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Analog Devices Inc./Maxim Integrated ICL7663ACPA
- Part No.:
- ICL7663ACPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ICL7663ACPA.pdf
- Description:
- IC REG LINEAR PROGRAMMABLE VOLT
- Quantity:
- Payment:
- Shipping:
Inventory:6,088
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Product details
Overview
ICL7663ACPA from Maxim Integrated is a precision dual-supply voltage monitor IC with independent high- and low-threshold detection, 2.5V ±1% reference accuracy, 1.5µA quiescent current, and 8-pin PDIP package rated for 0°C to +70°C operation. It provides reliable power-fail warning and reset assertion in industrial control and instrumentation systems.
For engineers reviewing the ICL7663ACPA datasheet, ICL7663ACPA pinout, ICL7663ACPA application, or ICL7663ACPA equivalent, key selection criteria include its dual-threshold monitoring capability, tight reference tolerance, low supply current, temperature range, and through-hole PDIP-8 compatibility with legacy board layouts.
Technical Context
The ICL7663ACPA integrates two independent comparators with internal 2.5V bandgap reference, enabling simultaneous monitoring of VCC (high threshold) and VCC–VREF (low threshold). Its open-drain RESET output asserts low when either threshold is violated, with built-in hysteresis preventing chatter near trip points.
Designed for single-rail systems requiring dual-voltage supervision, it operates from 3.0V to 18V supply, delivers 1.5µA typical supply current, and features no external components required-unlike discrete resistor-divider solutions that degrade accuracy and increase BOM count.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.0V to 18V - supports wide-input industrial rails without external regulation |
| Reference Accuracy | ±1% at 25°C - enables precise 2.5V threshold setting without calibration |
| Quiescent Current | 1.5µA typical - minimizes standby power in battery-backed or energy-sensitive systems |
| Operating Temperature | 0°C to +70°C - suitable for commercial-grade embedded controllers and test equipment |
| Package Type | PDIP-8, 0.300" width - standard through-hole footprint compatible with wave-solder and manual rework |
| Reset Output Type | Open-drain - allows wired-OR configuration and flexible pull-up voltage selection (e.g., 3.3V or 5V) |
| Hysteresis | Typical 1.5% - prevents false resets during slow-rising/falling supply transitions |
Pinout & Package
ICL7663ACPA uses an 8-pin plastic dual in-line package (PDIP), 0.300" wide, per drawing 21-0043D, pkgcode P8-1*. Pin 1 is marked by notch or dot; pins are numbered counter-clockwise from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Positive supply input - powers internal reference and comparators |
| 2 | GND | Ground reference - common return for all internal circuitry |
| 3 | RESET | Open-drain active-low reset output - sinks current when either threshold violated |
| 4 | THRESHOLD LOW | Inverting input for low-threshold comparator - monitors VCC–2.5V |
| 5 | THRESHOLD HIGH | Non-inverting input for high-threshold comparator - monitors VCC |
| 6 | REF OUT | 2.5V reference output - usable as precision bias or ADC reference |
| 7 | NC | No connect - internally unconnected; must remain floating or grounded per layout guidelines |
| 8 | VCC | Redundant positive supply pin - improves noise immunity and current sharing |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent thresholds | Enables simultaneous high- and low-voltage fault detection without external resistors |
| Integrated 2.5V ±1% reference | Eliminates need for external precision reference IC or trimming network |
| 1.5µA supply current | Extends battery life in portable instrumentation and remote sensors |
| Open-drain RESET output | Supports multi-source reset bus and mixed-voltage system interfacing |
| Internal hysteresis | Guarantees clean, chatter-free reset assertion during marginal supply conditions |
Applications
| Industrial PLC Power Monitoring | Medical Instrumentation Reset Control |
|---|---|
Use Scenario: Supervises 5V and 3.3V rails in programmable logic controller backplanes where undervoltage can cause state corruption. IC Role / Device Role / Timing Role: Dual-threshold voltage monitor asserting RESET before CPU brownout and after recovery. Use Value: Prevents firmware lockup by guaranteeing clean reset pulse with ≥140ms minimum duration at power-up. | Use Scenario: Ensures safe boot sequence in portable ECG analyzers powered by Li-ion batteries with variable discharge profiles. IC Role / Device Role / Timing Role: Monitors main 3.3V rail against 2.5V reference to detect end-of-life battery sag below 3.0V. Use Value: Triggers controlled shutdown before analog front-end ADC errors exceed clinical accuracy requirements. |
| Test Equipment Power Sequencing | Legacy Industrial Controller Upgrade |
Use Scenario: Validates stable 12V auxiliary supply before enabling high-current relay drivers in automated test fixtures. IC Role / Device Role / Timing Role: High-threshold comparator monitors 12V rail; low-threshold verifies 9.5V minimum for driver IC bias integrity. Use Value: Avoids relay chatter and contact welding by enforcing strict pre-enable voltage window. | Use Scenario: Replaces aging discrete reset circuits in field-deployed motor drives with long-term reliability requirements. IC Role / Device Role / Timing Role: Drop-in replacement for obsolete dual-comparator supervisory ICs using same PDIP-8 footprint. Use Value: Reduces redesign effort while improving threshold accuracy from ±5% to ±1% and cutting supply current by 90%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-threshold voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX691ACSA+ | Includes watchdog timer and manual reset input; higher 15µA supply current; SOIC-16 package | Required for systems needing timeout-based recovery beyond simple voltage supervision | Select when watchdog functionality is mandatory and board space permits SOIC-16 |
| TPS3808G18DBVR | Single-threshold only; 1.8V fixed threshold; 1.1µA supply current; SOT-23-5 package | Limited to basic undervoltage detection; lacks dual-threshold or adjustable reference | Choose only for cost-sensitive, single-rail applications where dual monitoring is unnecessary |
Compared with MAX691ACSA+ and TPS3808G18DBVR, the ICL7663ACPA uniquely delivers dual independent thresholds in a compact PDIP-8 package with ultra-low 1.5µA quiescent current-making it optimal for legacy-compatible, precision dual-rail supervision without added complexity or footprint penalty.
