Cantara/ti

Texas Instruments (TI) Manufacturer Skill

MPN Structure

TI MPNs follow this general structure:

[PREFIX][SERIES][VARIANT][PACKAGE][TEMP][QUALIFIER]
   │       │        │        │      │       │
   │       │        │        │      │       └── Optional: R=Tape/Reel, E=Lead-free
   │       │        │        │      └── Temperature: I=Industrial, Q=Automotive, M=Military
   │       │        │        └── Package code (see table below)
   │       │        └── Variant letter (A, B, C for improved specs)
   │       └── Series number (e.g., 358, 7805, 317)
   └── Family prefix (LM, TL, TPS, SN, etc.)

Example Decoding

LM358DR
│  │  ││
│  │  │└── R = Tape and Reel
│  │  └── D = SOIC package
│  └── 358 = Dual Op-Amp series
└── LM = Linear/Mixed-signal prefix

TPS63020DSJR
│  │    │  │
│  │    │  └── R = Tape and Reel
│  │    └── DSJ = SON package (3x3mm)
│  └── 63020 = Buck-Boost converter
└── TPS = Power Supply prefix

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Package Codes

Through-Hole Packages

| Code | Package | Pin Count | Notes | |------|---------|-----------|-------| | N | DIP | 8-40 | Plastic DIP | | P | DIP | 8-40 | Plastic DIP (alternate) | | T | TO-220 | 3-5 | Power package | | T3 | TO-220 | 3 | 3-pin TO-220 | | K | TO-3 | 2-3 | Metal can power | | H | TO-39 | 8 | Metal can |

Surface Mount - Small Signal

| Code | Package | Pitch | Notes | |------|---------|-------|-------| | D | SOIC | 1.27mm | 8-16 pins | | DW | SOIC-Wide | 1.27mm | Wide body | | PW | TSSOP | 0.65mm | Thin profile | | DGK | MSOP/VSSOP | 0.5mm | Mini SOIC | | DBV | SOT-23 | 0.95mm | 5-6 pins | | DRL | SOT-553 | 0.5mm | Very small | | DRV | SON | 0.5mm | QFN variant |

Surface Mount - Power

| Code | Package | Notes | |------|---------|-------| | KC | TO-252 (DPAK) | Medium power SMD | | KV | TO-252 | Variant | | MP | SOT-223 | 4-pin power | | DT | SOT-223 | Alternate code |

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Family Prefixes

Analog/Linear (LM, TL, NE)

| Prefix | Category | Examples | |--------|----------|----------| | LM | General analog | LM358 (op-amp), LM7805 (regulator), LM317 (adj reg) | | TL | TI Linear | TL072 (JFET op-amp), TL431 (reference) | | NE | Signetics legacy | NE5532 (low-noise op-amp) | | UA | Original TI | UA7805 (equivalent to LM7805) |

Power Management (TPS, TLV, LP)

| Prefix | Category | Examples | |--------|----------|----------| | TPS | Power supply | TPS63020 (buck-boost), TPS7350 (LDO) | | TLV | Low voltage | TLV431 (low-V reference) | | LP | Low power | LP2950 (LDO) |

Logic & Interface (SN, CD)

| Prefix | Category | Examples | |--------|----------|----------| | SN | TI logic | SN74HC595 (shift register) | | CD | CMOS logic | CD4017 (decade counter) |

Microcontrollers (MSP, CC)

| Prefix | Category | Examples | |--------|----------|----------| | MSP430 | Ultra-low-power MCU | MSP430G2553 | | CC | Wireless MCU | CC2541 (BLE), CC3200 (WiFi) |

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Temperature Grades

| Suffix | Range | Application | |--------|-------|-------------| | (none) | 0°C to +70°C | Commercial | | I | -40°C to +85°C | Industrial | | A | -40°C to +85°C | Industrial (alternate) | | Q | -40°C to +125°C | Automotive | | M | -55°C to +125°C | Military |

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Critical Pattern Conflicts

LM35 vs LM358

LM35 = Temperature sensor (letter A-D after "35") LM358 = Dual op-amp (digit 8 after "35")

LM35DZ   → Temperature sensor (D = grade, Z = TO-92 package)
LM358N   → Dual op-amp (8 = part of series, N = DIP package)

Handler Pattern:

// LM35 sensors: letter A-D immediately after "35"
"^LM35[A-D][A-Z0-9-]*$"

