Datasheet
3 www.fairchildsemi.com
74VHC574
Absolute Maximum Ratings(Note 1) Recommended Operating
Conditions
(Note 2)
Note 1: Absolute Maximum Ratings are values beyond which the device
may be damaged or have its useful life impaired. The databook specifica-
tions should be met, without exception, to ensure that the system design is
reliable over its power supply, temperature, and output/input loading vari-
ables. Fairchild does not recommend operation outside databook specifica-
tions.
Note 2: Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
Noise Characteristics
Note 3: Parameter guaranteed by design.
Supply Voltage (V
CC
) 0.5V to 7.0V
DC Input Voltage (V
IN
) 0.5V to 7.0V
DC Output Voltage (V
OUT
) 0.5V to V
CC
0.5V
Input Diode Current (I
IK
) 20 mA
Output Diode Current
20 mA
DC Output Current (I
OUT
) 25 mA
DC V
CC
/GND Current (I
CC
) 75 mA
Storage Temperature (T
STG
) 65 C to 150 C
Lead Temperature (T
L
)
(Soldering, 10 seconds) 260
C
Supply Voltage (V
CC
)2.0V to 5.5V
Input Voltage (V
IN
)0V to 5.5V
Output Voltage (V
OUT
)0V to V
CC
Operating Temperature (T
OPR
) 40 C to 85 C
Input Rise and Fall Time (t
r
, t
f
)
V
CC
3.3V 0.3V 0 100 ns/V
V
CC
5.0V 0.5V 0 20 ns/V
Symbol Parameter
V
CC
(V)
T
A
25 CT
A
40 C to 85 C
Units Conditions
Min Typ Max Min Max
V
IH
HIGH Level 2.0 1.50 1.50
V
Input Voltage 3.0 5.5 0.7 V
CC
0.7 V
CC
V
IL
LOW Level 2.0 0.50 0.50
V
Input Voltage 3.0 5.5 0.3 V
CC
0.3 V
CC
V
OH
HIGH Level 2.0 1.9 2.0 1.9 V
IN
V
IH
I
OH
50 A
Output Voltage 3.0 2.9 3.0 2.9 V or V
IL
4.5 4.4 4.5 4.4
3.0 2.58 2.48
V
I
OH
4 mA
4.5 3.94 3.80 I
OH
8 mA
V
OL
LOW Level 2.0 0.0 0.1 0.1 V
IN
V
IH
I
OL
50 A
Output Voltage 3.0 0.0 0.1 0.1 V or V
IL
4.5 0.0 0.1 0.1
3.0 0.36 0.44
V
I
OL
4 mA
4.5 0.36 0.44 I
OL
8 mA
I
OZ
3-STATE 5.5 0.25 2.5 AV
IN
V
IH
or V
IL
Output Off-State Current V
OUT
V
CC
or GND
I
IN
Input Leakage 0 5.5 0.1 1.0 AV
IN
5.5V or GND
Current
I
CC
Quiescent Supply 5.5 4.0 40.0 AV
IN
V
CC
or GND
Current
Symbol Parameter
V
CC
(V)
T
A
25 C
Units Conditions
Typ Limits
V
OLP
(Note 3)
Quiet Output Maximum Dynamic V
OL
5.0 1.0 1.2 V C
L
50 pF
V
OLV
(Note 3)
Quiet Output Minimum Dynamic V
OL
5.0 0.8 1.0 V C
L
50 pF
V
IHD
(Note 3)
Minimum HIGH Level Dynamic Input Voltage 5.0 3.5 V C
L
50 pF
V
ILD
(Note 3)
Maximum LOW Level Dynamic Input Voltage 5.0 1.5 V C
L
50 pF