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74ABT244 Folha de dados(PDF) 6 Page - Fairchild Semiconductor

Nome de Peças 74ABT244
Descrição Electrónicos  Octal Buffer/Line Driver with 3-STATE Outputs
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Fabricante Electrônico  FAIRCHILD [Fairchild Semiconductor]
Página de início  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

74ABT244 Folha de dados(HTML) 6 Page - Fairchild Semiconductor

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©1992 Fairchild Semiconductor Corporation
www.fairchildsemi.com
74ABT244 Rev. 1.4
6
Extended AC Electrical Characteristics
SOIC package.
Notes:
8. This specification is guaranteed but not tested. The limits apply to propagation delays for all paths described
switching in phase (i.e., all LOW-to-HIGH, HIGH-to-LOW, etc.).
9. This specification is guaranteed but not tested. The limits represent propagation delay with 250pF load capacitors
in place of the 50pF load capacitors in the standard AC load. This specification pertains to single output switching
only.
10. This specification is guaranteed but not tested. The limits represent propagation delays for all paths described
switching in phase (i.e., all LOW-to-HIGH, HIGH-to-LOW, etc.) with 250pF load capacitors in place of the 50pF load
capacitors in the standard AC load.
11. The 3-STATE delays are dominated by the RC network (500
Ω, 250pF) on the output and have been excluded from
the datasheet.
Symbol
Parameter
TA–40°C to +85°C,
VCC = 4.5V–5.5V,
CL = 50pF,
8 Outputs
Switching(8)
TA = –40°C to +85°C,
VCC = 4.5V–5.5V,
CL = 250pF,
1 Output
Switching(9)
TA = –40°C to +85°C,
VCC = 4.5V–5.5V,
CL = 250pF,
8 Outputs
Switching(10)
Units
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
fTOGGLE Max Toggle
Frequency
100
MHz
tPLH
Propagation Delay,
Data to Outputs
1.5
5.0
1.5
6.0
2.5
8.5
ns
tPHL
1.5
5.0
1.5
6.0
2.5
8.5
tPZH
Output Enable Time
1.5
6.5
2.5
7.5
2.5
10.0
ns
tPZL
1.5
6.5
2.5
7.5
2.5
12.0
tPHZ
Output Disable Time
1.0
5.6
(11)
(11)
ns
tPLZ
1.0
5.6


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