74HCT125
Switching Characteristics
Symbol
t
PD
t
EN
t
DIS
t
t
Parameter
Propagation
Delay A
N
to Y
N
Enable Time
OE
N
to Y
N
DisableTime
OE
N
to Y
N
Transition Time
Test Conditions
V
CC
T
A
= +25°C
Min
—
Figure 1
C
L
= 50pF
4.5V
—
—
—
Typ
15
15
15
5
Max
25
28
25
12
-40°C to +85°C
Max
31
35
31
15
-40°C to +125°C
Max
38
42
38
18
Unit
ns
ns
ns
ns
Operating Characteristics
(@T
A
= +25°C, unless otherwise specified.)
Parameter
C
pd
C
I
Power Dissipation
Capacitance per Gate
Input Capacitance
Test Conditions
f = 1 MHz
V
I
= V
CC
– or GND
V
CC
= 5.5V
Typ
24
3.5
Unit
pF
pF
Parameter Measurement Information
TEST
t
PLZ
(see Notes D and E)
t
PZL
(see Notes D and F)
Condition
Vload
Vload
V
CC
4.5V
Inputs
V
I
1.5V
t
r
/t
f
≤6ns
V
M
3.0V
V
LOAD
2 X V
CC
C
L
50pF
R
L
2KΩ
V∆
10% of V
CC
Voltage Waveform
Pulse Duration
Voltage Waveform
Propagation Delay Times
Notes:
A. Includes test lead and test apparatus capacitance.
B. All pulses are supplied at pulse repetition rate
≤
1 MHz
C. The inputs are measured one at a time with one transition per measurement.
D. For the open drain device t
PLZ
and t
PZL
are the same as t
PD
E. t
PZL
is measured at V
M
.
D. t
PLZ
is measured at V
OL
+V
∆
F. A Thevenin equivalent load may be used in place of V
CC
X 2 and resistor divider
Figure 1 Load Circuit and Voltage Waveforms
74HCT125
Document number: DS35336 Rev. 3 - 2
4 of 8
January 2013
© Diodes Incorporated
DIODES [ DIODES INCORPORATED ]
