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74HC258D 数据表(PDF) 6 Page - NXP Semiconductors

部件名 74HC258D
功能描述  Quad 2-input multiplexer; 3-state; inverting
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

74HC258D 数据表(HTML) 6 Page - NXP Semiconductors

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74HC258_4
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 04 — 14 April 2008
6 of 14
NXP Semiconductors
74HC258
Quad 2-input multiplexer; 3-state; inverting
10. Dynamic characteristics
[1]
tpd is the same as tPHL and tPLH.
[2]
ten is the same as tPZH and tPZL.
[3]
tdis is the same as tPHZ and tPLZ.
[4]
tt is the same as tTHL and tTLH.
[5]
CPD is used to determine the dynamic power dissipation (PD in µW).
PD =CPD × VCC2 × fi × N+ ∑(CL × VCC2 × fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
CL = output load capacitance in pF;
VCC = supply voltage in V;
N = number of inputs switching;
∑(CL × VCC2 × fo) = sum of outputs.
Table 7.
Dynamic characteristics
GND = 0 V; for test circuit see Figure 8.
Symbol
Parameter
Conditions
25
°C
−40 °C to +125 °C Unit
Min
Typ
Max
Max
(85
°C)
Max
(125
°C)
tpd
propagation delay
nl0, nI1to nY; see Figure 6
[1]
VCC = 2.0 V
-
30
95
120
145
ns
VCC = 4.5 V
-
11
19
24
29
ns
VCC = 6.0 V
-
9
16
20
25
ns
VCC = 5.0 V; CL = 15 pF
-
9
-
-
-
ns
S to nY; see Figure 6
VCC = 2.0 V
-
47
140
175
210
ns
VCC = 4.5 V
-
17
28
35
42
ns
VCC = 6.0 V
-
14
24
30
36
ns
VCC = 5.0 V; CL = 15 pF
-
14
-
-
-
ns
ten
enable time
OE to nY; see Figure 7
[2]
VCC = 2.0 V
-
39
140
175
210
ns
VCC = 4.5 V
-
14
28
35
42
ns
VCC = 6.0 V
-
11
24
30
36
ns
tdis
disable time
OE to nY; see Figure 7
[3]
VCC = 2.0 V
-
55
150
190
225
ns
VCC = 4.5 V
-
20
30
38
45
ns
VCC = 6.0 V
-
16
26
33
38
ns
tt
transition time
see Figure 6
[4]
VCC = 2.0 V
-
14
60
75
90
ns
VCC = 4.5 V
-
5
12
15
18
ns
VCC = 6.0 V
-
4
10
13
15
ns
CPD
power dissipation
capacitance
per multiplexer;
VI = GND to VCC
[5]
-55-
-
-
pF


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