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參數(shù)資料
| 型號： | ST3485ECDR |
| 廠商： | 意法半導體 |
| 英文描述： | 3.3V POWERED, 15KV ESD PROTECTED, TRASMIT AT UP TO 12MBPS TRUE RS-485/RS-422 TRANSCEIVER |
| 中文描述： | 3.3V供電，15KV靜電保護，TRASMIT高達12Mbps的真RS-485/RS-422收發(fā)器 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 361K |
| 代理商： | ST3485ECDR |
ST3485E
2/16
PIN CONFIGURATION
PIN DESCRIPTION
TRUTH TABLE (DRIVER)
X= Don’t Care; Z=High Impedance
TRUTH TABLE (RECEIVER)
X= Don’t Care; Z=High Impedance
PlN N°
SYMBOL
NAME AND FUNCTION
1
RO
Receiver Output. If A>B by 200mV, RO will be high; if A<B by 200mV, RO will be
low
Receiver Output Enable. RO is enabled when RE is low; RO is high impedance
when RE is high. If RE is high and DE is low, the device will enter a low power
shutdown mode.
Driver Output Enable. The driver outputs are enabled by bringing DE high. They
are high impedance when DE is low. If RE is high DE is low, the device will enter a
low-power shutdown mode. If the driver outputs are enabled, the part functions as
line driver, while they are high impedance, it functions as line receivers if RE is
low.
Driver Input. A low on DI forces output A low and output B high. Similarly, a high
on DI forces output A high and output B low
Ground
Non-inverting Receiver Input and Non-inverting Driver Output
Inverting Receiver Input and Inverting Driver Output
Supply Voltage: V
CC
= 3V to 3.6V
2
RE
3
DE
4
DI
5
6
7
8
GND
A
B
V
CC
INPUTS
OUTPUTS
MODE
RE
DE
DI
B
A
X
X
L
H
H
H
L
L
H
L
X
X
L
H
Z
Z
H
L
Z
Z
Normal
Normal
Normal
Shutdown
INPUTS
OUTPUT
MODE
RE DE
A-B
RO
L
L
L
L
H
L
L
L
L
L
≥
-0.015V
≤
-0.2V
Inputs Open
Inputs Shorted
X
H
L
H
H
Z
Normal
Normal
Normal
Normal
Shutdown
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