Datasheet

SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SDAS142C – JULY 1987 – REVISED AUGUST 1995
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions
SN54ALS244C SN74ALS244C
UNIT
MIN NOM MAX MIN NOM MAX
UNIT
V
CC
Supply voltage 4.5 5 5.5 4.5 5 5.5 V
V
IH
High-level input voltage 2 2 V
V
IL
Low level in
p
ut voltage
0.8
†
0.8
V
V
IL
Lo
w-
le
v
el
inp
u
t
v
oltage
0.7
‡
V
I
OH
High-level output current –12 –15 mA
I
OL
Low level out
p
ut current
12 24
mA
I
OL
Lo
w-
le
v
el
o
u
tp
u
t
c
u
rrent
48
§
mA
T
A
Operating free-air temperature –55 125 0 70 °C
†
Applies over temperature range –55°C to 70°C
‡
Applies over temperature range 70°C to 125°C
§
Applies only to the -1 version and only if V
CC
is between 4.75 V and 5.25 V
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54ALS244C SN74ALS244C
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP
¶
MAX MIN TYP
¶
MAX
UNIT
V
IK
V
CC
= 4.5 V, I
I
= –18 mA –1.5 –1.5 V
V
CC
=45Vto55V
I
OH
= –0.4 mA V
CC
–2 V
CC
–2
V
OH
V
CC
=
4
.
5
V
to
5
.
5
V
I
OH
= –3 mA 2.4 3.2 2.4 3.2
V
V
OH
V
CC
=45V
I
OH
= –12 mA 2
V
V
CC
=
4
.
5
V
I
OH
= –15 mA 2
I
OL
= 12 mA 0.25 0.4 0.25 0.4
V
OL
V
CC
= 4.5 V
I
OL
= 24 mA 0.35 0.5
V
I
OL
= 48 mA (-1 version) 0.35 0.5
I
OZH
V
CC
= 5.5 V, V
O
= 2.7 V 20 20 µA
I
OZL
V
CC
= 5.5 V, V
O
= 0.4 V –20 –20 µA
I
I
V
CC
= 5.5 V, V
I
= 7 V 0.1 0.1 mA
I
IH
V
CC
= 5.5 V, V
I
= 2.7 V 20 20 µA
I
IL
V
CC
= 5.5 V, V
I
= 0.4 V –0.1 –0.1 mA
I
O
#
V
CC
= 5.5 V, V
O
= 2.25 V –20 –112 –30 –112 mA
Outputs high 9 18 9 17
I
CC
V
CC
= 5.5 V
Outputs low 15 25 15 24
mA
Outputs disabled 17 29 17 27
¶
All typical values are at V
CC
= 5 V, T
A
= 25°C.
#
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, I
OS
.