4585B データシートの表示（PDF） - NXP Semiconductors.
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4585B Datasheet PDF : 16 Pages
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NXP Semiconductors
HEF4585B
4-bit magnitude comparator
10. Dynamic characteristics
Table 7. Dynamic characteristics
VSS = 0 V; Tamb = 25 C; for test circuit see Figure 5 unless otherwise specified.
Symbol Parameter
Conditions[1][2] VDD
Extrapolation formula[3]
tPHL
HIGH to LOW
An, Bn to Qn;
5V
133 ns + (0.55 ns/pF)CL
propagation delay see Figure 4
10 V
54 ns + (0.23 ns/pF)CL
15 V
37 ns + (0.16 ns/pF)CL
In to Qn;
see Figure 4
5V
10 V
83 ns + (0.55 ns/pF)CL
34 ns + (0.23 ns/pF)CL
15 V
22 ns + (0.16 ns/pF)CL
tPLH
LOW to HIGH
An, Bn to Qn;
5V
123 ns + (0.55 ns/pF)CL
propagation delay see Figure 4
10 V
49 ns + (0.23 ns/pF)CL
15 V
37 ns + (0.16 ns/pF)CL
In to Qn;
see Figure 4
5V
10 V
93 ns + (0.55 ns/pF)CL
39 ns + (0.23 ns/pF)CL
15 V
27 ns + (0.16 ns/pF)CL
tt
transition time
see Figure 4
5V
10 ns + (1.00 ns/pF)CL
10 V
9 ns + (0.42 ns/pF)CL
15 V
6 ns + (0.28 ns/pF)CL
Min Typ Max Unit
-
160 320 ns
-
65 130 ns
-
45 90 ns
-
110 220 ns
-
45 90 ns
-
30 60 ns
-
150 300 ns
-
60 120 ns
-
45 90 ns
-
120 240 ns
-
50 100 ns
-
35 70 ns
-
60 120 ns
-
30 60 ns
-
20 40 ns
[1] Qn is QA>B, QA<B or QA=B
[2] In is IA>B, IA<B or IA=B
[3] The typical values of the propagation delay and transition times are calculated from the extrapolation formulas shown (CL in pF).
Table 8. Dynamic power dissipation PD
PD can be calculated from the formulas shown. VSS = 0 V; CL = 50 pF; tr = tf 20 ns; Tamb = 25 C.
Symbol Parameter
VDD Typical formula for PD (W)
where:
PD
dynamic power dissipation 5 V PD = 1250 fi + (fo CL) VDD2 fi = input frequency in MHz,
10 V PD = 5500 fi + (fo CL) VDD2 fo = output frequency in MHz,
15 V PD = 15000 fi + (fo CL) VDD2
CL = output load capacitance in pF,
VDD = supply voltage in V,
(fo CL) = sum of the outputs.
HEF4585B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 6 — 21 November 2011
© NXP B.V. 2011. All rights reserved.
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