Datasheet

SN54190, SN54191, SN54LS190, SN54LS191,
SN74190, SN74191, SN74LS190, SN74LS191
SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL
SDLS072 – DECEMBER 1972 – REVISED MARCH 1988
7
POST OFFICE BOX 655303 DALLAS, TEXAS 75265