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74LVC14A Folha de dados(PDF) 6 Page - NXP Semiconductors

Nome de Peças 74LVC14A
Descrição Electrónicos  Hex inverting Schmitt-trigger with 5V tolerant input
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Fabricante Electrônico  PHILIPS [NXP Semiconductors]
Página de início  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74LVC14A Folha de dados(HTML) 6 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
74LVC14A
Hex inverting Schmitt-trigger with 5V
tolerant input
1998 Apr 28
6
AC CHARACTERISTICS
GND = 0 V; tr = tf v 2.5 ns; CL = 50 pF; RL = 500W; Tamb = –40_C to +85_C
LIMITS
SYMBOL
PARAMETER
WAVEFORM
VCC = 3.3V ±0.3V
VCC = 2.7V
VCC = 1.2V
UNIT
MIN
TYP1
MAX
MIN
TYP
MAX
TYP
tPHL/
tPLH
Propagation delay
nA to nY
Figure 1, 2
1.5
4.5
6.4
1.5
5.0
7.5
18
ns
NOTE:
1. These typical values are at VCC = 3.3V and Tamb = 25°C.
AC WAVEFORMS
VM = 1.5 V at VCC w 2.7 V
VM = 0.5 S VCC at VCC < 2.7 V
VOL and VOH are the typical output voltage drop that occur with the
output load.
VM
nA INPUT
nY OUTPUT
VM
tPLH
tPHL
GND
VI
VOL
VOH
SV00395
Figure 1. Input (nA) to output (nY) propagation delays.
TEST CIRCUIT
PULSE
GENERATOR
VI
RT
D.U.T.
VO
CL
50pF
S1
2 x VCC
Open
GND
500
500
VCC
VI
t 2.7V
VCC
2.7V – 3.6V
2.7V
Test
S1
GND
tPLZ/tPZL
2 x VCC
tPHZ/tPZH
tPLH/tPHL
Open
SY00003
VCC
Figure 2. Load circuitry for switching times.
APPLICATION INFORMATION
All values given are typical unless otherwise specified.
Note to Figure 7: f
+ 1
T
[
1
0.8
RC
0.5
1.0
1.5
2.0
average
ICC
(mA)
V CC(V)
1.8
2.1
2.4
1.5
3.3
3.0
2.7
3.6
negative-going
edge
positive-going
edge
SV00445
Figure 3. Average ICC for LVC Schmitt-trigger devices;
linear change of Vi between 0.8 V to 2.0 V.
SV00433
R
C
Figure 4. Relaxation oscillator using the LVC14.


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