MC74VHCT125A
www.onsemi.com
3
MAXIMUM RATINGS
Symbol Parameter Value Unit
V
CC
DC Supply Voltage –0.5 to +7.0 V
V
in
DC Input Voltage –0.5 to +7.0 V
V
out
DC Output Voltage Output in 3−State
High or Low State
–0.5 to +7.0
–0.5 to V
CC
+0.5
V
I
IK
Input Diode Current −20 mA
I
OK
Output Diode Current (V
OUT
< GND; V
OUT
> V
CC
) $20 mA
I
out
DC Output Current, per Pin $25 mA
I
CC
DC Supply Current, V
CC
and GND Pins $75 mA
P
D
Power Dissipation in Still Air, SOIC Package†
TSSOP Package†
500
450
mW
T
stg
Storage Temperature –65 to +150 °C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of
these limits are exceeded, device functionality should not be assumed, damage may occur and
reliability may be affected.
†Derating — SOIC Package: – 7 mW/°C from 65° to 125°C
TSSOP Package: − 6.1 mW/°C from 65° to 125°C
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Min Max Unit
V
CC
DC Supply Voltage 2.0 5.5 V
V
in
DC Input Voltage 0 5.5 V
V
out
DC Output Voltage Output in 3−State
High or Low State
0
0
5.5
V
CC
V
T
A
Operating Temperature −55 +125 °C
t
r
, t
f
Input Rise and Fall Time V
CC
= 5.0 V $0.5 V 0 20 ns/V
Functional operation above the stresses listed in the Recommended Operating Ranges is not
implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may
affect device reliability.
DC ELECTRICAL CHARACTERISTICS
Symbol Parameter Test Conditions
V
CC
(V)
T
A
= 25°C T
A
≤ 85°C T
A
≤ 125°C
Unit
Min Typ Max Min Max Min Max
V
IH
Minimum High−Level Input
Voltage
3.0
4.5
5.5
1.2
2.0
2.0
1.2
2.0
2.0
1.2
2.0
2.0
V
V
IL
Maximum Low−Level Input
Voltage
3.0
4.5
5.5
0.53
0.8
0.8
0.53
0.8
0.8
0.53
0.8
0.8
V
V
OH
Minimum High−Level Output
Voltage
V
IN
= V
IH
or V
IL
V
IN
= V
IH
or V
IL
I
OH
= − 50 mA
3.0
4.5
2.9
4.4
3.0
4.5
2.9
4.4
2.9
4.4
V
V
IN
= V
IH
or V
IL
I
OH
= −4.0 mA
I
OH
= −8.0 mA
3.0
4.5
2.58
3.94
2.48
3.80
2.34
3.66
V
OL
Maximum Low−Level Output
Voltage
V
IN
= V
IH
or V
IL
V
IN
= V
IH
or V
IL
I
OL
= 50 mA
3.0
4.5
0.0
0.0
0.1
0.1
0.1
0.1
0.1
0.1
V
V
IN
= V
IH
or V
IL
I
OL
= 4.0 mA
I
OL
= 8.0 mA
3.0
4.5
0.36
0.36
0.44
0.44
0.52
0.52
I
IN
Maximum Input Leakage Current V
IN
= 5.5 V or GND 0 to
5.5
$0.1 $0.1 $0.1
mA
I
CC
Maximum Quiescent Supply
Current
V
IN
= V
CC
or GND 5.5 2.0 20 40
mA
I
CCT
Quiescent Supply Current Input: V
IN
= 3.4 V 5.5 1.35 1.50 1.65 mA
I
OZ
Maximum Three−State Leakage
Current
V
IN
= V
IH
or V
IL
-
V
OUT
= V
CC
or
GND
5.5 $0.25 $2.5 $2.5
mA
I
OPD
Output Leakage Current V
OUT
= 5.5 V 0.0 0.5 5.0 10
mA
This device contains protection
circuitry to guard against damage
due to high static voltages or electric
fields. However, precautions must
be taken to avoid applications of any
voltage higher than maximum rated
voltages to this high−impedance cir-
cuit. For proper operation, V
in
and
V
out
should be constrained to the
range GND v (V
in
or V
out
) v V
CC
.
Unused inputs must always be
tied to an appropriate logic voltage
level (e.g., either GND or V
CC
).
Unused outputs must be left open.
