ti

name: ti description: Texas Instruments MPN encoding patterns, suffix decoding, and handler guidance. Use when working with TI components or TIHandler.

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

Package Codes

Through-Hole Packages

Surface Mount - Small Signal

Surface Mount - Power

Family Prefixes

Analog/Linear (LM, TL, NE)

Power Management (TPS, TLV, LP)

Logic & Interface (SN, CD)

Microcontrollers (MSP, CC)

Temperature Grades

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

Common Series Reference

Op-Amps

Voltage Regulators

Temperature Sensors

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"

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)

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)