参数资料
型号: ISL81334IBZ-T
厂商: Intersil
文件页数: 22/28页
文件大小: 0K
描述: TXRX ESD RS-485/422 2PORT 28SOIC
产品培训模块: Solutions for Industrial Control Applications
标准包装: 1
类型: 收发器
驱动器/接收器数: 2/2
规程: RS232,RS422,RS485
电源电压: 4.5 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
供应商设备封装: 28-SOIC W
包装: 标准包装
其它名称: ISL81334IBZ-TDKR
3
FN6202.3
November 21, 2007
TABLE 2. ISL81334 FUNCTION TABLE
INPUTS
RECEIVER OUTPUTS
DRIVER OUTPUTS
CHARGE PUMPS
(NOTE 1)
MODE
SEL1 or 2
ON/OFF
DE 1 or 2
RA
RB
YZ
0
1
N.A.
ON
RS-232
X
0
X
High-Z
OFF
Shutdown
1
0
ON
High-Z*
High-Z
OFF
RS-485
1
ON
High-Z*
ON
OFF
RS-485
NOTE:
1. Charge pumps are off iff SEL1 = SEL2 = 1, or if ON/OFF = 0. If ON = 1, and either port is programmed for RS-232 mode, then the charge
pumps are on.
ISL81334 Truth Tables (FOR EACH PORT)
RS-232 TRANSMITTING MODE
INPUTS
OUTPUTS
SEL1 or 2 ON/OFF
DY
DZ
YZ
0
10011
0
10110
0
11001
0
11100
0
X
High-Z
RS-232 RECEIVING MODE
INPUTS
OUTPUT
SEL1 or 2 ON/OFF
AB
RA
RB
0
10011
0
10110
0
11001
0
11100
0
1
Open
1
0
X
High-Z
RS-485 TRANSMITTING MODE
INPUTS
OUTPUTS
SEL1 or 2 ON/OFF
DE1 or 2
DY
YZ
1
11010
1
11101
1
0
X
High-Z
1
0
X
High-Z
RS-485 RECEIVING MODE
INPUTS
OUTPUT
SEL1 or 2 ON/OFF
B-A
RA
RB*
11
≥ -40mV
1
High-Z
11
≤ -200mV
0
High-Z
1
Open or Shorted together
1
High-Z
1
0
X
High-Z
*Internally pulled high through a 40k
Ω resistor.
ISL81334, ISL41334
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