74LVC125A PHILIPS [NXP Semiconductors], 74LVC125A Datasheet - Page 6
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74LVC125A
Manufacturer Part Number
74LVC125A
Description
Quad buffer/line driver with 5-volt tolerant inputs/outputs 3-State
Manufacturer
PHILIPS [NXP Semiconductors]
Datasheet
1.74LVC125A.pdf
(10 pages)
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Philips Semiconductors
AC WAVEFORMS
V
V
V
output load.
V
V
V
V
1998 Apr 28
M
M
OL
X
X
Y
Y
Quad buffer/line driver with 5-volt
tolerant inputs/outputs (3-state)
= V
= V
= V
= V
= 1.5 V at V
= 0.5 S V
and V
Figure 1. Input (nA) to output (nY) propagation delays.
OFF-to-HIGH
HIGH-to-OFF
LOW-to-OFF
OFF-to-LOW
OL
OL
OH
OH
nOE Input
OUTPUT
OUTPUT
V OH
+ 0.3 V at V
+ 0.1 V at V
V OL
– 0.3 V at V
– 0.1 V at V
OH
nY OUTPUT
GND
GND
Figure 2. 3-state enable and disable times.
V CC
CC
nA INPUT
V OH
V I
are the typical output voltage drop that occur with the
V OL
CC
at V
GND
w 2.7 V;
V
CC
enabled
outputs
l
CC
CC
CC
CC
V M
< 2.7 V
t PLZ
t PHZ
> 2.7 V
< 2.7 V
2.7 V
2.7 V
V M
V X
V Y
V M
t PHL
disabled
outputs
t PZL
t PZH
V M
SV00459
V M
SV00458
t PLH
outputs
enabled
6
TEST CIRCUIT
DEFINITIONS
R
C
R
GENERATOR
SWITCH POSITION
t
t
t
PHZ
L
L
T
PLH
PLZ
TEST
PULSE
= Load resistor
= Load capacitance includes jig and probe capacitance
= Termination resistance should be equal to Z
of pulse generators.
/t
/t
/t
Figure 3. Load circuitry for switching times.
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
C
74LVC125A
L
Product specification
2.7V
V
V
CC
IN
OUT
S
1
R
R
L
L
=500
=500
2<V
GND
Open
SW00047
CC