Part Number : 74LS190
Function :Synchronous 4-Bit Binary Counters
Manufacturer : Motorola => Freescale
Pinout : 
Description
TheSN54/74LS190 is asynchronous UP/DOWN BCD Decade (8421) Counterand the SN54/74LS191is a synchronous UP/DOWN Modulo-16 BinaryCounter. State changes of the counters are synchronous with the LOW-to-HIGH transition of the Clock Pulse input.
Datasheet PDF Download
Other datasheets in the file : 54LS190J, 54LS191J, 74LS190, 74LS190D, 74LS190N