The Ic Clock Driver ECL-TTL 28-PLCC is a device used for generating clock and frequency signals in microprocessors such as the 68030 and 68040 MPUs. It has a fanout buffer to distribute the signal and also includes a multiplexer with one output, operating at a frequency of 135MHz. The device comes in a 28-PLCC package with dimensions of 11.51x11.51.