CD74HC240

CD54HC240, CD74HC240, CD74HC241, CD54HC244 CD74HC244, CD54HCT240, CD74HCT240, CD54HCT241 CD74HCT241, CD54HCT244, CD74HCT244 SCHS167G – NOVEMBER 1998 – REVISED OCTOBER 2022 CDx4HC240, CDx4HCT240, CD74HC241, CDx4HCT241, CDx4HC244, CDx4HCT244 High-Speed CMOS Logic Octal Buffer/Line Drivers, Three-State 1 Features HC/HCT240 Inverting HC/HCT241 Non-inverting HC/HCT244 Non-inverting Typical propagation delay = 8ns at VCC = 5 V, CL = 15 pF, TA = 25℃ for HC240 Three-state outputs Buffered inputs High-current bus driver outputs Fanout (over temperature range) – Standard outputs: 10 LSTTL loads – Bus driver outputs: 15 LSTTL loads Wide operating temperature range: –55℃ to 125℃ Balanced propagation delay and transition times Significant power reduction compared to LSTTL Logic ICs HC types: – 2 V to 6 V operation – High noise immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5 V HCT types: – 4.5 V to 5.5 V operation – Direct LSTTL input logic compatibility, VIL = 0.8 V (max), VIH = 2 V (min) – CMOS input compatibility, II ≤ 1μA at VOL, VOH 2 Description The ’HC240 and ’HCT240 are inverting three-state buffers having two active-low output enables. The CD74HC241, ’HCT241, ’HC244 and ’HCT244 are non-inverting three-state buffers that differ only in that the 241 has one active-high and one active-low output enable, and the 244 has two active-low output enables. All three types have identical pinouts. PART NUMBER CD74HC240 CD54HC240 CD74HCT240 CD54HCT240 CD74HC241 C...