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74ABT245 Datasheet(PDF) 4 Page - Fairchild Semiconductor

No. de pieza 74ABT245
Descripción Electrónicos  Octal Bi-Directional Transceiver with 3-STATE Outputs
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Fabricante Electrónico  FAIRCHILD [Fairchild Semiconductor]
Página de inicio  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

74ABT245 Datasheet(HTML) 4 Page - Fairchild Semiconductor

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4
DC Electrical Characteristics
(SOIC package)
Note 4: Max number of outputs defined as (n). n-1 data inputs are driven 0V to 3V. One output at LOW. Guaranteed, but not tested.
Note 5: Max number of data inputs (n) switching. n-1 inputs switching 0V to 3V. Input-under-test switching: 3V to threshold (VILD), 0V to threshold (VIHD).
Guaranteed, but not tested.
Note 6: Max number of outputs defined as (n). n
 1 data inputs are driven 0V to 3V. One output HIGH. Guaranteed, but not tested.
AC Electrical Characteristics
(SOIC and SSOP package)
Extended AC Electrical Characteristics
(SOIC package)
Note 7: 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.).
Note 8: This specification is guaranteed but not tested. The limits represent propagation delay with 250 pF load capacitors in place of the 50 pF load capac-
itors in the standard AC load. This specification pertains to single output switching only.
Note 9: 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 250 pF load capacitors in place of the 50 pF load capacitors in the standard AC load.
Note 10: The 3-STATE delays are dominated by the RC network (500
:, 250 pF) on the output and have been excluded from the datasheet.
Symbol
Parameter
Min
Typ
Max
Units
VCC
Conditions
CL 50 pF, RL 500:
VOLP
Quiet Output Maximum Dynamic VOL
0.7
1.0
V
5.0
TA 25qC (Note 4)
VOLV
Quiet Output Minimum Dynamic VOL
1.3
1.0
V
5.0
TA 25qC (Note 4)
VOHV
Minimum HIGH Level Dynamic Output Voltage
2.7
3.1
V
5.0
TA 25qC (Note 6)
VIHD
Minimum HIGH Level Dynamic Input Voltage
2.0
1.7
V
5.0
TA 25qC (Note 5)
VILD
Maximum LOW Level Dynamic Input Voltage
0.9
0.6
V
5.0
TA 25qC (Note 5)
TA 25qCTA 55qC to 125qCTA 40qC to 85qC
Symbol
Parameter
VCC 5V
VCC 4.5V–5.5V
VCC 4.5V–5.5V
Units
CL 50 pF
CL 50 pF
CL 50 pF
Min
Typ
Max
Min
Max
Min
Max
tPLH
Propagation Delay
1.0
2.1
3.6
1.0
4.8
1.0
3.6
ns
tPHL
Data to Outputs
1.0
2.4
3.6
1.0
4.8
1.0
3.6
tPZH
Output Enable
1.5
3.2
6.0
1.0
6.7
1.5
6.0
ns
tPZL
Time
1.5
3.7
6.0
2.0
7.5
1.5
6.0
tPHZ
Output Disable
1.0
3.6
6.1
1.7
7.4
1.0
6.1
ns
tPLZ
Time
1.0
3.3
5.6
1.7
6.5
1.0
5.6
Symbol
Parameter
40qC to 85qC
TA 40qC to 85qC
TA 40qC to 85qC
Units
VCC 4.5V–5.5V
VCC 4.5V–5.5V
VCC 4.5V–5.5V
CL 50 pF
CL 250 pF
CL 250 pF
8 Outputs Switching
1 Output Switching
8 Outputs Switching
(Note 7)
(Note 8)
(Note 9)
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
(Note 10)
(Note 10)
ns
tPLZ
1.0
5.6


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