Part Number : 74LS193
Function : Synchronous Decade Counters(direct clear)
Package : DIP, SOIC 16 Pin Type
Maker : Motorola , Freescale
Pinouts : 
Description :
TheSN54LS192 / 74LS192 is an UP/DOWN BCD Decade (8421) Counter and the SN54LS193 / 74LS193 is an UP/DOWN MODULO-16 Binary Counter. Separate CountUp and Count Down Clocks are used and in either counting mode the circuits operate synchronously. The outputs change state synchronous with the LOW-to-HIGH transitions on the clock inputs.
Block Diagram
Features
• Low Power . . . 95 mW Typical Dissipation
• High Speed . . . 40 MHz Typical Count Frequency
• Synchronous Counting
• Asynchronous Master Reset and Parallel Load
• Individual Preset Inputs
• Cascading Circuitry Internally Provided
Datasheet PDF Download : 
Others datasheet of same file :
54LS192, 54LS192J, 54LS193, 54LS193J, 74LS192, 74193