HD74HC91 Datasheet, PDF (4/9 Pages) Hitachi Semiconductor – 8-bit Shift Register

HD74HC91
AC Characteristics (C_L = 50 pF, Input t_r = t_f = 6 ns)
Ta = 25°C
Ta = –40 to
+85°C
Item
Maximum clock
frequency
Symbol
f _max
V_CC (V)
2.0
4.5
Min Typ Max Min
——5 —
— — 25 —
Max Unit Test Conditions
4
MHz
20
6.0
— — 29 — 24
Propagation delay t_PLH
time
2.0
— — 210 — 265 ns
4.5
— 21 42 — 53
6.0
— — 36 — 45
t _PHL
2.0
— — 210 — 265 ns
4.5
— 21 42 — 53
6.0
— — 36 — 45
Pulse width
t_w
2.0
125 — — 156 — ns Clock
4.5
25 9 — 31 —
6.0
21 — — 26 —
Set up time
t _su
2.0
125 — — 156 — ns
4.5
25 1 — 31 —
6.0
21 — — 26 —
Hold time
t_h
2.0
5 —— 5
— ns
4.5
5 –1 — 5
—
6.0
5 —— 5
—
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
4