Data Sheet

74VHCT244A Octal Buffer/Line Driver with 3-STATE Outputs
©1997 Fairchild Semiconductor Corporation www.fairchildsemi.com
74VHCT244A Rev. 1.3 4
DC Electrical Characteristics
Noise Characteristics
Note:
6. Parameter guaranteed by design.
Symbol Parameter V
CC
(V) Conditions
T
A
= 25°C
T
A
= –40°C
to +85°C
UnitsMin. Typ. Max. Min. Max.
V
IH
HIGH Level Input
Voltage
4.5 2.0 2.0 V
5.5 2.0 2.0
V
IL
LOW Level Input
Voltage
4.5 0.8 0.8 V
5.5 0.8 0.8
V
OH
HIGH Level Output
Voltage
4.5 V
IN
= V
IH
or V
IL
I
OH
= –50µA 4.40 4.50 4.40 V
I
OH
= –8mA 3.94 3.80
V
OL
LOW Level Output
Voltage
4.5 V
IN
= V
IH
or V
IL
I
OL
= 50µA 0.0 0.1 0.1 V
I
OL
= 8mA 0.36 0.44
I
OZ
3-STATE Output
OFF-STATE Current
5.5 V
IN
= V
IH
or V
IL
,
V
OUT
= V
CC
or GND
±0.25 ±2.5 µA
I
IN
Input Leakage
Current
0–5.5 V
IN
= 5.5V or GND ±0.1 ±1.0 µA
I
CC
Quiescent Supply
Current
5.5 V
IN
= V
CC
or GND 4.0 40.0 µA
I
CCT
Maximum I
CC
/Input 5.5 V
IN
= 3.4V, Other
Input = V
CC
or GND
1.35 1.50 mA
I
OFF
Output Leakage
Current (Power
Down State)
0.0 V
OUT
= 5.5V 0.5 5.0 µA
Symbol Parameter V
CC
(V) Conditions
T
A
= 25°C
UnitsTyp. Limits
V
OLP
(6)
Quiet Output Maximum Dynamic
V
OL
5.0 C
L
= 50pF 0.9 1.1 V
V
OLV
(6)
Quiet Output Minimum
Dynamic V
OL
5.0 C
L
= 50pF –0.9 –1.1 V
V
IHD
(6)
Minimum HIGH Level Dynamic
Input Voltage
5.0 C
L
= 50pF 2.0 V
V
ILD
(6)
Maximum HIGH Level Dynamic
Input Voltage
5.0 C
L
= 50pF 0.8 V