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

---

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)