Product Introduction

The SN74LS190N is a synchronously preset decimal counter (0-9 counting) operated by BCD (8421) code. It consists of four JK flip-flops and other gate circuits. There is a low effective asynchronous enabling preset (Load) that can preset input data (A/B/C/D) directly to the output port; a stop counting enabling control (G) that keeps the data unchanged after stopping counting; and an add/subtract counting control (Down/Up) that can realize continuous add-loop counting or continuous subtract-loop counting; and a spillover-in control. Bit output flag RC (low output efficiency) and overflow flag Max/Min (high output efficiency) can achieve multi-chip cascade expansion.

Product Features

●Synchronous Up / Down Decade Counter (0-9 count)
●With overflow flag, multiple cascading extensions can be implemented
●Clock rising edge effective
●Fully compatible with TTL/DTL input and output logic level
●A add / minus Counter control terminal (Down/Up)
●Package : DIP16, SOP16

Product Applications

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