Datasheet


 
SCLS555 − JUNE 2004
www.ti.com
9
PARAMETER MEASUREMENT INFORMATION
(OPEN-COLLECTOR OUTPUT)
t
PHL
t
PLH
V
CC1
0 V
Input
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
NOTES: A. C
L
includes probe and jig capacitance.
B. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, Z
O
= 50 Ω, t
r
≤ 3 ns,
t
f
≤
C. The outputs are measured one at a time, with one input transition per measurement.
D. t
PHL
and t
PLH
are the same as t
pd
.
From Output
Under Test
C
L
(see Note A)
Test
Point
LOAD CIRCUIT FOR
OPEN-COLLECTOR OUTPUTS
50% V
CC1
50% V
CC1
R
L
= 500 Ω
Output
V
CC1
V
OL
≈V
CC1
50% V
CC1
V
OL
+ 0.3 V
Figure 2. Load Circuit and Voltage Waveforms