參數(shù)資料
型號: ISL81334IBZ-T
廠商: Intersil
文件頁數(shù): 22/28頁
文件大小: 0K
描述: TXRX ESD RS-485/422 2PORT 28SOIC
產(chǎn)品培訓(xùn)模塊: Solutions for Industrial Control Applications
標(biāo)準(zhǔn)包裝: 1
類型: 收發(fā)器
驅(qū)動器/接收器數(shù): 2/2
規(guī)程: RS232,RS422,RS485
電源電壓: 4.5 V ~ 5.5 V
安裝類型: 表面貼裝
封裝/外殼: 28-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 28-SOIC W
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: 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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