1 Features
• 1-Wire® interface with multi-drop shared bus and
cyclic redundancy check (CRC)
• Bus powered with operating voltage: 1.7 V to 5.5 V
• IEC 61000-4-2 ESD for 8-kV contact discharge
• Functional Safety-Capable
– Documentation available to aid functional safety
system design
• High-accuracy digital temperature sensor
– TMP1827
• ±0.2°C (maximum) from +10°C to +45°C
• ±0.3°C (maximum) from –40°C to +105°C
• ±0.4°C (maximum) from –55°C to +150°C
– TMP1827N
• ±0.9°C (maximum) from –55°C to +150°C
• Temperature measurement current: 94 μA
• Shutdown current: 1.3 μA
• 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
• 2Kb EEPROM features:
– Write operation in 64-bit block size
– Continuous read mode
– Read with write protection with 256-bit page
size
– Authenticated write protection mode with 256-
bit page size
– Programming current: 178 μA
• NIST traceable factory-programmed non erasable
64-bit identification number for device addressing
• Four configurable open-drain digital input-output
and temperature alert

2 Applications
• Factory automation and control
• Appliances
• Medical accessories
• CPAP machines
• Battery charger ICs
• EV charging infrastructure
• LED lighting
• Temperature transmitters
• Cold chain

3 Description
The TMP1827 is a high-accuracy, 1-Wire compatible
digital output temperature sensor with integrated 2Kb
EEPROM, SHA-256-HMAC authentication scheme
and a wide operating temperature range from –55°C
to +150°C. The TMP1827 provides a high accuracy
of ±0.1°C (typical)/±0.2°C (maximum) across the
temperature range of +10°C to +45°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 1-
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.