General Description
SHT4xI-Digital is an industrial-grade digital sensor platform for measuring relative humidity and
temperature with different accuracy classes. It meets demanding ESD and robustness
requirements of industrial applications. The sensors can be interfaced via several preconfigured
I2C addresses. An integrated heater allows for advanced on-board-diagnostics while the sensor
element is designed for harsh conditions such as condensing environments. The four-pin dualflat-
no-leads package is suitable for surface mount technology (SMT) processing. Protection
options such as patented filter membranes and protective covers, available for any member of
the SHT4xI-Digital family, enable operation in harshest environments and advanced production
processes.

Features
• Accuracies ΔRH = ±2.0 %RH, ΔT = ±0.2 °C
• Supply voltage VDD = 2.3 V…5.5 V
• Average current: 21 μA (at meas. rate 1 Hz)
• I2C fast mode plus, CRC checksum
• Operating range: 0…100 %RH, −40…125 °C
• Variable power heater
• Fully functional in condensing environment
• Reliable water activity measurement in oil
• NIST traceability
• Mature technology from global market leader
• JEDEC JESD47 qualification, high ESD protec.
• Patented protection options