HEF4027 View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
HEF4027 Datasheet PDF : 5 Pages
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Philips Semiconductors
Dual JK flip-flop
Product specification
HEF4027B
flip-flops
Fig.3 Logic diagram (one flip-flop).
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; CL = 50 pF; input transition times ≤ 20 ns
VDD
V
SYMBOL MIN. TYP.
Propagation delays
CP → O, O
5
105
HIGH to LOW
10 tPHL
40
15
30
5
85
LOW to HIGH
10 tPLH
35
15
30
SD → O
5
70
LOW to HIGH
10 tPLH
30
15
25
CD → O
5
120
HIGH to LOW
10 tPHL
45
15
35
SD → O
5
140
HIGH to LOW
10 tPHL
55
15
40
MAX.
210 ns
80 ns
60 ns
170 ns
70 ns
60 ns
140 ns
60 ns
50 ns
240 ns
90 ns
70 ns
280 ns
110 ns
80 ns
TYPICAL EXTRAPOLATION
FORMULA
78 ns + (0,55 ns/pF) CL
29 ns + (0,23 ns/pF) CL
22 ns + (0,16 ns/pF) CL
58 ns + (0,55 ns/pF) CL
27 ns + (0,23 ns/pF) CL
22 ns + (0,16 ns/pF) CL
43 ns + (0,55 ns/pF) CL
19 ns + (0,23 ns/pF) CL
17 ns + (0,16 ns/pF) CL
93 ns + (0,55 ns/pF) CL
33 ns + (0,23 ns/pF) CL
27 ns + (0,16 ns/pF) CL
113 ns + (0,55 ns/pF) CL
44 ns + (0,23 ns/pF) CL
32 ns + (0,16 ns/pF) CL
January 1995
3
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