SCES647A
–
SEPTEMBER 2005
–
REVISED JUNE 2011
PARAMETER MEASUREMENT INFORMATION
V
LOAD
From Output
Under Test
C
L
(see Note A)
R
L
R
L
S1
Open
GND
TEST
t
PZL
(see Notes E and F)
t
PLZ
(see Notes E and G)
t
PHZ
/t
PZH
S1
V
LOAD
V
LOAD
V
LOAD
LOAD CIRCUIT
INPUTS
V
CC
1.8 V
±
0.15 V
2.5 V
±
0.2 V
3.3 V
±
0.3 V
5 V
±
0.5 V
V
I
V
CC
V
CC
3V
V
CC
t
r
/t
f
≤2
ns
≤2
ns
≤2.5
ns
≤2.5
ns
V
M
V
CC
/2
V
CC
/2
1.5 V
V
CC
/2
V
LOAD
2 × V
CC
2 × V
CC
6V
2 × V
CC
C
L
15 pF
15 pF
15 pF
15 pF
R
L
1 MΩ
1 MΩ
1 MΩ
1 MΩ
V
∆
0.15 V
0.15 V
0.3 V
0.3 V
V
I
Timing Input
t
W
V
I
Input
V
M
VOLTAGE WAVEFORMS
PULSE DURATION
V
I
Input
t
PLH
Output
t
PHL
V
M
V
M
V
M
V
M
0V
t
PHL
V
OH
V
M
V
OL
t
PLH
V
OH
Output
V
M
V
OL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
Output
Waveform 2
S1 at GND
(see Note B)
Output
Waveform 1
S1 at V
LOAD
(see Note B)
t
PZH
V
M
V
M
0V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
V
I
V
M
t
PZL
V
M
V
M
0V
t
PLZ
V
LOAD
/2
V
OL
+ V
∆
t
PHZ
V
OH
– V
∆
V
OH
≈0
V
V
OL
Data Input
t
su
V
M
t
h
V
I
V
M
0V
V
M
0V
Output
Control
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
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 have the following characteristics: PRR
≤
10 MHz, Z
O
= 50
Ω
.
D. The outputs are measured one at a time, with one transition per measurement.
E. Because this device has open-drain outputs, t
PLZ
and t
PZL
are the same as t
PD
.
F. t
PZL
is measured at V
M
.
G. t
PLZ
is measured at V
OL
+ V
∆
.
H. All parameters and waveforms are not applicable to all devices.
Figure 1. Load Circuit and Voltage Waveforms
6
Copyright
©
2005–2011, Texas Instruments Incorporated
TI [ TEXAS INSTRUMENTS ]
