The DS1775 digital thermometer and thermostat is offered in a tiny 5-pin SOT-23 package and provides ±2°C accuracy over a -10°C to +85°C range. Thermometer data is read out over a 2-wire serial bus in 2's complement format with 9 to 12 bits of resolution (user-programmable). The DS1775 is available with eight different hard-wired addresses, allowing up to eight DS1775 devices to operate on the same bus. The eight versions of the DS1775 are:
Part Number
Address
DS1775R
000
DS1775R1
001
DS1775R2
010
DS1775R3
010
DS1775R4
100
DS1775R5
101
DS1775R6
110
DS1775R7
111
The DS1775 offers thermostatic functionality with over-temperature (TOS) and under-temperature (THYST) user-programmable trip-points stored in on-chip SRAM. The two trip-points provide programmable thermostat hysteresis: the thermostat output is asserted when the measured temperature exceeds TOS and it remains active until the temperature falls below THYST.
The DS1775 is functionally compatible with the DS75 and the LM75.
Key Features
Applications/Uses
Tiny 5-pin SOT-23 package
±2°C accuracy from -10°C to +85°C
Measures temperatures from -55°C to +125°C (-67°F to +257°F)
9- to 12-bit user-configurable resolution
Dedicated thermostatic logic output
Thermostatic settings are user-programmable
Data is transferred over 2-wire/SMBus interface
Eight address versions allow up to eight DS1775 to operate on one bus
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Devices:
1-8 of 8
DS1775R
Free Sample
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Status
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
Temp
RoHS/Lead-Free? Materials Analysis
DS1775R+T&R
Active
SOT;5 pin;9 mm²
Outline Drawing: 21-0057 (PDF)
Land Pattern: 90-0174 (PDF)
Use pkgcode/variation: U5+1*
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