1 Features

? Single-wire interface with multi-drop shared bus

and CRC

? Bus powered with operating voltage from 1.7 V to

5.5 V

? IEC 61000-4-2 ESD for 8-kV contact discharge

? High-accuracy digital temperature sensor:

– ±0.1°C (typical)/±0.3°C (maximum) from –20°C

to +85°C

– ±0.3°C (typical)/±0.5°C (maximum) from –55°C

to +125°C

– ±0.5°C (typical)/±1.0°C (maximum) from –55°C

to +150°C

? Active current of 100-μA (typical) and shutdown

current of 1.0 μA (typical)

? 16-bit temperature resolution: 7.8125 m°C (1 LSB)

? Fast data rates of 90 kbps in overdrive speed

? Flexible user programmable short address modes

for faster device address

? SHA-256-HMAC authentication scheme

– FIPS 180-4 compliant Secure Hash

Implementation

– FIPS 198-1 compliant HMAC Implementation

? 2-kbit EEPROM features:

– Write operation in block size of 64-bits

– Continuous read mode

– Read with write protection with page size of

256-bits

– Authenticated write protection mode with page

size of 256-bits

– Read/write current of 95 μA/178 μA (typical)

? NIST traceable factory-programmed non erasable

64-bit identification number for device addressing

? 4 configurable open-drain digital input-output and

temperature alert

2 Applications

? Factory automation and control

? Appliances

? Medical accessories

? CPAP machine

? Battery packs

? Cold chain applications

? Temperature transmitters

? EV charging infrastructure

3 Description

The TMP1827 is a high-accuracy, single-wire

compatible digital output temperature sensor with

integrated 2-kbit EEPROM and SHA-256-HMAC

authentication scheme with a wide operating

temperature range from –55°C to +150°C. The

TMP1827 provides a high accuracy of ±0.1°C

(typical)/±0.3°C (maximum) across the temperature

range of –20°C to +85°C. Each device comes with

a factory programmed 64-bit unique identification

number for addressing and NIST traceability. The

TMP1827 supports both standard speed for legacy

application and overdrive mode with 90-kbps data rate

for low latency communication across a wide voltage

range of 1.7 V to 5.5 V.

In the simplest mode of operation, the TMP1827

single-wire interface, with an integrated 8-kV

IEC-61000-4-2 ESD protection on the data pin,

requires only a single connection and a ground return

in bus powered mode, which simplifies and reduces

cost by reducing the number of wires and external

protection components. Additionally, there is the VDD

power pin also available for applications that may

want to have a dedicated power supply.