Datasheet

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SLLS047L − FEBRUARY 1989 − REVISED MARCH 2004
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
T1IN or T2IN T1OUT or T2OUT
C
L
= 10 pF
(see Note B)
TEST CIRCUIT
≤10 ns≤10 ns
Input
Output
t
PHL
t
PLH
V
OL
V
OH
0 V
3 V
10%
90%
50%
5 µs
WAVEFORMS
90%
50%
10%
R
L
90%
10%
90%
10%
t
TLH
t
THL
SR +
0.8 (V
OH
–V
OL
)
t
TLH
or
0.8 (V
OL
–V
OH
)
t
THL
NOTES: A. The pulse generator has the following characteristics: Z
O
= 50 Ω, duty cycle ≤ 50%.
B. C
L
includes probe and jig capacitance.
Pulse
Generator
(see Note A)
EIA-232 Output
Figure 2. Driver Test Circuit and Waveforms for t
PHL
and t
PLH
Measurements (5-µs Input)
EIA-232 Output
−3 V
3 V
−3 V
3 V
3 kΩ
10%
1.5 V
90%
WAVEFORMS
20 µs
1.5 V
90%
10%
V
OH
V
OL
t
TLH
t
THL
≤10 ns ≤10 ns
TEST CIRCUIT
C
L
= 2.5 nF
Pulse
Generator
(see Note A)
Input
Output
SR +
6V
t
THL
or t
TLH
NOTE A: The pulse generator has the following characteristics: Z
O
= 50 Ω, duty cycle ≤ 50%.
Figure 3. Test Circuit and Waveforms for t
THL
and t
TLH
Measurements (20-µs Input)