參數(shù)資料
型號： 74LVC14APWDH
廠商： NXP SEMICONDUCTORS
元件分類： 通用總線功能
英文描述： Hex inverting Schmitt-trigger with 5V tolerant input
中文描述： LVC/LCX/Z SERIES, HEX 1-INPUT INVERT GATE, PDSO14
文件頁數(shù)： 6/10頁
文件大?。?/td> 95K
代理商： 74LVC14APWDH
Philips Semiconductors
Product specification
74LVC14A
Hex inverting Schmitt-trigger with 5V
tolerant input
1998 Apr 28
6
AC CHARACTERISTICS
GND = 0 V; t
r
= t
f
2.5 ns; C
L
= 50 pF; R
L
= 500 ; T
amb
= –40 C to +85 C
LIMITS
SYMBOL
PARAMETER
WAVEFORM
V
CC
= 3.3V
±
0.3V
MIN
TYP
1
V
CC
= 2.7V
TYP
V
CC
= 1.2V
TYP
UNIT
MAX
MIN
MAX
t
PHL
/
t
PLH
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 V
CC
= 3.3V and T
amb
= 25
°
C.
AC WAVEFORMS
V
M
= 1.5 V at V
CC
V
M
= 0.5 V
CC
at V
CC
< 2.7 V
V
OL
and V
OH
are the typical output voltage drop that occur with the
output load.
2.7 V
V
M
nA INPUT
nY OUTPUT
V
M
t
PLH
t
PHL
GND
V
I
V
OL
V
OH
SV00395
Figure 1. Input (nA) to output (nY) propagation delays.
TEST CIRCUIT
PULSE
GENERATOR
V
I
R
T
D.U.T.
V
O
C
L
50pF
S
1
2 x V
CC
Open
GND
500
500
V
CC
V
I
2.7V
V
CC
2.7V
2.7V – 3.6V
Test
S
1
GND
t
PLZ
/t
PZL
t
PHZ
/t
PZH
2 x V
CC
t
PLH
/t
PHL
Open
SY00003
V
CC
Figure 2. Load circuitry for switching times.
APPLICATION INFORMATION
All values given are typical unless otherwise specified.
1
T
0.8
Note to Figure 7: f
1
RC
0.5
1.0
1.5
2.0
average
ICC
(mA)
VCC (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 I
CC
for LVC Schmitt-trigger devices;
linear change of V
i
between 0.8 V to 2.0 V.
SV00433
R
C
Figure 4. Relaxation oscillator using the LVC14.
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