HD74HC85 Datasheet, PDF (5/9 Pages) Hitachi Semiconductor – 4-Bit Magnitude Comparator

HD74HC85
AC Characteristics (C_L = 50 pF, Input t_r = t_f = 6 ns)
Ta = 25°C
Ta = –40 to
+85°C
Item
Symbol
Propagation delay t_PLH
time
t _PHL
V_CC (V)
2.0
4.5
6.0
Min Typ Max Min
— — 210 —
— 20 42 —
— — 36 —
Max Unit
265 ns
53
45
t _PLH
2.0
— — 175 — 220 ns
t _PHL
4.5
— 20 35 — 44
6.0
— — 30 — 37
t _PLH
2.0
— — 125 — 155 ns
t _PHL
4.5
— 12 25 — 31
6.0
— — 21 — 26
t _PLH
2.0
— — 155 — 195 ns
t _PHL
4.5
— 14 31 — 39
6.0
— — 26 — 33
Output rise/fall
t _TLH
time
t _THL
2.0
— — 75 — 95 ns
4.5
— 5 15 — 19
6.0
— — 13 — 16
Input capacitance Cin
—
— 5 10 — 10 pF
Test Conditions
Data word input to output
(Except A = Bout)
Data word input to A = Bout
A = Bin to A = Bout
Cascading input to output
(Except A = Bout)
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