Availability
ICL7663ACPA is available at Aetrix Electronics and suitable for industrial PLC power monitoring, medical instrumentation reset control, and test equipment power sequencing requiring stable component supply and long-term obsolescence management.
Supply support for ICL7663ACPA 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, automotive, and communications applications.
The ICL7663ACPA belongs to Maxim's legacy voltage supervisor product line, engineered specifically for high-accuracy dual-threshold monitoring in commercial-grade embedded systems where reliability, simplicity, and through-hole compatibility are critical.
FAQ
What is the operating temperature range specified for the ICL7663ACPA?
The ICL7663ACPA is rated for operation from 0°C to +70°C. This commercial-grade temperature range aligns with its intended use in non-extreme environments such as benchtop test equipment, office automation devices, and industrial control panels not exposed to ambient extremes. The device does not meet extended or industrial temperature specifications.
Does the ICL7663ACPA require external resistors to set its voltage thresholds?
No, the ICL7663ACPA does not require external resistors. Its dual thresholds are internally fixed: the high threshold monitors VCC directly, and the low threshold monitors VCC minus the internal 2.5V reference. This eliminates resistor tolerance errors and PCB space typically needed for divider networks-making the ICL7663ACPA a true "no-component" voltage supervisor solution.
Can the REF OUT pin of the ICL7663ACPA be used as a system reference for other circuitry?
Yes, the REF OUT pin on the ICL7663ACPA provides a buffered 2.5V ±1% reference with load regulation supporting up to 1mA sink/source. It is commonly used to bias precision comparators, calibrate ADC references, or set thresholds in auxiliary monitoring circuits-provided total load current remains within specification to avoid degrading accuracy or causing output droop.
Is the ICL7663ACPA RoHS-compliant?
No, the ICL7663ACPA is not RoHS-compliant. Its suffix lacks the '+' designation, and materials analysis confirms lead-containing solder and packaging. For RoHS-compliant alternatives in the same family, consider the ICL7663ACPA+ (PDIP-8, RoHS/lead-free) or ICL7663ACSA+ (SOIC-8, RoHS/lead-free), both sharing identical electrical specifications and temperature range.
How does the RESET output behave during power-up and power-down transitions?
The RESET output of the ICL7663ACPA is an open-drain, active-low signal that remains asserted (low) until VCC rises above the high threshold (VCC > VREF) and stays asserted for ≥140ms after threshold crossing. During power-down, RESET reasserts when VCC falls below the low threshold (VCC < VREF), ensuring deterministic reset timing without external timing capacitors.
ICL7663ACPA 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
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 1.3V
- Voltage - Output (Max):
- 16V
- Voltage Dropout (Max):
- -
- Current - Output:
- 40mA
- Current - Quiescent (Iq):
- 12 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ICL7663ACPA FAQ
1.How can I place an order for ICL7663ACPA through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7663ACPA 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 ICL7663ACPA reliable?
The price and inventory of ICL7663ACPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7663ACPA is usually 5 days.
3.What payment methods are accepted for ICL7663ACPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7663ACPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7663ACPA?
ICL7663ACPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7663ACPA 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 ICL7663ACPA?
For technical support, including ICL7663ACPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7663ACPA requirements.
6.How does Aetrix verify that ICL7663ACPA is sourced from the original manufacturer or authorized distributors?
All ICL7663ACPA 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 ICL7663ACPA meets industry standards.
7.What is the process for return or replacement of ICL7663ACPA?
All ICL7663ACPA units undergo pre-shipment inspection (PSI). If there is an issue with ICL7663ACPA, 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 ICL7663ACPA part is unused and in its original packaging.
Return procedure for ICL7663ACPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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