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6.2.2 AC INPUT/OUTPUT TEST CONDITIONS
2.7
LHF08CTE
26
INPUT
1.35
TEST POINTS
1.35
OUTPUT
0.0
AC test inputs are driven at 2.7V for a Logic "1" and 0.0V for a Logic "0." Input timing begins, and output timing ends, at 1.35V.
Input rise and fall times (10% to 90%) <10 ns.
Figure 11. Transient Input/Output Reference Waveform for V CC =2.7V-3.6V
3.0
INPUT
1.5
TEST POINTS
1.5
OUTPUT
0.0
AC test inputs are driven at 3.0V for a Logic "1" and 0.0V for a Logic "0". Input timing begins, and output timing ends, at 1.5V.
Input rise and fall times (10% to 90%) <10ns.
Figure 12. Transient Input/Output Reference Waveform for V CC =3.3V±0.3V and V CC =5V±0.25V
(High Speed Testing Configuration)
2.4
0.45
INPUT
2.0
0.8
TEST POINTS
2.0
0.8
OUTPUT
AC test inputs are driven at V OH (2.4 V TTL ) for a Logic "1" and V OL (0.45 V TTL ) for a Logic "0". Input timing begins at V IH
(2.0 V TTL ) and V IL (0.8 V TTL ). Output timing ends at V IH and V IL . Input rise and fall times (10% to 90%) <10ns.
Figure 13. Transient Input/Output Reference Waveform for V CC =5V±0.5V
(Standard Testing Configuration)
Test Configuration Capacitance Loading Value
Test Configuration
C L (pF)
1.3V
1N914
V CC =3.3V±0.3V, 2.7V-3.6V
V CC =5V±0.25V
V CC =5V±0.5V
50
30
100
R L =3.3k ?
DEVICE
UNDER
TEST
C L Includes Jig
C L
OUT
Capacitance
Figure 14. Transient Equivalent Testing
Load Circuit
Rev. 1.3
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