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

---

Temperature Range Codes

Code	Range	Application
C	0C to +70C	Commercial
I	-20C to +85C	Industrial (older)
E	-40C to +85C	Extended Industrial
A	-40C to +85C	Aerospace
M	-55C to +125C	Military

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

---

Package Type Codes (Second Letter)

Through-Hole Packages

Code	Package	Notes
P	PDIP	Plastic DIP
N	PDIP	Plastic DIP (alternate)
J	CERDIP	Ceramic DIP

Surface Mount - Standard

Code	Package	Notes
S	SOIC (narrow)	150mil body
A	SOIC (wide)	208mil or 300mil body
W	SOIC (wide)	300mil body
E	QSOP	Quarter-size SOP
U	TSSOP/TQFN	Thin packages

Surface Mount - Small Form Factor

Code	Package	Notes
T	SOT-23	Small outline transistor
X	SC70	Ultra-small
K	micro-MAX	Micro footprint

Surface Mount - Power/Thermal

Code	Package	Notes
F	TDFN	Thin dual flat no-lead
L	QFN	Quad flat no-lead
B	WLP	Wafer-level package
G	BGA	Ball grid array

---

Pin Count Codes (Third Letter)

Code	Pin Count
A	8
B	10
C	12
D	14
E	16
G	24
H	28
I	28 (alternate)
P	20

---

RoHS/Lead-Free Status

Suffix	Meaning
+	Lead-free, RoHS compliant
-	Not RoHS qualified (leaded)
#	RoHS compliant with exemption (e.g., high-lead solder)
(none)	Pre-RoHS part number, leaded

---

Common Prefixes and Product Categories

MAX Prefix (Maxim Original)

Series	Category	Examples
MAX232	RS-232 interface	MAX232, MAX232A, MAX3232
MAX485	RS-485 interface	MAX485, MAX485E, MAX487
MAX6xxx	Temperature sensors	MAX6675 (thermocouple), MAX6633
MAX11xxx	ADCs	MAX11100, MAX11200
MAX12xxx	DACs	MAX12555, MAX12900
MAX17xxx	Power management	MAX17043 (fuel gauge), MAX17135
MAX19xxx	Amplifiers	MAX19711, MAX19792
MAX4xxx	Analog switches	MAX4051, MAX4066, MAX4617

DS Prefix (Dallas Semiconductor)

Series	Category	Examples
DS18xxx	Temperature sensors	DS18B20, DS18S20
DS12xxx	Real-time clocks	DS1232, DS12885, DS12C887
DS13xxx	Real-time clocks	DS1302, DS1307, DS3231
DS28xxx	EEPROM/Authentication	DS28E05, DS2890

ICL Prefix (Intersil Legacy)

Series	Category	Examples
ICL7xxx	ADC/DAC	ICL7106, ICL7135

DG Prefix (Data Gate)

Series	Category	Examples
DG4xxx	Analog switches	DG408, DG411, DG441

---

DS18B20 Special Suffixes

The DS18B20 family uses simplified package codes:

Suffix	Package	Notes
(none) or +	TO-92	Standard through-hole
Z	TO-92	Same as above
U	MSOP-8	Surface mount
PAR	TO-92	Parasitic power mode

---

Common Series Reference

Interface ICs

Series	Type	Equivalent/Related
MAX232	RS-232 driver	MAX232A (faster), MAX3232 (3V)
MAX485	RS-485 transceiver	MAX485E (ESD protected), MAX487
MAX3232	3V RS-232	-
MAX3485	3V RS-485	-

Temperature Sensors

Series	Type	Output
DS18B20	1-Wire digital	9-12 bit resolution
DS18S20	1-Wire digital	9-bit resolution
MAX6675	K-thermocouple	SPI, 12-bit
MAX6633	Local/remote sensor	I2C

Real-Time Clocks

Series	Type	Interface
DS1302	RTC with RAM	3-wire serial
DS1307	RTC with RAM	I2C
DS3231	High-precision RTC	I2C, TCXO
DS12887	RTC with battery	Parallel

Power Management

Series	Type	Application
MAX17043	Fuel gauge	Li-Ion battery
MAX17135	PMIC	E-paper displays
MAX17xxx	Battery management	Various

---

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.
    }
}

---

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)

---

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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