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CD54HC540, CD74HC540, CD54HC541, CD74HC541, CD74HCT540, CD54HCT541, CD74HCT541
SCHS189E – JANUARY 1998 – REVISED OCTOBER 2022
CDx4HC(T)541 High-Speed CMOS Logic Octal Buffer and Line Drivers Three-State
1 Features
• ’HC540, CD74HCT540: inverting • ’HC541, ’HCT541: non-inverting • Buffered inputs • Three-state outputs • Bus line driving capability • Typical propagation delay = 9 ns at VCC = 5 V,
CL = 15 pF, TA = 25℃ • 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.