HD74HC244 Datasheet, PDF (5/10 Pages) Hitachi Semiconductor – Octal Buffers/Line Drivers/Line Receivers(with noninverted 3-state outputs)

HD74HC244
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_PHL
time
V_CC (V)
2.0
4.5
Min Typ Max Min
— — 90 —
— 12 18 —
Max Unit
115 ns
23
6.0
— — 15 — 20
t _PLH
2.0
— — 90 — 115 ns
4.5
— 10 18 — 23
6.0
— — 15 — 20
Output enable
t _ZL
time
2.0
— — 150 — 190 ns
4.5
— 11 30 — 38
6.0
— — 26 — 33
t _ZH
2.0
— — 150 — 190 ns
4.5
— 12 30 — 38
6.0
— — 26 — 33
Output disable
t _LZ
time
2.0
— — 150 — 190 ns
4.5
— 16 30 — 38
6.0
— — 26 — 33
t _HZ
2.0
— — 150 — 190 ns
4.5
— 19 30 — 38
6.0
— — 26 — 33
Output rise/fall
t _TLH
time
t _THL
2.0
— — 60 — 75 ns
4.5
— 4 12 — 15
6.0
— — 10 — 13
Input capacitance Cin
—
— 5 10 — 10 pF
Test Conditions
5