HD74HC108 View Datasheet(PDF) - Hitachi -> Renesas Electronics
Part Name
Description
Manufacturer
HD74HC108
Hitachi -> Renesas Electronics
HD74HC108 Datasheet PDF : 9 Pages
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HD74HC108
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = 25°C
Ta = –40 to
+85°C
Item
Maximum clock
frequency
Symbol
f max
VCC (V)
2.0
4.5
Min Typ Max Min
——6 —
— — 30 —
Max Unit Test Conditions
5
MHz
24
6.0
— — 35 — 28
Propagation delay tPLH
time
t PHL
2.0
— — 150 — 190 ns Clock to Q or Q
4.5
— 20 30 — 38
6.0
— — 26 — 33
2.0
— — 140 — 175 ns Clear to Q or Q
4.5
— 18 28 — 35
6.0
— — 24 — 30
2.0
— — 140 — 175 ns Preset to Q or Q
4.5
— 16 28 — 35
6.0
— — 24 — 30
Pulse width
tw
2.0
80 — — 100 — ns
4.5
16 7 — 20 —
6.0
14 — — 17 —
Setup time
t su
2.0
100 — — 125 — ns
4.5
20 2 — 25 —
6.0
17 — — 21 —
Hold time
th
2.0
5 —— 5
— ns
4.5
5 –1 — 5
—
6.0
5 —— 5
—
Removal time
t rem
2.0
100 — — 125 — ns
4.5
20 –2 — 25 —
6.0
17 — — 21 —
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
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