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74AHC139 Fiches technique(PDF) 7 Page - NXP Semiconductors

No de pièce 74AHC139
Description  Dual 2-to-4 line decoder/demultiplexer
Download  14 Pages
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Fabricant  NXP [NXP Semiconductors]
Site Internet  http://www.nxp.com
Logo NXP - NXP Semiconductors

74AHC139 Fiches technique(HTML) 7 Page - NXP Semiconductors

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74AHC_AHCT139_2
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 — 9 May 2008
7 of 14
NXP Semiconductors
74AHC139; 74AHCT139
Dual 2-to-4 line decoder/demultiplexer
10. Dynamic characteristics
[1]
Typical values are measured at nominal supply voltage (VCC = 3.3 V and VCC = 5.0 V).
[2]
tpd is the same as tPLH and tPHL.
[3]
CPD is used to determine the dynamic power dissipation (PD in µW).
PD =CPD × VCC2 × fi × N+ Σ(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;
Σ(CL × VCC2 × fo) = sum of the outputs.
Table 7.
Dynamic characteristics
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 7.
Symbol Parameter
Conditions
25
°C
−40 °C to +85 °C −40 °C to +125 °C Unit
Min
Typ[1] Max
Min
Max
Min
Max
74AHC139
tpd
propagation
delay
nAn to nYn; see Figure 5
[2]
VCC = 3.0 V to 3.6 V
CL = 15 pF
-
5.5
11.0
1.0
13.0
1.0
14.0
ns
CL = 50 pF
-
7.9
14.5
1.0
16.5
1.0
18.5
ns
VCC = 4.5 V to 5.5 V
CL = 15 pF
-
3.9
7.2
1.0
8.5
1.0
9.0
ns
CL = 50 pF
-
5.6
9.2
1.0
10.5
1.0
11.5
ns
nEtonYn; see Figure 6
[2]
VCC = 3.0 V to 3.6 V
CL = 15 pF
-
4.8
9.2
1.0
11.0
1.0
11.5
ns
CL = 50 pF
-
6.9
12.7
1.0
14.5
1.0
16.0
ns
VCC = 4.5 V to 5.5 V
CL = 15 pF
-
3.4
6.3
1.0
7.5
1.0
8.0
ns
CL = 50 pF
-
4.9
8.3
1.0
9.5
1.0
10.5
ns
CPD
power
dissipation
capacitance
fi = 1 MHz; VI = GND to VCC
[3]
-26
-
-
-
-
-
pF
74AHCT139; VCC = 4.5 V to 5.5 V
tpd
propagation
delay
nAn to nYn; see Figure 5
[2]
CL = 15 pF
-
4.7
7.2
1.0
8.5
1.0
9.0
ns
CL = 50 pF
-
6.5
9.2
1.0
10.5
1.0
11.5
ns
nEtonYn; see Figure 6
[2]
CL = 15 pF
-
3.6
6.3
1.0
7.5
1.0
8.0
ns
CL = 50 pF
-
5.2
8.3
1.0
9.5
1.0
10.5
ns
CPD
power
dissipation
capacitance
fi = 1 MHz; VI = GND to VCC
[3]
-23
-
-
-
-
-
pF


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