DS1821C Maxim Integrated Products, DS1821C Datasheet
DS1821C
Manufacturer Part Number
DS1821C
Description
TO92
Manufacturer
Maxim Integrated Products
Datasheet
1.DS1821C.pdf
(19 pages)
Specifications of DS1821C
Date_code
12+
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DS1821C+
Manufacturer:
EPCOS
Quantity:
1 000
FEATURES
Requires no external components
Unique 1-Wire
Operates over a -55°C to +125°C (-67°F to
Functions as a standalone thermostat with
Provides 8-bit (1°C resolution) centigrade
Accuracy is ±1°C over 0°C to +85°C range
Converts temperature to a digital word in
Available in 3-pin TO92 and 8-pin SO
Applications include thermostatic controls,
DESCRIPTION
The DS1821 can function as a standalone thermostat with user-programmable trip-points or as 8-bit
temperature sensor with a 1-Wire digital interface. The thermostat trip-points are stored in nonvolatile
memory, so DS1821 units can be programmed prior to system insertion for true standalone operation.
The DS1821 has an operating temperature range of –55°C to +125°C and is accurate to ±1°C over a range
of 0°C to +85°C. Communication with the DS1821 is accomplished through the open-drain DQ pin; this
pin also serves as the thermostat output.
1-Wire is a registered trademark of Maxim Integrated
Products, Inc.
port pin for communication
+257°F) temperature range
user-definable trip-points
temperature measurements
1 second (max)
packages
industrial systems, consumer products,
thermometers, or any thermally sensitive
system
Programmable Digital Thermostat and Thermometer
®
interface requires only one
1 of 19
PIN ASSIGNMENT
PIN DESCRIPTION
GND
DQ
V
NC
DD
(BOTTOM VIEW)
(DS1821C)
DS1821
1 2 3
1
TO92
- Ground
- Data In/Out and Thermostat Output
- Power Supply Voltage
- No Connect
2 3
GND
DQ
NC
NC
8-pin 208-mil SO
(DS1821S)
1
2
3
4
DS1821
8
7
6
5
V
NC
NC
NC
DD
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