ST490A STMicroelectronics, ST490A Datasheet - Page 3

• Manufacturer Part Number: ST490A
• Description: LOW POWER HIGH SPEED RS-485/RS-422 TRANSCEIVER
• Manufacturer: STMicroelectronics

ELECTRICAL CHARACTERISTICS
V
TRANSMITTER ELECTRICAL CHARACTERISTICS
V
Symbol
Symbol
I
CC
CC
SUPPLY
C
V
V
V
I
C
V
I
C
OSD
V
OFF
V
V
V
OUT
OD1
OD2
OD3
OC
YZ
IH
IN
OD
OC
IL
= 4.5V to 5.5V, T
= 4.5V to 5.5V, T
No Load Supply Current
Input Capacitance
Driver Output Capacitance
Output Capacitance
Differential Drive Output
(No load)
Differential Drive Output
(With Load)
Differential Drive Output
(With Load)
Change in magnitude of
Driver Differential Output
Voltage for Complementary
Output States (Note1)
Driver Common Mode
Output Voltage
Change in magnitude of
Driver Common Mode
Output Voltage (Note1)
Power Off Output Current
Driver Short Circuit Output
Current
Input Logic Threshold Low
Input Logic Threshold High
Parameter
Parameter
A
A
= -40 to 85°C, unless otherwise specified. Typical values are referred to T
= -40 to 85°C, unless otherwise specified. Typical values are referred to T
R
R
R
R
R
V
V
CC
O
L
L
L
L
L
= 54
= 100
= 54
= 54
= 54
=-7V to 12V
= 0V
(RS-422) (Figure 1)
or 100
(Figure 1)
(Figure 1)
(RS-422) (Figure 1)
Test Conditions
Test Conditions
V
O
=-7V to 12V
(Figure 1)
Min.
Min.
1.5
2
1
2
35
Typ.
Typ.
1.8
1.2
2.3
2.6
2
0
3
0
Max.
Max.
V
0.2
0.2
0.8
100
250
5
CC
5
3
A
a
= 25°C)
ST490A
= 25°C)
Unit
Unit
mA
mA
pF
pF
pF
V
V
V
V
V
V
V
V
A
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