Maxim Integrated Manufacturer Skill

Maxim Integrated Manufacturer Skill

MPN Structure

Maxim MPNs follow this general structure:

[PREFIX][SERIES][GRADE][TEMP][PACKAGE][PINS][ROHS]
   |       |       |      |      |      |     |
   |       |       |      |      |      |     +-- +/​- for RoHS status
   |       |       |      |      |      +-- Pin count designator
   |       |       |      |      +-- Package type letter
   |       |       |      +-- Temperature range code
   |       |       +-- Optional grade (A, B, C for accuracy/​specs)
   |       +-- Series number (e.g., 232, 485, 6675)
   +-- Family prefix (MAX, DS, ICL, DG)

Example Decoding

MAX232CPE+
|  |  |||+-- + = RoHS compliant
|  |  ||+-- E = 16 pins
|  |  |+-- P = Plastic DIP package
|  |  +-- C = Commercial temp (0 to +70C)
|  +-- 232 = RS-232 driver/​receiver
+-- MAX = Maxim prefix

DS18B20+
|  |   |+-- + = RoHS compliant
|  |   +-- (no package code = TO-92 default)
|  +-- 18B20 = Digital temperature sensor series
+-- DS = Dallas Semiconductor prefix

MAX6675ISA+
|  |   |||+-- + = RoHS compliant
|  |   ||+-- A = 8 pins
|  |   |+-- S = SOIC package
|  |   +-- I = Industrial temp (-40 to +85C)
|  +-- 6675 = K-type thermocouple-to-digital converter
+-- MAX = Maxim prefix

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Temperature Range Codes

Note: Temperature code is the FIRST letter of the suffix in Maxim's system.

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Package Type Codes (Second Letter)

Through-Hole Packages

Surface Mount - Standard

Surface Mount - Small Form Factor

Surface Mount - Power/​Thermal

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Pin Count Codes (Third Letter)

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RoHS/​Lead-Free Status

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Common Prefixes and Product Categories

MAX Prefix (Maxim Original)

DS Prefix (Dallas Semiconductor)

ICL Prefix (Intersil Legacy)

DG Prefix (Data Gate)

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DS18B20 Special Suffixes

The DS18B20 family uses simplified package codes:

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Common Series Reference

Interface ICs

Temperature Sensors

Real-Time Clocks

Power Management

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Handler Implementation Notes

Current Issues in MaximHandler

1. HashSet Usage: Uses new HashSet<>() instead of immutable Set.of():

   // CURRENT (problematic)
   Set<ComponentType> types = new HashSet<>();
   types.add(...);
   
   // RECOMMENDED
   return Set.of(
       ComponentType.INTERFACE_IC_MAXIM,
       ComponentType.VOLTAGE_REGULATOR_MAXIM,
       ...
   );
   

2. Missing Pattern Coverage: Many product families lack patterns:

   • MAX232/​MAX485 interface ICs (only generic IC patterns)
   • MAX6675 thermocouple converters
   • MAX17xxx power management
   • MAX4xxx analog switches

3. Incomplete Package Extraction: Only handles DS18B20 specifically:

   // Current implementation only handles DS18B20
   if (mpn.startsWith("DS18")) {
       if (mpn.endsWith("Z")) return "TO-92";
       // etc.
   }
   

4. Limited Series Extraction: Only extracts DS18B20 and MAX6xxx series.

Recommended Pattern Additions

// Interface ICs
registry.addPattern(ComponentType.INTERFACE_IC_MAXIM, "^MAX[234]8[0-9][A-Z0-9]*$");

// Thermocouple converters
registry.addPattern(ComponentType.TEMPERATURE_SENSOR_MAXIM, "^MAX66[0-9]{2}[A-Z0-9-]*$");

// RTCs
registry.addPattern(ComponentType.RTC_MAXIM, "^DS1[23][0-9]{2}[A-Z0-9]*$");
registry.addPattern(ComponentType.RTC_MAXIM, "^DS3[0-9]{3}[A-Z0-9]*$");

// Power management
registry.addPattern(ComponentType.BATTERY_MANAGEMENT_MAXIM, "^MAX17[0-9]{3}[A-Z0-9-]*$");

// Analog switches
registry.addPattern(ComponentType.IC, "^MAX4[0-9]{3}[A-Z0-9-]*$");
registry.addPattern(ComponentType.IC, "^DG4[0-9]{2}[A-Z0-9-]*$");

Package Code Extraction

// Maxim package codes follow TEMP+PACKAGE+PINS format
// Example: MAX232CPE+ -> C=temp, P=PDIP, E=16-pin

// Extract package from 3-letter suffix
String suffix = extractSuffix(mpn);  // e.g., "CPE"
if (suffix.length() >= 2) {
    char packageCode = suffix.charAt(1);  // Second char is package
    switch (packageCode) {
        case 'P': case 'N': return "PDIP";
        case 'S': return "SOIC (narrow)";
        case 'A': case 'W': return "SOIC (wide)";
        case 'E': return "QSOP";
        case 'U': return "TSSOP";
        case 'T': return "SOT-23";
        // etc.
    }
}

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Related Files

• Handler: manufacturers/​MaximHandler.java
• Component types: INTERFACE_IC_MAXIM, VOLTAGE_REGULATOR_MAXIM, RTC_MAXIM, TEMPERATURE_SENSOR_MAXIM, BATTERY_MANAGEMENT_MAXIM, MEMORY_MAXIM
• Manufacturer entry: ComponentManufacturer.MAXIM with regex (?:MAX|DS|ICL|DG|UP|LT|LTC|LTM)

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Learnings & Edge Cases

• Dallas Semiconductor: Acquired by Maxim in 2001; DS-prefix parts are Maxim products
• Analog Devices acquisition: Maxim was acquired by ADI in 2021; parts still use Maxim naming
• MAX232 vs MAX232A: The "A" suffix indicates improved specs (faster slew rate, smaller caps)
• ESD-protected variants: MAX485E has enhanced ESD protection vs standard MAX485
• Temperature code position: In Maxim's 3/​4-letter suffix, temperature is FIRST letter
• DS18B20 authenticity: Counterfeit DS18B20 sensors are common; genuine parts have laser-etched markings
• LT/​LTC/​LTM prefixes: These are Linear Technology products (also owned by ADI), but registered in Maxim handler

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