HEF4724 View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
HEF4724 Datasheet PDF : 7 Pages
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Philips Semiconductors
8-bit addressable latch
Product specification
HEF4724B
MSI
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; input transition times ≤ 20 ns
Dynamic power
dissipation per
package (P)
VDD
V
TYPICAL FORMULA FOR P (µW)
5
700 fi + ∑ (foCL) × VDD2
10
3700 fi + ∑ (foCL) × VDD2
15
10 800 fi + ∑ (foCL) × VDD2
where
fi = input freq. (MHz)
fo = output freq. (MHz)
CL = load capacitance (pF)
∑ (foCL) = sum of outputs
VDD = supply voltage (V)
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; CL = 50 pF; input transition times ≤ 20 ns
VDD
V
SYMBOL MIN. TYP. MAX.
Propagation delays
E → On
HIGH to LOW
LOW to HIGH
D → On
HIGH to LOW
LOW to HIGH
An → On
HIGH to LOW
LOW to HIGH
CL → On
HIGH to LOW
5
10
tPHL
15
5
10
tPLH
15
5
10
tPHL
15
5
10
tPLH
15
5
10
tPHL
15
5
10
tPLH
15
5
10
tPHL
15
115 230 ns
50 95 ns
35 70 ns
95 195 ns
40 80 ns
30 55 ns
95 190 ns
35 75 ns
25 55 ns
85 170 ns
35 75 ns
25 55 ns
110 225 ns
45 95 ns
35 70 ns
95 190 ns
40 80 ns
30 55 ns
85 165 ns
35 70 ns
25 50 ns
TYPICAL EXTRAPOLATION
FORMULA
88 ns + (0,55 ns/pF) CL
39 ns + (0,23 ns/pF) CL
27 ns + (0,16 ns/pF) CL
68 ns + (0,55 ns/pF) CL
29 ns + (0,23 ns/pF) CL
22 ns + (0,16 ns/pF) CL
68 ns + (0,55 ns/pF) CL
24 ns + (0,23 ns/pF) CL
17 ns + (0,16 ns/pF) CL
58 ns + (0,55 ns/pF) CL
24 ns + (0,23 ns/pF) CL
17 ns + (0,16 ns/pF) CL
83 ns + (0,55 ns/pF) CL
34 ns + (0,23 ns/pF) CL
27 ns + (0,16 ns/pF) CL
68 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
24 ns + (0,23 ns/pF) CL
17 ns + (0,16 ns/pF) CL
January 1995
5
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