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Analog Devices Inc./Maxim Integrated MAX698EWE+
- Part No.:
- MAX698EWE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX698EWE+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,501
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Product details
Overview
MAX698EWE+ from Maxim Integrated is an E-grade (–40°C to +85°C), 16-pin wide SO power-on reset and voltage monitor IC with open-drain RESET output, 4.65V nominal reset threshold, 140ms minimum reset pulse width, and no watchdog functionality. It monitors +5V supplies in microprocessor systems and asserts RESET during power-up, power-down, or brownout.
For engineers reviewing the MAX698EWE+ datasheet, MAX698EWE+ pinout, MAX698EWE+ application, or MAX698EWE+ equivalent, this device serves as a precision, single-function reset supervisor for industrial embedded controllers and critical μP power monitoring where watchdog capability is not required and extended temperature operation is essential.
Technical Context
The MAX698EWE+ implements a precision bandgap-based voltage comparator with 40mV hysteresis to detect VCC drops below 4.65V (typical) and generate a clean, minimum 140ms active-low RESET pulse. Its internal timing circuit ensures reliable deassertion only after stable supply conditions are met.
Unlike the MAX699 variant, the MAX698EWE+ lacks WDI and WDO pins and associated watchdog logic - it provides only power-fail detection and reset generation. All functions operate from a single +5V supply within 3.0V to 5.5V operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage Range | 3.0V to 5.5V - supports nominal +5V rails with ±0.5V tolerance and brownout margin |
| Reset Threshold | 4.65V (typ) - triggers RESET when VCC falls below this level, ensuring stable μP operation |
| Hysteresis | 40mV - prevents oscillation near threshold during slow supply ramps or noise |
| Reset Pulse Width | 140ms (min) - guarantees sufficient hold time for full microprocessor initialization |
| Supply Current | 5mA (max) - enables low-power system monitoring without burdening supply |
| Output Type | Open-drain RESET - allows wired-OR configuration and flexible pull-up voltage selection |
| Temperature Range | –40°C to +85°C - qualified for industrial and extended-environment applications |
Pinout & Package
MAX698EWE+ is housed in a 16-pin wide SO (0.3in) package with 0.050" pitch, RoHS-compliant lead-free finish (indicated by '+' suffix). Pin 1 is top-left corner, with standard SO orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9 | GND | Chip power ground reference for all internal comparators and outputs |
| 2, 3 | VCC | +5V supply input and monitored rail - dual VCC pins reduce trace inductance |
| 5–8, 10–14 | N.C. | No internal connection - must remain unconnected on PCB |
| 15 | RESET | Active-low open-drain reset output - asserted low during brownout/power-down |
| 16 | RESET | Active-high reset output - complementary to pin 15, available only in SO package |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage monitoring | 4.65V threshold with 40mV hysteresis ensures accurate, noise-immune brownout detection |
| Guaranteed reset pulse width | Minimum 140ms pulse holds μP in reset long enough for full clock stabilization and memory initialization |
| Zero external components | Self-contained timing and sensing eliminates capacitors, resistors, or trimming - reduces BOM and layout area |
| Dual RESET outputs | Both active-low (pin 15) and active-high (pin 16) outputs enable direct interface to diverse logic families without inverters |
Applications
| Industrial PLC Controllers | Medical Diagnostic Instruments |
|---|---|
Use Scenario: Power sequencing and fault recovery in programmable logic controllers operating in factory-floor environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Primary power-fail detector and reset generator ensuring deterministic μP restart after line sags or interruptions. Use Value: Prevents corrupted firmware execution by enforcing minimum 140ms reset hold time during unstable supply conditions. | Use Scenario: Reliable boot supervision in portable ultrasound or patient monitor units requiring fail-safe startup under battery-backed +5V rails. IC Role / Device Role / Timing Role: Voltage supervisor that asserts RESET until VCC stabilizes above 4.65V, blocking unsafe initialization. Use Value: Eliminates need for discrete RC networks while meeting IEC 60601-1 power integrity requirements. |
| Telecom Line Cards | Energy Metering Modules |
Use Scenario: Hot-swap power monitoring on carrier-grade line cards where transient surges and cold starts demand robust reset behavior. IC Role / Device Role / Timing Role: Single-chip reset controller interfacing directly with FPGA or ARM-based management processors. Use Value: Dual RESET outputs simplify integration with both 3.3V and 5V logic domains on same board. | Use Scenario: Tamper-resistant metering platforms operating continuously in outdoor utility cabinets with wide thermal cycling. IC Role / Device Role / Timing Role: Industrial-grade reset supervisor ensuring valid firmware load before metrology engine activation. Use Value: –40°C to +85°C qualification guarantees operation across global deployment zones without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power-on reset and voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX698CPA+ | Same core function but C-grade (0°C to +70°C); 8-pin PDIP package; no RESET high output | Suitable for commercial-temperature consumer or lab equipment; lacks dual RESET outputs and extended temp range | Select MAX698CPA+ only if ambient temperature stays within 0°C–70°C and PCB space allows DIP footprint |
| TPS3808G33DBVR | 3.3V fixed threshold; 200ms min reset pulse; SOT-23-6 package; no active-high output | Designed for 3.3V systems; smaller footprint; requires external pull-up; no complementary RESET signal | Choose TPS3808G33DBVR for compact 3.3V designs where dual outputs and industrial temp are unnecessary |
Compared with MAX698CPA+ and TPS3808G33DBVR, the MAX698EWE+ uniquely delivers industrial temperature range, dual active-low/active-high RESET outputs, and 4.65V threshold in a 16-pin SO - making it optimal for ruggedized +5V μP systems needing guaranteed reset timing and layout flexibility.
