The maximum clock frequency of the SN54LS193J is 25 MHz.
The counter can be reset by applying a low pulse to the Master Reset (MR) input.
The Load (LOAD) input is used to load the counter with a preset value. When the LOAD input is low, the counter is loaded with the data on the parallel inputs (P0-P3).
The SN54LS193J can be used as either a binary counter or a BCD (Binary-Coded Decimal) counter, depending on the mode selected by the Mode (MODE) input.
The maximum count value of the SN54LS193J is 15 (binary) or 9 (BCD).