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
• 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 (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 TMP1826 is a high-accuracy, single-wire
compatible digital output temperature sensor with
integrated 2-kbit EEPROM with 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
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.
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.