HD74HC668 Datasheet, PDF (10/14 Pages) Hitachi Semiconductor – Synchronous UP/Down Decade,4-bit binary Counter

HD74HC668/HD74HC669
AC Characteristics (C_L = 50 pF, Input t_r = t_f = 6 ns) (cont)
Ta = 25°C
Ta = –40 to
+85°C
Item
Hold time
Symbol
t_h
V_CC (V)
2.0
4.5
Min Typ Max Min
5 —— 5
5 —— 5
Max Unit
— ns
—
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
Test Conditions
10