Datasheet

SN54HCT244, SN74HCT244
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SCLS175D – MARCH 1984 – REVISED AUGUST 2003
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range, C
L
= 150 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
V
CC
T
A
= 25°C SN54HCT244 SN74HCT244
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
t
pd
A
Y
4.5 V 21 45 68 56
ns
t
pd
A
Y
5.5 V 18 40 61 51
ns
t
en
OE
Y
4.5 V 25 52 79 65
ns
t
en
OE
Y
5.5 V 22 47 71 59
ns
t
t
Y
4.5 V 17 42 63 53
ns
t
t
Y
5.5 V 14 38 57 48
ns
operating characteristics, T
A
= 25°C
PARAMETER TEST CONDITIONS TYP UNIT
C
pd
Power dissipation capacitance per buffer/driver No load 40 pF