参数资料
型号: ISL8490
厂商: Intersil Corporation
英文描述: 5V, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers
中文描述: 5V,低功耗,高速或摆率限制,RS-485/RS-422收发器
文件页数: 8/16页
文件大小: 507K
代理商: ISL8490
8
FIGURE 2A. TEST CIRCUIT
FIGURE 2B. MEASUREMENT POINTS
FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES
FIGURE 3A. TEST CIRCUIT
FIGURE 3B. MEASUREMENT POINTS
FIGURE 3. DRIVER ENABLE AND DISABLE TIMES (EXCLUDING ISL8488, ISL8490)
FIGURE 4A. TEST CIRCUIT
FIGURE 4B. MEASUREMENT POINTS
FIGURE 4. RECEIVER PROPAGATION DELAY
Test Circuits and Waveforms
(Continued)
D
DE
DI
V
CC
SIGNAL
GENERATOR
C
L
= 100pF
R
DIFF
Z
Y
C
L
= 100pF
OUT (Y)
3V
0V
t
PLH
1.5V
1.5V
V
OH
V
OL
50%
50%
t
PHL
OUT (Z)
t
PHL
V
OH
V
OL
50%
50%
t
PLH
DIFF OUT (Y - Z)
t
R
+V
OD
-V
OD
90%
90%
t
F
10%
10%
DI
SKEW = |t
PLH
(Y or Z) - t
PHL
(Z or Y)|
D
DE
DI
C
L
500
Z
Y
V
CC
GND
SW
(SHDN) for ISL8483 only
PARAMETER OUTPUT
t
HZ
t
LZ
t
ZH
t
ZL
t
ZH(SHDN)
t
ZL(SHDN)
RE
X
X
DI
1/0
0/1
1/0
0/1
1/0
0/1
SW
GND
V
CC
GND
V
CC
GND
V
CC
C
L
(pF)
15
15
100
100
100
100
Y/Z
Y/Z
Y/Z
Y/Z
Y/Z
Y/Z
0 (Note 5)
0 (Note 5)
1 (Note 8)
1 (Note 8)
SIGNAL
GENERATOR
OUT (Y, Z)
3V
0V
1.5V
1.5V
V
OH
0V
2.3V
V
OH
- 0.5V
t
HZ
OUT (Y, Z)
V
CC
V
OL
2.3V
V
OL
+ 0.5V
t
LZ
DE
OUTPUT HIGH
OUTPUT LOW
t
ZL
, t
ZL(SHDN)
NOTE 7
t
ZH
, t
ZH(SHDN)
NOTE 7
NOTE 7
SIGNAL
GENERATOR
R
RO
RE
A
B
+1.5V
15pF
RO
3V
0V
t
PLH
1.5V
1.5V
V
CC
0V
50%
50%
t
PHL
A
ISL8483, ISL8485, ISL8488, ISL8489, ISL8490, ISL8491
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