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Número de pieza
componentes Descripción
ISL3332 Ver la hoja de datos (PDF) - Intersil
Número de pieza
componentes Descripción
Fabricante
ISL3332
3.3V, ±15kV ESD Protected, Two Port, Dual Protocol (RS-232/RS-485) Transceivers
Intersil
ISL3332 Datasheet PDF : 26 Pages
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Test Circuits and Waveforms
ISL3332, ISL3333
V
CC
DE
D
Y
Y
D
Z
R
R
D
V
OD
R
V
OC
FIGURE 1. RS-485 DRIVER V
OD
AND V
OC
TEST CIRCUIT
DE
V
CC
D
Y
SIGNAL
GENERATOR
Y
D
Z
C
L
= 100pF
R
DIFF
C
L
= 100pF
D
Y
1.5V
OUT (Z)
t
PLH
50%
t
PHL
OUT (Y)
50%
t
DLH
DIFF OUT (Z - Y)
90%
0V
10%
t
R
3V
1.5V
0V
t
PHL
50%
V
OH
V
OL
t
PLH
50%
t
DHL
90%
0V
10%
t
F
V
OH
V
OL
+V
OD
-V
OD
FIGURE 2A. TEST CIRCUIT
SKEW = |t
PLH
(Y or Z) - t
PHL
(Z or Y)|
FIGURE 2B. MEASUREMENT POINTS
FIGURE 2. RS-485 DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES
11
FN6362.0
May 27, 2008
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