54FCT245 NSC [National Semiconductor], 54FCT245 Datasheet - Page 4

• Manufacturer Part Number: 54FCT245
• Description: Octal Bidirectional Transceiver with TRI-STATE Outputs
• Manufacturer: NSC [National Semiconductor]

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C
C
AC Electrical Characteristics
Capacitance
Note 4: C
AC Loading
*
IN
I/O
Includes jig and probe capacitance
t
t
t
t
t
t
Symbol
PLH
PHL
PZH
PZL
PHZ
PLZ
(Note 4)
Symbol
I/O
is measured at frequency f = 1 MHz, per MIL-STD-883B, Method 3012.
FIGURE 1. Standard AC Test Load
Propagation Delay
Data to Outputs
Output Enable
Time
Output Disable
Time
Parameter
Input Capacitance
I/O Capacitance
Parameter
DS100950-6
Min
1.5
1.5
1.5
1.5
1.5
1.5
T
A
V
= −55˚C to +125˚C
4
CC
C
Max
10.0
12.0
L
= 4.5V–5.5V
54FCT
= 50 pF
Amplitude
3.0V
FIGURE 3. Test Input Signal Requirements
FIGURE 2. Test Input Signal Levels
Max
10.0
10.0
10.0
10.0
7.5
7.5
Rep. Rate
Units
pF
pF
1 MHz
500 ns
V
V
CC
CC
t
w
Units
ns
ns
ns
= 0V (OE , T/R)
= 5.0V (A
Conditions
T
2.5 ns
A
t
= 25˚C
r
n
, B
n
)
Figure
Figure
Figure
2.5 ns
Fig.
DS100950-7
No.
4
5
5
t
f