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Analog Devices Inc./Maxim Integrated MAX700CPA+
- Part No.:
- MAX700CPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX700CPA+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:585
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Product details
Overview
MAX700CPA+ from Maxim Integrated is a precision power-supply supervisory circuit for +5V microprocessor systems, featuring factory-trimmed 4.65V reset threshold, adjustable voltage detection via SENSE input (1.29V reference), and user-configurable hysteresis. It guarantees valid RESET output down to VCC = 1V and delivers ≥200ms reset pulse width during power-up, power-down, and brownout conditions. Used in embedded controllers and intelligent instruments for reliable system initialization.
For engineers reviewing the MAX700CPA+ datasheet, MAX700CPA+ pinout, MAX700CPA+ application, or MAX700CPA+ equivalent, key selection criteria include its dual-mode monitoring (VCC or external SENSE), manual-reset debouncing, ±30mV internal hysteresis, and compatibility with commercial-temperature (0°C to +70°C) 8-pin PDIP layouts.
Technical Context
The MAX700CPA+ implements a precision bandgap-referenced comparator architecture with selectable monitoring modes: internal VCC sensing (CTL = GND) or external voltage sensing via SENSE pin (CTL = VCC). Its 1.29V internal reference enables programmable thresholds using resistor dividers, while HYST pin allows external hysteresis control to suppress noise-induced false resets.
It integrates a debounced MR input with 5µA internal pullup, dual active-low RESET outputs (RESET and RESET), and guaranteed operation across VCC = 1V–15.5V. The device requires no external timing components and maintains valid reset state down to 1V supply, supporting robust power sequencing in µP-based industrial and instrumentation systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.65V ±150mV (factory-trimmed for +5V systems; ensures reliable reset assertion before µP malfunction) |
| SENSE Input Threshold | 1.29V ±40mV (enables external voltage monitoring with resistor-divider scaling) |
| Reset Pulse Width | 200–500ms (guarantees sufficient duration for full µP initialization and peripheral settling) |
| Supply Current | 100–200µA (ultra-low quiescent draw supports battery-backed or low-power standby modes) |
| VCC Operating Range | +1V to +15.5V (supports operation during deep brownout and compatibility with wide-input systems) |
| Internal Hysteresis | 30mV (reduces chatter on threshold crossing; configurable higher via HYST pin) |
| MR Input Threshold | 0.7V (TTL-compatible manual reset activation level) |
Pinout & Package
MAX700CPA+ is supplied in an 8-pin plastic dual-inline package (PDIP), RoHS-compliant with lead-free finish (indicated by '+' suffix). Pin spacing is 0.300", body width 0.355", and standard DIP footprint compatible with through-hole assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 MR | Manual Reset Input | Active-low, internally pulled up with 5µA; debounced to reject switch bounce |
| 2 SENSE | Voltage Sense Input | 1.29V reference input for external threshold setting when CTL = VCC |
| 3 HYST | Hysteresis Control | Connects to GND via resistor to add programmable hysteresis; 1kΩ typical on-resistance |
| 4 GND | Ground Reference | Primary return path for all analog and digital circuitry |
| 5 RESET | Active-Low Reset Output | Open-drain, sinks 3.2mA at VCC = 5V; logic-low during fault or reset condition |
| 6 RESET | Inverted Reset Output | Push-pull, complements RESET; high during reset assertion |
| 7 CTL | Control Mode Select | Low = monitor VCC; high = monitor SENSE; selects internal sensing path |
| 8 VCC | Power Supply Input | +1V to +15.5V operating range; also serves as +5V reference source when CTL = GND |
Key Features
| Feature | Design Value |
|---|---|
| Dual Monitoring Mode | Selectable VCC or external SENSE input via CTL pin-enables flexible voltage supervision without redesign |
| Adjustable Threshold & Hysteresis | SENSE input referenced to 1.29V ±40mV; HYST pin allows precise noise immunity tuning |
| Guaranteed Low-Voltage Operation | Valid RESET output asserted down to VCC = 1V-ensures fail-safe behavior during severe brownouts |
| No External Components Required | Factory-trimmed 4.65V threshold and integrated timing eliminate capacitors, resistors, or trimming |
Applications
| Industrial Controllers | Intelligent Test Instruments |
|---|---|
Use Scenario: PLC I/O modules requiring deterministic reset after AC line sag or backup battery switchover. IC Role / Device Role / Timing Role: Power-supply monitor asserting synchronous reset to ARM Cortex-M4 MCU and isolated CAN transceivers. Use Value: 200ms minimum reset pulse prevents partial register initialization; 1V valid-reset floor avoids spurious release during 3.3V rail collapse. | Use Scenario: Bench multimeters with auto-ranging ADCs and EEPROM calibration storage. IC Role / Device Role / Timing Role: Supervisor ensuring clean power-on reset before EEPROM write-enable and ADC self-calibration sequence. Use Value: Debounced MR input enables front-panel hard-reset without firmware intervention; SENSE mode monitors 2.5V reference rail independently of main 5V supply. |
| Embedded Computing Platforms | Critical µP Power Monitoring |
Use Scenario: Fanless edge gateways with wide-input DC-DC converters (5–24V) powering x86 SoC and Wi-Fi module. IC Role / Device Role / Timing Role: Dual-rail supervisor using SENSE to monitor 3.3V core rail while VCC tracks 5V I/O rail. Use Value: Adjustable hysteresis via HYST pin eliminates false resets caused by switching noise on 3.3V rail; CTL pin enables dynamic reconfiguration. | Use Scenario: Medical infusion pump controller where undetected power anomaly could compromise dose accuracy. IC Role / Device Role / Timing Role: Primary reset generator with redundant validation-asserts RESET until VCC stabilizes >4.65V for ≥200ms. Use Value: Factory-trimmed 4.65V threshold ensures compliance with IEC 62304 Class C reset margin; 30mV hysteresis prevents oscillation near trip point. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power-supply monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33DBVR | Fixed 3.3V threshold; no SENSE/HYST pins; 200ms fixed delay; lower quiescent current (1.1µA) | Designed for 3.3V-only systems; lacks dual-mode sensing and adjustable hysteresis | Choose for ultra-low-power 3.3V applications where external threshold scaling is unnecessary |
| ADM6710ARTZ-REEL7 | 4.63V threshold; no manual reset; no SENSE input; 240ms min reset pulse; higher VCC max (6.5V) | Single-function reset IC; no configurability; optimized for space-constrained PCBs | Choose when board area is critical and only basic VCC monitoring is required |
Compared with TPS3808G33DBVR and ADM6710ARTZ-REEL7, the MAX700CPA+ uniquely supports both fixed +5V supervision and externally scaled voltage monitoring with user-adjustable hysteresis-making it suitable for multi-rail systems requiring design flexibility and noise resilience without added components.
