Datasheet
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ELECTRICAL CHARACTERISTICS
SWITCHING CHARACTERISTICS
SN74ALVCH244
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCES112F – JULY 1997 – REVISED AUGUST 2004
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS V
CC
MIN TYP
(1)
MAX UNIT
I
OH
= -100 µA 1.65 V to 3.6 V V
CC
- 0.2
I
OH
= -4 mA 1.65 V 1.2
I
OH
= -6 mA 2.3 V 2
V
OH
2.3 V 1.7 V
I
OH
= -12 mA 2.7 V 2.2
3 V 2.4
I
OH
= -24 mA 3 V 2
I
OL
= 100 µA 1.65 V to 3.6 V 0.2
I
OL
= 4 mA 1.65 V 0.45
I
OL
= 6 mA 2.3 V 0.4
V
OL
V
2.3 V 0.7
I
OL
= 12 mA
2.7 V 0.4
I
OL
= 24 mA 3 V 0.55
I
I
V
I
= V
CC
or GND 3.6 V ±5 µA
V
I
= 0.58 V 1.65 V
(2)
V
I
= 1.07 V 1.65 V
(2)
V
I
= 0.7 V 2.3 V 45
I
I(hold)
V
I
= 1.7 V 2.3 V -45 µA
V
I
= 0.8 V 3 V 75
V
I
= 2 V 3 V -75
V
I
= 0 to 3.6 V
(3)
3.6 V ±500
I
OZ
V
O
= V
CC
or GND 3.6 V ±10 µA
I
CC
V
I
= V
CC
or GND, I
O
= 0 3.6 V 10 µA
∆I
CC
One input at V
CC
- 0.6 V, Other inputs at V
CC
or GND 3 V to 3.6 V 750 µA
Control inputs 4.5
C
i
V
I
= V
CC
or GND 3.3 V pF
Data inputs 6
C
o
Outputs V
O
= V
CC
or GND 3.3 V 8 pF
(1) All typical values are at V
CC
= 3.3 V, T
A
= 25°C.
(2) This information was not available at the time of publication.
(3) This is the bus-hold maximum dynamic current. It is the minimum overdrive current required to switch the input from one state to
another.
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1)
V
CC
= 2.5 V V
CC
= 3.3 V
V
CC
= 1.8 V V
CC
= 2.7 V
FROM TO
± 0.2 V ± 0.3 V
PARAMETER UNIT
(INPUT) (OUTPUT)
TYP MIN MAX MIN MAX MIN MAX
t
pd
A Y
(1)
1 3.1 3.1 1.1 2.8 ns
t
en
OE Y
(1)
1.5 5.4 5.3 1.5 4.5 ns
t
dis
OE Y
(1)
1 4.1 4.4 1.7 4.2 ns
(1) This information was not available at the time of publication.
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