The RCA CD54/74AC240, CD54/74AC241, and CD54/74AC244 and the CD54/74ACT240, CD54/74ACT241, and CD54/74ACT244 3-state octal buffer/line drivers use the RCA ADVANCED CMOS technology. The
CD54/74AC/ACT240 and CD54/74AC/ACT244 have active-LOW output enables (1OE, 2OE). The CD54/74AC/ACT241 has one active-LOW (1OE) and one active-HIGH (2OE) output enable.