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 ``` --- ## 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 | --- ## 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) | --- ## 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 | --- ## 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:** ```java // 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 | 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 | --- ## Handler Implementation Notes ### Package Code Extraction ```java // 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)**: ```java // 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 ```java // 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) <!-- Add new learnings above this line -->