74LV125 Datasheet

  • 74LV125

  • Quad buffer/line driver (3-State)

  • 121.19KB

  • Philips

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Philips Semiconductors
Product specification
Quad buffer/line driver (3-State)
74LV125
AC WAVEFORMS
V
M
= 1.5 V at V
CC
鈮?/div>
2.7 V and
鈮?/div>
3.6 V;
V
M
= 0.5
V
CC
at V
CC
<
2.7 V and
鈮?/div>
4.5 V.
V
OL
and V
OH
are the typical output voltage drop that occur with the
output load.
V
X
= V
OL
+ 0.3 V at V
CC
鈮?/div>
2.7 V and
鈮?/div>
3.6 V;
V
X
= V
OL
+ 0.1
V
CC
at V
CC
< 2.7 V and
鈮?/div>
4.5 V.
V
Y
= V
OH
鈥?0.3 V at V
CC
鈮?/div>
2.7 V and
鈮?/div>
3.6 V;
V
Y
= V
OH
鈥?0.1
鈰?/div>
V
CC
at V
CC
< 2.7 V and
鈮?/div>
4.5 V.
V
l
nA INPUT
GND
t PHL
V OH
nY OUTPUT
V OL
VM
t PLH
VM
TEST CIRCUIT
V
CC
2 * V
CC
Open
GND
V
O
D.U.T.
R
T
C
L
50 pF
R
L
= 1k
R
L
= 1k
V
I
PULSE
GENERATOR
Test Circuit for Outputs
DEFINITIONS
R
L
= Load resistor
C
L
= Load capacitance includes jig and probe capacitiance.
R
T
= Termination resistance should be equal to Z
OUT
of pulse generators.
SWITCH POSITION
SV00459
TEST
t
PLH/
t
PHL
t
PLZ/
t
PZL
S
1
Open
2 * V
CC
GND
V
CC
< 2.7V
2.7鈥?.6V
w
4.5V
V
I
V
CC
2.7V
V
CC
Figure 1. Input (nA) to output (nY) propagation delays
and output transition times.
VI
nOE Input
GND
tPLZ
VCC
OUTPUT
LOW-to-OFF
OFF-to-LOW
VOL
tPHZ
VOH
OUTPUT
HIGH-to-OFF
OFF-to-HIGH
GND
outputs
enabled
VY
VM
outputs
disabled
outputs
enabled
tPZL
VM
VX
tPZH
VM
t
PHZ/
t
PZH
SV00896
Figure 3. Load circuitry for switching times.
SV00458
Figure 2. 3-state enable and disable times.
1998 Apr 28
6

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