ST3485E STMicroelectronics, ST3485E Datasheet - Page 6

• Manufacturer Part Number: ST3485E
• Description: TRASMIT AT UP TO 12MBPS TRUE RS-485/RS-422 TRANSCEIVER
• Manufacturer: STMicroelectronics

Electrical characteristics
4
Table 6.
Table 7.
Table 8.
6/22
Symbol
I
Symbol
Symbol
SUPPLY
I
SHDN
I
V
V
V
I
I
OSD
V
V
V
IN1
IN2
OD
OC
IH
IL
OD
OC
V
Shutdown supply current
Input logic threshold low
Input logic threshold high
Logic input current
Input current (A, B)
Differential drive output
Change in magnitude of driver
differential output voltage for
complementary output states
(Note:
Driver common mode output
voltage
Change in magnitude of driver
common mode output voltage
(Note:
Driver short circuit output
current
CC
Electrical characteristics
Electrical characteristics
V
to T
Logic input electrical characteristics
V
to T
Transmitter electrical characteristics
V
to T
CC
CC
CC
Power supply current No Load, DI=0V or V
A
A
a
= 3V to 3.6V, T
= 3V to 3.6V, T
= 3V to 3.6V, T
1)
1)
Parameter
= 25°C)
Parameter
= 25°C)
= 25°C)
Parameter
A
A
A
= -40 to 85°C, unless otherwise specified. Typical values are referred
= -40 to 85°C, unless otherwise specified. Typical values are referred
= -40 to 85°C, unless otherwise specified. Typical values are referred
DE=0V, RE=V
DE, DI, RE
DE, DI, RE
DE, DI, RE
DE=0V, V
R
R
R
R
R
R
L
L
L
L
L
L
= 100 (RS-422)
= 54 (RS-485)
= 60 (RS-485)
= 54 or 100
= 54 or 100
= 54 or 100
CC
Test Conditions
Test conditions
= 0 or 3.6V
Test conditions
CC
, DI=0V or V
CC
(Figure
(Figure
(Figure
(Figure
(Figure
DE=V
RE=0V or V
DE=0V,
RE=0V
(Figure
V
V
IN
IN
=12V
=-7V
CC
1.)
1.)
1.)
CC
1.)
2.)
1.)
,
CC
Min.
Min.
Min.
1.5
1.5
2
2
0.002
Typ.
Typ.
Typ.
1.3
1.2
1.3
Max.
Max.
Max.
-0.8
2.2
1.9
0.8
0.2
0.2
250
1
2.0
1
3
ST3485E
Unit
Unit
Unit
mA
mA
mA
mA
mA
V
V
V
V
V
V
V
V
A
A