ST485E ST Microelectronics, ST485E Datasheet - Page 2

• Manufacturer Part Number: ST485E
• Description: LOW POWER RS-485/RS-422 TRANSCEIVER
• Manufacturer: ST Microelectronics

ST485E
PIN CONFIGURATION
PIN DESCRIPTION
TRUTH TABLE (DRIVER)
X= Don’t Care; Z=High Impedance
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
2/13
Symbol
RE
V
V
V
V
V
X
X
X
V
DO
RO
CC
DI
RI
I
PlN N°
INPUTS
1
2
3
4
5
6
7
8
Supply Voltage
Control Input Voltage (RE, DE)
Driver Input Voltage (DI)
Driver Output Voltage (A, B)
Receiver Input Voltage (A, B)
Receiver Output Voltage (RO)
DE
H
H
L
DI
H
X
L
SYMBOL
GND
B
H
L
Z
V
RO
RE
DE
OUTPUTS
DI
A
B
CC
Parameter
A
H
Z
L
Receiver Output
Receiver Output Enable
Driver Output Enable
Driver Input
Ground
Non-inverting Receiver Input and Non-inverting Driver Output
Inverting Receiver Input and Inverting Driver Output
Supply Voltage
TRUTH TABLE (RECEIVER)
X= Don’t Care; Z=High Impedance
RE
H
L
L
L
NAME AND FUNCTION
INPUTS
DE
L
L
L
L
-0.5 to (V
-0.5 to (V
-0.5 to (V
INPUTS OPEN
Value
7
14
14
+0.2V
A-B
-0.2V
CC
CC
CC
X
+ 0.5)
+ 0.5)
+ 0.5)
OUTPUT
RO
H
H
L
Z
Unit
V
V
V
V
V
V