1 Features
• 1-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
• Functional Safety-Capable
– Developed for functional safety applications
– Documentation available to aid functional safety
system design
• High-accuracy digital temperature sensor (DGK):
– ±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 +150°C
• High-accuracy digital temperature sensor (NGR)
– ±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
• 94-μA temperature measurement and 1.3 μA
shutdown current
• 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
• 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
– Read/write current of 95 μA/178 μA
• 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
• LED lighting
• Cold chain
• Temperature transmitters
• EV charging infrastructure

3 Description
The TMP1826 is a high-accuracy, 1-Wire compatible
digital output temperature sensor with integrated 2-
kbit EEPROM and a wide operating temperature
range from –55°C to +150°C. The TMP1826 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 TMP1826 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 TMP1826 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.
The 2-kbit EEPROM on the TMP1826 allows the host
to store application data in increments of 64 bits. With
user programmable 256-bit page size write protection
to avoid accidental overwrite, the EEPROM can be
used as non-volatile, read-only memory. The four
digital I/O pins are configurable for general purpose
functions, temperature alert, or provide host to identify
the position of the device on a shared bus.