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DS1620S
DS1620 Digital Thermometer and Thermostat BENEFITS AND FEATURES Simply Adds Temperature Monitoring and Control to Any System o Measures Temperatures From -55°C to +125°C in 0.5°C Increments; Fahrenheit Equivalent is -67°F to +257°F in 0.9°F Increments o Temperature is Read as a 9-Bit Value o Converts Temperature to Digital Word in 750ms (max) o Thermostatic Settings are User-Definable and Nonvolatile Can Be Used in a Wide Variety of Applications o Supply Voltage Range Covers From 2.7V to 5.5V o Data is Read From/Written Via a 3-Wire Serial Interface (CLK, DQ, RST ) Saves Space o Requires No External Components o 8-Pin DIP or SOIC (208-mil) Packages PIN ASSIGNMENT DQ 1 8 VDD CLK/CONV 2 7 THIGH RST 3 6 TLOW GND 4 5 TCOM DS1620S 8-Pin SOIC (208-mil) DQ 1 8 VDD CLK/CONV 2 7 THIGH RST 3 6 TLOW GND 4 5 TCOM DS1620 8-Pin DIP (300-mil) PIN DESCRIPTION DQ CLK/ CONV APPLICATIONS ⋅ ⋅ ⋅ ⋅ Thermostatic Controls Industrial Systems Consumer Products Thermometers RST GND THIGH TLOW TCOM VDD - 3-Wire Input/Output - 3-Wire Clock Input and Stand-alone Convert Input - 3-Wire Reset Input - Ground - High Temperature Trigger - Low Temperature Trigger - High/Low Combination Trigger - Power Supply Voltage (3V - 5V) DESCRIPTION The DS1620 Digital Thermometer and Thermostat provides 9–bit temperature readings which indicate the temperature of the device. With three thermal alarm outputs, the DS1620 can also act as a thermostat. THIGH is driven high if the DS1620’s temperature is greater than or equal to a user–defined temperature TH. TLOW is driven high if the DS1620’s temperature is less than or equal to a user–defined temperature TL. TCOM is driven high when the temperature exceeds TH and stays high until the temperature falls below that of TL. 1 of 12 19-7539; Rev 3; 3/15
MAXIM
Maxim Integrated
U.S.A
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