Before revision: +Logic supply voltages Supply voltage Technology Logic families (examples) Reference 5V, 10V, 15V Metal CMOS 4000, 74C 5V TTL 7400, 74S, 74LS, 74ALS, 74F, 74H 5V BiCMOS 74ABT, 74BCT 5V CMOS (TTL I/O) 74HCT, 74AHCT, 74ACT 3.3V, 5V CMOS 74HC, 74AHC, 74AC 5V LVCMOS 74LVC, 74AXP 3.3V LVCMOS 74LVC, 74AUP, 74AXC, 74AXP 2.5V LVCMOS 74LVC, 74AUP, 74AUC, 74AXC, 74AXP 1.8V LVCMOS 74LVC, 74AUP, 74AUC, 74AXC, 74AXP 1.5V LVCMOS 74AUP, 74AUC, 74AXC, 74AXP 1.2V LVCMOS 74AUP, 74AUC, 74AXC, 74AXP 3-value logic Though rare, ternary computers evaluate base 3 three-valued or ternary logic using 3 voltage levels.
After revision: More than two levels+Logic supply voltages Supply voltage Technology Logic families (examples) Reference 5V, 10V, 15V Metal CMOS 4000, 74C 5V TTL 7400, 74S, 74LS, 74ALS, 74F, 74H 5V BiCMOS 74ABT, 74BCT 5V CMOS (TTL I/O) 74HCT, 74AHCT, 74ACT 3.3V, 5V CMOS 74HC, 74AHC, 74AC 5V LVCMOS 74LVC, 74AXP 3.3V LVCMOS 74LVC, 74AUP, 74AXC, 74AXP 2.5V LVCMOS 74LVC, 74AUP, 74AUC, 74AXC, 74AXP 1.8V LVCMOS 74LVC, 74AUP, 74AUC, 74AXC, 74AXP 1.5V LVCMOS 74AUP, 74AUC, 74AXC, 74AXP 1.2V LVCMOS 74AUP, 74AUC, 74AXC, 74AXP 3-value logic Though rare, ternary computers evaluate base 3 three-valued or ternary logic using 3 voltage levels.