Synchronous Binary Up/down Counters - National Semiconductor

These high speed synchronous Counters MM54HCT193 MM74HCT193 utilize advanced silicon-gate CMOS technology to achieve the high noise im- munity and low power consumption of CMOS technology, along with the speeds of low power Schottky TTL. The MM54HCT193 MM74HCT193 is a binary Counter having two separate Clock inputs, an UP COUNT input and a DOWN COUNT input. All outputs of the Flip-Flops are simul- taneously triggered on the low-to-high transition of either Clock while the other input is held high. The direction of counting is determined by which input is clocked. This device has TTL compatible inputs. It CAN drive 15 LS- TTL loads. This Counter may be preset by entering the desired data on the DATA A, DATA B, DATA C, and DATA D inputs. When the LOAD input is taken low, the data is loaded indepen- dently of either Clock input. This feature allows the Counter to be used as a divide-by-n Counter by modifying the count length with the preset inputs. In addition, the HCT193 CAN also be cleared. This is accom- plished by inputting a high on the CLEAR input. All 4 internal stages are set to a low level independently of either COUNT input. By National Semiconductor Corporation
MM54HCT193 's PackagesMM54HCT193 's pdf datasheet
MM74HCT193




MM54HCT193 Pinout, Pinouts
MM54HCT193 pinout,Pin out
This is one package pinout of MM54HCT193,If you need more pinouts please download MM54HCT193's pdf datasheet.

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