Datasheet
SLLS185D − DECEMBER 1994 − REVISED JULY 2001
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
Pulse
Generator
(see Note B)
C
L
(see Note A)
R
L
3 V
0
Input
t
PHL
t
PLH
90%
50%
10%
50%
10%
90%
t
THL
t
TLH
V
OH
V
OL
TEST CIRCUIT VOLTAGE WAVEFORMS
Input
Output
V
SS
V
CC
V
DD
NOTES: A. C
L
includes probe and jig capacitance.
B. The pulse generator has the following characteristics: t
w
= 25 µs, PRR = 20 kHz, Z
O
= 50 Ω, t
r
= t
f
< 50 ns.
1.5 V
1.5 V
Figure 3. Driver Test Circuit and Voltage Waveforms
Figure 4. Receiver Test Circuit for I
OS
V
I
V
DD
V
CC
V
SS
−I
OS
Figure 5. Receiver Test Circuit
for V
IT
, V
OH
, and V
OL
V
IT
,
V
I
V
DD
V
CC
V
SS
I
OL
V
OH
−I
OH
V
OL
TEST CIRCUIT
NOTES: A. C
L
includes probe and jig capacitance.
B. The pulse generator has the following characteristics: t
w
= 25 µs, PRR = 20 kHz, Z
O
= 50 Ω, t
r
= t
f
< 50 ns.
Pulse
Generator
(see Note B)
C
L
(see Note A)
R
L
Input
V
SS
V
CC
V
DD
VOLTAGE WAVEFORMS
4 V
0
Input
t
PHL
t
PLH
90%
50%
10%
50%
10%
90%
t
THL
t
TLH
V
OH
V
OL
Output
50%
50%
Figure 6. Receiver Propagation and Transition Times