DM74LS19

Pinout




Specifications

SupplyVoltage ......................................................7V
InputVoltage ........................................................7V
Operating Free Air Temperature Range
     54LS ............................................-55to+ 125
     DM74LS............................................... 0to +7
StorageTemperatureRange..............- 65to+ 150


Description

The 'LS192 is an updown BCD decade (8421) counter Separate Count Up and Count Down Clocks are used and in either counting mode the circuits operate synchronously The outputs of 'LS192 change state synchronous with the LOW-to- HIGH transitions on the clock inputs Separate Terminal Count Up and Terminal Count Down out- puts are provided which are used as the clocks for a subse- quent stage without extra logic thus simplifying multistage counter designs Individual preset inputs allow the circuits to be used as programmable counters Both the Parallel Load (PL) and the Master Reset (MR) inputs asynchronously override the clocks