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Analog Devices DS1721U+T&R — Discrete Semiconductors

DS1721U+T&R Analog Devices Temp Sensor, I²C, -55°C to 125°C

MPNDS1721U+T&R
End of Life

Analog Devices DS1721U+T&R digital temperature sensor, I²C output, 11-bit resolution, ±1°C accuracy, -55°C to 125°C range, 8-uMAX/uSOP package, Tape & Reel.

$7.42Ref. price · indicative, final on quote
Packaging8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DS1721U+T&R specifications
ParameterValue
Output typeI²C
Sensor typeDigital, Local
MountingSurface Mount
Voltage2.7V ~ 5.5V
Operating temperature-55°C ~ 125°C
PackageTape & Reel (TR); Cut Tape (CT)
FeaturesOne-Shot, Output Switch, Programmable Limit, Programmable Resolution, Standby Mode
Resolution11 b
Case8-TSSOP, 8-MSOP (0.118\", 3.00mm Width)
Test condition-10°C ~ 85°C (-55°C ~ 125°C)
Accuracy - highest (Lowest)±1°C (±2°C)
Sensing temperature - local-55°C ~ 125°C

Product details

Temperature range and accuracy for harsh environments

The DS1721U+T&R: Accuracy is ±1°C (typical) and ±2°C (maximum) across the full range — tight enough for thermal management in a server rack or battery pack, where a 2°C offset can trigger a false overtemperature shutdown.

I²C bus integration and programmable features

Digital output via I²C means the sensor connects directly to the SDA/SCL lines of a microcontroller without an ADC — the 11-bit resolution gives 0.0625°C per LSB, enough granularity for most thermal profiling tasks. Programmable limit and resolution, plus one-shot and standby modes, let the host controller wake the sensor, take a reading, and return to low-power sleep — useful in battery-powered loggers where every microamp counts.

Supplied on Tape & Reel (TR) or Cut Tape (CT), the reel format is the standard for pick-and-place assembly — the CT option works for prototype runs or small-batch builds where a full reel is overkill.

Frequently asked questions

What temperature range and accuracy does DS1721U+T&R offer?

The 11-bit resolution provides 0.0625°C per LSB.

What package does DS1721U+T&R come in?

It is supplied in an 8-uMAX/uSOP package (3.00mm width, 0.118" pitch), mechanically identical to 8-MSOP. Available on Tape & Reel or Cut Tape.