Availability
MAX700CPA+ is available at Aetrix Electronics and suitable for industrial controllers, intelligent test instruments, and embedded computing platforms requiring stable component supply, long-term lifecycle support, and RoHS-compliant through-hole packaging.
Supply support for MAX700CPA+ 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 U.S.-based semiconductor company specializing in analog and mixed-signal ICs for power management, interface, sensing, and reliability-critical applications.
The MAX700 series belongs to Maxim's supervisory IC product line, designed specifically for robust, low-component-count power monitoring in microprocessor-based systems operating across commercial temperature ranges.
FAQ
What is the reset threshold voltage of the MAX700CPA+?
The MAX700CPA+ has a factory-trimmed reset threshold of 4.65V ±150mV for VCC monitoring (when CTL = GND). When configured for external sensing (CTL = VCC), the SENSE input uses a precise 1.29V ±40mV internal reference, enabling custom thresholds via resistor dividers. This dual-threshold capability makes the MAX700CPA+ adaptable to both standard +5V systems and specialized voltage-monitoring requirements.
Does the MAX700CPA+ support manual reset functionality?
Yes, the MAX700CPA+ includes a debounced manual-reset input (MR pin) with an internal 5µA pullup current. A logic-low signal on MR asserts both RESET and RESET outputs for ≥200ms, independent of VCC level. This feature enables hardware-initiated system recovery without processor involvement-critical for field-serviceable equipment and safety-critical embedded systems using the MAX700CPA+.
Can the MAX700CPA+ monitor voltages other than +5V?
Yes, the MAX700CPA+ supports adjustable voltage detection via its SENSE pin when CTL is tied to VCC. Using the internal 1.29V reference, external resistor dividers allow monitoring of any voltage from ~2.5V to 15V. For example, a 10kΩ/3.32kΩ divider scales a 5V rail to 1.29V at SENSE. This capability extends the utility of the MAX700CPA+ beyond +5V systems to multi-rail designs and legacy 3.3V or 12V applications.
What is the purpose of the HYST pin on the MAX700CPA+?
The HYST pin on the MAX700CPA+ provides user-adjustable hysteresis to prevent noise-induced false resets when the monitored voltage hovers near the threshold. When enabled (CTL = VCC), HYST connects to GND through an internal ~1kΩ switch; adding an external resistor between HYST and GND sets hysteresis width. This function is absent in MAX701CPA+ and MAX702CPA+, making HYST a distinguishing feature of the MAX700CPA+ for electrically noisy environments.
Is the MAX700CPA+ pin-compatible with other devices in the MAX700/MAX701/MAX702 family?
Yes, the MAX700CPA+ shares identical 8-pin PDIP pinout and footprint with MAX701CPA+ and MAX702CPA+, including matching RESET, RESET, MR, GND, VCC, and NC placements. However, functional differences exist: MAX700CPA+ includes SENSE, HYST, and CTL pins (used), whereas MAX701CPA+ repurposes pins 2/3/7 as NC, and MAX702CPA+ uses pins 2/3/6/7 as NC. Thus, while physically interchangeable, electrical compatibility requires schematic review before substitution.
MAX700CPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX700CPA+ FAQ
1.How can I place an order for MAX700CPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX700CPA+ 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 MAX700CPA+ reliable?
The price and inventory of MAX700CPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX700CPA+ is usually 5 days.
3.What payment methods are accepted for MAX700CPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX700CPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX700CPA+?
MAX700CPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX700CPA+ 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 MAX700CPA+?
For technical support, including MAX700CPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX700CPA+ requirements.
6.How does Aetrix verify that MAX700CPA+ is sourced from the original manufacturer or authorized distributors?
All MAX700CPA+ 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 MAX700CPA+ meets industry standards.
7.What is the process for return or replacement of MAX700CPA+?
All MAX700CPA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX700CPA+, 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 MAX700CPA+ part is unused and in its original packaging.
Return procedure for MAX700CPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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