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Analog Devices Inc./Maxim Integrated MAX700EPA
- Part No.:
- MAX700EPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX700EPA.pdf
- Description:
- IC SUPERVISOR PWR SUP MON RESET
- Quantity:
- Payment:
- Shipping:
Inventory:1,516
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Product details
Overview
MAX700EPA from Maxim Integrated is a precision power-supply supervisory circuit designed for critical µP power monitoring in industrial embedded systems. It provides factory-trimmed 4.65V reset threshold, guaranteed valid RESET output down to VCC = 1.0V, ≥200ms reset pulse width, debounced manual-reset input (MR), and operates across –40°C to +85°C. It is used to ensure reliable microprocessor startup and brownout recovery in +5V digital systems.
For engineers reviewing the MAX700EPA datasheet, MAX700EPA pinout, MAX700EPA application, or MAX700EPA equivalent, key selection considerations include its dual-output reset capability (RESET/RESET), adjustable-voltage detection via SENSE/CTL pins, programmable hysteresis through HYST, and compatibility with extended-temperature industrial power rails.
Technical Context
The MAX700EPA implements an internal voltage comparator with factory-trimmed 4.65V threshold for VCC monitoring when CTL = GND, and supports external voltage sensing via SENSE input (1.29V reference) when CTL = VCC. Its reset logic guarantees active-low RESET and active-high RESET outputs during power-up, power-down, and low-VCC conditions.
Hysteresis is configurable using the HYST pin (typical on-resistance 1kΩ to GND), enabling noise-immune threshold adjustment. The MR input includes internal 5µA pullup and triggers reset on low assertion, with validated 0.7V threshold and –30µA pulldown current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.65V ±150mV (factory-trimmed for +5V systems; ensures deterministic reset at supply droop) |
| Reset Pulse Width | 200–500ms (guarantees sufficient duration for µP initialization and peripheral stabilization) |
| VCC Valid Reset Range | 1.0V minimum (ensures correct RESET state even during deep brownout or slow power ramp) |
| Supply Current | 100–200µA (ultra-low quiescent draw enables use in battery-backed or always-on monitoring) |
| MR Input Threshold | 0.7V max (enables robust pushbutton interface with standard mechanical switches) |
| Operating Temperature | –40°C to +85°C (validated for industrial control, instrumentation, and harsh-environment deployment) |
| Package | 8-pin PDIP (0.300" width; through-hole mounting compatible with legacy industrial PCBs) |
Pinout & Package
MAX700EPA is supplied in an 8-pin plastic dual-inline package (PDIP) with 0.300" body width and standard through-hole footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 MR | Manual Reset Input | Active-low input with internal 5µA pullup; asserts RESET/RESET when pulled below 0.7V |
| 2 SENSE | External Voltage Sense Input | 1.29V reference comparator input; used with external resistor divider when CTL = VCC |
| 3 HYST | Hysteresis Control Terminal | Connects to GND via external resistor to set hysteresis width; typical on-resistance 1kΩ |
| 4 GND | Ground Reference | Primary return path for all internal comparators, reset drivers, and bias circuits |
| 5 RESET | Active-Low Reset Output | Open-drain output sinking up to 16mA; requires external pullup for logic-level compatibility |
| 6 RESET | Active-High Reset Output | Push-pull output sourcing up to 3.2mA; delivers VCC – 0.4V high-level under load |
| 7 CTL | Control Select Input | Configures monitoring mode: GND → VCC monitoring; VCC → SENSE monitoring |
| 8 VCC | Power Supply Input | +3V to +15.5V tolerant; powers internal circuitry and serves as monitored rail when CTL = GND |
Key Features
| Feature | Design Value |
|---|---|
| Preset & Adjustable Voltage Detection | Supports both fixed 4.65V VCC monitoring and user-defined thresholds via SENSE/CTL configuration |
| Adjustable Hysteresis | HYST pin enables precise noise margin tuning (e.g., 50mV–200mV) without external op-amps |
| Debounced Manual Reset | Internal MR debouncing eliminates need for RC filters or firmware debounce logic |
| Guaranteed Reset Below 1V | Ensures fail-safe reset assertion even during catastrophic supply collapse or cold-start scenarios |
| Dual-Output Reset Logic | Simultaneous active-low (open-drain) and active-high (push-pull) outputs simplify interface to diverse µP families |
Applications
| Industrial PLC Power Monitoring | Medical Instrumentation Power Sequencing |
|---|---|
Use Scenario: Monitoring 5V system rail in programmable logic controllers exposed to wide ambient temperature swings and EMI-rich factory floors. IC Role / Device Role / Timing Role: Primary power-fail detector and reset generator ensuring deterministic µP restart after brownout or transient dropout. Use Value: Guaranteed 200ms reset pulse and –40°C to +85°C operation prevent spurious resets and guarantee compliance with IEC 61000-4 immunity standards. |
Use Scenario: Ensuring safe power-up sequencing and fault-triggered shutdown in portable diagnostic devices with battery + wall-adapter dual supplies. IC Role / Device Role / Timing Role: Supervisory controller coordinating µP boot readiness with analog sensor power stabilization and ADC reference settling. Use Value: Dual RESET/RESET outputs directly drive both processor reset and analog subsystem enable lines without level-shifting or buffering. |
| Telecom Base Station Shelf Management | Automated Test Equipment (ATE) Power Validation |
Use Scenario: Verifying stable 5V auxiliary supply before enabling FPGA configuration and RF front-end biasing in remote radio units. IC Role / Device Role / Timing Role: Independent power-good monitor decoupled from main PMIC, providing redundant reset assurance. Use Value: SENSE/CTL reconfiguration allows monitoring of secondary rails (e.g., 3.3V FPGA core) using same device footprint and BOM. |