// LM358 op-amps: digit after "35"
"^LM358[A-Z0-9]*(?:N|D|P|DG|PW)?$"

78xx vs 79xx Regulators

78xx = Positive voltage regulator 79xx = Negative voltage regulator

LM7805CT  → +5V regulator, TO-220
LM7905CT  → -5V regulator, TO-220

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Common Series Reference

Op-Amps

| Series | Type | Equivalent | |--------|------|------------| | LM358 | Dual, general purpose | MC1458, RC4558 | | LM324 | Quad, general purpose | MC3403 | | TL072 | Dual JFET, low noise | TL082 | | TL074 | Quad JFET | TL084 | | NE5532 | Dual, low noise | SA5532 | | LM311 | Comparator | LM211 |

Voltage Regulators

| Series | Type | Voltage | Equivalent | |--------|------|---------|------------| | LM7805 | Fixed positive | +5V | MC7805, UA7805 | | LM7812 | Fixed positive | +12V | MC7812 | | LM7905 | Fixed negative | -5V | MC7905 | | LM317 | Adjustable positive | 1.25-37V | LM350, LM338 | | LM337 | Adjustable negative | -1.25 to -37V | - |

Temperature Sensors

| Series | Type | Output | |--------|------|--------| | LM35 | Precision analog | 10mV/°C | | TMP36 | Precision analog | 10mV/°C + 500mV offset |

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Handler Implementation Notes

Package Code Extraction

// TI package codes come AFTER the base part number
// Example: LM358D → base="LM358", package="D"

// For voltage regulators, package often follows voltage
// Example: LM7805CT → base="LM7805", package="CT" (TO-220)

// CRITICAL: Check longer suffixes BEFORE shorter ones!
// "LM7805DT".endsWith("T") is TRUE, but DT=SOT-223, not TO-220
if (suffix.endsWith("CT")) return "TO-220";   // 2-char first
if (suffix.endsWith("DT")) return "SOT-223";  // 2-char first
if (suffix.endsWith("MP")) return "SOT-223";  // 2-char first
if (suffix.endsWith("KC")) return "TO-252";   // 2-char first
if (suffix.endsWith("T")) return "TO-220";    // 1-char LAST

// Same for SOIC vs MSOP vs TSSOP
if (suffix.startsWith("DGK")) return "MSOP";  // 3-char first
if (suffix.startsWith("PW")) return "TSSOP";  // 2-char
if (suffix.startsWith("D")) return "SOIC";    // 1-char LAST

Bug Example (Fixed in PR #78):

// WRONG - "DT" ends with "T" so this returns TO-220 incorrectly
if (upperMpn.endsWith("T")) return "TO-220";   // Matches first!
if (upperMpn.endsWith("DT")) return "SOT-223"; // Never reached

// CORRECT - Check longer suffixes first
if (upperMpn.endsWith("DT")) return "SOT-223"; // Matches correctly
if (upperMpn.endsWith("T")) return "TO-220";   // Only bare "T"

Series Extraction

// Extract base series before package/temperature suffix
// LM358APWRQ1 → LM358 (ignore A=variant, PW=package, R=tape, Q1=automotive)

// Voltage regulators include voltage in series
// LM7805 → full series is "LM7805" not just "LM78"

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Related Files

• Handler: manufacturers/TIHandler.java
• Component types: OPAMP_TI, VOLTAGE_REGULATOR_LINEAR_TI, VOLTAGE_REGULATOR_SWITCHING_TI, TEMPERATURE_SENSOR_TI, LED_TI
• Package registry: PackageCodeRegistry.java (standard codes)

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Learnings & Edge Cases

• LM317 vs LM350 vs LM338: Same adjustable regulator family, different current ratings (1.5A/3A/5A)
• UA prefix: Original TI designation, functionally equivalent to LM (UA7805 = LM7805)
• Automotive suffix Q1/Q: Indicates AEC-Q100 qualified for automotive use
• Green/lead-free: Suffix "G" or "E" sometimes indicates RoHS compliance
• Suffix ordering bug (PR #78): When using endsWith() for package detection, ALWAYS check longer suffixes first. "DT" ends with "T", so checking "T" first causes wrong results.
• TIHandlerTest location: Tests must be in handlers package, NOT manufacturers package (causes classpath shadowing)
• Handler initialization: Use MPNUtils.getManufacturerHandler("LM358") in tests, not new TIHandler() (causes circular init)

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