参数资料
型号: ISL8491EIB-T
厂商: Intersil
文件页数: 13/13页
文件大小: 0K
描述: IC TXRX RS485/422 5V ESD 14SOIC
标准包装: 2,500
类型: 收发器
驱动器/接收器数: 1/1
规程: RS422,RS485
电源电压: 4.5 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 14-SOIC(0.154",3.90mm 宽)
供应商设备封装: 14-SOICN
包装: 带卷 (TR)
9
FN6073.4
July 26, 2007
±15kV HBM. The RS-485 pins are particularly vulnerable to
ESD damage because they typically connect to an exposed
port on the exterior of the finished product. Simply touching
the port pins, or connecting a cable, can cause an ESD
event that might destroy unprotected ICs. These new ESD
structures protect the device whether or not it is powered up,
protect without allowing any latch-up mechanism to activate,
and without degrading the RS-485 common mode range of
-7V to +12V. This built-in ESD protection eliminates the need
for board level protection structures (e.g., transient
suppression diodes), and the associated, undesirable
capacitive load they present.
Typical Performance Curves VCC = 5V, TA = +25°C; Unless Otherwise Specified.
FIGURE 6. DRIVER OUTPUT CURRENT vs DIFFERENTIAL
OUTPUT VOLTAGE
FIGURE 7. DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs
TEMPERATURE
FIGURE 8. DRIVER OUTPUT CURRENT vs SHORT CIRCUIT
VOLTAGE
FIGURE 9. SUPPLY CURRENT vs TEMPERATURE
DIFFERENTIAL OUTPUT VOLTAGE (V)
DRIVE
R
OUT
P
UT
CURRENT
(
m
A)
01
2345
0
10
20
30
40
50
60
70
80
90
-40
0
50
85
2.0
2.2
2.4
2.6
2.8
3.0
3.2
3.4
3.6
TEMPERATURE (°C)
DIF
F
E
R
E
N
TIAL
OUTPUT
V
O
L
T
AGE
(V
)
-25
25
75
RDIFF = 54Ω
RDIFF = 100Ω
OUTPUT VOLTAGE (V)
-7 -6
-4
-2
0
2
4
6
8
10
12
OUT
P
UT
CURRENT
(m
A)
-60
-40
-20
0
20
40
60
80
100
120
140
160
-80
-100
-120
Y OR Z = HIGH
Y OR Z = LOW
ISL8490E/ISL8491E
ISL8488E/ISL8489E
-40
0
50
85
TEMPERATURE (°C)
I CC
(A)
-25
25
75
50
100
150
200
250
300
350
400
ISL8490E/ISL8491E
, DE = X, RE = X
ISL8489E
, DE = X, RE = X
ISL8488E
ISL8488E, ISL8489E, ISL8490E, ISL8491E
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