Use Scenario: Validating clean 5V supply ramp before initiating calibration routines in benchtop test instruments with high-precision DACs and references. IC Role / Device Role / Timing Role: Precision threshold supervisor rejecting sub-10µs glitches while asserting reset for >200ms to meet NIST traceability timing requirements. Use Value: Factory-trimmed 4.65V threshold and <±150mV tolerance eliminate post-production calibration of reset point. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX701EPA | Same pinout and temperature range; lacks SENSE, HYST, and CTL pins - only monitors VCC at 4.65V | No external voltage sensing or hysteresis adjustment; suitable only for fixed-rail +5V monitoring | Select when design requires only basic VCC supervision without configurability |
| TPS3808G33DBVR | 3.3V fixed threshold; 350ms min reset pulse; no manual reset input; SOT-23-6 package | Designed for low-voltage microcontrollers; incompatible pinout and missing MR/RESET dual output | Select for space-constrained 3.3V systems where manual reset and dual outputs are unnecessary |
Compared with MAX701EPA and TPS3808G33DBVR, the MAX700EPA uniquely supports both VCC and external rail monitoring, field-adjustable hysteresis, and simultaneous active-high/active-low reset signaling - making it the only option among the three for flexible, multi-rail industrial supervision with manual intervention capability.
Availability
MAX700EPA is available at Aetrix Electronics and suitable for industrial PLCs, medical instrumentation, telecom shelf management, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX700EPA 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, mixed-signal, and power-management ICs for industrial, communications, and computing applications.
The MAX700 family was engineered specifically for robust, low-component-count power supervision in mission-critical µP systems - emphasizing reliability over temperature extremes, glitch immunity, and minimal external component dependency.
FAQ
What is the reset threshold voltage of the MAX700EPA?
The MAX700EPA features a factory-trimmed reset threshold of 4.65V with ±150mV tolerance over its full operating temperature range (–40°C to +85°C). This value applies when monitoring VCC directly (CTL = GND). When configured for external sensing (CTL = VCC), the SENSE input uses a 1.29V internal reference, allowing custom thresholds via resistor dividers. The MAX700EPA datasheet specifies this as the nominal power-up threshold under standard test conditions.
Does the MAX700EPA support manual reset functionality?
Yes, the MAX700EPA includes a dedicated MR (Manual Reset) pin (Pin 1) with internal 5µA pullup current. Asserting MR low (below 0.7V) forces both RESET and RESET outputs into their active states regardless of VCC level. The input is debounced internally, eliminating the need for external RC filtering. This feature is fully functional across the –40°C to +85°C range and is documented in the MAX700EPA Electrical Characteristics table.
Can the MAX700EPA monitor voltages other than +5V?
Yes, the MAX700EPA supports adjustable-voltage detection via its SENSE pin (Pin 2) and CTL pin (Pin 7). When CTL is tied to VCC, the internal comparator monitors SENSE instead of VCC, using a precise 1.29V reference. By connecting a resistor divider from the target rail to SENSE, designers can configure detection thresholds from 3V to 15V. This capability is exclusive to the MAX700EPA within the MAX700/MAX701/MAX702 family.
What is the minimum VCC voltage at which the MAX700EPA guarantees correct RESET output state?
The MAX700EPA guarantees correct RESET output logic state down to VCC = 1.0V (with RESET sinking 1mA), as specified in the Absolute Maximum Ratings and Electrical Characteristics sections. This ensures deterministic behavior during deep brownout, slow power ramp-up, or partial supply failure - a key differentiator versus competitors that specify reset validity only above 2.0V or higher. This specification is validated across the full –40°C to +85°C temperature range.
Is the MAX700EPA pin-compatible with the MAX701EPA and MAX702EPA?
No, the MAX700EPA is not pin-compatible with MAX701EPA or MAX702EPA. While all three share the same 8-pin PDIP package and power/ground/reset pin locations (Pins 4, 5, 6, 8, and 1), the MAX700EPA uses Pins 2 (SENSE), 3 (HYST), and 7 (CTL) for configurable monitoring, whereas MAX701EPA assigns Pin 2 to RESET and MAX702EPA leaves Pins 2, 3, 6, and 7 as no-connects. Direct substitution would cause functional failure or damage due to incorrect signal routing.
MAX700EPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Push-Pull, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 200ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX700EPA FAQ
1.How can I place an order for MAX700EPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX700EPA 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 MAX700EPA reliable?
The price and inventory of MAX700EPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX700EPA is usually 5 days.
3.What payment methods are accepted for MAX700EPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX700EPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX700EPA?
MAX700EPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX700EPA 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 MAX700EPA?
For technical support, including MAX700EPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX700EPA requirements.
6.How does Aetrix verify that MAX700EPA is sourced from the original manufacturer or authorized distributors?
All MAX700EPA 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 MAX700EPA meets industry standards.
7.What is the process for return or replacement of MAX700EPA?
All MAX700EPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX700EPA, 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 MAX700EPA part is unused and in its original packaging.
Return procedure for MAX700EPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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