HD74HC4518 Datasheet, PDF (5/9 Pages) Hitachi Semiconductor – Dual BCD Use Converters/Dual Binary Up Converters

HD74HC4518, HD74HC4520
Switching Characteristics
Item
Symbol V_CC (V)
Maximum clock
frequency
f_max
2.0
4.5
6.0
Propagation delay time t_PLH
2.0
t_PHL
4.5
6.0
t_PLH
2.0
t_PHL
4.5
6.0
t_PLH
2.0
t_PHL
4.5
6.0
Pulse width
t_w
2.0
4.5
6.0
Removal time
t_rem
2.0
4.5
6.0
Output rise/fall time
t_TLH
2.0
t_THL
4.5
6.0
Input capacitance
Cin
—
Ta = 25°C
Min Typ Max
—— 5
— — 27
— — 32
— — 190
— 22 38
— — 32
— — 200
— 22 40
— — 34
— — 190
— 17 38
— — 32
80 — —
16
7
—
14 — —
0 ——
0 –3 —
0 ——
— — 75
— — 15
— — 13
— 5 10
Ta = –40 to +85°C
Min
Max
—
4
—
21
—
25
—
240
—
48
—
41
—
250
—
50
—
43
—
240
—
48
—
41
100
—
20
—
17
—
0
—
0
—
0
—
—
95
—
19
—
16
—
10
(C_L = 50 pF, Input t_r = t_f = 6 ns)
Unit
MHz
Test Conditions
ns Clock to Q
ns Reset to Q
ns Enable to Q
ns
ns Reset clock
ns
pF
Test Circuit
VCC
VCC
Input
Pulse Generator
Zout = 50 Ω
Input
Pulse Generator
Zout = 50 Ω
Clock
Q₀
Enable
Q₃
Reset
Output
Output
C_L = 50 pF
C_L = 50 pF
Note : 1. C_L includes probe and jig capacitance.
Rev.2.00, Mar 30, 2006 page 5 of 8