SN54HCT244, SN74HCT244
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SCLS175D – MARCH 1984 – REVISED AUGUST 2003
switching characteristics over recommended operating free-air temperature range, C = 150 pF
L
(unless otherwise noted) (see Figure 1)
T
A
= 25°C
TYP
21
SN54HCT244 SN74HCT244
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
V
UNIT
ns
CC
MIN
MAX
45
MIN
MAX
68
MIN
MAX
56
4.5 V
5.5 V
4.5 V
5.5 V
4.5 V
5.5 V
t
pd
t
en
t
t
A
Y
Y
Y
18
40
61
51
25
52
79
65
ns
OE
22
47
71
59
17
42
63
53
ns
14
38
57
48
operating characteristics, T = 25°C
A
PARAMETER
TEST CONDITIONS
TYP
UNIT
C
Power dissipation capacitance per buffer/driver
No load
40
pF
pd
4
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