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74VHC244 Datasheet(PDF) 7 Page - Nexperia B.V. All rights reserved

Part No. 74VHC244
Description  Octal buffer/line driver; 3-state
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Maker  NEXPERIA [Nexperia B.V. All rights reserved]
Homepage  https://www.nexperia.com/
Logo NEXPERIA - Nexperia B.V. All rights reserved

74VHC244 Datasheet(HTML) 7 Page - Nexperia B.V. All rights reserved

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74VHC_VHCT244_1
Product data sheet
Rev. 01 — 17 August 2009
7 of 16
Nexperia
74VHC244; 74VHCT244
Octal buffer/line driver; 3-state
10. Dynamic characteristics
Table 7.
Dynamic characteristics
GND = 0 V. For test circuit see Figure 8.
Symbol Parameter
Conditions
25
°C
−40 °C to +85 °C −40 °C to +125 °C Unit
Min
Typ[1] Max
Min
Max
Min
Max
For type 74VHC244
tpd
propagation
delay
nAn to nYn; see Figure 6
[2]
VCC = 3.0 V to 3.6 V
CL = 15 pF
-
5.0
8.4
1.0
10.0
1.0
10.5
ns
CL = 50 pF
-
7.0
11.9
1.0
13.5
1.0
15.0
ns
VCC = 4.5 V to 5.5 V
CL = 15 pF
-
3.4
5.5
1.0
6.5
1.0
7.0
ns
CL = 50 pF
5.0
7.5
1.0
8.5
1.0
9.5
ns
ten
enable time
nOE to nYn; see Figure 7
[2]
VCC = 3.0 V to 3.6 V
CL = 15 pF
-
6.5
10.6
1.0
12.5
1.0
13.5
ns
CL = 50 pF
-
7.5
14.1
1.0
16.0
1.0
18.0
ns
VCC = 4.5 V to 5.5 V
CL = 15 pF
-
4.0
7.3
1.0
8.5
1.0
9.5
ns
CL = 50 pF
-
5.5
9.3
1.0
10.5
1.0
12.0
ns
tdis
disable time
nOE to nYn; see Figure 7
[2]
VCC = 3.0 V to 3.6 V
CL = 15 pF
-
5.5
9.7
1.0
11.0
1.0
12.5
ns
CL = 50 pF
-
10.0
14.0
1.0
16.0
1.0
17.5
ns
VCC = 4.5 V to 5.5 V
CL = 15 pF
-
4.8
7.2
1.0
8.5
1.0
9.0
ns
CL = 50 pF
-
7.0
9.2
1.0
10.5
1.0
11.5
ns
CPD
power
dissipation
capacitance
CL = 50 pF; fi = 1 MHz;
VI = GND to VCC
[3]
-10
-
-
-
-
-
pF
© Nexperia B.V. 2017. All rights reserved


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