SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SDAS142C – JULY 1987 – REVISED AUGUST 1995
recommended operating conditions
SN54ALS244C
MIN NOM MAX
5.5
SN74ALS244C
MIN NOM MAX
UNIT
V
V
Supply voltage
4.5
2
5
4.5
2
5
5.5
V
V
CC
High-level input voltage
IH
†
‡
0.8
0.8
V
IL
Low-level input voltage
V
0.7
I
I
High-level output current
Low-level output current
Operating free-air temperature
–12
12
–15
24
mA
mA
°C
OH
OL
§
48
70
T
–55
125
0
A
†
‡
§
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)
SN54ALS244C
SN74ALS244C
PARAMETER
TEST CONDITIONS
I = –18 mA
UNIT
¶
¶
MIN TYP
MAX
MIN TYP
MAX
V
IK
V
V
= 4.5 V,
–1.5
–1.5
V
CC
I
I
I
I
I
I
I
I
= –0.4 mA
= –3 mA
V
–2
V
–2
OH
OH
OH
OH
OL
OL
OL
CC
2.4
CC
2.4
= 4.5 V to 5.5 V
CC
3.2
3.2
V
OH
V
= –12 mA
= –15 mA
= 12 mA
2
V
V
= 4.5 V
= 4.5 V
CC
2
0.25
0.4
0.25
0.35
0.35
0.4
0.5
0.5
20
V
OL
= 24 mA
V
CC
= 48 mA (-1 version)
= 2.7 V
I
I
I
I
I
I
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
V
V
20
–20
0.1
µA
µA
OZH
OZL
I
O
= 0.4 V
–20
0.1
20
O
V = 7 V
I
mA
µA
V = 2.7 V
I
20
IH
V = 0.4 V
I
–0.1
–112
18
–0.1
–112
17
mA
mA
IL
#
V
O
= 2.25 V
–20
–30
O
Outputs high
Outputs low
9
15
17
9
15
17
I
V
CC
= 5.5 V
25
24
mA
CC
Outputs disabled
29
27
¶
#
All typical values are at V
= 5 V, T = 25°C.
A
CC
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, I
.
OS
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
