SLOS580B – MAY 2008 – REVISED JULY 2008................................................................................................................................................................
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PARAMETER MEASUREMENT INFORMATION (continued)
A
3V
D
B
C
L
= 50 pF ±20%
Input
Generator
50
W
C
L
includes fixture and
Instrumentation
capacitance
RL = 110
W
±20%
V
O
S1
V
O
V
I
t
PZH
50%
t
PHZ
90%
50%
50%
0V
V
OH
0V
3V
DE
Figure 5. Driver High-Level Output Enable and Disable Time Test Circuit and Voltage Waveforms
3V
A
0V
D
B
DE
Input
Generator
C
L
= 50 pF ±20%
V
I
GND1
Generator: PRR = 500 kHz, 50% duty cycle,
t
r
<6ns, t
f
<6ns, Z
O
= 50
W
50
W
GND2
C
L
includes fixture and
Instrumentation capacitance
V
O
S1
R
L
= 110
W
±1%
V
O
V
I
t
PZL
50%
3V
50%
50%
0V
t
PLZ
10%
5V
V
OL
Figure 6. Driver Low-Level Output Enable and Disable Time Test Circuit and Voltage Waveform
IA
V
A
R
VA
VA+ V B
2
VIC
VB
IB
ID
B
VO
IO
Figure 7. Receiver Voltage and Current Definitions
A
Input
Generator
V
I
50
W
1.5 V
B
RE
R
V
O
C
L
= 15 pF
±20%
C
L
includes fixture and
instrumentation capacitance
VI
t
PLH
VO
50%
tr
3V
50%
t
PHL
50%
0V
VOH
90%
50%
10%
VOL
tf
Generator: PRR = 500 kHz, 50% duty cycle,
t
r
<6ns, t
f
<6ns, Z
O
= 50
W
Figure 8. Receiver Switching Test Circuit and Waveforms
6
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