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TC74A5-3.3VCTTR

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Microchip Tech Temperature Sensors, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TC74A5-3.3VCTTR

Microchip Tech · Temperature Sensors · SOT-23-5

TC74A5-3.3VCTTR from Microchip Tech, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 NC unconnected No internal connection; the pin has no internal connection per the pin function table.
2 GND power_in System ground and ground return for all TC74 functions.
3 VDD power_in Power supply input, specified from 2.7V to 5.5V (VDD = 3.3V for the TC74AX-3.3VXX part types).
4 SCLK input SMBus/I2C serial clock input that clocks data into and out of the TC74; SDA and SCLK must be connected to VDD or GND when the serial port is inactive.
5 SDA bidirectional Bidirectional SMBus/I2C serial data pin, with output low limited to 0.4V at IOL = 3 mA and 0.6V at IOL = 6 mA.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOT-23-5
Category Sensors
Pins 5

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Power-on Reset Threshold VPOR 1.2 2.2 V VDD Falling Edge or Rising Edge 2
Supply Voltage VDD 2.7 5.5 V Note 5 2
Operating Current IDD 350 µA VDD = 5.5V, Note 1 2
Standby Supply Current IDD-STANDBY 5 10 µA VDD = 3.3V; Serial Port Inactive, Note 4 2
Temperature Accuracy (+25°C to +85°C) TERR -2 2 °C +25°C < TA < +85°C 2
Temperature Accuracy (0°C to +125°C) TERR -3 3 °C 0°C < TA < +125°C 2
Conversion Rate CR 4 8 SPS Note 2 2
Logic Input High VIH 0.8 x VDD 2
Logic Input Low VIL 0.2 x VDD 2
SDA Output Low VOL 0.4 V IOL = 3 mA 2
SDA Output Low VOL 0.6 V IOL = 6 mA, Note 3 2
I/O Leakage ILEAK -1 0.1 1 µA 2
SMBus/I2C Clock Frequency fSMB 10 100 kHz 2
Low Clock Period tLOW 4.7 µsec 10% to 10% 2
High Clock Period tHIGH 4 µsec 90% to 90% 2
SMBus/I2C Rise Time tR 1000 nsec 10% to 90% 2
SMBus/I2C Fall Time tF 300 nsec 90% to10% 2
START Condition Setup Time (repeated START) tSU(START) 4 µsec 90% SCLK to 10% SDA 3
START Condition Hold Time tH(START) 4 µsec 3
Data In Setup Time tSU-DATA 1000 nsec 3
Data In Hold Time tH-DAT 1250 nsec 3
STOP Condition Setup Time tSU(STOP) 4 µsec 3
Bus Free Time Prior to New Transition tIDLE 4.7 µsec 3
Supply Voltage (absolute maximum) VDD 6 V 2
Current On Any Pin -50 50 mA 2
Operating Temperature TA -40 125 °C 2
Storage Temperature TSTG -65 150 °C 2
Junction Temperature TJ 150 °C 2
Input Capacitance CIN 5 pF SDA, SCLK 2
Power-on Reset Delay tPOR 500 µsec VDD VPOR (Rising Edge) 3

CAD (KiCad official)

  • Symbol: TC74A5-3.3VCTTR
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: tc74a5-3-3vcttr-etched.step / tc74a5-3-3vcttr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tc74a5-3-3vcttr.step / tc74a5-3-3vcttr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Microchip Tech datasheet (17 pp, sha256 acd41026fb425cdb, retrieved 2026-10-20, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF