Product Introduction

The SN74LS161N is Synchronous 4-bit Binary Counter (direct clear).It have four flip-flops on the rising (positive-going) edge of the clock input waveform. This counter is fully programmable; that is, the output may be preset to either level. As presetting is synchronous, 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. Low-to-high transitions at the load input should be avoided when the clock is low if the enable inputs are high at or before the transition. The clear function is asynchronous and a low level at the clear input sets all four of the flip-flop outputs low regardless of the levels of clock, load, or enable inputs. The carry look- ahead circuitry provides for cascading counters for n-bit synchronous applications without additional getting. Instrumental in accomplishing this function are two count-enable inputs and a ripple carry output.

Product Features

●Synchronous 4-bit Binary Counter (0-15 count)
●Fully compatible with TTL/DTL input logic level
●Low efficiency asynchronous clear 0 terminal
●With carry output flag RC, multi chip cascade extension can be realized.
●Clock rising edge effective
●Package format: DIP16, SOP16

Product Applications

●Digital logic driver
●Industrial control application
●Other application areas