Datasheet
SCDS159B − OCTOBER 2003 − REVISED MARCH 2004
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
V
OH
V
OL
C
L
(see Note A)
TEST CIRCUIT
S1
2 × V
CC
Open
GND
R
L
R
L
Output
Waveform 1
S1 at 2 × V
CC
(see Note B)
Output
Waveform 2
S1 at Open
(see Note B)
t
PZL
t
PZH
t
PLZ
t
PHZ
0 V
V
OL
+ V
∆
V
OH
− V
∆
0 V
V
CC
V
CC
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
NOTES: A. C
L
includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, Z
O
= 50 Ω, t
r
≤ 2.5 ns, t
f
≤ 2.5 ns.
D. The outputs are measured one at a time, with one transition per measurement.
E. t
PLZ
and t
PHZ
are the same as t
dis
.
F. t
PZL
and t
PZH
are the same as t
en
.
50 Ω
V
G1
V
CC
DUT
50 Ω
V
IN
50 Ω
V
G2
50 Ω
V
I
TEST
R
L
S1 V
∆
C
L
V
CC
V
I
t
PHZ
/t
PZH
t
PLZ
/t
PZL
2.5 V ± 0.2 V
3.3 V ± 0.3 V
2.5 V ± 0.2 V
3.3 V ± 0.3 V
2 × V
CC
2 × V
CC
Open
Open
500 Ω
500 Ω
500 Ω
500 Ω
GND
GND
3.6 V
5.5 V
30 pF
50 pF
30 pF
50 pF
0.15 V
0.3 V
0.15 V
0.3 V
Output
Control
(V
IN
)
Input Generator
Input Generator
V
CC
/2 V
CC
/2
V
CC
/2
V
CC
/2
V
O
Figure 2. Test Circuit and Voltage Waveforms