HEF4585B Просмотр технического описания (PDF) - Philips Electronics
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HEF4585B Datasheet PDF : 6 Pages
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Philips Semiconductors
4-bit magnitude comparator
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; CL = 50 pF; input transition times ≤ 20 ns
VDD
V
SYMBOL MIN. TYP. MAX.
Propagation delays
An, Bn → On
HIGH to LOW
LOW to HIGH
In → On
HIGH to LOW
LOW to HIGH
Output transition times
HIGH to LOW
LOW to HIGH
5
10
tPHL
15
5
10
tPLH
15
5
10
tPHL
15
5
10
tPLH
15
5
10
tTHL
15
5
10
tTLH
15
160 320 ns
65 130 ns
45 90 ns
150 300 ns
60 120 ns
45 90 ns
110 220 ns
45 90 ns
30 60 ns
120 240 ns
50 100 ns
35 70 ns
60 120 ns
30 60 ns
20 40 ns
60 120 ns
30 60 ns
20 40 ns
Product specification
HEF4585B
MSI
TYPICAL EXTRAPOLATION
FORMULA
133 ns + (0,55 ns/pF) CL
54 ns + (0,23 ns/pF) CL
37 ns + (0,16 ns/pF) CL
123 ns + (0,55 ns/pF) CL
49 ns + (0,23 ns/pF) CL
37 ns + (0,16 ns/pF) CL
83 ns + (0,55 ns/pF) CL
34 ns + (0,23 ns/pF) CL
22 ns + (0,16 ns/pF) CL
93 ns + (0,55 ns/pF) CL
39 ns + (0,23 ns/pF) CL
27 ns + (0,16 ns/pF) CL
10 ns + (1,0 ns/pF) CL
9 ns + (0,42 ns/pF) CL
6 ns + (0,28 ns/pF) CL
10 ns + (1,0 ns/pF) CL
9 ns + (0,42 ns/pF) CL
6 ns + (0,28 ns/pF) CL
Dynamic power
dissipation per
package (P)
VDD
V
TYPICAL FORMULA FOR P (µW)
5
1250 fi + ∑ (foCL) × VDD2
10
5500 fi + ∑ (foCL) × VDD2
15
15 000 fi + ∑ (foCL) × VDD2
APPLICATION INFORMATION
Some examples of applications for the HEF4585B are:
• Process controllers.
• Servo-motor control.
where
fi = input freq. (MHz)
fo = output freq. (MHz)
CL = load capacitance (pF)
∑ (foCL) = sum of outputs
VDD = supply voltage (V)
January 1995
5
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