DS1922T-F5

The DS1922T-F5 temperature logger iButtons® are rugged, self-sufficient systems that measure temperature and record the result in a protected memory section. The feature of DS1922T-F5 are as follows: (1)Automatically Wakes up, Measures Temperature, and Stores Values in 8kB of Datalog Memory in 8- or 16-Bit Format; (2)Digital Thermometer Measures Temperature with 8-Bit (0.5°C) or 11-Bit (0.0625°C) Resolution; (3)Accuracy Better than ±0.5°C from -10°C to +65°C (DS1922L), ±0.5°C from +20°C to +75°C (DS1922T) with Software Correction; (4)Water resistant - 1 meter under water for 30 days; (5)Sampling Rate from 1s up to 273hrs; (6)Programmable Recording Start Delay After Elapsed Time or Upon a Temperature Alarm Trip Point; (7)Programmable High and Low Trip Points for Temperature Alarms.

The absolute maximum ratings of the DS1922T-F5 are: (1)I/O Voltage to GND: -0.3V, +6V; (2)I/O Sink Current: 20mA; (3)Operating Temperature Range: -40°C to +85°C; (4)Junction Temperature: +150°C; (5)Storage Temperature Range: -40°C to +85°C*.

The following is about the electrical characteristics of DS1922T-F5: (1)1-Wire Pullup Resistance: 2.2 k; (2)Input Capacitance: 100pF typical and 800 pF max; (3)Input Load Current: 6A typical and 10 A max at I/O pin at VPUP; (4)High-to-Low Switching Threshold: 0.4 V min and 3.2 V max; (5)Input Low Voltage: 0.3 V max; (6)Low-to-High Switching Threshold: 0.7V min and 3.4 V max; (7)Switching Hysteresis: 0.09V min and  N/A V max; (8)Output Low Voltage: 0.4 V max at 4mA; (9)Recovery Time: 5s max at Standard speed, RPUP = 2.2k; (10)Rising-Edge Hold-Off Time: 0.6s min and 2.0 s max.