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ISL81387 Datasheet(PDF) 12 Page - Intersil Corporation

Part # ISL81387
Description  ±15kV ESD Protected, 5V, Dual Protocol (RS-232/RS-485) Transceivers
PDF  27 Pages
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL81387 Datasheet(HTML) 12 Page - Intersil Corporation

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ISL81387, ISL41387
12
FN6201.4
June 9, 2014
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FIGURE 4A. TEST CIRCUIT
FIGURE 4B. MEASUREMENT POINTS
FIGURE 4. RS-485 RECEIVER PROPAGATION DELAY
FIGURE 5A. TEST CIRCUIT
FIGURE 5B. MEASUREMENT POINTS
FIGURE 5. RS-485 RECEIVER ENABLE AND DISABLE TIMES
FIGURE 6A. TEST CIRCUIT
FIGURE 6B. MEASUREMENT POINTS
FIGURE 6. RS-232 DRIVER PROPAGATION DELAY
FIGURE 7A. TEST CIRCUIT
FIGURE 7B. MEASUREMENT POINTS
FIGURE 7. RS-232 RECEIVER PROPAGATION DELAY
Test Circuits and Waveforms (Continued)
SIGNAL
GENERATOR
R
RA
RXEN
B
A
0V
15pF
VCC
RA
+1.5V
-1.5V
tPLH
0V
0V
VCC
0V
1.5V
1.5V
tPHL
B
1k
VCC
GND
SW
FOR SHDN TESTS, SWITCH ON AND RXEN L- H SIMULTANEOUSLY
PARAMETER
DEN
B
SW
tHZ
X
+1.5V
GND
tLZ
X
-1.5V
VCC
tZH
X
+1.5V
GND
tZL
X
-1.5V
VCC
tZH(SHDN)
0
+1.5V
GND
tZL(SHDN)
0
-1.5V
VCC
SIGNAL
GENERATOR
R
RA
RXEN
B
A
15pF
RA
3V
0V
1.5V
1.5V
VOH
0V
1.5V
VOH - 0.5V
tHZ
RA
VCC
VOL
1.5V
VOL + 0.5V
tLZ
RXEN
OUTPUT HIGH
OUTPUT LOW
tZL
tZH
tZL(SHDN)
tZH(SHDN)
ENABLED
D
DEN
DY, Z
VCC
SIGNAL
GENERATOR
RL
Y, Z
CL
OUT (Y, Z)
3V
0V
tDPHL
1.5V
1.5V
VO+
VO-
0V
0V
tDPLH
DY,Z
SKEW = |tDPHL - tDPLH|
R
RXEN
A, B
VCC
SIGNAL
GENERATOR
RA, RB
CL = 15pF
RA, RB
3V
0V
tRPHL
1.7V
1.3V
VOH
VOL
0.8V
2.4V
tRPLH
A, B
SKEW = |tRPHL - tRPLH|



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