Datasheet

SN54F240, SN74F240
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDFS061A – D2932, MARCH 1987 – REVISED OCTOBER 1993
2–4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics (see Note 2)
PARAMETER
FROM
(
INPUT
)
TO
(
OUTPUT
)
V
CC
= 5 V,
C
L
= 50 pF,
R
L
= 500 Ω,
T
A
= 25°C
V
CC
= 4.5 V to 5.5 V,
C
L
= 50 pF,
R
L
= 500Ω,
T
A
= MIN to MAX
†
UNIT
(INPUT)
(OUTPUT)
′F240 SN54F240 SN74F240
MIN TYP MAX MIN MAX MIN MAX
t
PLH
Any A
Y
2.2 4.7 7 2.2 9 2.2 8
ns
t
PHL
An
y
A
Y
1.2 3.1 4.7 1.2 6 1.2 5.7
ns
t
PZH
OE
Y
1.2 3.1 5.3 1.2 6.7 1.2 6.1
ns
t
PZL
OE
Y
3.2 6.5 9 3.2 10.5 3.2 10
ns
t
PHZ
OE
Y
1.2 3.6 5.3 1.2 6.5 1.2 6.3
ns
t
PLZ
OE
Y
1.2 5.6 8 1.2 12.5 1.2 9.5
ns
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
NOTE 2: Load circuits and waveforms are shown in Section 1.