ꢀ ꢁꢂ ꢃꢄ ꢅ ꢆ ꢇꢈꢉ ꢊ ꢋꢉ ꢌ
ꢇ ꢍꢎꢏꢈ ꢍꢇꢆꢐ ꢑꢒ ꢋ ꢌ ꢏꢅꢓ ꢆ ꢔꢒ ꢆ ꢅꢕ ꢀ ꢀ ꢎꢓ ꢆ ꢄꢖ
SCDS042J − DECEMBER 1997 − REVISED JULY 2004
PARAMETER MEASUREMENT INFORMATION
2 × V
CC
TEST
S1
S1
t
/t
Open
Open
R
PLH PHL
L
From Output
Under Test
t
/t
2 × V
CC
GND
PLZ PZL
GND
t
/t
PHZ PZH
C
L
R
L
(see Note A)
C
L
V
∆
R
V
CC
L
2.5 V 0.2 V
3.3 V 0.3 V
500 Ω
500 Ω
0.15 V
0.3 V
30 pF
50 pF
LOAD CIRCUIT
V
CC
Timing Input
V
CC
/2
0 V
t
w
t
t
h
su
V
CC
V
CC
V
CC
/2
V
CC
/2
Input
V
CC
/2
V
CC
/2
Data Input
0 V
0 V
VOLTAGE WAVEFORMS
PULSE DURATION
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
V
V
CC
CC
Output
Control
V
CC
/2
V
CC
/2
V
CC
/2
V
/2
Input
CC
0 V
V
0 V
t
t
t
PHL
t
t
PLH
PZL
PLZ
+ V
Output
Waveform 1
V
V
OH
CC
V
V
/2
/2
V
CC
/2
V
CC
/2
/2
Output
CC
S1 at 2 × V
(see Note B)
CC
V
OL
∆
V
OL
OL
t
t
t
PHL
PLH
/2
PZH
PHZ
− V
Output
Waveform 2
S1 at GND
V
V
V
OH
OH
V
OH
∆
V
CC
V
CC
CC
Output
≈0 V
(see Note B)
OL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
NOTES: A.
C includes probe and jig capacitance.
L
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 = 50 Ω, t ≤ 2 ns, t ≤ 2 ns.
O
r
f
D. The outputs are measured one at a time, with one transition per measurement.
E.
F.
G.
t
t
t
and t
and t
and t
PHL
are the same as t
.
dis
PLZ
PZL
PLH
PHZ
PZH
are the same as t
.
en
are the same as t .
pd
H. All parameters and waveforms are not applicable to all devices.
Figure 1. Load Circuit and Voltage Waveforms
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
