μP clock domain becomes unstable. | Use Scenario: Medical diagnostic equipment with safety-critical boot validation requirements. IC Role / Device Role / Timing Role: Certified power-monitoring element in IEC 62304 Class B software lifecycle compliance path. Use Value: Factory-trimmed voltage threshold and guaranteed pulse width eliminate calibration steps and reduce design verification burden. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power-on reset monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX699CWE+ | Includes functional watchdog input (WDI) and watchdog output (WDO); otherwise identical pinout, threshold, and timing. | Required where μP activity must be monitored continuously-not just power state-to detect lockup or firmware hang. | Select MAX699CWE+ only if watchdog supervision is needed; MAX698CWE+ avoids unused WDI/WDO pins and simplifies layout. |
| MAX698CPA | Same functionality and electrical specs, but in 8-pin PDIP package-no RESET (active-high) output; only open-drain RESET available. | Suitable for through-hole prototyping or legacy designs where SO packaging is not feasible. | Choose MAX698CPA for hand-soldered evaluation or low-volume DIP-based systems; MAX698CWE+ preferred for production SMT assembly. |
Compared with MAX699CWE+, MAX698CWE+ removes watchdog circuitry to reduce complexity and cost where continuous μP activity monitoring is unnecessary; compared with MAX698CPA, it adds active-high RESET and leverages SO packaging for higher reliability and smaller footprint.
Availability
MAX698CWE+ is available at Aetrix Electronics and suitable for industrial controllers, embedded instrumentation, and computer peripherals requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for MAX698CWE+ 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 is a semiconductor company specializing in analog and mixed-signal ICs for power management, interface, sensing, and timing applications.
The MAX698/MAX699 product line delivers integrated power-on reset and watchdog supervision for microprocessor systems-designed to replace discrete resistor-capacitor reset networks with factory-calibrated, zero-adjustment solutions.
FAQ
What is the reset threshold voltage of the MAX698CWE+?
The MAX698CWE+ has a nominal reset threshold of 4.65V, with guaranteed assertion when VCC falls below 4.4V and deassertion above 4.75V due to 40mV hysteresis. This ensures stable reset behavior during power-up, brownout, and power-down events without external components. The MAX698CWE+ uses an internal bandgap reference for accuracy across temperature and supply variations.
Does the MAX698CWE+ include a watchdog timer function?
No, the MAX698CWE+ does not include a watchdog timer. Unlike the MAX699CWE+, it lacks WDI (watchdog input) and WDO (watchdog output) functionality. Pins 11 and 14 on the MAX698CWE+ are No Connect (N.C.), and the device provides only power-on/brownout reset supervision. The MAX698CWE+ is optimized for simplicity and cost where continuous μP activity monitoring is not required.
What are the key differences between MAX698CWE+ and MAX698CPA?
The MAX698CWE+ and MAX698CPA share identical reset functionality and electrical specifications, but differ in package and output configuration: MAX698CWE+ uses a 16-pin wide SO package with both active-low and active-high RESET outputs, while MAX698CPA uses an 8-pin PDIP package with only open-drain RESET. The MAX698CWE+ supports surface-mount automation and offers greater interface flexibility.
Can the MAX698CWE+ be used with a 3.3V microprocessor?
Yes, the MAX698CWE+ can supervise a 3.3V system's +5V auxiliary rail or power supply, but its RESET outputs are designed for 5V logic compatibility. Its open-drain RESET pin can be pulled up to 3.3V for direct interface with 3.3V μPs, provided the pull-up voltage does not exceed VCC (5V). The MAX698CWE+ itself requires a +5V supply and does not operate from 3.3V.
What is the minimum reset pulse width guaranteed by the MAX698CWE+?
The MAX698CWE+ guarantees a minimum reset pulse width of 140ms, with typical duration up to 500ms depending on VCC ramp characteristics. This meets or exceeds the reset hold-time requirements of most 8-bit, 16-bit, and 32-bit microprocessors. The pulse width is internally generated and does not depend on external capacitors or resistors-ensuring consistent timing across temperature and unit-to-unit variation.
MAX698CWE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.65V
- Output:
- Open Drain, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX698CWE+ FAQ
1.How can I place an order for MAX698CWE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX698CWE+ 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 MAX698CWE+ reliable?
The price and inventory of MAX698CWE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX698CWE+ is usually 5 days.
3.What payment methods are accepted for MAX698CWE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX698CWE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX698CWE+?
MAX698CWE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX698CWE+ 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 MAX698CWE+?
For technical support, including MAX698CWE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX698CWE+ requirements.
6.How does Aetrix verify that MAX698CWE+ is sourced from the original manufacturer or authorized distributors?
All MAX698CWE+ 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 MAX698CWE+ meets industry standards.
7.What is the process for return or replacement of MAX698CWE+?
All MAX698CWE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX698CWE+, 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 MAX698CWE+ part is unused and in its original packaging.
Return procedure for MAX698CWE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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