component
TMP75
Public Made by Adomby adom
TI I2C digital temperature sensor, SOIC-8. 12-bit, 0.0625 °C, ±1 °C, LM75 pinout. Datasheet-verified.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTMP75
Texas Instruments · Digital temperature sensor · SOIC-8
Digital temperature sensor with an I2C / SMBus interface in the industry-standard LM75 form factor and pinout, in a SOIC-8 package. A 12-bit ADC gives 0.0625 °C resolution with ±1 °C typical accuracy, and a programmable ALERT output flags over-temperature. Three address pins (A0-A2) allow up to eight sensors on one bus. The default board-temperature monitor; no external components beyond a bypass cap.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SDA | bidirectional | Serial data line for the I2C/SMBus/Two-Wire interface. Open-drain output; requires an external pull-up resistor (typ. 4.7 kΩ). VIH ≥ 0.7·V+, VIL ≤ 0.3·V+; VOL ≤ 0.4 V at IOL = 3 mA. |
| 2 | SCL | input | Serial clock line for the I2C/SMBus/Two-Wire interface. Open-drain; requires an external pull-up resistor (typ. 4.7 kΩ). Supports standard, fast, and high-speed modes up to 3.4 MHz. |
| 3 | ALERT | output | Overtemperature alert / SMBus Alert output. Open-drain; requires an external pull-up resistor. VOL ≤ 0.4 V at IOL = 4 mA. Asserted when the measured temperature crosses the programmed THIGH/TLOW thresholds per the configuration register. |
| 4 | GND | power_in | Device ground reference (0 V). |
| 5 | A2 | input | I2C slave-address select bit 2. Tie to GND or V+ to set the corresponding address bit. May be left floating on the TMP75 for a third state, giving up to 8 selectable addresses. |
| 6 | A1 | input | I2C slave-address select bit 1. Tie to GND or V+ to set the corresponding address bit. May be left floating on the TMP75 for a third state. |
| 7 | A0 | input | I2C slave-address select bit 0. Tie to GND or V+ to set the corresponding address bit. May be left floating on the TMP75 for a third state. |
| 8 | V+ | power_in | Positive supply voltage input, 2.7 V to 5.5 V (absolute max 6.5 V on TMP75). Quiescent current typically 50 µA active, 0.1 µA in shutdown. A 0.01 µF bypass capacitor to GND is recommended. |
Key specifications
| Parameter | Value |
|---|---|
| Type | Digital temperature sensor (I2C / SMBus) |
| Resolution | 12-bit (0.0625 °C) |
| Accuracy | ±1 °C typ |
| Interface | I2C / SMBus, address pins A0-A2 |
| Alert | Programmable ALERT / OS output |
| Supply voltage | 2.7-5.5 V |
| Form factor | LM75-compatible pinout |
| Package | SOIC-8 |
| Body (L×W×H) | 4.9 × 3.9 × 1.75 mm |
Ordering variants
Same part, different packaging or reel option.
TMP75AID (SOIC-8, tube)TMP75AIDR (SOIC-8, tape & reel)
CAD (KiCad official)
- Symbol:
Sensor_Temperature:TMP1075D (pin-identical to TMP75) - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D)
- 3D model files:
tmp75-etched.step/tmp75-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tmp75.step/tmp75.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (35 pp, sha256
30ddeda575764440, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude) — every pin and dimension is cited to a datasheet page; refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).