SN54HC244, SN74HC244
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SCLS130D – DECEMBER 1982 – REVISED AUGUST 2003
switching characteristics over recommended operating free-air temperature range, C
L
= 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC
2V
tpd
A
Y
4.5 V
6V
2V
ten
OE
Y
4.5 V
6V
2V
tdis
OE
Y
4.5 V
6V
2V
tt
Y
4.5 V
6V
TA = 25°C
MIN
TYP
MAX
40
13
11
75
15
13
75
15
13
28
8
6
115
23
20
150
30
26
150
30
26
60
12
10
SN54HC244
MIN
MAX
170
34
29
225
45
38
225
45
38
90
18
15
SN74HC244
MIN
MAX
145
29
25
190
38
32
190
38
32
75
15
13
ns
ns
ns
ns
UNIT
switching characteristics over recommended operating free-air temperature range, C
L
= 150 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC
2V
tpd
A
Y
4.5 V
6V
2V
ten
OE
Y
4.5 V
6V
2V
tt
Y
4.5 V
6V
TA = 25°C
MIN
TYP
MAX
56
18
15
100
20
17
45
17
13
165
33
28
200
40
34
210
42
36
SN54HC244
MIN
MAX
245
49
42
300
60
51
315
63
53
SN74HC244
MIN
MAX
210
42
35
250
50
43
265
53
45
ns
ns
ns
UNIT
operating characteristics, T
A
= 25°C
PARAMETER
Cpd
Power dissipation capacitance per buffer/driver
TEST CONDITIONS
No load
TYP
35
UNIT
pF
4
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
