SN54AS867, SN54AS869 SN74ALS867A, SN74ALS869, SN74.
Texas Instruments
SN54AS867 - SYNCHRONOUS 8-BIT UP/DOWN COUNTERS
SN54AS867, SN54AS869 SN74ALS867A, SN74ALS869, SN74AS867, SN74AS869 SYNCHRONOUS 8-BIT UP/DOWN COUNTERS SDAS115C – DECEMBER 1982 – REVISED JANUARY 1995 .
