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CD54HC85, CD74HC85, CD54HCT85, CD74HCT85
SCHS136F – AUGUST 1997 – REVISED FEBRUARY 2022
CDx4HC85, CDx4HCT85 High-Speed CMOS Logic 4-Bit Magnitude Comparator
1 Features
• Buffered inputs and outputs • Typical propagation delay: 13 ns (data to output at
VCC = 5 V, CL = 15 pF, TA = 25℃) • Serial or parallel expansion without external gating • 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.