ST485ER STMicroelectronics, ST485ER Datasheet - Page 6

• Manufacturer Part Number: ST485ER
• Description: Low power RS-485/RS-422 transceiver
• Manufacturer: STMicroelectronics

Electrical characteristics
4
4.1
6/19
Electrical characteristics
Table 5.
DC Electrical characteristics
V
to T
Table 6.
Symbol
Symbol
CC
∆V
∆V
V
V
∆V
I
V
V
V
ESD
ESD
V
I
I
R
V
OZR
V
OD1
OD2
IN1
IN2
A
OC
OH
TH
OL
IH
OD
OC
IL
IN
TH
= 5V ± 5%, T
= 25°C)
Differential driver output (no
load)
Differential driver output
(with load)
Change in magnitude of
driver differential output
voltage for complementary
output states
Driver common-mode
output voltage
Change in magnitude of
driver common-mode output
voltage for complementary
output states
Input high voltage
Input low voltage
Input current
Input current (A, B)
Receiver differential
threshold voltage
Receiver input hysteresis
Receiver output high
voltage
Receiver output low voltage I
3-State (high impedance)
output current at receiver
Receiver input resistance
ESD Protection voltage
ESD Protection voltage
ESD Performance: transmitter outputs, receiver inputs
DC Electrical characteristics
Parameter
A
= T
Parameter
MIN
to T
MAX
, unless otherwise specified. Typical values are referred
R
R
R
R
R
RE, DE, DI
RE, DE, DI
RE, DE, DI
V
V
V
V
V
I
V
V
O
O
CM
IN
IN
CM
CM
O
CM
L
L
L
L
L
= -4mAV
= 4mAV
= 27Ω (RS-485) (
= 50Ω (RS-422) (
= 27Ω or 50Ω (
= 27Ω or 50Ω (
= 27Ω or 50Ω (
= 0.4 to 2.4V
= 12V
= -7V
= 0V or 5.25VV
= -7 to 12V
= 0V
= -7 to 12V
Test conditions
Human body model
IEC-1000-4-2
Test conditions
ID
ID
= -200mV
= 200mV
Figure 2.
Figure 2.
Figure 2.
DE
Figure 2.
Figure 2.
(1)
= 0V
)
)
)
)
)
Min.
±15
Min.
-0.2
±8
1.5
2.0
3.5
24
Typ.
Typ.
70
Max.
Max.
-0.8
0.2
0.2
0.8
± 2
0.2
0.4
± 1
5
5
5
3
1
ST485ER
Unit
Unit
KV
KV
mA
mA
mV
KΩ
µA
µA
V
V
V
V
V
V
V
V
V
V
V