HEF4502BP 查看數據表（PDF） - Philips Electronics
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HEF4502BP Datasheet PDF : 4 Pages
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Philips Semiconductors
Strobed hex inverter/buffer
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; CL = 50 pF; input transition times ≤ 20 ns
VDD
V
SYMBOL TYP. MAX.
Propagation delays
Dn, E → On
HIGH to LOW
5
10
tPHL
15
5
LOW to HIGH
10
tPLH
15
Output transition times
5
HIGH to LOW
10
tTHL
15
5
LOW to HIGH
10
tTLH
15
3-state propagation delays
Output disable times
EO → On
HIGH
5
10
tPHZ
15
5
LOW
10
tPLZ
15
Output enable times
EO → On
HIGH
5
10
tPZH
15
5
LOW
10
tPZL
15
85
170 ns
40
80 ns
35
70 ns
80
160 ns
35
70 ns
30
60 ns
25
50 ns
12
24 ns
8
15 ns
30
60 ns
15
30 ns
12
24 ns
60
160 ns
55
140 ns
55
140 ns
50
100 ns
35
70 ns
30
60 ns
60
120 ns
35
70 ns
30
60 ns
55
110 ns
25
50 ns
20
40 ns
Product specification
HEF4502B
buffers
TYPICAL EXTRAPOLATION
FORMULA
77 ns + (0,17 ns/pF) CL
37 ns + (0,06 ns/pF) CL
33 ns + (0,04 ns/pF) CL
66 ns + (0,28 ns/pF) CL
28 ns + (0,13 ns/pF) CL
25 ns + (0,10 ns/pF) CL
10 ns + (0,30 ns/pF) CL
7 ns + (0,11 ns/pF) CL
5 ns + (0,07 ns/pF) CL
5 ns + (0,50 ns/pF) CL
3 ns + (0,24 ns/pF) CL
3 ns + (0,18 ns/pF) CL
January 1995
4
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