HD74HC4518 Datasheet, PDF (6/10 Pages) Hitachi Semiconductor – Dual BCD Use Converters/Dual Binary Up Converters

HD74HC4518/HD74HC4520
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 —
— — 27 —
Max Unit Test Conditions
4
MHz
21
6.0
— — 32 — 25
Propagation delay t_PLH
time
t _PHL
2.0
— — 190 — 240 ns Clock to Q
4.5
— 22 38 — 48
6.0
— — 32 — 41
t _PLH
2.0
— — 200 — 250 ns Reset to Q
t _PHL
4.5
— 22 40 — 50
6.0
— — 34 — 43
t _PLH
2.0
— — 190 — 240 ns Enable to Q
t _PHL
4.5
— 17 38 — 48
6.0
— — 32 — 41
Pulse width
t_w
2.0
80 — — 100 — ns
4.5
16 7 — 20 —
6.0
14 — — 17 —
Output rise/fall
t _TLH
time
t _THL
2.0
— — 75 — 95 ns
4.5
— — 15 — 19
6.0
— — 13 — 16
Input capacitance Cin
—
— 5 10 — 10 pF
Removel time
t _rem
2.0
0 —— 0
— ns Reset clock
4.5
0 –3 — 0
—
6.0
0 —— 0
—
6