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SLLS771B – NOVEMBER 2006 – REVISED MARCH 2007
PARAMETER MEASUREMENT INFORMATION (continued)
Y
3V
D
DE
Z
3V
S1 V
O
1.5 V
V
I
R
L
= 110
W
±1
%
1.5 V
0.5 V
0V
V
OH
Input
Generator
C
L
= 50 pF
t
PZH
V
O
2.5 V
V
I
50
W
±20
%
»
0V
t
PHZ
Generator: PRR = 500 kHz,
50% Duty Cycle, t
r
< 6 ns,
t
f
< 6 ns, Z
O
= 50
W
C
L
Includes Fixture and
Instrumentation Capacitance
Figure 5. Driver High-Level Output Enable and Disable Time Test Circuit and Voltage Waveforms
3V
R
L
= 110
W
Y
0V
3V
1.5 V
1.5 V
0V
D
DE
Z
S1
±1
%
V
O
C
L
= 50 pF
±20
%
V
I
t
PZL
t
PLZ
Input
Generator
5V
0.5 V
V
I
50
W
V
O
2.5 V
V
OL
Generator: PRR = 500 kHz,
50% Duty Cycle, t
r
< 6 ns,
t
f
< 6 ns, Z
O
= 50
W
C
L
Includes Fixture and
Instrumentation Capacitance
Figure 6. Driver Low-Level Output Enable and Disable Time Test Circuit and Voltage Waveforms
I
A
V
A
V
A
+ V
B
2
V
IC
V
B
V
ID
I
B
A
R
B
V
O
I
O
Figure 7. Receiver Voltage and Current Definitions
A
Input
Generator
R
V
I
50 Ω
1.5 V
B
RE
Generator: PRR = 500 kHz,
50% Duty Cycle,t
r
< 6 ns,
t
f
< 6 ns, Z
O
= 50
W
V
O
V
I
C
L
= 15 pF
±20%
V
O
t
PLH
1.5 V
10%
1.5 V
1.5 V
3V
0V
t
PHL
90% 90%
1.5 V
10%
V
OH
V
OL
C
L
Includes Fixture and
Instrumentation Capacitance
t
r
t
f
Figure 8. Receiver Switching Test Circuit and Voltage Waveforms
7
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