DESCRIPTION
OF ”B” SERIES CMOS DEVICES” READY) indicates if the FIFO contains data. As the earliest data are removed from the bottom of the data stack (the output end), all data entered later will automatically propagate (ripple) toward the output. EY (Plastic Package) F (Ceramic Package) C1 (Chip Carrier) ORDER CODES : HCC40105BF HCF40105BEY HCF40105BC1 DESCRIPTION
It is capable of handling input and output data at different shifting rates. This feature makes it particularly useful as a buffer between asynchronous systems. Each word position in the register is clocked by a control flip-flop, which stores a marker bit. A ”1” signifies that the position’s data is filled and a ”0” denotes a vacancy in that position. The control flip-flop detects the state of the preceding flip-flop and communicates its own status to the succeeding flip-flop. When a control flip-flop is in the ”0” state and sees a ”1” in the preceding flip-flop, it generates a clock pulse that transfers data from the preceding four data latches into its own four data latches and resets the preceding flip-flop to ”0”.
STMicroelectronics
