Datasheet

SN74AHC244-EP
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCLS486A – MAY 2003 – REVISED JUNE 2003
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range,
V
CC
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM TO LOAD
T
A
= 25°C
MIN
MAX
UNIT
PARAMETER
(INPUT) (OUTPUT) CAPACITANCE
MIN TYP MAX
MIN
MAX
UNIT
t
PLH
A
Y
C
L
=15
p
F
3.9 5.5 1 6.5
ns
t
PHL
A
Y
C
L
=
15
pF
3.9 5.5 1 6.5
ns
t
PZH
OE
Y
C
L
=15
p
F
4.7 7.3 1 8.5
ns
t
PZL
OE
Y
C
L
=
15
pF
4.7 7.3 1 8.5
ns
t
PHZ
OE
Y
C
L
=15
p
F
5 7.2 1 8.5
ns
t
PLZ
OE
Y
C
L
=
15
pF
5 7.2 1 8.5
ns
t
PLH
A
Y
C
L
=50
p
F
5.4 7.5 1 8.5
ns
t
PHL
A
Y
C
L
=
50
pF
5.4 7.5 1 8.5
ns
t
PZH
OE
Y
C
L
=50
p
F
6.2 9.3 1 10.5
ns
t
PZL
OE
Y
C
L
=
50
pF
6.2 9.3 1 10.5
ns
t
PHZ
OE
Y
C
L
=50
p
F
6.7 9.2 1 10.5
ns
t
PLZ
OE
Y
C
L
=
50
pF
6.7 9.2 1 10.5
ns
noise characteristics, V
CC
= 5 V, C
L
= 50 pF, T
A
= 25°C (see Note 4)
PARAMETER MIN TYP MAX UNIT
V
OL(P)
Quiet output, maximum dynamic V
OL
0.5 V
V
OL(V)
Quiet output, minimum dynamic V
OL
–0.2 V
V
OH(V)
Quiet output, minimum dynamic V
OH
4.8 V
V
IH(D)
High-level dynamic input voltage 3.5 V
V
IL(D)
Low-level dynamic input voltage 1.5 V
NOTE 4: Characteristics are for surface-mount packages only.
operating characteristics, V
CC
= 5 V, T
A
= 25°C
PARAMETER TEST CONDITIONS TYP UNIT
C
pd
Power dissipation capacitance No load, f = 1 MHz 8.6 pF