Availability
MAX698EWE+ is available at Aetrix Electronics and suitable for industrial PLC controllers, medical diagnostic instruments, telecom line cards, and energy metering modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX698EWE+ 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 reliability-critical applications.
The MAX698EWE+ belongs to Maxim's supervisory IC product line, designed specifically for deterministic power-on reset and brownout protection in industrial and embedded microprocessor systems.
FAQ
What is the reset threshold voltage of the MAX698EWE+?
The MAX698EWE+ has a nominal reset threshold of 4.65V, with a guaranteed range of 4.50V to 4.75V over its full operating temperature range (–40°C to +85°C). This threshold is internally trimmed and does not require external components. The device asserts RESET when VCC falls below this level and maintains the pulse for at least 140ms.
Does the MAX698EWE+ include a watchdog timer function?
No, the MAX698EWE+ does not include a watchdog timer. It is the MAX698 variant - distinct from the MAX699 - and contains only power-on reset and brownout detection circuitry. The watchdog input (WDI) and watchdog output (WDO) pins are absent; only RESET and complementary RESET outputs are present.
What are the key differences between MAX698EWE+ and MAX699EWE+?
The MAX699EWE+ adds a watchdog timer with 1-second timeout and WDI/WDO pins, while the MAX698EWE+ omits these entirely. Both share identical reset threshold, pulse width, and temperature rating. MAX698EWE+ offers dual RESET outputs (pins 15 and 16); MAX699EWE+ replaces pin 16 with WDO and adds WDI on pin 11.
Can the MAX698EWE+ be used with a 3.3V microprocessor system?
The MAX698EWE+ is specified for +5V supply monitoring and has a 4.65V reset threshold - it is not intended for direct use with 3.3V rails. For 3.3V systems, a dedicated 3.3V supervisor such as the TPS3808G33DBVR is recommended. Using MAX698EWE+ on 3.3V would result in immediate, permanent RESET assertion.
What is the purpose of the two RESET outputs on the MAX698EWE+?
The MAX698EWE+ provides both active-low (pin 15) and active-high (pin 16) RESET outputs to simplify interface with mixed-voltage logic families. Pin 15 drives low during fault; pin 16 drives high simultaneously - eliminating need for external inverters when driving 3.3V or 5V devices requiring opposite polarity reset signals.
MAX698EWE+ 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX698EWE+ FAQ
1.How can I place an order for MAX698EWE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX698EWE+ 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 MAX698EWE+ reliable?
The price and inventory of MAX698EWE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX698EWE+ is usually 5 days.
3.What payment methods are accepted for MAX698EWE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX698EWE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX698EWE+?
MAX698EWE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX698EWE+ 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 MAX698EWE+?
For technical support, including MAX698EWE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX698EWE+ requirements.
6.How does Aetrix verify that MAX698EWE+ is sourced from the original manufacturer or authorized distributors?
All MAX698EWE+ 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 MAX698EWE+ meets industry standards.
7.What is the process for return or replacement of MAX698EWE+?
All MAX698EWE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX698EWE+, 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 MAX698EWE+ part is unused and in its original packaging.
Return procedure for MAX698EWE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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