There are 20 pins on it. Under -40°C, it can operate. The ambient temperature should not exceed 125°C. In order for this electrical component to work properly, it should be operated at a voltage of at least 2V. It is rated 6V for maximum supply voltage.
74HC245BQ Features
74HC245BQ Applications
There are a lot of Rochester Electronics 74HC245BQ Buffers & Transceivers applications.