74ACT1284SC

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74ACT1284
AC Electrical Characteristics
Note 7: Open Drain
Note 8: This parameter is guaranteed but not tested, characterized only.
Note: Pulse Generator for all pulses; Rate 1.0 MHz; A
O
50; t
f
2.5 ns, t
r
2.5 ns.
Capacitance
Symbol Parameter
T
A
= +25°CT
A
= 0°C to +70°CT
A
= 40°C to +85°C
Units
Figure
Number
V
CC
= 4.7V 5.5V V
CC
= 4.7V 5.5V V
CC
= 4.7V 5.5V
Min Max Min Max Min Max
t
PHL
A
1
- A
7
to B
1
- B
7
2.0 20.0 2.0 20.0 2.0 24.0 ns Figure 1
t
PLH
A
1
- A
7
to B
1
- B
7
2.0 20.0 2.0 20.0 2.0 24.0 ns Figure 2
t
PHL
B
1
- B
4
to A
1
- A
4
2.0 20.0 2.0 20.0 2.0 24.0 ns Figure 3
t
PLH
B
1
- B
4
to A
1
- A
4
2.0 20.0 2.0 20.0 2.0 24.0 ns Figure 3
t
pEnable
Output Enable Time
2.0 20.0 2.0 20.0 2.0 24.0 ns Figure 2
HD to B
1
- B
7
t
pDisable
Output Disable Time
2.0 20.0 2.0 20.0 2.0 24.0 ns Figure 2
HD to B
1
- B
7
t
SKEW
Output Slew Rate
0.05 0.40 0.05 0.40 0.05 0.40 V/ns
Figures
1, 2
t
PLH
B
1
- B
7
t
PHL
t
r
, t
f
t
RISE
and t
FALL
120 120 120 ns
Figure 4
B
1
- B
7
(Note 7) (Note 8)
Symbol Parameter Typ Units Conditions
C
IN
Input Capacitance 4.0 pF V
CC
= OPEN (HD, DIR A
5
- A
7
)
C
I/O
I/O Pin Capacitance 12.0 pF V
CC
= 5.0V
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74ACT1284
AC Loading and Waveforms
t
SLEW
measures between 10% to 90% on the t
PHL
Transition
t
SLEW
measures between 10% to 90% on the t
PLH
Transition
FIGURE 1. Port A to B Propagation Delay Waveforms
FIGURE 2. B Output Test Load and Waveforms
FIGURE 3. B to A Direction Test Load and Waveforms for Outputs A
1
- A
4
FIGURE 4. A to B Direction Test Load and Waveforms for Open Drain B
1
- B
7
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74ACT1284
Physical Dimensions inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
Package Number M20B
20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
Package Number MSA20

74ACT1284SC

Mfr. #:
Manufacturer:
ON Semiconductor / Fairchild
Description:
Bus Transceivers IEEE 1284 Trans
Lifecycle:
New from this manufacturer.
Delivery:
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