Specification	DS1621S+

Accuracy - Highest (Lowest) [custom]	2 °C
Accuracy - Highest (Lowest) [custom]	0.5 °C
Features	Standby Mode, One-Shot, Output Switch
Mounting Type	Surface Mount
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-55 C
Output Type	I2C
Package / Case	0.154 in
Package / Case	8-SOIC
Package / Case	3.9 mm
Resolution	9 b
Sensing Temperature - Local [Max]	125 °C
Sensing Temperature - Local [Min]	-55 ¯C
Sensor Type	Digital, Local
Supplier Device Package	8-SOIC
Test Condition [Max]	125 °C
Test Condition [Max]	70 °C
Test Condition [Min]	0 °C
Test Condition [Min]	-55 ¯C
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	2.7 V

DS1621 Series

Part	Accuracy - Highest (Lowest) [custom]	Accuracy - Highest (Lowest) [custom]	Supplier Device Package	Mounting Type	Operating Temperature [Min]	Operating Temperature [Max]	Features	Voltage - Supply [Max]	Voltage - Supply [Min]	Output Type	Sensing Temperature - Local [Max]	Sensing Temperature - Local [Min]	Package / Case	Resolution	Sensor Type	Test Condition [Max]	Test Condition [Max]	Test Condition [Min]	Package / Case	Package / Case	Package / Case
Analog Devices Inc./Maxim Integrated DS1621+	2 °C	0.5 °C	8-PDIP	Through Hole	-55 C	125 °C	One-Shot Output Switch Standby Mode	5.5 V	2.7 V	I2C	125 °C	-55 ¯C	8-DIP (0.300" 7.62mm)	9 b	Digital Local	125 °C	70 °C	-55 ¯C
Analog Devices Inc./Maxim Integrated DS1621S+T&R	2 °C	0.5 °C	8-SOIC	Surface Mount	-55 C	125 °C	One-Shot Output Switch Standby Mode	5.5 V	2.7 V	I2C	125 °C	-55 ¯C	8-SOIC	9 b	Digital Local	125 °C	70 °C	-55 ¯C	0.154 in	3.9 mm
Analog Devices Inc./Maxim Integrated DS1621S	2 °C	0.5 °C	8-SOIC	Surface Mount	-55 C	125 °C	One-Shot Output Switch Standby Mode	5.5 V	2.7 V	I2C	125 °C	-55 ¯C	8-SOIC	9 b	Digital Local	125 °C	70 °C	-55 ¯C	0.154 in	3.9 mm
Analog Devices Inc./Maxim Integrated DS1621	2 °C	0.5 °C	8-PDIP	Through Hole	-55 C	125 °C	One-Shot Output Switch Standby Mode	5.5 V	2.7 V	I2C	125 °C	-55 ¯C	8-DIP (0.300" 7.62mm)	9 b	Digital Local	125 °C	70 °C	-55 ¯C
Analog Devices Inc./Maxim Integrated DS1621S/T&R	2 °C	0.5 °C	8-SOIC	Surface Mount	-55 C	125 °C	One-Shot Output Switch Standby Mode	5.5 V	2.7 V	I2C	125 °C	-55 ¯C	8-SOIC	9 b	Digital Local	125 °C	70 °C	-55 ¯C	0.154 in	3.9 mm
Analog Devices Inc./Maxim Integrated DS1621V	2 °C	0.5 °C	8-SOIC	Surface Mount	-55 C	125 °C	One-Shot Output Switch Standby Mode	5.5 V	2.7 V	I2C	125 °C	-55 ¯C	8-SOIC	9 b	Digital Local	125 °C	70 °C	-55 ¯C			0.209 in 5.3 mm
Analog Devices Inc./Maxim Integrated DS1621S+W	2 °C	0.5 °C	8-SOIC	Surface Mount	-55 C	125 °C	One-Shot Output Switch Standby Mode	5.5 V	2.7 V	I2C	125 °C	-55 ¯C	8-SOIC	9 b	Digital Local	125 °C	70 °C	-55 ¯C	0.154 in	3.9 mm
Analog Devices Inc./Maxim Integrated DS1621V+T&R	2 °C	0.5 °C	8-SOIC	Surface Mount	-55 C	125 °C	One-Shot Output Switch Standby Mode	5.5 V	2.7 V	I2C	125 °C	-55 ¯C	8-SOIC	9 b	Digital Local	125 °C	70 °C	-55 ¯C			0.209 in 5.3 mm
Analog Devices Inc./Maxim Integrated DS1621S+	2 °C	0.5 °C	8-SOIC	Surface Mount	-55 C	125 °C	One-Shot Output Switch Standby Mode	5.5 V	2.7 V	I2C	125 °C	-55 ¯C	8-SOIC	9 b	Digital Local	125 °C	70 °C	-55 ¯C	0.154 in	3.9 mm
Analog Devices Inc./Maxim Integrated DS1621V+	2 °C	0.5 °C	8-SOIC	Surface Mount	-55 C	125 °C	One-Shot Output Switch Standby Mode	5.5 V	2.7 V	I2C	125 °C	-55 ¯C	8-SOIC	9 b	Digital Local	125 °C	70 °C	-55 ¯C			0.209 in 5.3 mm

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$	Updated

Digikey	Tube	1	$ 7.55	<4d
		5	$ 6.82
		10	$ 6.54
		25	$ 6.21
		50	$ 5.99
		100	$ 5.78
		500	$ 5.37
		1000	$ 5.22

Description

General part information

DS1621 Series

The DS1621 Digital Thermometer and Thermostat provides 9-bit temperature readings, which indicate the temperature of the device. The thermal alarm output, TOUTis active when the temperature of the device exceeds a user-defined temperature TH. The output remains active until the temperature drops below user defined temperature TL, allowing for any hysteresis necessary. User-defined temperature settings are stored in nonvolatile memory so parts may be programmed prior to insertion in a system. Temperature settings and temperature readings are all communicated to/from the DS1621 over a simple 2-wire serial interface.ApplicationsMedicalNetworkingPersonal ComputingRouters/SwitchesTest Measurement SystemsWireless Base Stations

Documents

Technical documentation and resources

Package Drawing - Small-Outline IC, Narrow (0.15in)

Package Drawing

DS1621 Reliability Data

Reliability Data