The datasheet presents info regarding calibration, humidity, and sensors. Lots of info like circuit, performance, and integrated circuit are presented in this datasheet.
In this datasheet you can get description about voltage output, response time, and sensor construction. These are excerpted from this datasheet:
The HIH-3605 monolithic IC (Integrated Circuit) humidity sensor is designed specifically for high volume OEM (Original Equipment Manufacturer) users. Direct input to a controller or other device is made possible by this sensor’s linear voltage output. With a typical current draw of only 200 A, the HIH-3605 is ideally suited for low drain, battery powered systems. The HIH-3605 delivers instrumentation quality RH sensing performance in a low cost, solderable SIP (Single In-line Package). Available in two lead spacing configurations, the RH sensor is a laser trimmed thermoset polymer capacitive sensing element with on-chip integrated signal conditioning.
Furthermore, this datasheet tells you info around sensor, linear voltage output, and humidity sensor.