參數(shù)資料
型號: ISL81387
廠商: Intersil Corporation
英文描述: ±15kV ESD Protected, Dual Protocol (RS-232/RS-485) Transceivers(±15kV ESD保護(hù),雙協(xié)議(RS-232/RS-485)收發(fā)器)
中文描述: ± 15kV的ESD保護(hù),雙協(xié)議(RS-232/RS-485)收發(fā)器(± 15kV的ESD保護(hù),雙協(xié)議(RS-232/RS-485)收發(fā)器)
文件頁數(shù): 12/27頁
文件大?。?/td> 1092K
代理商: ISL81387
12
FN6201.1
December 20, 2005
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
R
A
RXEN
B
A
0V
15pF
V
CC
R
A
+1.5V
-1.5V
t
PLH
0V
0V
V
CC
0V
1.5V
1.5V
t
PHL
B
1k
V
CC
GND
SW
FOR SHDN TESTS, SWITCH ON AND RXEN L- H SIMULTANEOUSLY
PARAMETER
DEN
t
HZ
X
t
LZ
X
t
ZH
X
t
ZL
X
t
ZH(SHDN)
0
t
ZL(SHDN)
0
B
SW
GND
V
CC
GND
V
CC
GND
V
CC
+1.5V
-1.5V
+1.5V
-1.5V
+1.5V
-1.5V
SIGNAL
GENERATOR
R
R
A
RXEN
B
A
15pF
R
A
3V
0V
1.5V
1.5V
V
OH
0V
1.5V
V
OH
- 0.5V
t
HZ
R
A
V
CC
V
OL
1.5V
V
OL
+ 0.5V
t
LZ
RXEN
OUTPUT HIGH
OUTPUT LOW
t
ZL
t
ZH
t
ZL(SHDN)
t
ZH(SHDN)
ENABLED
D
DEN
D
Y,Z
V
CC
SIGNAL
GENERATOR
R
L
Y, Z
C
L
OUT (Y,Z)
3V
0V
t
DPHL
1.5V
1.5V
V
O+
V
O-
0V
0V
t
DPLH
D
Y,Z
SKEW = |t
DPHL
- t
DPLH
|
R
RXEN
A, B
V
CC
SIGNAL
GENERATOR
R
A,
R
B
C
L
= 15pF
R
A,
R
B
3V
0V
t
RPHL
1.7V
1.3V
V
OH
V
OL
0.8V
2.4V
t
RPLH
A, B
SKEW = |t
RPHL
- t
RPLH
|
ISL81387, ISL41387
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