74LVC240A PHILIPS [NXP Semiconductors], 74LVC240A Datasheet - Page 6

• Manufacturer Part Number: 74LVC240A
• Description: Octal buffer/line driver with 5-volt tolerant inputs/outputs; inverting 3-State
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
AC WAVEFORMS
V
V
output load.
V
V
Waveform 1. Inputs (1A
propagation delays.
Waveform 2. 3-State enable and disable times.
1998 May 20
M
OL
X
Y
Octal buffer/line driver with 5-volt
tolerant inputs/outputs; inverting (3-State)
= V
= V
= 1.5V at V
and V
HIGH-to-OFF
OFF-to-HIGH
LOW-to-OFF
OFF-to-LOW
Q
Q
V
INPUTS
GND
V
OUTPUTS
V
nOE INPUT
n
n
I
OH
OL
OL
OH
OUTPUT
OUTPUT
+ 0.3V at V
–0.3V at V
OH
GND
GND
V
V
V
CC
OH
OL
V
are the typical output voltage drop that occur with the
I
CC
w 2.7V; V
V
enabled
outputs
CC
M
CC
t
PHL
V
w 2.7V; V
w 2.7V; V
M
t
t
PLZ
PHZ
n
, 2A
M
= 0.5 V
V
V
n
X
M
V
) to outputs (1Y
Y
Y
X
= V
= V
CC
disabled
outputs
OH
OL
at V
– 0.1 V
+ 0.1 V
t
CC
PZL
t
PZH
t
t 2.7V.
PLH
n
CC
CC
, 2Y
V
M
V
at V
at V
SV00613
M
enabled
n
outputs
SW00221
)
CC
CC
t 2.7V
t 2.7V
6
TEST CIRCUIT
DEFINITIONS
R
GENERATOR
SWITCH POSITION
t
t
t
PHZ
T
PLH
PLZ
TEST
PULSE
= Termination resistance should be equal to Z
Waveform 3. Load circuitry for switching times.
of pulse generators.
/t
/t
/t
PHL
PZL
PZH
Test Circuit for 3-State Outputs
SWITCH
2<V
Open
GND
V
IN
CC
R
T
D.U.T.
V
CC
2.7 – 3.6V
t 2.7V
V
V
OUT
CC
50pF
74LVC240A
Product specification
2.7V
V
V
CC
I
OUT
S
500
500
1
SW00233
2<V
GND
Open
CC