Datasheet

From Output
Under Test
LOAD CIRCUIT FOR ENABLE/DISABLE TIME MEASUREMENT −
SWITCH-TYPE SDIOs
1 MW
t
PLH
t
PHL
V
CCI
0 V
V
CCO
/2
V
OH
V
OL
V
CCI
0 V
V
CCI
/2 V
CCI
/2
t
w
Input
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
PULSE DURATION
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
Output
Input
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: PRRv10 MHz, Z
O
= 50 Ω, dv/dt ≥ 1 V/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
.
G. t
PLH
and t
PHL
are the same as t
pd
.
H. V
CCI
is the V
CC
associated with the input port.
I. V
CCO
is the V
CC
associated with the output port.
J. All parameters and waveforms are not applicable to all devices.
1 MW
15 pF
15 pF
DATA RATE, PULSE DURATION, PROPAGATION DELAY,
OUTPUT RISE AND FALL TIME MEASUREMENT USING
A PUSH-PULL DRIVER
V
CCO
V
CCI
DUT
IN
OUT
1 MW
15 pF
DATA RATE, PULSE DURATION, PROPAGATION DELAY,
OUTPUT RISE AND FALL TIME MEASUREMENT USING
AN OPEN-DRAIN DRIVER
V
CCO
V
CCI
DUT
IN
OUT
V
CCI
/2 V
CCI
/2
0.9 y V
CCO
V
CCO
/2
t
r
0.1 y V
CCO
t
f
t
en
t
dis
Input
Output
OE
TWL1200
SCES786A –JUNE 2009–REVISED NOVEMBER 2009 www.ti.com
PARAMETER MEASUREMENT INFORMATION (continued)
Figure 24. Auto-Direction Control Load Circuit and Voltage Waveform
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