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74ABT245 Scheda tecnica(PDF) 6 Page - Fairchild Semiconductor

Il numero della parte 74ABT245
Spiegazioni elettronici  Octal Bi-Directional Transceiver with 3-STATE Outputs
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Produttore elettronici  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

74ABT245 Scheda tecnica(HTML) 6 Page - Fairchild Semiconductor

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©1991 Fairchild Semiconductor Corporation
www.fairchildsemi.com
74ABT245 Rev. 1.4
6
Extended AC Electrical Characteristics
SOIC package.
Notes:
6. 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.).
7. 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.
8. 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.
9. 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 to 5.5V,
CL = 50pF,
8 Outputs Switching(6)
TA = –40°C to +85°C,
VCC = 4.5V to 5.5V,
CL = 250pF,
1 Output Switching(7)
TA = –40°C to +85°C,
VCC = 4.5V to 5.5V,
CL = 250pF,
8 Outputs Switching(8)
Units
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
fTOGGLE Max Toggle
Frequency
100
MHz
tPLH
Propagation
Delay
1.5
5.0
1.5
6.0
2.5
8.5
ns
tPHL
Data to Outputs
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
9.5
ns
tPZL
1.5
6.5
2.5
7.5
2.5
11.0
tPHZ
Output Disable
Time
1.0
6.5
(9)
(9)
ns
tPLZ
1.0
5.6


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