CD54ACT163 - Texas Instruments

CD54ACT163 4-BIT SYNCHRONOUS BINARY COUNTERS

ordering information The ’ACT163 devices are 4-bit binary counters. These synchronous, presettable counters feature an internal carry look-ahead for application in high-speed counting designs. Synchronous B4 C5 D6 ENP 7 GND 8 13 QB 12 QC 11 QD 10 ENT 9 LOAD operation is provided by having all flip-flops clocked simultaneously so that the outputs change, .

Features

input triggers the four flip-flops on the rising (positive-going) edge of the clock waveform. The counters are fully programmable; that is, they can be preset to any number between 0 and 9 or 15. Presetting is synchronous; therefore, setting up a low level at the load input disables the counter and causes the outputs to agree with the setup data after the next clock pulse, regardless of the levels of the enable inputs. The clear function is synchronous. A low level at the clear (CLR) input sets all four of the flip-flop outputs low after the next low-to-high transition of CLK, regardless o.