Key facts
- Brand
- MICROCHIP
- Model
- TCN75A
- Industry
- Industrial
- Documents
- 3
- Languages
- EN · JA
- Last added
- 2012-05-09
Start here
Microchip TCN75A Datasheet
This document describes the TCN75A temperature sensor, including its band‑gap temperature sensor, ZA ADC, programmable registers, and 2‑wire I²C‑compatible interface. It details the functional block diagram, pin assignments, and the operation of the ALERT output.
Key sections cover electrical characteristics (voltage ranges, currents, ESD protection), typical performance curves (temperature accuracy, supply current), pin description tables, and functional description of the sensor and ADC. The datasheet also includes regulatory and contact information for Microchip worldwide sales and service.
MICROCHIP TCN75A specifications
| Operating Voltage Range (Vop) | 2.7 V to 5.5 V |
|---|---|
| Operating Current (Ipp) | 200 µA to 500 µA |
| Shutdown Current (IsHDN) | 0.1 µA to 2 µA |
| Power‑On Reset Threshold (Vpor) | 1.7 V |
| Temperature Sensor Accuracy at +25 °C | ±0.5 °C (typ.) |
| Conversion Time (12‑bit) | 240 ms |
| Alert Output High‑level Current | 1 mA |
| Alert Output Low‑level Voltage | 0.4 V |
| Latch‑up Current per Pin | 200 mA |
| Storage Temperature Range | -65 °C to +150 °C |
| Ambient Temperature (Power Applied) | 55 °C to +125 °C |
Source: Microchip TCN75A Datasheet
All MICROCHIP TCN75A documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the operating voltage range of the TCN75A?
The device operates from 2.7 V to 5.5 V.
What does the ALERT pin do?
The ALERT pin is an open‑drain output that signals when the ambient temperature exceeds the programmed limit.
What is the operating voltage range of the TCN75A?
The sensor operates from 2.7 V to 5.5 V.
From: Microchip TCN75A 2‑Wire Serial Temperature Sensor Datasheet
How many devices can share the 2‑wire bus?
Up to eight TCN75A devices can be connected on the same bus.
From: Microchip TCN75A 2‑Wire Serial Temperature Sensor Datasheet
How can the alert output polarity be configured?
The alert output polarity can be set to active‑low or active‑high via a programmable register option.
What is the shutdown current of the device?
The shutdown current is specified as 0.1 µA maximum.