SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SDAS142C – JULY 1987 – REVISED AUGUST 1995
recommended operating conditions
SN54ALS244C
MIN
VCC
VIH
VIL
IOH
IOL
Supply voltage
High-level input voltage
Low-level
Low level input voltage
High-level output current
Low level output current
Low-level
– 55
4.5
2
0.8†
0.7‡
– 12
12
125
0
NOM
5
MAX
5.5
SN74ALS244C
MIN
4.5
2
0.8
– 15
24
48§
70
NOM
5
MAX
5.5
UNIT
V
V
V
mA
mA
°C
TA
Operating free-air temperature
† 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 VCC is between 4.75 V and 5.25 V
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
VIK
VCC = 4.5 V,
VCC = 4 5 V to 5 5 V
4.5
5.5
VOH
VCC = 4 5 V
4.5
TEST CONDITIONS
II = – 18 mA
IOH = – 0.4 mA
IOH = – 3 mA
IOH = – 12 mA
IOH = – 15 mA
IOL = 12 mA
IOL = 24 mA
IOL = 48 mA (-1 version)
VO = 2.7 V
VO = 0.4 V
VI = 7 V
VI = 2.7 V
VI = 0.4 V
VO = 2.25 V
Outputs high
ICC
VCC = 5.5 V
Outputs low
Outputs disabled
– 20
9
15
17
20
– 20
0.1
20
– 0.1
– 112
18
25
29
– 30
9
15
17
SN54ALS244C
MIN TYP¶
MAX
– 1.5
VCC – 2
2.4
2
2
0.25
0.4
0.25
0.35
0.35
0.4
0.5
0.5
20
– 20
0.1
20
– 0.1
– 112
17
24
27
mA
µA
µA
mA
µA
mA
mA
V
3.2
VCC – 2
2.4
3.2
SN74ALS244C
MIN TYP¶
MAX
– 1.5
UNIT
V
V
VOL
IOZH
IOZL
II
IIH
IIL
IO#
VCC = 4.5 V
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
¶ All typical values are at VCC = 5 V, TA = 25°C.
# The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
3
TI [ TEXAS INSTRUMENTS ]
